From: marshmellow42 Date: Wed, 7 Jan 2015 04:29:45 +0000 (-0500) Subject: code cleanup. re-added psk commands. X-Git-Tag: v2.0.0-rc1~57^2~3^2~1 X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/commitdiff_plain/a6293168da03b547d7cb283f94d8e7aa7109069a?ds=sidebyside code cleanup. re-added psk commands. also fixed a bug in detect clock functions. sync with master prep for pull request --- diff --git a/armsrc/lfops.c b/armsrc/lfops.c index ab196325..b9dbb8e2 100644 --- a/armsrc/lfops.c +++ b/armsrc/lfops.c @@ -18,144 +18,144 @@ /** -* Does the sample acquisition. If threshold is specified, the actual sampling -* is not commenced until the threshold has been reached. +* Does the sample acquisition. If threshold is specified, the actual sampling +* is not commenced until the threshold has been reached. * @param trigger_threshold - the threshold * @param silent - is true, now outputs are made. If false, dbprints the status */ void DoAcquisition125k_internal(int trigger_threshold,bool silent) { - uint8_t *dest = (uint8_t *)BigBuf; - int n = sizeof(BigBuf); - int i; - - memset(dest, 0, n); - i = 0; - for(;;) { - if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_TXRDY) { - AT91C_BASE_SSC->SSC_THR = 0x43; - LED_D_ON(); - } - if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_RXRDY) { - dest[i] = (uint8_t)AT91C_BASE_SSC->SSC_RHR; - LED_D_OFF(); - if (trigger_threshold != -1 && dest[i] < trigger_threshold) - continue; - else - trigger_threshold = -1; - if (++i >= n) break; - } - } - if(!silent) - { - Dbprintf("buffer samples: %02x %02x %02x %02x %02x %02x %02x %02x ...", - dest[0], dest[1], dest[2], dest[3], dest[4], dest[5], dest[6], dest[7]); - - } + uint8_t *dest = (uint8_t *)BigBuf; + int n = sizeof(BigBuf); + int i; + + memset(dest, 0, n); + i = 0; + for(;;) { + if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_TXRDY) { + AT91C_BASE_SSC->SSC_THR = 0x43; + LED_D_ON(); + } + if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_RXRDY) { + dest[i] = (uint8_t)AT91C_BASE_SSC->SSC_RHR; + LED_D_OFF(); + if (trigger_threshold != -1 && dest[i] < trigger_threshold) + continue; + else + trigger_threshold = -1; + if (++i >= n) break; + } + } + if(!silent) + { + Dbprintf("buffer samples: %02x %02x %02x %02x %02x %02x %02x %02x ...", + dest[0], dest[1], dest[2], dest[3], dest[4], dest[5], dest[6], dest[7]); + + } } /** -* Perform sample aquisition. +* Perform sample aquisition. */ void DoAcquisition125k(int trigger_threshold) { - DoAcquisition125k_internal(trigger_threshold, false); + DoAcquisition125k_internal(trigger_threshold, false); } /** -* Setup the FPGA to listen for samples. This method downloads the FPGA bitstream -* if not already loaded, sets divisor and starts up the antenna. +* Setup the FPGA to listen for samples. This method downloads the FPGA bitstream +* if not already loaded, sets divisor and starts up the antenna. * @param divisor : 1, 88> 255 or negative ==> 134.8 KHz * 0 or 95 ==> 125 KHz -* +* **/ void LFSetupFPGAForADC(int divisor, bool lf_field) { - FpgaDownloadAndGo(FPGA_BITSTREAM_LF); - if ( (divisor == 1) || (divisor < 0) || (divisor > 255) ) - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 88); //134.8Khz - else if (divisor == 0) - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz - else - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, divisor); - - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | (lf_field ? FPGA_LF_ADC_READER_FIELD : 0)); - - // Connect the A/D to the peak-detected low-frequency path. - SetAdcMuxFor(GPIO_MUXSEL_LOPKD); - // Give it a bit of time for the resonant antenna to settle. - SpinDelay(50); - // Now set up the SSC to get the ADC samples that are now streaming at us. - FpgaSetupSsc(); + FpgaDownloadAndGo(FPGA_BITSTREAM_LF); + if ( (divisor == 1) || (divisor < 0) || (divisor > 255) ) + FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 88); //134.8Khz + else if (divisor == 0) + FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz + else + FpgaSendCommand(FPGA_CMD_SET_DIVISOR, divisor); + + FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | (lf_field ? FPGA_LF_ADC_READER_FIELD : 0)); + + // Connect the A/D to the peak-detected low-frequency path. + SetAdcMuxFor(GPIO_MUXSEL_LOPKD); + // Give it a bit of time for the resonant antenna to settle. + SpinDelay(50); + // Now set up the SSC to get the ADC samples that are now streaming at us. + FpgaSetupSsc(); } /** -* Initializes the FPGA, and acquires the samples. +* Initializes the FPGA, and acquires the samples. **/ void AcquireRawAdcSamples125k(int divisor) { - LFSetupFPGAForADC(divisor, true); - // Now call the acquisition routine - DoAcquisition125k_internal(-1,false); + LFSetupFPGAForADC(divisor, true); + // Now call the acquisition routine + DoAcquisition125k_internal(-1,false); } /** -* Initializes the FPGA for snoop-mode, and acquires the samples. +* Initializes the FPGA for snoop-mode, and acquires the samples. **/ void SnoopLFRawAdcSamples(int divisor, int trigger_threshold) { - LFSetupFPGAForADC(divisor, false); - DoAcquisition125k(trigger_threshold); + LFSetupFPGAForADC(divisor, false); + DoAcquisition125k(trigger_threshold); } void ModThenAcquireRawAdcSamples125k(int delay_off, int period_0, int period_1, uint8_t *command) { - /* Make sure the tag is reset */ - FpgaDownloadAndGo(FPGA_BITSTREAM_LF); - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - SpinDelay(2500); + /* Make sure the tag is reset */ + FpgaDownloadAndGo(FPGA_BITSTREAM_LF); + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); + SpinDelay(2500); - int divisor_used = 95; // 125 KHz - // see if 'h' was specified + int divisor_used = 95; // 125 KHz + // see if 'h' was specified - if (command[strlen((char *) command) - 1] == 'h') - divisor_used = 88; // 134.8 KHz + if (command[strlen((char *) command) - 1] == 'h') + divisor_used = 88; // 134.8 KHz - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, divisor_used); - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); - // Give it a bit of time for the resonant antenna to settle. - SpinDelay(50); + FpgaSendCommand(FPGA_CMD_SET_DIVISOR, divisor_used); + FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); + // Give it a bit of time for the resonant antenna to settle. + SpinDelay(50); - // And a little more time for the tag to fully power up - SpinDelay(2000); + // And a little more time for the tag to fully power up + SpinDelay(2000); - // Now set up the SSC to get the ADC samples that are now streaming at us. - FpgaSetupSsc(); + // Now set up the SSC to get the ADC samples that are now streaming at us. + FpgaSetupSsc(); - // now modulate the reader field - while(*command != '\0' && *command != ' ') { - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - LED_D_OFF(); - SpinDelayUs(delay_off); - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, divisor_used); + // now modulate the reader field + while(*command != '\0' && *command != ' ') { + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); + LED_D_OFF(); + SpinDelayUs(delay_off); + FpgaSendCommand(FPGA_CMD_SET_DIVISOR, divisor_used); - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); - LED_D_ON(); - if(*(command++) == '0') - SpinDelayUs(period_0); - else - SpinDelayUs(period_1); - } - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - LED_D_OFF(); - SpinDelayUs(delay_off); - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, divisor_used); + FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); + LED_D_ON(); + if(*(command++) == '0') + SpinDelayUs(period_0); + else + SpinDelayUs(period_1); + } + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); + LED_D_OFF(); + SpinDelayUs(delay_off); + FpgaSendCommand(FPGA_CMD_SET_DIVISOR, divisor_used); - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); + FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); - // now do the read - DoAcquisition125k(-1); + // now do the read + DoAcquisition125k(-1); } /* blank r/w tag data stream @@ -169,230 +169,227 @@ void ModThenAcquireRawAdcSamples125k(int delay_off, int period_0, int period_1, */ void ReadTItag(void) { - // some hardcoded initial params - // when we read a TI tag we sample the zerocross line at 2Mhz - // TI tags modulate a 1 as 16 cycles of 123.2Khz - // TI tags modulate a 0 as 16 cycles of 134.2Khz -#define FSAMPLE 2000000 -#define FREQLO 123200 -#define FREQHI 134200 - - signed char *dest = (signed char *)BigBuf; - int n = sizeof(BigBuf); - // int *dest = GraphBuffer; - // int n = GraphTraceLen; - - // 128 bit shift register [shift3:shift2:shift1:shift0] - uint32_t shift3 = 0, shift2 = 0, shift1 = 0, shift0 = 0; - - int i, cycles=0, samples=0; - // how many sample points fit in 16 cycles of each frequency - uint32_t sampleslo = (FSAMPLE<<4)/FREQLO, sampleshi = (FSAMPLE<<4)/FREQHI; - // when to tell if we're close enough to one freq or another - uint32_t threshold = (sampleslo - sampleshi + 1)>>1; - - // TI tags charge at 134.2Khz - FpgaDownloadAndGo(FPGA_BITSTREAM_LF); - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 88); //134.8Khz - - // Place FPGA in passthrough mode, in this mode the CROSS_LO line - // connects to SSP_DIN and the SSP_DOUT logic level controls - // whether we're modulating the antenna (high) - // or listening to the antenna (low) - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_PASSTHRU); - - // get TI tag data into the buffer - AcquireTiType(); - - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - - for (i=0; i0) ) { - cycles++; - // after 16 cycles, measure the frequency - if (cycles>15) { - cycles=0; - samples=i-samples; // number of samples in these 16 cycles - - // TI bits are coming to us lsb first so shift them - // right through our 128 bit right shift register - shift0 = (shift0>>1) | (shift1 << 31); - shift1 = (shift1>>1) | (shift2 << 31); - shift2 = (shift2>>1) | (shift3 << 31); - shift3 >>= 1; - - // check if the cycles fall close to the number - // expected for either the low or high frequency - if ( (samples>(sampleslo-threshold)) && (samples<(sampleslo+threshold)) ) { - // low frequency represents a 1 - shift3 |= (1<<31); - } else if ( (samples>(sampleshi-threshold)) && (samples<(sampleshi+threshold)) ) { - // high frequency represents a 0 - } else { - // probably detected a gay waveform or noise - // use this as gaydar or discard shift register and start again - shift3 = shift2 = shift1 = shift0 = 0; - } - samples = i; - - // for each bit we receive, test if we've detected a valid tag - - // if we see 17 zeroes followed by 6 ones, we might have a tag - // remember the bits are backwards - if ( ((shift0 & 0x7fffff) == 0x7e0000) ) { - // if start and end bytes match, we have a tag so break out of the loop - if ( ((shift0>>16)&0xff) == ((shift3>>8)&0xff) ) { - cycles = 0xF0B; //use this as a flag (ugly but whatever) - break; - } - } - } - } - } - - // if flag is set we have a tag - if (cycles!=0xF0B) { - DbpString("Info: No valid tag detected."); - } else { - // put 64 bit data into shift1 and shift0 - shift0 = (shift0>>24) | (shift1 << 8); - shift1 = (shift1>>24) | (shift2 << 8); - - // align 16 bit crc into lower half of shift2 - shift2 = ((shift2>>24) | (shift3 << 8)) & 0x0ffff; - - // if r/w tag, check ident match - if ( shift3&(1<<15) ) { - DbpString("Info: TI tag is rewriteable"); - // only 15 bits compare, last bit of ident is not valid - if ( ((shift3>>16)^shift0)&0x7fff ) { - DbpString("Error: Ident mismatch!"); - } else { - DbpString("Info: TI tag ident is valid"); - } - } else { - DbpString("Info: TI tag is readonly"); - } - - // WARNING the order of the bytes in which we calc crc below needs checking - // i'm 99% sure the crc algorithm is correct, but it may need to eat the - // bytes in reverse or something - // calculate CRC - uint32_t crc=0; - - crc = update_crc16(crc, (shift0)&0xff); - crc = update_crc16(crc, (shift0>>8)&0xff); - crc = update_crc16(crc, (shift0>>16)&0xff); - crc = update_crc16(crc, (shift0>>24)&0xff); - crc = update_crc16(crc, (shift1)&0xff); - crc = update_crc16(crc, (shift1>>8)&0xff); - crc = update_crc16(crc, (shift1>>16)&0xff); - crc = update_crc16(crc, (shift1>>24)&0xff); - - Dbprintf("Info: Tag data: %x%08x, crc=%x", - (unsigned int)shift1, (unsigned int)shift0, (unsigned int)shift2 & 0xFFFF); - if (crc != (shift2&0xffff)) { - Dbprintf("Error: CRC mismatch, expected %x", (unsigned int)crc); - } else { - DbpString("Info: CRC is good"); - } - } + // some hardcoded initial params + // when we read a TI tag we sample the zerocross line at 2Mhz + // TI tags modulate a 1 as 16 cycles of 123.2Khz + // TI tags modulate a 0 as 16 cycles of 134.2Khz + #define FSAMPLE 2000000 + #define FREQLO 123200 + #define FREQHI 134200 + + signed char *dest = (signed char *)BigBuf; + int n = sizeof(BigBuf); + // 128 bit shift register [shift3:shift2:shift1:shift0] + uint32_t shift3 = 0, shift2 = 0, shift1 = 0, shift0 = 0; + + int i, cycles=0, samples=0; + // how many sample points fit in 16 cycles of each frequency + uint32_t sampleslo = (FSAMPLE<<4)/FREQLO, sampleshi = (FSAMPLE<<4)/FREQHI; + // when to tell if we're close enough to one freq or another + uint32_t threshold = (sampleslo - sampleshi + 1)>>1; + + // TI tags charge at 134.2Khz + FpgaDownloadAndGo(FPGA_BITSTREAM_LF); + FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 88); //134.8Khz + + // Place FPGA in passthrough mode, in this mode the CROSS_LO line + // connects to SSP_DIN and the SSP_DOUT logic level controls + // whether we're modulating the antenna (high) + // or listening to the antenna (low) + FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_PASSTHRU); + + // get TI tag data into the buffer + AcquireTiType(); + + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); + + for (i=0; i0) ) { + cycles++; + // after 16 cycles, measure the frequency + if (cycles>15) { + cycles=0; + samples=i-samples; // number of samples in these 16 cycles + + // TI bits are coming to us lsb first so shift them + // right through our 128 bit right shift register + shift0 = (shift0>>1) | (shift1 << 31); + shift1 = (shift1>>1) | (shift2 << 31); + shift2 = (shift2>>1) | (shift3 << 31); + shift3 >>= 1; + + // check if the cycles fall close to the number + // expected for either the low or high frequency + if ( (samples>(sampleslo-threshold)) && (samples<(sampleslo+threshold)) ) { + // low frequency represents a 1 + shift3 |= (1<<31); + } else if ( (samples>(sampleshi-threshold)) && (samples<(sampleshi+threshold)) ) { + // high frequency represents a 0 + } else { + // probably detected a gay waveform or noise + // use this as gaydar or discard shift register and start again + shift3 = shift2 = shift1 = shift0 = 0; + } + samples = i; + + // for each bit we receive, test if we've detected a valid tag + + // if we see 17 zeroes followed by 6 ones, we might have a tag + // remember the bits are backwards + if ( ((shift0 & 0x7fffff) == 0x7e0000) ) { + // if start and end bytes match, we have a tag so break out of the loop + if ( ((shift0>>16)&0xff) == ((shift3>>8)&0xff) ) { + cycles = 0xF0B; //use this as a flag (ugly but whatever) + break; + } + } + } + } + } + + // if flag is set we have a tag + if (cycles!=0xF0B) { + DbpString("Info: No valid tag detected."); + } else { + // put 64 bit data into shift1 and shift0 + shift0 = (shift0>>24) | (shift1 << 8); + shift1 = (shift1>>24) | (shift2 << 8); + + // align 16 bit crc into lower half of shift2 + shift2 = ((shift2>>24) | (shift3 << 8)) & 0x0ffff; + + // if r/w tag, check ident match + if (shift3 & (1<<15) ) { + DbpString("Info: TI tag is rewriteable"); + // only 15 bits compare, last bit of ident is not valid + if (((shift3 >> 16) ^ shift0) & 0x7fff ) { + DbpString("Error: Ident mismatch!"); + } else { + DbpString("Info: TI tag ident is valid"); + } + } else { + DbpString("Info: TI tag is readonly"); + } + + // WARNING the order of the bytes in which we calc crc below needs checking + // i'm 99% sure the crc algorithm is correct, but it may need to eat the + // bytes in reverse or something + // calculate CRC + uint32_t crc=0; + + crc = update_crc16(crc, (shift0)&0xff); + crc = update_crc16(crc, (shift0>>8)&0xff); + crc = update_crc16(crc, (shift0>>16)&0xff); + crc = update_crc16(crc, (shift0>>24)&0xff); + crc = update_crc16(crc, (shift1)&0xff); + crc = update_crc16(crc, (shift1>>8)&0xff); + crc = update_crc16(crc, (shift1>>16)&0xff); + crc = update_crc16(crc, (shift1>>24)&0xff); + + Dbprintf("Info: Tag data: %x%08x, crc=%x", + (unsigned int)shift1, (unsigned int)shift0, (unsigned int)shift2 & 0xFFFF); + if (crc != (shift2&0xffff)) { + Dbprintf("Error: CRC mismatch, expected %x", (unsigned int)crc); + } else { + DbpString("Info: CRC is good"); + } + } } void WriteTIbyte(uint8_t b) { - int i = 0; - - // modulate 8 bits out to the antenna - for (i=0; i<8; i++) - { - if (b&(1<PIO_PDR = GPIO_SSC_DIN; - AT91C_BASE_PIOA->PIO_ASR = GPIO_SSC_DIN; - - // steal this pin from the SSP and use it to control the modulation - AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DOUT; - AT91C_BASE_PIOA->PIO_OER = GPIO_SSC_DOUT; - - AT91C_BASE_SSC->SSC_CR = AT91C_SSC_SWRST; - AT91C_BASE_SSC->SSC_CR = AT91C_SSC_RXEN | AT91C_SSC_TXEN; - - // Sample at 2 Mbit/s, so TI tags are 16.2 vs. 14.9 clocks long - // 48/2 = 24 MHz clock must be divided by 12 - AT91C_BASE_SSC->SSC_CMR = 12; - - AT91C_BASE_SSC->SSC_RCMR = SSC_CLOCK_MODE_SELECT(0); - AT91C_BASE_SSC->SSC_RFMR = SSC_FRAME_MODE_BITS_IN_WORD(32) | AT91C_SSC_MSBF; - AT91C_BASE_SSC->SSC_TCMR = 0; - AT91C_BASE_SSC->SSC_TFMR = 0; - - LED_D_ON(); - - // modulate antenna - HIGH(GPIO_SSC_DOUT); - - // Charge TI tag for 50ms. - SpinDelay(50); - - // stop modulating antenna and listen - LOW(GPIO_SSC_DOUT); - - LED_D_OFF(); - - i = 0; - for(;;) { - if(AT91C_BASE_SSC->SSC_SR & AT91C_SSC_RXRDY) { - BigBuf[i] = AT91C_BASE_SSC->SSC_RHR; // store 32 bit values in buffer - i++; if(i >= TIBUFLEN) break; - } - WDT_HIT(); - } - - // return stolen pin to SSP - AT91C_BASE_PIOA->PIO_PDR = GPIO_SSC_DOUT; - AT91C_BASE_PIOA->PIO_ASR = GPIO_SSC_DIN | GPIO_SSC_DOUT; - - char *dest = (char *)BigBuf; - n = TIBUFLEN*32; - // unpack buffer - for (i=TIBUFLEN-1; i>=0; i--) { - for (j=0; j<32; j++) { - if(BigBuf[i] & (1 << j)) { - dest[--n] = 1; - } else { - dest[--n] = -1; - } - } - } + int i, j, n; + // tag transmission is <20ms, sampling at 2M gives us 40K samples max + // each sample is 1 bit stuffed into a uint32_t so we need 1250 uint32_t + #define TIBUFLEN 1250 + + // clear buffer + memset(BigBuf,0,sizeof(BigBuf)); + + // Set up the synchronous serial port + AT91C_BASE_PIOA->PIO_PDR = GPIO_SSC_DIN; + AT91C_BASE_PIOA->PIO_ASR = GPIO_SSC_DIN; + + // steal this pin from the SSP and use it to control the modulation + AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DOUT; + AT91C_BASE_PIOA->PIO_OER = GPIO_SSC_DOUT; + + AT91C_BASE_SSC->SSC_CR = AT91C_SSC_SWRST; + AT91C_BASE_SSC->SSC_CR = AT91C_SSC_RXEN | AT91C_SSC_TXEN; + + // Sample at 2 Mbit/s, so TI tags are 16.2 vs. 14.9 clocks long + // 48/2 = 24 MHz clock must be divided by 12 + AT91C_BASE_SSC->SSC_CMR = 12; + + AT91C_BASE_SSC->SSC_RCMR = SSC_CLOCK_MODE_SELECT(0); + AT91C_BASE_SSC->SSC_RFMR = SSC_FRAME_MODE_BITS_IN_WORD(32) | AT91C_SSC_MSBF; + AT91C_BASE_SSC->SSC_TCMR = 0; + AT91C_BASE_SSC->SSC_TFMR = 0; + + LED_D_ON(); + + // modulate antenna + HIGH(GPIO_SSC_DOUT); + + // Charge TI tag for 50ms. + SpinDelay(50); + + // stop modulating antenna and listen + LOW(GPIO_SSC_DOUT); + + LED_D_OFF(); + + i = 0; + for(;;) { + if(AT91C_BASE_SSC->SSC_SR & AT91C_SSC_RXRDY) { + BigBuf[i] = AT91C_BASE_SSC->SSC_RHR; // store 32 bit values in buffer + i++; if(i >= TIBUFLEN) break; + } + WDT_HIT(); + } + + // return stolen pin to SSP + AT91C_BASE_PIOA->PIO_PDR = GPIO_SSC_DOUT; + AT91C_BASE_PIOA->PIO_ASR = GPIO_SSC_DIN | GPIO_SSC_DOUT; + + char *dest = (char *)BigBuf; + n = TIBUFLEN*32; + // unpack buffer + for (i=TIBUFLEN-1; i>=0; i--) { + for (j=0; j<32; j++) { + if(BigBuf[i] & (1 << j)) { + dest[--n] = 1; + } else { + dest[--n] = -1; + } + } + } } // arguments: 64bit data split into 32bit idhi:idlo and optional 16bit crc @@ -400,127 +397,127 @@ void AcquireTiType(void) // if not provided a valid crc will be computed from the data and written. void WriteTItag(uint32_t idhi, uint32_t idlo, uint16_t crc) { - FpgaDownloadAndGo(FPGA_BITSTREAM_LF); - if(crc == 0) { - crc = update_crc16(crc, (idlo)&0xff); - crc = update_crc16(crc, (idlo>>8)&0xff); - crc = update_crc16(crc, (idlo>>16)&0xff); - crc = update_crc16(crc, (idlo>>24)&0xff); - crc = update_crc16(crc, (idhi)&0xff); - crc = update_crc16(crc, (idhi>>8)&0xff); - crc = update_crc16(crc, (idhi>>16)&0xff); - crc = update_crc16(crc, (idhi>>24)&0xff); - } - Dbprintf("Writing to tag: %x%08x, crc=%x", - (unsigned int) idhi, (unsigned int) idlo, crc); - - // TI tags charge at 134.2Khz - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 88); //134.8Khz - // Place FPGA in passthrough mode, in this mode the CROSS_LO line - // connects to SSP_DIN and the SSP_DOUT logic level controls - // whether we're modulating the antenna (high) - // or listening to the antenna (low) - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_PASSTHRU); - LED_A_ON(); - - // steal this pin from the SSP and use it to control the modulation - AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DOUT; - AT91C_BASE_PIOA->PIO_OER = GPIO_SSC_DOUT; - - // writing algorithm: - // a high bit consists of a field off for 1ms and field on for 1ms - // a low bit consists of a field off for 0.3ms and field on for 1.7ms - // initiate a charge time of 50ms (field on) then immediately start writing bits - // start by writing 0xBB (keyword) and 0xEB (password) - // then write 80 bits of data (or 64 bit data + 16 bit crc if you prefer) - // finally end with 0x0300 (write frame) - // all data is sent lsb firts - // finish with 15ms programming time - - // modulate antenna - HIGH(GPIO_SSC_DOUT); - SpinDelay(50); // charge time - - WriteTIbyte(0xbb); // keyword - WriteTIbyte(0xeb); // password - WriteTIbyte( (idlo )&0xff ); - WriteTIbyte( (idlo>>8 )&0xff ); - WriteTIbyte( (idlo>>16)&0xff ); - WriteTIbyte( (idlo>>24)&0xff ); - WriteTIbyte( (idhi )&0xff ); - WriteTIbyte( (idhi>>8 )&0xff ); - WriteTIbyte( (idhi>>16)&0xff ); - WriteTIbyte( (idhi>>24)&0xff ); // data hi to lo - WriteTIbyte( (crc )&0xff ); // crc lo - WriteTIbyte( (crc>>8 )&0xff ); // crc hi - WriteTIbyte(0x00); // write frame lo - WriteTIbyte(0x03); // write frame hi - HIGH(GPIO_SSC_DOUT); - SpinDelay(50); // programming time - - LED_A_OFF(); - - // get TI tag data into the buffer - AcquireTiType(); - - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - DbpString("Now use tiread to check"); + FpgaDownloadAndGo(FPGA_BITSTREAM_LF); + if(crc == 0) { + crc = update_crc16(crc, (idlo)&0xff); + crc = update_crc16(crc, (idlo>>8)&0xff); + crc = update_crc16(crc, (idlo>>16)&0xff); + crc = update_crc16(crc, (idlo>>24)&0xff); + crc = update_crc16(crc, (idhi)&0xff); + crc = update_crc16(crc, (idhi>>8)&0xff); + crc = update_crc16(crc, (idhi>>16)&0xff); + crc = update_crc16(crc, (idhi>>24)&0xff); + } + Dbprintf("Writing to tag: %x%08x, crc=%x", + (unsigned int) idhi, (unsigned int) idlo, crc); + + // TI tags charge at 134.2Khz + FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 88); //134.8Khz + // Place FPGA in passthrough mode, in this mode the CROSS_LO line + // connects to SSP_DIN and the SSP_DOUT logic level controls + // whether we're modulating the antenna (high) + // or listening to the antenna (low) + FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_PASSTHRU); + LED_A_ON(); + + // steal this pin from the SSP and use it to control the modulation + AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DOUT; + AT91C_BASE_PIOA->PIO_OER = GPIO_SSC_DOUT; + + // writing algorithm: + // a high bit consists of a field off for 1ms and field on for 1ms + // a low bit consists of a field off for 0.3ms and field on for 1.7ms + // initiate a charge time of 50ms (field on) then immediately start writing bits + // start by writing 0xBB (keyword) and 0xEB (password) + // then write 80 bits of data (or 64 bit data + 16 bit crc if you prefer) + // finally end with 0x0300 (write frame) + // all data is sent lsb firts + // finish with 15ms programming time + + // modulate antenna + HIGH(GPIO_SSC_DOUT); + SpinDelay(50); // charge time + + WriteTIbyte(0xbb); // keyword + WriteTIbyte(0xeb); // password + WriteTIbyte( (idlo )&0xff ); + WriteTIbyte( (idlo>>8 )&0xff ); + WriteTIbyte( (idlo>>16)&0xff ); + WriteTIbyte( (idlo>>24)&0xff ); + WriteTIbyte( (idhi )&0xff ); + WriteTIbyte( (idhi>>8 )&0xff ); + WriteTIbyte( (idhi>>16)&0xff ); + WriteTIbyte( (idhi>>24)&0xff ); // data hi to lo + WriteTIbyte( (crc )&0xff ); // crc lo + WriteTIbyte( (crc>>8 )&0xff ); // crc hi + WriteTIbyte(0x00); // write frame lo + WriteTIbyte(0x03); // write frame hi + HIGH(GPIO_SSC_DOUT); + SpinDelay(50); // programming time + + LED_A_OFF(); + + // get TI tag data into the buffer + AcquireTiType(); + + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); + DbpString("Now use tiread to check"); } void SimulateTagLowFrequency(int period, int gap, int ledcontrol) { - int i; - uint8_t *tab = (uint8_t *)BigBuf; - - FpgaDownloadAndGo(FPGA_BITSTREAM_LF); - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_EDGE_DETECT); - - AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DOUT | GPIO_SSC_CLK; - - AT91C_BASE_PIOA->PIO_OER = GPIO_SSC_DOUT; - AT91C_BASE_PIOA->PIO_ODR = GPIO_SSC_CLK; - + int i; + uint8_t *tab = (uint8_t *)BigBuf; + + FpgaDownloadAndGo(FPGA_BITSTREAM_LF); + FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_EDGE_DETECT); + + AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DOUT | GPIO_SSC_CLK; + + AT91C_BASE_PIOA->PIO_OER = GPIO_SSC_DOUT; + AT91C_BASE_PIOA->PIO_ODR = GPIO_SSC_CLK; + #define SHORT_COIL() LOW(GPIO_SSC_DOUT) #define OPEN_COIL() HIGH(GPIO_SSC_DOUT) - - i = 0; - for(;;) { - while(!(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_CLK)) { - if(BUTTON_PRESS()) { - DbpString("Stopped"); - return; - } - WDT_HIT(); - } - - if (ledcontrol) - LED_D_ON(); - - if(tab[i]) - OPEN_COIL(); - else - SHORT_COIL(); - - if (ledcontrol) - LED_D_OFF(); - - while(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_CLK) { - if(BUTTON_PRESS()) { - DbpString("Stopped"); - return; - } - WDT_HIT(); - } - - i++; - if(i == period) { - i = 0; - if (gap) { - SHORT_COIL(); - SpinDelayUs(gap); - } - } - } + + i = 0; + for(;;) { + while(!(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_CLK)) { + if(BUTTON_PRESS()) { + DbpString("Stopped"); + return; + } + WDT_HIT(); + } + + if (ledcontrol) + LED_D_ON(); + + if(tab[i]) + OPEN_COIL(); + else + SHORT_COIL(); + + if (ledcontrol) + LED_D_OFF(); + + while(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_CLK) { + if(BUTTON_PRESS()) { + DbpString("Stopped"); + return; + } + WDT_HIT(); + } + + i++; + if(i == period) { + i = 0; + if (gap) { + SHORT_COIL(); + SpinDelayUs(gap); + } + } + } } #define DEBUG_FRAME_CONTENTS 1 @@ -530,314 +527,309 @@ void SimulateTagLowFrequencyBidir(int divisor, int t0) // compose fc/8 fc/10 waveform static void fc(int c, int *n) { - uint8_t *dest = (uint8_t *)BigBuf; - int idx; - - // for when we want an fc8 pattern every 4 logical bits - if(c==0) { - dest[((*n)++)]=1; - dest[((*n)++)]=1; - dest[((*n)++)]=0; - dest[((*n)++)]=0; - dest[((*n)++)]=0; - dest[((*n)++)]=0; - dest[((*n)++)]=0; - dest[((*n)++)]=0; - } - // an fc/8 encoded bit is a bit pattern of 11000000 x6 = 48 samples - if(c==8) { - for (idx=0; idx<6; idx++) { - dest[((*n)++)]=1; - dest[((*n)++)]=1; - dest[((*n)++)]=0; - dest[((*n)++)]=0; - dest[((*n)++)]=0; - dest[((*n)++)]=0; - dest[((*n)++)]=0; - dest[((*n)++)]=0; - } - } - - // an fc/10 encoded bit is a bit pattern of 1110000000 x5 = 50 samples - if(c==10) { - for (idx=0; idx<5; idx++) { - dest[((*n)++)]=1; - dest[((*n)++)]=1; - dest[((*n)++)]=1; - dest[((*n)++)]=0; - dest[((*n)++)]=0; - dest[((*n)++)]=0; - dest[((*n)++)]=0; - dest[((*n)++)]=0; - dest[((*n)++)]=0; - dest[((*n)++)]=0; - } - } + uint8_t *dest = (uint8_t *)BigBuf; + int idx; + + // for when we want an fc8 pattern every 4 logical bits + if(c==0) { + dest[((*n)++)]=1; + dest[((*n)++)]=1; + dest[((*n)++)]=0; + dest[((*n)++)]=0; + dest[((*n)++)]=0; + dest[((*n)++)]=0; + dest[((*n)++)]=0; + dest[((*n)++)]=0; + } + // an fc/8 encoded bit is a bit pattern of 11000000 x6 = 48 samples + if(c==8) { + for (idx=0; idx<6; idx++) { + dest[((*n)++)]=1; + dest[((*n)++)]=1; + dest[((*n)++)]=0; + dest[((*n)++)]=0; + dest[((*n)++)]=0; + dest[((*n)++)]=0; + dest[((*n)++)]=0; + dest[((*n)++)]=0; + } + } + + // an fc/10 encoded bit is a bit pattern of 1110000000 x5 = 50 samples + if(c==10) { + for (idx=0; idx<5; idx++) { + dest[((*n)++)]=1; + dest[((*n)++)]=1; + dest[((*n)++)]=1; + dest[((*n)++)]=0; + dest[((*n)++)]=0; + dest[((*n)++)]=0; + dest[((*n)++)]=0; + dest[((*n)++)]=0; + dest[((*n)++)]=0; + dest[((*n)++)]=0; + } + } } // prepare a waveform pattern in the buffer based on the ID given then // simulate a HID tag until the button is pressed void CmdHIDsimTAG(int hi, int lo, int ledcontrol) { - int n=0, i=0; - /* - HID tag bitstream format - The tag contains a 44bit unique code. This is sent out MSB first in sets of 4 bits - A 1 bit is represented as 6 fc8 and 5 fc10 patterns - A 0 bit is represented as 5 fc10 and 6 fc8 patterns - A fc8 is inserted before every 4 bits - A special start of frame pattern is used consisting a0b0 where a and b are neither 0 - nor 1 bits, they are special patterns (a = set of 12 fc8 and b = set of 10 fc10) - */ - - if (hi>0xFFF) { - DbpString("Tags can only have 44 bits."); - return; - } - fc(0,&n); - // special start of frame marker containing invalid bit sequences - fc(8, &n); fc(8, &n); // invalid - fc(8, &n); fc(10, &n); // logical 0 - fc(10, &n); fc(10, &n); // invalid - fc(8, &n); fc(10, &n); // logical 0 - - WDT_HIT(); - // manchester encode bits 43 to 32 - for (i=11; i>=0; i--) { - if ((i%4)==3) fc(0,&n); - if ((hi>>i)&1) { - fc(10, &n); fc(8, &n); // low-high transition - } else { - fc(8, &n); fc(10, &n); // high-low transition - } - } - - WDT_HIT(); - // manchester encode bits 31 to 0 - for (i=31; i>=0; i--) { - if ((i%4)==3) fc(0,&n); - if ((lo>>i)&1) { - fc(10, &n); fc(8, &n); // low-high transition - } else { - fc(8, &n); fc(10, &n); // high-low transition - } - } - - if (ledcontrol) - LED_A_ON(); - SimulateTagLowFrequency(n, 0, ledcontrol); - - if (ledcontrol) - LED_A_OFF(); + int n=0, i=0; + /* + HID tag bitstream format + The tag contains a 44bit unique code. This is sent out MSB first in sets of 4 bits + A 1 bit is represented as 6 fc8 and 5 fc10 patterns + A 0 bit is represented as 5 fc10 and 6 fc8 patterns + A fc8 is inserted before every 4 bits + A special start of frame pattern is used consisting a0b0 where a and b are neither 0 + nor 1 bits, they are special patterns (a = set of 12 fc8 and b = set of 10 fc10) + */ + + if (hi>0xFFF) { + DbpString("Tags can only have 44 bits."); + return; + } + fc(0,&n); + // special start of frame marker containing invalid bit sequences + fc(8, &n); fc(8, &n); // invalid + fc(8, &n); fc(10, &n); // logical 0 + fc(10, &n); fc(10, &n); // invalid + fc(8, &n); fc(10, &n); // logical 0 + + WDT_HIT(); + // manchester encode bits 43 to 32 + for (i=11; i>=0; i--) { + if ((i%4)==3) fc(0,&n); + if ((hi>>i)&1) { + fc(10, &n); fc(8, &n); // low-high transition + } else { + fc(8, &n); fc(10, &n); // high-low transition + } + } + + WDT_HIT(); + // manchester encode bits 31 to 0 + for (i=31; i>=0; i--) { + if ((i%4)==3) fc(0,&n); + if ((lo>>i)&1) { + fc(10, &n); fc(8, &n); // low-high transition + } else { + fc(8, &n); fc(10, &n); // high-low transition + } + } + + if (ledcontrol) + LED_A_ON(); + SimulateTagLowFrequency(n, 0, ledcontrol); + + if (ledcontrol) + LED_A_OFF(); } // loop to get raw HID waveform then FSK demodulate the TAG ID from it void CmdHIDdemodFSK(int findone, int *high, int *low, int ledcontrol) { - uint8_t *dest = (uint8_t *)BigBuf; - - size_t size=0; //, found=0; - uint32_t hi2=0, hi=0, lo=0; - - // Configure to go in 125Khz listen mode - LFSetupFPGAForADC(95, true); - - while(!BUTTON_PRESS()) { - - WDT_HIT(); - if (ledcontrol) LED_A_ON(); - - DoAcquisition125k_internal(-1,true); - size = sizeof(BigBuf); - if (size < 2000) continue; - // FSK demodulator - - int bitLen = HIDdemodFSK(dest,size,&hi2,&hi,&lo); - - WDT_HIT(); - - if (bitLen>0 && lo>0){ - // final loop, go over previously decoded manchester data and decode into usable tag ID - // 111000 bit pattern represent start of frame, 01 pattern represents a 1 and 10 represents a 0 - if (hi2 != 0){ //extra large HID tags - Dbprintf("TAG ID: %x%08x%08x (%d)", - (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF); - }else { //standard HID tags <38 bits - //Dbprintf("TAG ID: %x%08x (%d)",(unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF); //old print cmd - uint8_t bitlen = 0; - uint32_t fc = 0; - uint32_t cardnum = 0; - if (((hi>>5)&1)==1){//if bit 38 is set then < 37 bit format is used - uint32_t lo2=0; - lo2=(((hi & 31) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit - uint8_t idx3 = 1; - while(lo2>1){ //find last bit set to 1 (format len bit) - lo2=lo2>>1; - idx3++; - } - bitlen =idx3+19; - fc =0; - cardnum=0; - if(bitlen==26){ - cardnum = (lo>>1)&0xFFFF; - fc = (lo>>17)&0xFF; - } - if(bitlen==37){ - cardnum = (lo>>1)&0x7FFFF; - fc = ((hi&0xF)<<12)|(lo>>20); - } - if(bitlen==34){ - cardnum = (lo>>1)&0xFFFF; - fc= ((hi&1)<<15)|(lo>>17); - } - if(bitlen==35){ - cardnum = (lo>>1)&0xFFFFF; - fc = ((hi&1)<<11)|(lo>>21); - } - } - else { //if bit 38 is not set then 37 bit format is used - bitlen= 37; - fc =0; - cardnum=0; - if(bitlen==37){ - cardnum = (lo>>1)&0x7FFFF; - fc = ((hi&0xF)<<12)|(lo>>20); - } - } - //Dbprintf("TAG ID: %x%08x (%d)", - // (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF); - Dbprintf("TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d", - (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF, - (unsigned int) bitlen, (unsigned int) fc, (unsigned int) cardnum); - } - if (findone){ - if (ledcontrol) LED_A_OFF(); - return; - } - // reset - hi2 = hi = lo = 0; - } - WDT_HIT(); - //SpinDelay(50); - } - DbpString("Stopped"); - if (ledcontrol) LED_A_OFF(); + uint8_t *dest = (uint8_t *)BigBuf; + + size_t size=0; //, found=0; + uint32_t hi2=0, hi=0, lo=0; + + // Configure to go in 125Khz listen mode + LFSetupFPGAForADC(95, true); + + while(!BUTTON_PRESS()) { + + WDT_HIT(); + if (ledcontrol) LED_A_ON(); + + DoAcquisition125k_internal(-1,true); + // FSK demodulator + size = HIDdemodFSK(dest, sizeof(BigBuf), &hi2, &hi, &lo); + + WDT_HIT(); + + if (size>0 && lo>0){ + // final loop, go over previously decoded manchester data and decode into usable tag ID + // 111000 bit pattern represent start of frame, 01 pattern represents a 1 and 10 represents a 0 + if (hi2 != 0){ //extra large HID tags + Dbprintf("TAG ID: %x%08x%08x (%d)", + (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF); + }else { //standard HID tags <38 bits + //Dbprintf("TAG ID: %x%08x (%d)",(unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF); //old print cmd + uint8_t bitlen = 0; + uint32_t fc = 0; + uint32_t cardnum = 0; + if (((hi>>5)&1) == 1){//if bit 38 is set then < 37 bit format is used + uint32_t lo2=0; + lo2=(((hi & 31) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit + uint8_t idx3 = 1; + while(lo2 > 1){ //find last bit set to 1 (format len bit) + lo2=lo2 >> 1; + idx3++; + } + bitlen = idx3+19; + fc =0; + cardnum=0; + if(bitlen == 26){ + cardnum = (lo>>1)&0xFFFF; + fc = (lo>>17)&0xFF; + } + if(bitlen == 37){ + cardnum = (lo>>1)&0x7FFFF; + fc = ((hi&0xF)<<12)|(lo>>20); + } + if(bitlen == 34){ + cardnum = (lo>>1)&0xFFFF; + fc= ((hi&1)<<15)|(lo>>17); + } + if(bitlen == 35){ + cardnum = (lo>>1)&0xFFFFF; + fc = ((hi&1)<<11)|(lo>>21); + } + } + else { //if bit 38 is not set then 37 bit format is used + bitlen= 37; + fc =0; + cardnum=0; + if(bitlen==37){ + cardnum = (lo>>1)&0x7FFFF; + fc = ((hi&0xF)<<12)|(lo>>20); + } + } + //Dbprintf("TAG ID: %x%08x (%d)", + // (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF); + Dbprintf("TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d", + (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF, + (unsigned int) bitlen, (unsigned int) fc, (unsigned int) cardnum); + } + if (findone){ + if (ledcontrol) LED_A_OFF(); + return; + } + // reset + hi2 = hi = lo = 0; + } + WDT_HIT(); + } + DbpString("Stopped"); + if (ledcontrol) LED_A_OFF(); } void CmdEM410xdemod(int findone, int *high, int *low, int ledcontrol) { - uint8_t *dest = (uint8_t *)BigBuf; - - size_t size=0; //, found=0; - uint32_t bitLen=0; - int clk=0, invert=0, errCnt=0; - uint64_t lo=0; - // Configure to go in 125Khz listen mode - LFSetupFPGAForADC(95, true); - - while(!BUTTON_PRESS()) { - - WDT_HIT(); - if (ledcontrol) LED_A_ON(); - - DoAcquisition125k_internal(-1,true); - size = sizeof(BigBuf); - if (size < 2000) continue; - // FSK demodulator - //int askmandemod(uint8_t *BinStream,uint32_t *BitLen,int *clk, int *invert); - bitLen=size; - //Dbprintf("DEBUG: Buffer got"); - errCnt = askmandemod(dest,&bitLen,&clk,&invert); //HIDdemodFSK(dest,size,&hi2,&hi,&lo); - //Dbprintf("DEBUG: ASK Got"); - WDT_HIT(); - - if (errCnt>=0){ - lo = Em410xDecode(dest,bitLen); - //Dbprintf("DEBUG: EM GOT"); - //printEM410x(lo); - if (lo>0){ - Dbprintf("EM TAG ID: %02x%08x - (%05d_%03d_%08d)",(uint32_t)(lo>>32),(uint32_t)lo,(uint32_t)(lo&0xFFFF),(uint32_t)((lo>>16LL) & 0xFF),(uint32_t)(lo & 0xFFFFFF)); - } - if (findone){ - if (ledcontrol) LED_A_OFF(); - return; - } - } else{ - //Dbprintf("DEBUG: No Tag"); - } - WDT_HIT(); - lo = 0; - clk=0; - invert=0; - errCnt=0; - size=0; - //SpinDelay(50); - } - DbpString("Stopped"); - if (ledcontrol) LED_A_OFF(); + uint8_t *dest = (uint8_t *)BigBuf; + + size_t size=0; + int clk=0, invert=0, errCnt=0; + uint64_t lo=0; + // Configure to go in 125Khz listen mode + LFSetupFPGAForADC(95, true); + + while(!BUTTON_PRESS()) { + + WDT_HIT(); + if (ledcontrol) LED_A_ON(); + + DoAcquisition125k_internal(-1,true); + size = sizeof(BigBuf); + //Dbprintf("DEBUG: Buffer got"); + //askdemod and manchester decode + errCnt = askmandemod(dest, &size, &clk, &invert); + //Dbprintf("DEBUG: ASK Got"); + WDT_HIT(); + + if (errCnt>=0){ + lo = Em410xDecode(dest,size); + //Dbprintf("DEBUG: EM GOT"); + if (lo>0){ + Dbprintf("EM TAG ID: %02x%08x - (%05d_%03d_%08d)", + (uint32_t)(lo>>32), + (uint32_t)lo, + (uint32_t)(lo&0xFFFF), + (uint32_t)((lo>>16LL) & 0xFF), + (uint32_t)(lo & 0xFFFFFF)); + } + if (findone){ + if (ledcontrol) LED_A_OFF(); + return; + } + } else{ + //Dbprintf("DEBUG: No Tag"); + } + WDT_HIT(); + lo = 0; + clk=0; + invert=0; + errCnt=0; + size=0; + } + DbpString("Stopped"); + if (ledcontrol) LED_A_OFF(); } void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol) { - uint8_t *dest = (uint8_t *)BigBuf; - int idx=0; - uint32_t code=0, code2=0; - uint8_t version=0; - uint8_t facilitycode=0; - uint16_t number=0; - // Configure to go in 125Khz listen mode - LFSetupFPGAForADC(95, true); - - while(!BUTTON_PRESS()) { - WDT_HIT(); - if (ledcontrol) LED_A_ON(); - DoAcquisition125k_internal(-1,true); - //fskdemod and get start index - WDT_HIT(); - idx = IOdemodFSK(dest,sizeof(BigBuf)); - if (idx>0){ - //valid tag found - - //Index map - //0 10 20 30 40 50 60 - //| | | | | | | - //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23 - //----------------------------------------------------------------------------- - //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11 - // - //XSF(version)facility:codeone+codetwo - //Handle the data - if(findone){ //only print binary if we are doing one - Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx], dest[idx+1], dest[idx+2],dest[idx+3],dest[idx+4],dest[idx+5],dest[idx+6],dest[idx+7],dest[idx+8]); - Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+9], dest[idx+10],dest[idx+11],dest[idx+12],dest[idx+13],dest[idx+14],dest[idx+15],dest[idx+16],dest[idx+17]); - Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+18],dest[idx+19],dest[idx+20],dest[idx+21],dest[idx+22],dest[idx+23],dest[idx+24],dest[idx+25],dest[idx+26]); - Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+27],dest[idx+28],dest[idx+29],dest[idx+30],dest[idx+31],dest[idx+32],dest[idx+33],dest[idx+34],dest[idx+35]); - Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+36],dest[idx+37],dest[idx+38],dest[idx+39],dest[idx+40],dest[idx+41],dest[idx+42],dest[idx+43],dest[idx+44]); - Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+45],dest[idx+46],dest[idx+47],dest[idx+48],dest[idx+49],dest[idx+50],dest[idx+51],dest[idx+52],dest[idx+53]); - Dbprintf("%d%d%d%d%d%d%d%d %d%d",dest[idx+54],dest[idx+55],dest[idx+56],dest[idx+57],dest[idx+58],dest[idx+59],dest[idx+60],dest[idx+61],dest[idx+62],dest[idx+63]); - } - code = bytebits_to_byte(dest+idx,32); - code2 = bytebits_to_byte(dest+idx+32,32); - version = bytebits_to_byte(dest+idx+27,8); //14,4 - facilitycode = bytebits_to_byte(dest+idx+18,8) ; - number = (bytebits_to_byte(dest+idx+36,8)<<8)|(bytebits_to_byte(dest+idx+45,8)); //36,9 - - Dbprintf("XSF(%02d)%02x:%05d (%08x%08x)",version,facilitycode,number,code,code2); - // if we're only looking for one tag - if (findone){ - if (ledcontrol) LED_A_OFF(); - //LED_A_OFF(); - return; - } - code=code2=0; - version=facilitycode=0; - number=0; - idx=0; - } - WDT_HIT(); - } - DbpString("Stopped"); - if (ledcontrol) LED_A_OFF(); + uint8_t *dest = (uint8_t *)BigBuf; + int idx=0; + uint32_t code=0, code2=0; + uint8_t version=0; + uint8_t facilitycode=0; + uint16_t number=0; + // Configure to go in 125Khz listen mode + LFSetupFPGAForADC(95, true); + + while(!BUTTON_PRESS()) { + WDT_HIT(); + if (ledcontrol) LED_A_ON(); + DoAcquisition125k_internal(-1,true); + //fskdemod and get start index + WDT_HIT(); + idx = IOdemodFSK(dest,sizeof(BigBuf)); + if (idx>0){ + //valid tag found + + //Index map + //0 10 20 30 40 50 60 + //| | | | | | | + //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23 + //----------------------------------------------------------------------------- + //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11 + // + //XSF(version)facility:codeone+codetwo + //Handle the data + if(findone){ //only print binary if we are doing one + Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx], dest[idx+1], dest[idx+2],dest[idx+3],dest[idx+4],dest[idx+5],dest[idx+6],dest[idx+7],dest[idx+8]); + Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+9], dest[idx+10],dest[idx+11],dest[idx+12],dest[idx+13],dest[idx+14],dest[idx+15],dest[idx+16],dest[idx+17]); + Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+18],dest[idx+19],dest[idx+20],dest[idx+21],dest[idx+22],dest[idx+23],dest[idx+24],dest[idx+25],dest[idx+26]); + Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+27],dest[idx+28],dest[idx+29],dest[idx+30],dest[idx+31],dest[idx+32],dest[idx+33],dest[idx+34],dest[idx+35]); + Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+36],dest[idx+37],dest[idx+38],dest[idx+39],dest[idx+40],dest[idx+41],dest[idx+42],dest[idx+43],dest[idx+44]); + Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+45],dest[idx+46],dest[idx+47],dest[idx+48],dest[idx+49],dest[idx+50],dest[idx+51],dest[idx+52],dest[idx+53]); + Dbprintf("%d%d%d%d%d%d%d%d %d%d",dest[idx+54],dest[idx+55],dest[idx+56],dest[idx+57],dest[idx+58],dest[idx+59],dest[idx+60],dest[idx+61],dest[idx+62],dest[idx+63]); + } + code = bytebits_to_byte(dest+idx,32); + code2 = bytebits_to_byte(dest+idx+32,32); + version = bytebits_to_byte(dest+idx+27,8); //14,4 + facilitycode = bytebits_to_byte(dest+idx+18,8) ; + number = (bytebits_to_byte(dest+idx+36,8)<<8)|(bytebits_to_byte(dest+idx+45,8)); //36,9 + + Dbprintf("XSF(%02d)%02x:%05d (%08x%08x)",version,facilitycode,number,code,code2); + // if we're only looking for one tag + if (findone){ + if (ledcontrol) LED_A_OFF(); + //LED_A_OFF(); + return; + } + code=code2=0; + version=facilitycode=0; + number=0; + idx=0; + } + WDT_HIT(); + } + DbpString("Stopped"); + if (ledcontrol) LED_A_OFF(); } /*------------------------------ @@ -907,321 +899,321 @@ void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol) // Write one bit to card void T55xxWriteBit(int bit) { - FpgaDownloadAndGo(FPGA_BITSTREAM_LF); - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); - if (bit == 0) - SpinDelayUs(WRITE_0); - else - SpinDelayUs(WRITE_1); - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - SpinDelayUs(WRITE_GAP); + FpgaDownloadAndGo(FPGA_BITSTREAM_LF); + FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz + FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); + if (bit == 0) + SpinDelayUs(WRITE_0); + else + SpinDelayUs(WRITE_1); + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); + SpinDelayUs(WRITE_GAP); } // Write one card block in page 0, no lock void T55xxWriteBlock(uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t PwdMode) { - //unsigned int i; //enio adjustment 12/10/14 - uint32_t i; - - FpgaDownloadAndGo(FPGA_BITSTREAM_LF); - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); - - // Give it a bit of time for the resonant antenna to settle. - // And for the tag to fully power up - SpinDelay(150); - - // Now start writting - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - SpinDelayUs(START_GAP); - - // Opcode - T55xxWriteBit(1); - T55xxWriteBit(0); //Page 0 - if (PwdMode == 1){ - // Pwd - for (i = 0x80000000; i != 0; i >>= 1) - T55xxWriteBit(Pwd & i); - } - // Lock bit - T55xxWriteBit(0); - - // Data - for (i = 0x80000000; i != 0; i >>= 1) - T55xxWriteBit(Data & i); - - // Block - for (i = 0x04; i != 0; i >>= 1) - T55xxWriteBit(Block & i); - - // Now perform write (nominal is 5.6 ms for T55x7 and 18ms for E5550, - // so wait a little more) - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); - SpinDelay(20); - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); + //unsigned int i; //enio adjustment 12/10/14 + uint32_t i; + + FpgaDownloadAndGo(FPGA_BITSTREAM_LF); + FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz + FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); + + // Give it a bit of time for the resonant antenna to settle. + // And for the tag to fully power up + SpinDelay(150); + + // Now start writting + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); + SpinDelayUs(START_GAP); + + // Opcode + T55xxWriteBit(1); + T55xxWriteBit(0); //Page 0 + if (PwdMode == 1){ + // Pwd + for (i = 0x80000000; i != 0; i >>= 1) + T55xxWriteBit(Pwd & i); + } + // Lock bit + T55xxWriteBit(0); + + // Data + for (i = 0x80000000; i != 0; i >>= 1) + T55xxWriteBit(Data & i); + + // Block + for (i = 0x04; i != 0; i >>= 1) + T55xxWriteBit(Block & i); + + // Now perform write (nominal is 5.6 ms for T55x7 and 18ms for E5550, + // so wait a little more) + FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz + FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); + SpinDelay(20); + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); } // Read one card block in page 0 void T55xxReadBlock(uint32_t Block, uint32_t Pwd, uint8_t PwdMode) { - uint8_t *dest = (uint8_t *)BigBuf; - //int m=0, i=0; //enio adjustment 12/10/14 - uint32_t m=0, i=0; - FpgaDownloadAndGo(FPGA_BITSTREAM_LF); - m = sizeof(BigBuf); - // Clear destination buffer before sending the command - memset(dest, 128, m); - // Connect the A/D to the peak-detected low-frequency path. - SetAdcMuxFor(GPIO_MUXSEL_LOPKD); - // Now set up the SSC to get the ADC samples that are now streaming at us. - FpgaSetupSsc(); - - LED_D_ON(); - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); - - // Give it a bit of time for the resonant antenna to settle. - // And for the tag to fully power up - SpinDelay(150); - - // Now start writting - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - SpinDelayUs(START_GAP); - - // Opcode - T55xxWriteBit(1); - T55xxWriteBit(0); //Page 0 - if (PwdMode == 1){ - // Pwd - for (i = 0x80000000; i != 0; i >>= 1) - T55xxWriteBit(Pwd & i); - } - // Lock bit - T55xxWriteBit(0); - // Block - for (i = 0x04; i != 0; i >>= 1) - T55xxWriteBit(Block & i); - - // Turn field on to read the response - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); - - // Now do the acquisition - i = 0; - for(;;) { - if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_TXRDY) { - AT91C_BASE_SSC->SSC_THR = 0x43; - } - if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_RXRDY) { - dest[i] = (uint8_t)AT91C_BASE_SSC->SSC_RHR; - // we don't care about actual value, only if it's more or less than a - // threshold essentially we capture zero crossings for later analysis - // if(dest[i] < 127) dest[i] = 0; else dest[i] = 1; - i++; - if (i >= m) break; - } - } - - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off - LED_D_OFF(); - DbpString("DONE!"); + uint8_t *dest = (uint8_t *)BigBuf; + //int m=0, i=0; //enio adjustment 12/10/14 + uint32_t m=0, i=0; + FpgaDownloadAndGo(FPGA_BITSTREAM_LF); + m = sizeof(BigBuf); + // Clear destination buffer before sending the command + memset(dest, 128, m); + // Connect the A/D to the peak-detected low-frequency path. + SetAdcMuxFor(GPIO_MUXSEL_LOPKD); + // Now set up the SSC to get the ADC samples that are now streaming at us. + FpgaSetupSsc(); + + LED_D_ON(); + FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz + FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); + + // Give it a bit of time for the resonant antenna to settle. + // And for the tag to fully power up + SpinDelay(150); + + // Now start writting + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); + SpinDelayUs(START_GAP); + + // Opcode + T55xxWriteBit(1); + T55xxWriteBit(0); //Page 0 + if (PwdMode == 1){ + // Pwd + for (i = 0x80000000; i != 0; i >>= 1) + T55xxWriteBit(Pwd & i); + } + // Lock bit + T55xxWriteBit(0); + // Block + for (i = 0x04; i != 0; i >>= 1) + T55xxWriteBit(Block & i); + + // Turn field on to read the response + FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz + FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); + + // Now do the acquisition + i = 0; + for(;;) { + if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_TXRDY) { + AT91C_BASE_SSC->SSC_THR = 0x43; + } + if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_RXRDY) { + dest[i] = (uint8_t)AT91C_BASE_SSC->SSC_RHR; + // we don't care about actual value, only if it's more or less than a + // threshold essentially we capture zero crossings for later analysis + // if(dest[i] < 127) dest[i] = 0; else dest[i] = 1; + i++; + if (i >= m) break; + } + } + + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off + LED_D_OFF(); + DbpString("DONE!"); } // Read card traceability data (page 1) void T55xxReadTrace(void){ - uint8_t *dest = (uint8_t *)BigBuf; - int m=0, i=0; - - FpgaDownloadAndGo(FPGA_BITSTREAM_LF); - m = sizeof(BigBuf); - // Clear destination buffer before sending the command - memset(dest, 128, m); - // Connect the A/D to the peak-detected low-frequency path. - SetAdcMuxFor(GPIO_MUXSEL_LOPKD); - // Now set up the SSC to get the ADC samples that are now streaming at us. - FpgaSetupSsc(); - - LED_D_ON(); - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); - - // Give it a bit of time for the resonant antenna to settle. - // And for the tag to fully power up - SpinDelay(150); - - // Now start writting - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - SpinDelayUs(START_GAP); - - // Opcode - T55xxWriteBit(1); - T55xxWriteBit(1); //Page 1 - - // Turn field on to read the response - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); - - // Now do the acquisition - i = 0; - for(;;) { - if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_TXRDY) { - AT91C_BASE_SSC->SSC_THR = 0x43; - } - if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_RXRDY) { - dest[i] = (uint8_t)AT91C_BASE_SSC->SSC_RHR; - i++; - if (i >= m) break; - } - } - - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off - LED_D_OFF(); - DbpString("DONE!"); + uint8_t *dest = (uint8_t *)BigBuf; + int m=0, i=0; + + FpgaDownloadAndGo(FPGA_BITSTREAM_LF); + m = sizeof(BigBuf); + // Clear destination buffer before sending the command + memset(dest, 128, m); + // Connect the A/D to the peak-detected low-frequency path. + SetAdcMuxFor(GPIO_MUXSEL_LOPKD); + // Now set up the SSC to get the ADC samples that are now streaming at us. + FpgaSetupSsc(); + + LED_D_ON(); + FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz + FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); + + // Give it a bit of time for the resonant antenna to settle. + // And for the tag to fully power up + SpinDelay(150); + + // Now start writting + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); + SpinDelayUs(START_GAP); + + // Opcode + T55xxWriteBit(1); + T55xxWriteBit(1); //Page 1 + + // Turn field on to read the response + FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz + FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); + + // Now do the acquisition + i = 0; + for(;;) { + if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_TXRDY) { + AT91C_BASE_SSC->SSC_THR = 0x43; + } + if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_RXRDY) { + dest[i] = (uint8_t)AT91C_BASE_SSC->SSC_RHR; + i++; + if (i >= m) break; + } + } + + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off + LED_D_OFF(); + DbpString("DONE!"); } /*-------------- Cloning routines -----------*/ // Copy HID id to card and setup block 0 config void CopyHIDtoT55x7(uint32_t hi2, uint32_t hi, uint32_t lo, uint8_t longFMT) { - int data1=0, data2=0, data3=0, data4=0, data5=0, data6=0; //up to six blocks for long format - int last_block = 0; - - if (longFMT){ - // Ensure no more than 84 bits supplied - if (hi2>0xFFFFF) { - DbpString("Tags can only have 84 bits."); - return; - } - // Build the 6 data blocks for supplied 84bit ID - last_block = 6; - data1 = 0x1D96A900; // load preamble (1D) & long format identifier (9E manchester encoded) - for (int i=0;i<4;i++) { - if (hi2 & (1<<(19-i))) - data1 |= (1<<(((3-i)*2)+1)); // 1 -> 10 - else - data1 |= (1<<((3-i)*2)); // 0 -> 01 - } - - data2 = 0; - for (int i=0;i<16;i++) { - if (hi2 & (1<<(15-i))) - data2 |= (1<<(((15-i)*2)+1)); // 1 -> 10 - else - data2 |= (1<<((15-i)*2)); // 0 -> 01 - } - - data3 = 0; - for (int i=0;i<16;i++) { - if (hi & (1<<(31-i))) - data3 |= (1<<(((15-i)*2)+1)); // 1 -> 10 - else - data3 |= (1<<((15-i)*2)); // 0 -> 01 - } - - data4 = 0; - for (int i=0;i<16;i++) { - if (hi & (1<<(15-i))) - data4 |= (1<<(((15-i)*2)+1)); // 1 -> 10 - else - data4 |= (1<<((15-i)*2)); // 0 -> 01 - } - - data5 = 0; - for (int i=0;i<16;i++) { - if (lo & (1<<(31-i))) - data5 |= (1<<(((15-i)*2)+1)); // 1 -> 10 - else - data5 |= (1<<((15-i)*2)); // 0 -> 01 - } - - data6 = 0; - for (int i=0;i<16;i++) { - if (lo & (1<<(15-i))) - data6 |= (1<<(((15-i)*2)+1)); // 1 -> 10 - else - data6 |= (1<<((15-i)*2)); // 0 -> 01 - } - } - else { - // Ensure no more than 44 bits supplied - if (hi>0xFFF) { - DbpString("Tags can only have 44 bits."); - return; - } - - // Build the 3 data blocks for supplied 44bit ID - last_block = 3; - - data1 = 0x1D000000; // load preamble - - for (int i=0;i<12;i++) { - if (hi & (1<<(11-i))) - data1 |= (1<<(((11-i)*2)+1)); // 1 -> 10 - else - data1 |= (1<<((11-i)*2)); // 0 -> 01 - } - - data2 = 0; - for (int i=0;i<16;i++) { - if (lo & (1<<(31-i))) - data2 |= (1<<(((15-i)*2)+1)); // 1 -> 10 - else - data2 |= (1<<((15-i)*2)); // 0 -> 01 - } - - data3 = 0; - for (int i=0;i<16;i++) { - if (lo & (1<<(15-i))) - data3 |= (1<<(((15-i)*2)+1)); // 1 -> 10 - else - data3 |= (1<<((15-i)*2)); // 0 -> 01 - } - } - - LED_D_ON(); - // Program the data blocks for supplied ID - // and the block 0 for HID format - T55xxWriteBlock(data1,1,0,0); - T55xxWriteBlock(data2,2,0,0); - T55xxWriteBlock(data3,3,0,0); - - if (longFMT) { // if long format there are 6 blocks - T55xxWriteBlock(data4,4,0,0); - T55xxWriteBlock(data5,5,0,0); - T55xxWriteBlock(data6,6,0,0); - } - - // Config for HID (RF/50, FSK2a, Maxblock=3 for short/6 for long) - T55xxWriteBlock(T55x7_BITRATE_RF_50 | - T55x7_MODULATION_FSK2a | - last_block << T55x7_MAXBLOCK_SHIFT, - 0,0,0); - - LED_D_OFF(); - - DbpString("DONE!"); + int data1=0, data2=0, data3=0, data4=0, data5=0, data6=0; //up to six blocks for long format + int last_block = 0; + + if (longFMT){ + // Ensure no more than 84 bits supplied + if (hi2>0xFFFFF) { + DbpString("Tags can only have 84 bits."); + return; + } + // Build the 6 data blocks for supplied 84bit ID + last_block = 6; + data1 = 0x1D96A900; // load preamble (1D) & long format identifier (9E manchester encoded) + for (int i=0;i<4;i++) { + if (hi2 & (1<<(19-i))) + data1 |= (1<<(((3-i)*2)+1)); // 1 -> 10 + else + data1 |= (1<<((3-i)*2)); // 0 -> 01 + } + + data2 = 0; + for (int i=0;i<16;i++) { + if (hi2 & (1<<(15-i))) + data2 |= (1<<(((15-i)*2)+1)); // 1 -> 10 + else + data2 |= (1<<((15-i)*2)); // 0 -> 01 + } + + data3 = 0; + for (int i=0;i<16;i++) { + if (hi & (1<<(31-i))) + data3 |= (1<<(((15-i)*2)+1)); // 1 -> 10 + else + data3 |= (1<<((15-i)*2)); // 0 -> 01 + } + + data4 = 0; + for (int i=0;i<16;i++) { + if (hi & (1<<(15-i))) + data4 |= (1<<(((15-i)*2)+1)); // 1 -> 10 + else + data4 |= (1<<((15-i)*2)); // 0 -> 01 + } + + data5 = 0; + for (int i=0;i<16;i++) { + if (lo & (1<<(31-i))) + data5 |= (1<<(((15-i)*2)+1)); // 1 -> 10 + else + data5 |= (1<<((15-i)*2)); // 0 -> 01 + } + + data6 = 0; + for (int i=0;i<16;i++) { + if (lo & (1<<(15-i))) + data6 |= (1<<(((15-i)*2)+1)); // 1 -> 10 + else + data6 |= (1<<((15-i)*2)); // 0 -> 01 + } + } + else { + // Ensure no more than 44 bits supplied + if (hi>0xFFF) { + DbpString("Tags can only have 44 bits."); + return; + } + + // Build the 3 data blocks for supplied 44bit ID + last_block = 3; + + data1 = 0x1D000000; // load preamble + + for (int i=0;i<12;i++) { + if (hi & (1<<(11-i))) + data1 |= (1<<(((11-i)*2)+1)); // 1 -> 10 + else + data1 |= (1<<((11-i)*2)); // 0 -> 01 + } + + data2 = 0; + for (int i=0;i<16;i++) { + if (lo & (1<<(31-i))) + data2 |= (1<<(((15-i)*2)+1)); // 1 -> 10 + else + data2 |= (1<<((15-i)*2)); // 0 -> 01 + } + + data3 = 0; + for (int i=0;i<16;i++) { + if (lo & (1<<(15-i))) + data3 |= (1<<(((15-i)*2)+1)); // 1 -> 10 + else + data3 |= (1<<((15-i)*2)); // 0 -> 01 + } + } + + LED_D_ON(); + // Program the data blocks for supplied ID + // and the block 0 for HID format + T55xxWriteBlock(data1,1,0,0); + T55xxWriteBlock(data2,2,0,0); + T55xxWriteBlock(data3,3,0,0); + + if (longFMT) { // if long format there are 6 blocks + T55xxWriteBlock(data4,4,0,0); + T55xxWriteBlock(data5,5,0,0); + T55xxWriteBlock(data6,6,0,0); + } + + // Config for HID (RF/50, FSK2a, Maxblock=3 for short/6 for long) + T55xxWriteBlock(T55x7_BITRATE_RF_50 | + T55x7_MODULATION_FSK2a | + last_block << T55x7_MAXBLOCK_SHIFT, + 0,0,0); + + LED_D_OFF(); + + DbpString("DONE!"); } void CopyIOtoT55x7(uint32_t hi, uint32_t lo, uint8_t longFMT) { - int data1=0, data2=0; //up to six blocks for long format - - data1 = hi; // load preamble - data2 = lo; - - LED_D_ON(); - // Program the data blocks for supplied ID - // and the block 0 for HID format - T55xxWriteBlock(data1,1,0,0); - T55xxWriteBlock(data2,2,0,0); - - //Config Block - T55xxWriteBlock(0x00147040,0,0,0); - LED_D_OFF(); - - DbpString("DONE!"); + int data1=0, data2=0; //up to six blocks for long format + + data1 = hi; // load preamble + data2 = lo; + + LED_D_ON(); + // Program the data blocks for supplied ID + // and the block 0 for HID format + T55xxWriteBlock(data1,1,0,0); + T55xxWriteBlock(data2,2,0,0); + + //Config Block + T55xxWriteBlock(0x00147040,0,0,0); + LED_D_OFF(); + + DbpString("DONE!"); } // Define 9bit header for EM410x tags @@ -1230,151 +1222,151 @@ void CopyIOtoT55x7(uint32_t hi, uint32_t lo, uint8_t longFMT) void WriteEM410x(uint32_t card, uint32_t id_hi, uint32_t id_lo) { - int i, id_bit; - uint64_t id = EM410X_HEADER; - uint64_t rev_id = 0; // reversed ID - int c_parity[4]; // column parity - int r_parity = 0; // row parity - uint32_t clock = 0; - - // Reverse ID bits given as parameter (for simpler operations) - for (i = 0; i < EM410X_ID_LENGTH; ++i) { - if (i < 32) { - rev_id = (rev_id << 1) | (id_lo & 1); - id_lo >>= 1; - } else { - rev_id = (rev_id << 1) | (id_hi & 1); - id_hi >>= 1; - } - } - - for (i = 0; i < EM410X_ID_LENGTH; ++i) { - id_bit = rev_id & 1; - - if (i % 4 == 0) { - // Don't write row parity bit at start of parsing - if (i) - id = (id << 1) | r_parity; - // Start counting parity for new row - r_parity = id_bit; - } else { - // Count row parity - r_parity ^= id_bit; - } - - // First elements in column? - if (i < 4) - // Fill out first elements - c_parity[i] = id_bit; - else - // Count column parity - c_parity[i % 4] ^= id_bit; - - // Insert ID bit - id = (id << 1) | id_bit; - rev_id >>= 1; - } - - // Insert parity bit of last row - id = (id << 1) | r_parity; - - // Fill out column parity at the end of tag - for (i = 0; i < 4; ++i) - id = (id << 1) | c_parity[i]; - - // Add stop bit - id <<= 1; - - Dbprintf("Started writing %s tag ...", card ? "T55x7":"T5555"); - LED_D_ON(); - - // Write EM410x ID - T55xxWriteBlock((uint32_t)(id >> 32), 1, 0, 0); - T55xxWriteBlock((uint32_t)id, 2, 0, 0); - - // Config for EM410x (RF/64, Manchester, Maxblock=2) - if (card) { - // Clock rate is stored in bits 8-15 of the card value - clock = (card & 0xFF00) >> 8; - Dbprintf("Clock rate: %d", clock); - switch (clock) - { - case 32: - clock = T55x7_BITRATE_RF_32; - break; - case 16: - clock = T55x7_BITRATE_RF_16; - break; - case 0: - // A value of 0 is assumed to be 64 for backwards-compatibility - // Fall through... - case 64: - clock = T55x7_BITRATE_RF_64; - break; - default: - Dbprintf("Invalid clock rate: %d", clock); - return; - } - - // Writing configuration for T55x7 tag - T55xxWriteBlock(clock | - T55x7_MODULATION_MANCHESTER | - 2 << T55x7_MAXBLOCK_SHIFT, - 0, 0, 0); - } - else - // Writing configuration for T5555(Q5) tag - T55xxWriteBlock(0x1F << T5555_BITRATE_SHIFT | - T5555_MODULATION_MANCHESTER | - 2 << T5555_MAXBLOCK_SHIFT, - 0, 0, 0); - - LED_D_OFF(); - Dbprintf("Tag %s written with 0x%08x%08x\n", card ? "T55x7":"T5555", - (uint32_t)(id >> 32), (uint32_t)id); + int i, id_bit; + uint64_t id = EM410X_HEADER; + uint64_t rev_id = 0; // reversed ID + int c_parity[4]; // column parity + int r_parity = 0; // row parity + uint32_t clock = 0; + + // Reverse ID bits given as parameter (for simpler operations) + for (i = 0; i < EM410X_ID_LENGTH; ++i) { + if (i < 32) { + rev_id = (rev_id << 1) | (id_lo & 1); + id_lo >>= 1; + } else { + rev_id = (rev_id << 1) | (id_hi & 1); + id_hi >>= 1; + } + } + + for (i = 0; i < EM410X_ID_LENGTH; ++i) { + id_bit = rev_id & 1; + + if (i % 4 == 0) { + // Don't write row parity bit at start of parsing + if (i) + id = (id << 1) | r_parity; + // Start counting parity for new row + r_parity = id_bit; + } else { + // Count row parity + r_parity ^= id_bit; + } + + // First elements in column? + if (i < 4) + // Fill out first elements + c_parity[i] = id_bit; + else + // Count column parity + c_parity[i % 4] ^= id_bit; + + // Insert ID bit + id = (id << 1) | id_bit; + rev_id >>= 1; + } + + // Insert parity bit of last row + id = (id << 1) | r_parity; + + // Fill out column parity at the end of tag + for (i = 0; i < 4; ++i) + id = (id << 1) | c_parity[i]; + + // Add stop bit + id <<= 1; + + Dbprintf("Started writing %s tag ...", card ? "T55x7":"T5555"); + LED_D_ON(); + + // Write EM410x ID + T55xxWriteBlock((uint32_t)(id >> 32), 1, 0, 0); + T55xxWriteBlock((uint32_t)id, 2, 0, 0); + + // Config for EM410x (RF/64, Manchester, Maxblock=2) + if (card) { + // Clock rate is stored in bits 8-15 of the card value + clock = (card & 0xFF00) >> 8; + Dbprintf("Clock rate: %d", clock); + switch (clock) + { + case 32: + clock = T55x7_BITRATE_RF_32; + break; + case 16: + clock = T55x7_BITRATE_RF_16; + break; + case 0: + // A value of 0 is assumed to be 64 for backwards-compatibility + // Fall through... + case 64: + clock = T55x7_BITRATE_RF_64; + break; + default: + Dbprintf("Invalid clock rate: %d", clock); + return; + } + + // Writing configuration for T55x7 tag + T55xxWriteBlock(clock | + T55x7_MODULATION_MANCHESTER | + 2 << T55x7_MAXBLOCK_SHIFT, + 0, 0, 0); + } + else + // Writing configuration for T5555(Q5) tag + T55xxWriteBlock(0x1F << T5555_BITRATE_SHIFT | + T5555_MODULATION_MANCHESTER | + 2 << T5555_MAXBLOCK_SHIFT, + 0, 0, 0); + + LED_D_OFF(); + Dbprintf("Tag %s written with 0x%08x%08x\n", card ? "T55x7":"T5555", + (uint32_t)(id >> 32), (uint32_t)id); } // Clone Indala 64-bit tag by UID to T55x7 void CopyIndala64toT55x7(int hi, int lo) { - //Program the 2 data blocks for supplied 64bit UID - // and the block 0 for Indala64 format - T55xxWriteBlock(hi,1,0,0); - T55xxWriteBlock(lo,2,0,0); - //Config for Indala (RF/32;PSK1 with RF/2;Maxblock=2) - T55xxWriteBlock(T55x7_BITRATE_RF_32 | - T55x7_MODULATION_PSK1 | - 2 << T55x7_MAXBLOCK_SHIFT, - 0, 0, 0); - //Alternative config for Indala (Extended mode;RF/32;PSK1 with RF/2;Maxblock=2;Inverse data) - // T5567WriteBlock(0x603E1042,0); + //Program the 2 data blocks for supplied 64bit UID + // and the block 0 for Indala64 format + T55xxWriteBlock(hi,1,0,0); + T55xxWriteBlock(lo,2,0,0); + //Config for Indala (RF/32;PSK1 with RF/2;Maxblock=2) + T55xxWriteBlock(T55x7_BITRATE_RF_32 | + T55x7_MODULATION_PSK1 | + 2 << T55x7_MAXBLOCK_SHIFT, + 0, 0, 0); + //Alternative config for Indala (Extended mode;RF/32;PSK1 with RF/2;Maxblock=2;Inverse data) + // T5567WriteBlock(0x603E1042,0); - DbpString("DONE!"); + DbpString("DONE!"); -} +} void CopyIndala224toT55x7(int uid1, int uid2, int uid3, int uid4, int uid5, int uid6, int uid7) { - //Program the 7 data blocks for supplied 224bit UID - // and the block 0 for Indala224 format - T55xxWriteBlock(uid1,1,0,0); - T55xxWriteBlock(uid2,2,0,0); - T55xxWriteBlock(uid3,3,0,0); - T55xxWriteBlock(uid4,4,0,0); - T55xxWriteBlock(uid5,5,0,0); - T55xxWriteBlock(uid6,6,0,0); - T55xxWriteBlock(uid7,7,0,0); - //Config for Indala (RF/32;PSK1 with RF/2;Maxblock=7) - T55xxWriteBlock(T55x7_BITRATE_RF_32 | - T55x7_MODULATION_PSK1 | - 7 << T55x7_MAXBLOCK_SHIFT, - 0,0,0); - //Alternative config for Indala (Extended mode;RF/32;PSK1 with RF/2;Maxblock=7;Inverse data) - // T5567WriteBlock(0x603E10E2,0); - - DbpString("DONE!"); + //Program the 7 data blocks for supplied 224bit UID + // and the block 0 for Indala224 format + T55xxWriteBlock(uid1,1,0,0); + T55xxWriteBlock(uid2,2,0,0); + T55xxWriteBlock(uid3,3,0,0); + T55xxWriteBlock(uid4,4,0,0); + T55xxWriteBlock(uid5,5,0,0); + T55xxWriteBlock(uid6,6,0,0); + T55xxWriteBlock(uid7,7,0,0); + //Config for Indala (RF/32;PSK1 with RF/2;Maxblock=7) + T55xxWriteBlock(T55x7_BITRATE_RF_32 | + T55x7_MODULATION_PSK1 | + 7 << T55x7_MAXBLOCK_SHIFT, + 0,0,0); + //Alternative config for Indala (Extended mode;RF/32;PSK1 with RF/2;Maxblock=7;Inverse data) + // T5567WriteBlock(0x603E10E2,0); + + DbpString("DONE!"); } @@ -1383,261 +1375,261 @@ void CopyIndala224toT55x7(int uid1, int uid2, int uid3, int uid4, int uid5, int #define max(x,y) ( x GraphBuffer[0]) { - while(i < GraphTraceLen) { - if( !(GraphBuffer[i] > GraphBuffer[i-1]) && GraphBuffer[i] > lmax) - break; - i++; - } - dir = 0; - } - else { - while(i < GraphTraceLen) { - if( !(GraphBuffer[i] < GraphBuffer[i-1]) && GraphBuffer[i] < lmin) - break; - i++; - } - dir = 1; - } - - lastval = i++; - half_switch = 0; - pmc = 0; - block_done = 0; - - for (bitidx = 0; i < GraphTraceLen; i++) - { - if ( (GraphBuffer[i-1] > GraphBuffer[i] && dir == 1 && GraphBuffer[i] > lmax) || (GraphBuffer[i-1] < GraphBuffer[i] && dir == 0 && GraphBuffer[i] < lmin)) - { - lc = i - lastval; - lastval = i; - - // Switch depending on lc length: - // Tolerance is 1/8 of clock rate (arbitrary) - if (abs(lc-clock/4) < tolerance) { - // 16T0 - if((i - pmc) == lc) { /* 16T0 was previous one */ - /* It's a PMC ! */ - i += (128+127+16+32+33+16)-1; - lastval = i; - pmc = 0; - block_done = 1; - } - else { - pmc = i; - } - } else if (abs(lc-clock/2) < tolerance) { - // 32TO - if((i - pmc) == lc) { /* 16T0 was previous one */ - /* It's a PMC ! */ - i += (128+127+16+32+33)-1; - lastval = i; - pmc = 0; - block_done = 1; - } - else if(half_switch == 1) { - BitStream[bitidx++] = 0; - half_switch = 0; - } - else - half_switch++; - } else if (abs(lc-clock) < tolerance) { - // 64TO - BitStream[bitidx++] = 1; - } else { - // Error - warnings++; - if (warnings > 10) - { - Dbprintf("Error: too many detection errors, aborting."); - return 0; - } - } - - if(block_done == 1) { - if(bitidx == 128) { - for(j=0; j<16; j++) { - Blocks[num_blocks][j] = 128*BitStream[j*8+7]+ - 64*BitStream[j*8+6]+ - 32*BitStream[j*8+5]+ - 16*BitStream[j*8+4]+ - 8*BitStream[j*8+3]+ - 4*BitStream[j*8+2]+ - 2*BitStream[j*8+1]+ - BitStream[j*8]; - } - num_blocks++; - } - bitidx = 0; - block_done = 0; - half_switch = 0; - } - if(i < GraphTraceLen) - { - if (GraphBuffer[i-1] > GraphBuffer[i]) dir=0; - else dir = 1; - } - } - if(bitidx==255) - bitidx=0; - warnings = 0; - if(num_blocks == 4) break; - } - memcpy(outBlocks, Blocks, 16*num_blocks); - return num_blocks; + uint8_t BitStream[256]; + uint8_t Blocks[8][16]; + uint8_t *GraphBuffer = (uint8_t *)BigBuf; + int GraphTraceLen = sizeof(BigBuf); + int i, j, lastval, bitidx, half_switch; + int clock = 64; + int tolerance = clock / 8; + int pmc, block_done; + int lc, warnings = 0; + int num_blocks = 0; + int lmin=128, lmax=128; + uint8_t dir; + + AcquireRawAdcSamples125k(0); + + lmin = 64; + lmax = 192; + + i = 2; + + /* Find first local max/min */ + if(GraphBuffer[1] > GraphBuffer[0]) { + while(i < GraphTraceLen) { + if( !(GraphBuffer[i] > GraphBuffer[i-1]) && GraphBuffer[i] > lmax) + break; + i++; + } + dir = 0; + } + else { + while(i < GraphTraceLen) { + if( !(GraphBuffer[i] < GraphBuffer[i-1]) && GraphBuffer[i] < lmin) + break; + i++; + } + dir = 1; + } + + lastval = i++; + half_switch = 0; + pmc = 0; + block_done = 0; + + for (bitidx = 0; i < GraphTraceLen; i++) + { + if ( (GraphBuffer[i-1] > GraphBuffer[i] && dir == 1 && GraphBuffer[i] > lmax) || (GraphBuffer[i-1] < GraphBuffer[i] && dir == 0 && GraphBuffer[i] < lmin)) + { + lc = i - lastval; + lastval = i; + + // Switch depending on lc length: + // Tolerance is 1/8 of clock rate (arbitrary) + if (abs(lc-clock/4) < tolerance) { + // 16T0 + if((i - pmc) == lc) { /* 16T0 was previous one */ + /* It's a PMC ! */ + i += (128+127+16+32+33+16)-1; + lastval = i; + pmc = 0; + block_done = 1; + } + else { + pmc = i; + } + } else if (abs(lc-clock/2) < tolerance) { + // 32TO + if((i - pmc) == lc) { /* 16T0 was previous one */ + /* It's a PMC ! */ + i += (128+127+16+32+33)-1; + lastval = i; + pmc = 0; + block_done = 1; + } + else if(half_switch == 1) { + BitStream[bitidx++] = 0; + half_switch = 0; + } + else + half_switch++; + } else if (abs(lc-clock) < tolerance) { + // 64TO + BitStream[bitidx++] = 1; + } else { + // Error + warnings++; + if (warnings > 10) + { + Dbprintf("Error: too many detection errors, aborting."); + return 0; + } + } + + if(block_done == 1) { + if(bitidx == 128) { + for(j=0; j<16; j++) { + Blocks[num_blocks][j] = 128*BitStream[j*8+7]+ + 64*BitStream[j*8+6]+ + 32*BitStream[j*8+5]+ + 16*BitStream[j*8+4]+ + 8*BitStream[j*8+3]+ + 4*BitStream[j*8+2]+ + 2*BitStream[j*8+1]+ + BitStream[j*8]; + } + num_blocks++; + } + bitidx = 0; + block_done = 0; + half_switch = 0; + } + if(i < GraphTraceLen) + { + if (GraphBuffer[i-1] > GraphBuffer[i]) dir=0; + else dir = 1; + } + } + if(bitidx==255) + bitidx=0; + warnings = 0; + if(num_blocks == 4) break; + } + memcpy(outBlocks, Blocks, 16*num_blocks); + return num_blocks; } int IsBlock0PCF7931(uint8_t *Block) { - // Assume RFU means 0 :) - if((memcmp(Block, "\x00\x00\x00\x00\x00\x00\x00\x01", 8) == 0) && memcmp(Block+9, "\x00\x00\x00\x00\x00\x00\x00", 7) == 0) // PAC enabled - return 1; - if((memcmp(Block+9, "\x00\x00\x00\x00\x00\x00\x00", 7) == 0) && Block[7] == 0) // PAC disabled, can it *really* happen ? - return 1; - return 0; + // Assume RFU means 0 :) + if((memcmp(Block, "\x00\x00\x00\x00\x00\x00\x00\x01", 8) == 0) && memcmp(Block+9, "\x00\x00\x00\x00\x00\x00\x00", 7) == 0) // PAC enabled + return 1; + if((memcmp(Block+9, "\x00\x00\x00\x00\x00\x00\x00", 7) == 0) && Block[7] == 0) // PAC disabled, can it *really* happen ? + return 1; + return 0; } int IsBlock1PCF7931(uint8_t *Block) { - // Assume RFU means 0 :) - if(Block[10] == 0 && Block[11] == 0 && Block[12] == 0 && Block[13] == 0) - if((Block[14] & 0x7f) <= 9 && Block[15] <= 9) - return 1; + // Assume RFU means 0 :) + if(Block[10] == 0 && Block[11] == 0 && Block[12] == 0 && Block[13] == 0) + if((Block[14] & 0x7f) <= 9 && Block[15] <= 9) + return 1; - return 0; + return 0; } #define ALLOC 16 void ReadPCF7931() { - uint8_t Blocks[8][17]; - uint8_t tmpBlocks[4][16]; - int i, j, ind, ind2, n; - int num_blocks = 0; - int max_blocks = 8; - int ident = 0; - int error = 0; - int tries = 0; - - memset(Blocks, 0, 8*17*sizeof(uint8_t)); - - do { - memset(tmpBlocks, 0, 4*16*sizeof(uint8_t)); - n = DemodPCF7931((uint8_t**)tmpBlocks); - if(!n) - error++; - if(error==10 && num_blocks == 0) { - Dbprintf("Error, no tag or bad tag"); - return; - } - else if (tries==20 || error==10) { - Dbprintf("Error reading the tag"); - Dbprintf("Here is the partial content"); - goto end; - } - - for(i=0; i= 0; ind--,ind2--) { - if(ind2 < 0) - ind2 = max_blocks; - if(!Blocks[ind2][ALLOC]) { // Block ind2 not already found - // Dbprintf("Tmp %d -> Block %d", ind, ind2); - memcpy(Blocks[ind2], tmpBlocks[ind], 16); - Blocks[ind2][ALLOC] = 1; - num_blocks++; - if(num_blocks == max_blocks) goto end; - } - } - for(ind=i+1,ind2=j+1; ind < n; ind++,ind2++) { - if(ind2 > max_blocks) - ind2 = 0; - if(!Blocks[ind2][ALLOC]) { // Block ind2 not already found - // Dbprintf("Tmp %d -> Block %d", ind, ind2); - memcpy(Blocks[ind2], tmpBlocks[ind], 16); - Blocks[ind2][ALLOC] = 1; - num_blocks++; - if(num_blocks == max_blocks) goto end; - } - } - } - } - } - } - } - tries++; - if (BUTTON_PRESS()) return; - } while (num_blocks != max_blocks); + uint8_t Blocks[8][17]; + uint8_t tmpBlocks[4][16]; + int i, j, ind, ind2, n; + int num_blocks = 0; + int max_blocks = 8; + int ident = 0; + int error = 0; + int tries = 0; + + memset(Blocks, 0, 8*17*sizeof(uint8_t)); + + do { + memset(tmpBlocks, 0, 4*16*sizeof(uint8_t)); + n = DemodPCF7931((uint8_t**)tmpBlocks); + if(!n) + error++; + if(error==10 && num_blocks == 0) { + Dbprintf("Error, no tag or bad tag"); + return; + } + else if (tries==20 || error==10) { + Dbprintf("Error reading the tag"); + Dbprintf("Here is the partial content"); + goto end; + } + + for(i=0; i= 0; ind--,ind2--) { + if(ind2 < 0) + ind2 = max_blocks; + if(!Blocks[ind2][ALLOC]) { // Block ind2 not already found + // Dbprintf("Tmp %d -> Block %d", ind, ind2); + memcpy(Blocks[ind2], tmpBlocks[ind], 16); + Blocks[ind2][ALLOC] = 1; + num_blocks++; + if(num_blocks == max_blocks) goto end; + } + } + for(ind=i+1,ind2=j+1; ind < n; ind++,ind2++) { + if(ind2 > max_blocks) + ind2 = 0; + if(!Blocks[ind2][ALLOC]) { // Block ind2 not already found + // Dbprintf("Tmp %d -> Block %d", ind, ind2); + memcpy(Blocks[ind2], tmpBlocks[ind], 16); + Blocks[ind2][ALLOC] = 1; + num_blocks++; + if(num_blocks == max_blocks) goto end; + } + } + } + } + } + } + } + tries++; + if (BUTTON_PRESS()) return; + } while (num_blocks != max_blocks); end: - Dbprintf("-----------------------------------------"); - Dbprintf("Memory content:"); - Dbprintf("-----------------------------------------"); - for(i=0; i", i); - } - Dbprintf("-----------------------------------------"); - - return ; + Dbprintf("-----------------------------------------"); + Dbprintf("Memory content:"); + Dbprintf("-----------------------------------------"); + for(i=0; i", i); + } + Dbprintf("-----------------------------------------"); + + return ; } @@ -1661,20 +1653,20 @@ uint8_t * fwd_write_ptr; //forwardlink bit pointer //==================================================================== //-------------------------------------------------------------------- uint8_t Prepare_Cmd( uint8_t cmd ) { - //-------------------------------------------------------------------- + //-------------------------------------------------------------------- - *forward_ptr++ = 0; //start bit - *forward_ptr++ = 0; //second pause for 4050 code + *forward_ptr++ = 0; //start bit + *forward_ptr++ = 0; //second pause for 4050 code - *forward_ptr++ = cmd; - cmd >>= 1; - *forward_ptr++ = cmd; - cmd >>= 1; - *forward_ptr++ = cmd; - cmd >>= 1; - *forward_ptr++ = cmd; + *forward_ptr++ = cmd; + cmd >>= 1; + *forward_ptr++ = cmd; + cmd >>= 1; + *forward_ptr++ = cmd; + cmd >>= 1; + *forward_ptr++ = cmd; - return 6; //return number of emited bits + return 6; //return number of emited bits } //==================================================================== @@ -1684,21 +1676,21 @@ uint8_t Prepare_Cmd( uint8_t cmd ) { //-------------------------------------------------------------------- uint8_t Prepare_Addr( uint8_t addr ) { - //-------------------------------------------------------------------- + //-------------------------------------------------------------------- - register uint8_t line_parity; + register uint8_t line_parity; - uint8_t i; - line_parity = 0; - for(i=0;i<6;i++) { - *forward_ptr++ = addr; - line_parity ^= addr; - addr >>= 1; - } + uint8_t i; + line_parity = 0; + for(i=0;i<6;i++) { + *forward_ptr++ = addr; + line_parity ^= addr; + addr >>= 1; + } - *forward_ptr++ = (line_parity & 1); + *forward_ptr++ = (line_parity & 1); - return 7; //return number of emited bits + return 7; //return number of emited bits } //==================================================================== @@ -1708,36 +1700,36 @@ uint8_t Prepare_Addr( uint8_t addr ) { //-------------------------------------------------------------------- uint8_t Prepare_Data( uint16_t data_low, uint16_t data_hi) { - //-------------------------------------------------------------------- - - register uint8_t line_parity; - register uint8_t column_parity; - register uint8_t i, j; - register uint16_t data; - - data = data_low; - column_parity = 0; - - for(i=0; i<4; i++) { - line_parity = 0; - for(j=0; j<8; j++) { - line_parity ^= data; - column_parity ^= (data & 1) << j; - *forward_ptr++ = data; - data >>= 1; - } - *forward_ptr++ = line_parity; - if(i == 1) - data = data_hi; - } - - for(j=0; j<8; j++) { - *forward_ptr++ = column_parity; - column_parity >>= 1; - } - *forward_ptr = 0; - - return 45; //return number of emited bits + //-------------------------------------------------------------------- + + register uint8_t line_parity; + register uint8_t column_parity; + register uint8_t i, j; + register uint16_t data; + + data = data_low; + column_parity = 0; + + for(i=0; i<4; i++) { + line_parity = 0; + for(j=0; j<8; j++) { + line_parity ^= data; + column_parity ^= (data & 1) << j; + *forward_ptr++ = data; + data >>= 1; + } + *forward_ptr++ = line_parity; + if(i == 1) + data = data_hi; + } + + for(j=0; j<8; j++) { + *forward_ptr++ = column_parity; + column_parity >>= 1; + } + *forward_ptr = 0; + + return 45; //return number of emited bits } //==================================================================== @@ -1747,114 +1739,114 @@ uint8_t Prepare_Data( uint16_t data_low, uint16_t data_hi) { //==================================================================== void SendForward(uint8_t fwd_bit_count) { - fwd_write_ptr = forwardLink_data; - fwd_bit_sz = fwd_bit_count; - - LED_D_ON(); - - //Field on - FpgaDownloadAndGo(FPGA_BITSTREAM_LF); - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); - - // Give it a bit of time for the resonant antenna to settle. - // And for the tag to fully power up - SpinDelay(150); - - // force 1st mod pulse (start gap must be longer for 4305) - fwd_bit_sz--; //prepare next bit modulation - fwd_write_ptr++; - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off - SpinDelayUs(55*8); //55 cycles off (8us each)for 4305 - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);//field on - SpinDelayUs(16*8); //16 cycles on (8us each) - - // now start writting - while(fwd_bit_sz-- > 0) { //prepare next bit modulation - if(((*fwd_write_ptr++) & 1) == 1) - SpinDelayUs(32*8); //32 cycles at 125Khz (8us each) - else { - //These timings work for 4469/4269/4305 (with the 55*8 above) - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off - SpinDelayUs(23*8); //16-4 cycles off (8us each) - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);//field on - SpinDelayUs(9*8); //16 cycles on (8us each) - } - } + fwd_write_ptr = forwardLink_data; + fwd_bit_sz = fwd_bit_count; + + LED_D_ON(); + + //Field on + FpgaDownloadAndGo(FPGA_BITSTREAM_LF); + FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz + FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); + + // Give it a bit of time for the resonant antenna to settle. + // And for the tag to fully power up + SpinDelay(150); + + // force 1st mod pulse (start gap must be longer for 4305) + fwd_bit_sz--; //prepare next bit modulation + fwd_write_ptr++; + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off + SpinDelayUs(55*8); //55 cycles off (8us each)for 4305 + FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz + FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);//field on + SpinDelayUs(16*8); //16 cycles on (8us each) + + // now start writting + while(fwd_bit_sz-- > 0) { //prepare next bit modulation + if(((*fwd_write_ptr++) & 1) == 1) + SpinDelayUs(32*8); //32 cycles at 125Khz (8us each) + else { + //These timings work for 4469/4269/4305 (with the 55*8 above) + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off + SpinDelayUs(23*8); //16-4 cycles off (8us each) + FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz + FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);//field on + SpinDelayUs(9*8); //16 cycles on (8us each) + } + } } void EM4xLogin(uint32_t Password) { - uint8_t fwd_bit_count; + uint8_t fwd_bit_count; - forward_ptr = forwardLink_data; - fwd_bit_count = Prepare_Cmd( FWD_CMD_LOGIN ); - fwd_bit_count += Prepare_Data( Password&0xFFFF, Password>>16 ); + forward_ptr = forwardLink_data; + fwd_bit_count = Prepare_Cmd( FWD_CMD_LOGIN ); + fwd_bit_count += Prepare_Data( Password&0xFFFF, Password>>16 ); - SendForward(fwd_bit_count); + SendForward(fwd_bit_count); - //Wait for command to complete - SpinDelay(20); + //Wait for command to complete + SpinDelay(20); } void EM4xReadWord(uint8_t Address, uint32_t Pwd, uint8_t PwdMode) { - uint8_t fwd_bit_count; - uint8_t *dest = (uint8_t *)BigBuf; - int m=0, i=0; - - //If password mode do login - if (PwdMode == 1) EM4xLogin(Pwd); - - forward_ptr = forwardLink_data; - fwd_bit_count = Prepare_Cmd( FWD_CMD_READ ); - fwd_bit_count += Prepare_Addr( Address ); - - m = sizeof(BigBuf); - // Clear destination buffer before sending the command - memset(dest, 128, m); - // Connect the A/D to the peak-detected low-frequency path. - SetAdcMuxFor(GPIO_MUXSEL_LOPKD); - // Now set up the SSC to get the ADC samples that are now streaming at us. - FpgaSetupSsc(); - - SendForward(fwd_bit_count); - - // Now do the acquisition - i = 0; - for(;;) { - if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_TXRDY) { - AT91C_BASE_SSC->SSC_THR = 0x43; - } - if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_RXRDY) { - dest[i] = (uint8_t)AT91C_BASE_SSC->SSC_RHR; - i++; - if (i >= m) break; - } - } - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off - LED_D_OFF(); + uint8_t fwd_bit_count; + uint8_t *dest = (uint8_t *)BigBuf; + int m=0, i=0; + + //If password mode do login + if (PwdMode == 1) EM4xLogin(Pwd); + + forward_ptr = forwardLink_data; + fwd_bit_count = Prepare_Cmd( FWD_CMD_READ ); + fwd_bit_count += Prepare_Addr( Address ); + + m = sizeof(BigBuf); + // Clear destination buffer before sending the command + memset(dest, 128, m); + // Connect the A/D to the peak-detected low-frequency path. + SetAdcMuxFor(GPIO_MUXSEL_LOPKD); + // Now set up the SSC to get the ADC samples that are now streaming at us. + FpgaSetupSsc(); + + SendForward(fwd_bit_count); + + // Now do the acquisition + i = 0; + for(;;) { + if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_TXRDY) { + AT91C_BASE_SSC->SSC_THR = 0x43; + } + if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_RXRDY) { + dest[i] = (uint8_t)AT91C_BASE_SSC->SSC_RHR; + i++; + if (i >= m) break; + } + } + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off + LED_D_OFF(); } void EM4xWriteWord(uint32_t Data, uint8_t Address, uint32_t Pwd, uint8_t PwdMode) { - uint8_t fwd_bit_count; + uint8_t fwd_bit_count; - //If password mode do login - if (PwdMode == 1) EM4xLogin(Pwd); + //If password mode do login + if (PwdMode == 1) EM4xLogin(Pwd); - forward_ptr = forwardLink_data; - fwd_bit_count = Prepare_Cmd( FWD_CMD_WRITE ); - fwd_bit_count += Prepare_Addr( Address ); - fwd_bit_count += Prepare_Data( Data&0xFFFF, Data>>16 ); + forward_ptr = forwardLink_data; + fwd_bit_count = Prepare_Cmd( FWD_CMD_WRITE ); + fwd_bit_count += Prepare_Addr( Address ); + fwd_bit_count += Prepare_Data( Data&0xFFFF, Data>>16 ); - SendForward(fwd_bit_count); + SendForward(fwd_bit_count); - //Wait for write to complete - SpinDelay(20); - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off - LED_D_OFF(); + //Wait for write to complete + SpinDelay(20); + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off + LED_D_OFF(); } diff --git a/client/cmddata.c b/client/cmddata.c index 4b5cb040..bce5d2ce 100644 --- a/client/cmddata.c +++ b/client/cmddata.c @@ -27,82 +27,82 @@ static int CmdHelp(const char *Cmd); //set the demod buffer with given array of binary (one bit per byte) //by marshmellow -void setDemodBuf(uint8_t *buff,int size) +void setDemodBuf(uint8_t *buff,int size) { - int i=0; - for (; i < size; ++i){ - DemodBuffer[i]=buff[i]; - } - DemodBufferLen=size; - return; + int i=0; + for (; i < size; ++i){ + DemodBuffer[i]=buff[i]; + } + DemodBufferLen=size; + return; } //by marshmellow void printDemodBuff() { - uint32_t i = 0; - int bitLen = DemodBufferLen; - if (bitLen<16) { - PrintAndLog("no bits found in demod buffer"); - return; - } - if (bitLen>512) bitLen=512; //max output to 512 bits if we have more - should be plenty - for (i = 0; i <= (bitLen-16); i+=16) { - PrintAndLog("%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i", - DemodBuffer[i], - DemodBuffer[i+1], - DemodBuffer[i+2], - DemodBuffer[i+3], - DemodBuffer[i+4], - DemodBuffer[i+5], - DemodBuffer[i+6], - DemodBuffer[i+7], - DemodBuffer[i+8], - DemodBuffer[i+9], - DemodBuffer[i+10], - DemodBuffer[i+11], - DemodBuffer[i+12], - DemodBuffer[i+13], - DemodBuffer[i+14], - DemodBuffer[i+15]); - } - return; + uint32_t i = 0; + int bitLen = DemodBufferLen; + if (bitLen<16) { + PrintAndLog("no bits found in demod buffer"); + return; + } + if (bitLen>512) bitLen=512; //max output to 512 bits if we have more - should be plenty + for (i = 0; i <= (bitLen-16); i+=16) { + PrintAndLog("%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i", + DemodBuffer[i], + DemodBuffer[i+1], + DemodBuffer[i+2], + DemodBuffer[i+3], + DemodBuffer[i+4], + DemodBuffer[i+5], + DemodBuffer[i+6], + DemodBuffer[i+7], + DemodBuffer[i+8], + DemodBuffer[i+9], + DemodBuffer[i+10], + DemodBuffer[i+11], + DemodBuffer[i+12], + DemodBuffer[i+13], + DemodBuffer[i+14], + DemodBuffer[i+15]); + } + return; } int CmdAmp(const char *Cmd) { - int i, rising, falling; - int max = INT_MIN, min = INT_MAX; - - for (i = 10; i < GraphTraceLen; ++i) { - if (GraphBuffer[i] > max) - max = GraphBuffer[i]; - if (GraphBuffer[i] < min) - min = GraphBuffer[i]; - } - - if (max != min) { - rising = falling= 0; - for (i = 0; i < GraphTraceLen; ++i) { - if (GraphBuffer[i + 1] < GraphBuffer[i]) { - if (rising) { - GraphBuffer[i] = max; - rising = 0; - } - falling = 1; - } - if (GraphBuffer[i + 1] > GraphBuffer[i]) { - if (falling) { - GraphBuffer[i] = min; - falling = 0; - } - rising= 1; - } - } - } - RepaintGraphWindow(); - return 0; + int i, rising, falling; + int max = INT_MIN, min = INT_MAX; + + for (i = 10; i < GraphTraceLen; ++i) { + if (GraphBuffer[i] > max) + max = GraphBuffer[i]; + if (GraphBuffer[i] < min) + min = GraphBuffer[i]; + } + + if (max != min) { + rising = falling= 0; + for (i = 0; i < GraphTraceLen; ++i) { + if (GraphBuffer[i + 1] < GraphBuffer[i]) { + if (rising) { + GraphBuffer[i] = max; + rising = 0; + } + falling = 1; + } + if (GraphBuffer[i + 1] > GraphBuffer[i]) { + if (falling) { + GraphBuffer[i] = min; + falling = 0; + } + rising= 1; + } + } + } + RepaintGraphWindow(); + return 0; } /* @@ -119,171 +119,173 @@ int CmdAmp(const char *Cmd) //this method is dependant on all highs and lows to be the same(or clipped) this creates issues[marshmellow] it also ignores the clock int Cmdaskdemod(const char *Cmd) { - int i; - int c, high = 0, low = 0; - - // TODO: complain if we do not give 2 arguments here ! - // (AL - this doesn't make sense! we're only using one argument!!!) - sscanf(Cmd, "%i", &c); - - /* Detect high and lows and clock */ - // (AL - clock???) - for (i = 0; i < GraphTraceLen; ++i) - { - if (GraphBuffer[i] > high) - high = GraphBuffer[i]; - else if (GraphBuffer[i] < low) - low = GraphBuffer[i]; - } - high=abs(high*.75); - low=abs(low*.75); - if (c != 0 && c != 1) { - PrintAndLog("Invalid argument: %s", Cmd); - return 0; - } - //prime loop - if (GraphBuffer[0] > 0) { - GraphBuffer[0] = 1-c; - } else { - GraphBuffer[0] = c; - } - for (i = 1; i < GraphTraceLen; ++i) { - /* Transitions are detected at each peak - * Transitions are either: - * - we're low: transition if we hit a high - * - we're high: transition if we hit a low - * (we need to do it this way because some tags keep high or - * low for long periods, others just reach the peak and go - * down) - */ - //[marhsmellow] change == to >= for high and <= for low for fuzz - if ((GraphBuffer[i] == high) && (GraphBuffer[i - 1] == c)) { - GraphBuffer[i] = 1 - c; - } else if ((GraphBuffer[i] == low) && (GraphBuffer[i - 1] == (1 - c))){ - GraphBuffer[i] = c; - } else { - /* No transition */ - GraphBuffer[i] = GraphBuffer[i - 1]; - } - } - RepaintGraphWindow(); - return 0; + int i; + int c, high = 0, low = 0; + + // TODO: complain if we do not give 2 arguments here ! + // (AL - this doesn't make sense! we're only using one argument!!!) + sscanf(Cmd, "%i", &c); + + /* Detect high and lows and clock */ + // (AL - clock???) + for (i = 0; i < GraphTraceLen; ++i) + { + if (GraphBuffer[i] > high) + high = GraphBuffer[i]; + else if (GraphBuffer[i] < low) + low = GraphBuffer[i]; + } + high=abs(high*.75); + low=abs(low*.75); + if (c != 0 && c != 1) { + PrintAndLog("Invalid argument: %s", Cmd); + return 0; + } + //prime loop + if (GraphBuffer[0] > 0) { + GraphBuffer[0] = 1-c; + } else { + GraphBuffer[0] = c; + } + for (i = 1; i < GraphTraceLen; ++i) { + /* Transitions are detected at each peak + * Transitions are either: + * - we're low: transition if we hit a high + * - we're high: transition if we hit a low + * (we need to do it this way because some tags keep high or + * low for long periods, others just reach the peak and go + * down) + */ + //[marhsmellow] change == to >= for high and <= for low for fuzz + if ((GraphBuffer[i] == high) && (GraphBuffer[i - 1] == c)) { + GraphBuffer[i] = 1 - c; + } else if ((GraphBuffer[i] == low) && (GraphBuffer[i - 1] == (1 - c))){ + GraphBuffer[i] = c; + } else { + /* No transition */ + GraphBuffer[i] = GraphBuffer[i - 1]; + } + } + RepaintGraphWindow(); + return 0; } //by marshmellow void printBitStream(uint8_t BitStream[], uint32_t bitLen) { - uint32_t i = 0; - if (bitLen<16) { - PrintAndLog("Too few bits found: %d",bitLen); - return; - } - if (bitLen>512) bitLen=512; - for (i = 0; i <= (bitLen-16); i+=16) { - PrintAndLog("%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i", - BitStream[i], - BitStream[i+1], - BitStream[i+2], - BitStream[i+3], - BitStream[i+4], - BitStream[i+5], - BitStream[i+6], - BitStream[i+7], - BitStream[i+8], - BitStream[i+9], - BitStream[i+10], - BitStream[i+11], - BitStream[i+12], - BitStream[i+13], - BitStream[i+14], - BitStream[i+15]); - } - return; + uint32_t i = 0; + if (bitLen<16) { + PrintAndLog("Too few bits found: %d",bitLen); + return; + } + if (bitLen>512) bitLen=512; + for (i = 0; i <= (bitLen-16); i+=16) { + PrintAndLog("%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i", + BitStream[i], + BitStream[i+1], + BitStream[i+2], + BitStream[i+3], + BitStream[i+4], + BitStream[i+5], + BitStream[i+6], + BitStream[i+7], + BitStream[i+8], + BitStream[i+9], + BitStream[i+10], + BitStream[i+11], + BitStream[i+12], + BitStream[i+13], + BitStream[i+14], + BitStream[i+15]); + } + return; } //by marshmellow +//print EM410x ID in multiple formats void printEM410x(uint64_t id) { - if (id !=0){ - uint64_t iii=1; - uint64_t id2lo=0; //id2hi=0, - uint32_t ii=0; - uint32_t i=0; - for (ii=5; ii>0;ii--){ - for (i=0;i<8;i++){ - id2lo=(id2lo<<1LL)|((id & (iii<<(i+((ii-1)*8))))>>(i+((ii-1)*8))); - } - } - //output em id - PrintAndLog("EM TAG ID : %010llx", id); - PrintAndLog("Unique TAG ID: %010llx", id2lo); //id2hi, - PrintAndLog("DEZ 8 : %08lld",id & 0xFFFFFF); - PrintAndLog("DEZ 10 : %010lld",id & 0xFFFFFF); - PrintAndLog("DEZ 5.5 : %05lld.%05lld",(id>>16LL) & 0xFFFF,(id & 0xFFFF)); - PrintAndLog("DEZ 3.5A : %03lld.%05lld",(id>>32ll),(id & 0xFFFF)); - PrintAndLog("DEZ 14/IK2 : %014lld",id); - PrintAndLog("DEZ 15/IK3 : %015lld",id2lo); - PrintAndLog("Other : %05lld_%03lld_%08lld",(id&0xFFFF),((id>>16LL) & 0xFF),(id & 0xFFFFFF)); - } - return; + if (id !=0){ + uint64_t iii=1; + uint64_t id2lo=0; //id2hi=0, + uint32_t ii=0; + uint32_t i=0; + for (ii=5; ii>0;ii--){ + for (i=0;i<8;i++){ + id2lo=(id2lo<<1LL) | ((id & (iii << (i+((ii-1)*8)))) >> (i+((ii-1)*8))); + } + } + //output em id + PrintAndLog("EM TAG ID : %010llx", id); + PrintAndLog("Unique TAG ID: %010llx", id2lo); //id2hi, + PrintAndLog("DEZ 8 : %08lld",id & 0xFFFFFF); + PrintAndLog("DEZ 10 : %010lld",id & 0xFFFFFF); + PrintAndLog("DEZ 5.5 : %05lld.%05lld",(id>>16LL) & 0xFFFF,(id & 0xFFFF)); + PrintAndLog("DEZ 3.5A : %03lld.%05lld",(id>>32ll),(id & 0xFFFF)); + PrintAndLog("DEZ 14/IK2 : %014lld",id); + PrintAndLog("DEZ 15/IK3 : %015lld",id2lo); + PrintAndLog("Other : %05lld_%03lld_%08lld",(id&0xFFFF),((id>>16LL) & 0xFF),(id & 0xFFFFFF)); + } + return; } //by marshmellow +//take binary from demod buffer and see if we can find an EM410x ID int CmdEm410xDecode(const char *Cmd) { - uint64_t id=0; + uint64_t id=0; // uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; // uint32_t i=0; // i=getFromGraphBuf(BitStream); - id = Em410xDecode(DemodBuffer,DemodBufferLen); - printEM410x(id); - if (id>0) return 1; - return 0; + id = Em410xDecode(DemodBuffer,DemodBufferLen); + printEM410x(id); + if (id>0) return 1; + return 0; } //by marshmellow //takes 2 arguments - clock and invert both as integers -//attempts to demodulate ask while decoding manchester +//attempts to demodulate ask while decoding manchester //prints binary found and saves in graphbuffer for further commands int Cmdaskmandemod(const char *Cmd) { - int invert=0; - int clk=0; - uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; - sscanf(Cmd, "%i %i", &clk, &invert); - if (invert != 0 && invert != 1) { - PrintAndLog("Invalid argument: %s", Cmd); - return 0; - } - - int BitLen = getFromGraphBuf(BitStream); - // PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen); - int errCnt=0; - errCnt = askmandemod(BitStream, &BitLen,&clk,&invert); - if (errCnt<0||BitLen<16){ //if fatal error (or -1) - // PrintAndLog("no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk); - return 0; - } - PrintAndLog("\nUsing Clock: %d - Invert: %d - Bits Found: %d",clk,invert,BitLen); - - //output - if (errCnt>0){ - PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt); - } - PrintAndLog("ASK/Manchester decoded bitstream:"); - // Now output the bitstream to the scrollback by line of 16 bits - setDemodBuf(BitStream,BitLen); - printDemodBuff(); - uint64_t lo =0; - lo = Em410xDecode(BitStream,BitLen); - if (lo>0){ - //set GraphBuffer for clone or sim command - PrintAndLog("EM410x pattern found: "); - printEM410x(lo); - return 1; - } - //if (BitLen>16) return 1; - return 0; + int invert=0; + int clk=0; + uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; + sscanf(Cmd, "%i %i", &clk, &invert); + if (invert != 0 && invert != 1) { + PrintAndLog("Invalid argument: %s", Cmd); + return 0; + } + + size_t BitLen = getFromGraphBuf(BitStream); + // PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen); + int errCnt=0; + errCnt = askmandemod(BitStream, &BitLen,&clk,&invert); + if (errCnt<0||BitLen<16){ //if fatal error (or -1) + // PrintAndLog("no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk); + return 0; + } + PrintAndLog("\nUsing Clock: %d - Invert: %d - Bits Found: %d",clk,invert,BitLen); + + //output + if (errCnt>0){ + PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt); + } + PrintAndLog("ASK/Manchester decoded bitstream:"); + // Now output the bitstream to the scrollback by line of 16 bits + setDemodBuf(BitStream,BitLen); + printDemodBuff(); + uint64_t lo =0; + lo = Em410xDecode(BitStream,BitLen); + if (lo>0){ + //set GraphBuffer for clone or sim command + PrintAndLog("EM410x pattern found: "); + printEM410x(lo); + return 1; + } + //if (BitLen>16) return 1; + return 0; } //by marshmellow @@ -291,75 +293,75 @@ int Cmdaskmandemod(const char *Cmd) //stricktly take 10 and 01 and convert to 0 and 1 int Cmdmandecoderaw(const char *Cmd) { - int i =0; - int errCnt=0; - int bitnum=0; - uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; - int high=0,low=0; - for (;ihigh) high=DemodBuffer[i]; - else if(DemodBuffer[i]1 || low <0 ){ - PrintAndLog("Error: please raw demod the wave first then mancheseter raw decode"); - return 0; - } - bitnum=i; - errCnt=manrawdecode(BitStream,&bitnum); - if (errCnt>=20){ - PrintAndLog("Too many errors: %d",errCnt); - return 0; - } - PrintAndLog("Manchester Decoded - # errors:%d - data:",errCnt); - printBitStream(BitStream,bitnum); - if (errCnt==0){ - uint64_t id = 0; - id = Em410xDecode(BitStream,bitnum); - if (id>0) setDemodBuf(BitStream,bitnum); - printEM410x(id); - } - return 1; + int i =0; + int errCnt=0; + size_t size=0; + uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; + int high=0,low=0; + for (;ihigh) high=DemodBuffer[i]; + else if(DemodBuffer[i]1 || low <0 ){ + PrintAndLog("Error: please raw demod the wave first then mancheseter raw decode"); + return 0; + } + size=i; + errCnt=manrawdecode(BitStream, &size); + if (errCnt>=20){ + PrintAndLog("Too many errors: %d",errCnt); + return 0; + } + PrintAndLog("Manchester Decoded - # errors:%d - data:",errCnt); + printBitStream(BitStream, size); + if (errCnt==0){ + uint64_t id = 0; + id = Em410xDecode(BitStream, size); + if (id>0) setDemodBuf(BitStream, size); + printEM410x(id); + } + return 1; } //by marshmellow //biphase decode //take 01 or 10 = 0 and 11 or 00 = 1 //takes 1 argument "offset" default = 0 if 1 it will shift the decode by one bit -// since it is not like manchester and doesn't have an incorrect bit pattern we +// since it is not like manchester and doesn't have an incorrect bit pattern we // cannot determine if our decode is correct or if it should be shifted by one bit // the argument offset allows us to manually shift if the output is incorrect // (better would be to demod and decode at the same time so we can distinguish large // width waves vs small width waves to help the decode positioning) or askbiphdemod int CmdBiphaseDecodeRaw(const char *Cmd) { - int i = 0; - int errCnt=0; - int bitnum=0; - int offset=0; - int high=0, low=0; - sscanf(Cmd, "%i", &offset); - uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; - //get graphbuffer & high and low - for (;ihigh)high=DemodBuffer[i]; - else if(DemodBuffer[i]1 || low <0){ - PrintAndLog("Error: please raw demod the wave first then decode"); - return 0; - } - bitnum=i; - errCnt=BiphaseRawDecode(BitStream,&bitnum, offset); - if (errCnt>=20){ - PrintAndLog("Too many errors attempting to decode: %d",errCnt); - return 0; - } - PrintAndLog("Biphase Decoded using offset: %d - # errors:%d - data:",offset,errCnt); - printBitStream(BitStream,bitnum); - PrintAndLog("\nif bitstream does not look right try offset=1"); - return 1; + int i = 0; + int errCnt=0; + size_t size=0; + int offset=0; + int high=0, low=0; + sscanf(Cmd, "%i", &offset); + uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; + //get graphbuffer & high and low + for (;ihigh)high=DemodBuffer[i]; + else if(DemodBuffer[i]1 || low <0){ + PrintAndLog("Error: please raw demod the wave first then decode"); + return 0; + } + size=i; + errCnt=BiphaseRawDecode(BitStream, &size, offset); + if (errCnt>=20){ + PrintAndLog("Too many errors attempting to decode: %d",errCnt); + return 0; + } + PrintAndLog("Biphase Decoded using offset: %d - # errors:%d - data:",offset,errCnt); + printBitStream(BitStream, size); + PrintAndLog("\nif bitstream does not look right try offset=1"); + return 1; } @@ -369,89 +371,89 @@ int CmdBiphaseDecodeRaw(const char *Cmd) //prints binary found and saves in graphbuffer for further commands int Cmdaskrawdemod(const char *Cmd) { - int invert=0; - int clk=0; - uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; - sscanf(Cmd, "%i %i", &clk, &invert); - if (invert != 0 && invert != 1) { - PrintAndLog("Invalid argument: %s", Cmd); - return 0; - } - int BitLen = getFromGraphBuf(BitStream); - int errCnt=0; - errCnt = askrawdemod(BitStream, &BitLen,&clk,&invert); - if (errCnt==-1||BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first) - PrintAndLog("no data found"); - return 0; - } - PrintAndLog("Using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen); - //PrintAndLog("Data start pos:%d, lastBit:%d, stop pos:%d, numBits:%d",iii,lastBit,i,bitnum); - //move BitStream back to DemodBuffer - setDemodBuf(BitStream,BitLen); - - //output - if (errCnt>0){ - PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt); - } - PrintAndLog("ASK demoded bitstream:"); - // Now output the bitstream to the scrollback by line of 16 bits - printBitStream(BitStream,BitLen); - - return 1; + int invert=0; + int clk=0; + uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; + sscanf(Cmd, "%i %i", &clk, &invert); + if (invert != 0 && invert != 1) { + PrintAndLog("Invalid argument: %s", Cmd); + return 0; + } + size_t BitLen = getFromGraphBuf(BitStream); + int errCnt=0; + errCnt = askrawdemod(BitStream, &BitLen,&clk,&invert); + if (errCnt==-1||BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first) + PrintAndLog("no data found"); + return 0; + } + PrintAndLog("Using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen); + //PrintAndLog("Data start pos:%d, lastBit:%d, stop pos:%d, numBits:%d",iii,lastBit,i,bitnum); + //move BitStream back to DemodBuffer + setDemodBuf(BitStream,BitLen); + + //output + if (errCnt>0){ + PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt); + } + PrintAndLog("ASK demoded bitstream:"); + // Now output the bitstream to the scrollback by line of 16 bits + printBitStream(BitStream,BitLen); + + return 1; } int CmdAutoCorr(const char *Cmd) { - static int CorrelBuffer[MAX_GRAPH_TRACE_LEN]; - - int window = atoi(Cmd); - - if (window == 0) { - PrintAndLog("needs a window"); - return 0; - } - if (window >= GraphTraceLen) { - PrintAndLog("window must be smaller than trace (%d samples)", - GraphTraceLen); - return 0; - } - - PrintAndLog("performing %d correlations", GraphTraceLen - window); - - for (int i = 0; i < GraphTraceLen - window; ++i) { - int sum = 0; - for (int j = 0; j < window; ++j) { - sum += (GraphBuffer[j]*GraphBuffer[i + j]) / 256; - } - CorrelBuffer[i] = sum; - } - GraphTraceLen = GraphTraceLen - window; - memcpy(GraphBuffer, CorrelBuffer, GraphTraceLen * sizeof (int)); - - RepaintGraphWindow(); - return 0; + static int CorrelBuffer[MAX_GRAPH_TRACE_LEN]; + + int window = atoi(Cmd); + + if (window == 0) { + PrintAndLog("needs a window"); + return 0; + } + if (window >= GraphTraceLen) { + PrintAndLog("window must be smaller than trace (%d samples)", + GraphTraceLen); + return 0; + } + + PrintAndLog("performing %d correlations", GraphTraceLen - window); + + for (int i = 0; i < GraphTraceLen - window; ++i) { + int sum = 0; + for (int j = 0; j < window; ++j) { + sum += (GraphBuffer[j]*GraphBuffer[i + j]) / 256; + } + CorrelBuffer[i] = sum; + } + GraphTraceLen = GraphTraceLen - window; + memcpy(GraphBuffer, CorrelBuffer, GraphTraceLen * sizeof (int)); + + RepaintGraphWindow(); + return 0; } int CmdBitsamples(const char *Cmd) { - int cnt = 0; - uint8_t got[12288]; - - GetFromBigBuf(got,sizeof(got),0); - WaitForResponse(CMD_ACK,NULL); - - for (int j = 0; j < sizeof(got); j++) { - for (int k = 0; k < 8; k++) { - if(got[j] & (1 << (7 - k))) { - GraphBuffer[cnt++] = 1; - } else { - GraphBuffer[cnt++] = 0; - } - } - } - GraphTraceLen = cnt; - RepaintGraphWindow(); - return 0; + int cnt = 0; + uint8_t got[12288]; + + GetFromBigBuf(got,sizeof(got),0); + WaitForResponse(CMD_ACK,NULL); + + for (int j = 0; j < sizeof(got); j++) { + for (int k = 0; k < 8; k++) { + if(got[j] & (1 << (7 - k))) { + GraphBuffer[cnt++] = 1; + } else { + GraphBuffer[cnt++] = 0; + } + } + } + GraphTraceLen = cnt; + RepaintGraphWindow(); + return 0; } /* @@ -459,92 +461,92 @@ int CmdBitsamples(const char *Cmd) */ int CmdBitstream(const char *Cmd) { - int i, j; - int bit; - int gtl; - int clock; - int low = 0; - int high = 0; - int hithigh, hitlow, first; - - /* Detect high and lows and clock */ - for (i = 0; i < GraphTraceLen; ++i) - { - if (GraphBuffer[i] > high) - high = GraphBuffer[i]; - else if (GraphBuffer[i] < low) - low = GraphBuffer[i]; - } - - /* Get our clock */ - clock = GetClock(Cmd, high, 1); - gtl = ClearGraph(0); - - bit = 0; - for (i = 0; i < (int)(gtl / clock); ++i) - { - hithigh = 0; - hitlow = 0; - first = 1; - /* Find out if we hit both high and low peaks */ - for (j = 0; j < clock; ++j) - { - if (GraphBuffer[(i * clock) + j] == high) - hithigh = 1; - else if (GraphBuffer[(i * clock) + j] == low) - hitlow = 1; - /* it doesn't count if it's the first part of our read - because it's really just trailing from the last sequence */ - if (first && (hithigh || hitlow)) - hithigh = hitlow = 0; - else - first = 0; - - if (hithigh && hitlow) - break; - } - - /* If we didn't hit both high and low peaks, we had a bit transition */ - if (!hithigh || !hitlow) - bit ^= 1; - - AppendGraph(0, clock, bit); - // for (j = 0; j < (int)(clock/2); j++) - // GraphBuffer[(i * clock) + j] = bit ^ 1; - // for (j = (int)(clock/2); j < clock; j++) - // GraphBuffer[(i * clock) + j] = bit; - } - - RepaintGraphWindow(); - return 0; + int i, j; + int bit; + int gtl; + int clock; + int low = 0; + int high = 0; + int hithigh, hitlow, first; + + /* Detect high and lows and clock */ + for (i = 0; i < GraphTraceLen; ++i) + { + if (GraphBuffer[i] > high) + high = GraphBuffer[i]; + else if (GraphBuffer[i] < low) + low = GraphBuffer[i]; + } + + /* Get our clock */ + clock = GetClock(Cmd, high, 1); + gtl = ClearGraph(0); + + bit = 0; + for (i = 0; i < (int)(gtl / clock); ++i) + { + hithigh = 0; + hitlow = 0; + first = 1; + /* Find out if we hit both high and low peaks */ + for (j = 0; j < clock; ++j) + { + if (GraphBuffer[(i * clock) + j] == high) + hithigh = 1; + else if (GraphBuffer[(i * clock) + j] == low) + hitlow = 1; + /* it doesn't count if it's the first part of our read + because it's really just trailing from the last sequence */ + if (first && (hithigh || hitlow)) + hithigh = hitlow = 0; + else + first = 0; + + if (hithigh && hitlow) + break; + } + + /* If we didn't hit both high and low peaks, we had a bit transition */ + if (!hithigh || !hitlow) + bit ^= 1; + + AppendGraph(0, clock, bit); + // for (j = 0; j < (int)(clock/2); j++) + // GraphBuffer[(i * clock) + j] = bit ^ 1; + // for (j = (int)(clock/2); j < clock; j++) + // GraphBuffer[(i * clock) + j] = bit; + } + + RepaintGraphWindow(); + return 0; } int CmdBuffClear(const char *Cmd) { - UsbCommand c = {CMD_BUFF_CLEAR}; - SendCommand(&c); - ClearGraph(true); - return 0; + UsbCommand c = {CMD_BUFF_CLEAR}; + SendCommand(&c); + ClearGraph(true); + return 0; } int CmdDec(const char *Cmd) { - for (int i = 0; i < (GraphTraceLen / 2); ++i) - GraphBuffer[i] = GraphBuffer[i * 2]; - GraphTraceLen /= 2; - PrintAndLog("decimated by 2"); - RepaintGraphWindow(); - return 0; + for (int i = 0; i < (GraphTraceLen / 2); ++i) + GraphBuffer[i] = GraphBuffer[i * 2]; + GraphTraceLen /= 2; + PrintAndLog("decimated by 2"); + RepaintGraphWindow(); + return 0; } /* Print our clock rate */ -// uses data from graphbuffer +// uses data from graphbuffer int CmdDetectClockRate(const char *Cmd) { - GetClock("",0,0); - //int clock = DetectASKClock(0); - //PrintAndLog("Auto-detected clock rate: %d", clock); - return 0; + GetClock("",0,0); + //int clock = DetectASKClock(0); + //PrintAndLog("Auto-detected clock rate: %d", clock); + return 0; } //by marshmellow @@ -553,37 +555,37 @@ int CmdDetectClockRate(const char *Cmd) //defaults: clock = 50, invert=0, rchigh=10, rclow=8 (RF/10 RF/8 (fsk2a)) int CmdFSKrawdemod(const char *Cmd) { - //raw fsk demod no manchester decoding no start bit finding just get binary from wave - //set defaults - int rfLen = 50; - int invert=0; - int fchigh=10; - int fclow=8; - //set options from parameters entered with the command - sscanf(Cmd, "%i %i %i %i", &rfLen, &invert, &fchigh, &fclow); - - if (strlen(Cmd)>0 && strlen(Cmd)<=2) { - //rfLen=param_get8(Cmd, 0); //if rfLen option only is used - if (rfLen==1){ - invert=1; //if invert option only is used - rfLen = 50; - } else if(rfLen==0) rfLen=50; - } - PrintAndLog("Args invert: %d - Clock:%d - fchigh:%d - fclow: %d",invert,rfLen,fchigh, fclow); - uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; - uint32_t BitLen = getFromGraphBuf(BitStream); - int size = fskdemod(BitStream,BitLen,(uint8_t)rfLen,(uint8_t)invert,(uint8_t)fchigh,(uint8_t)fclow); - if (size>0){ - PrintAndLog("FSK decoded bitstream:"); - setDemodBuf(BitStream,size); - - // Now output the bitstream to the scrollback by line of 16 bits - if(size > (8*32)+2) size = (8*32)+2; //only output a max of 8 blocks of 32 bits most tags will have full bit stream inside that sample size - printBitStream(BitStream,size); - } else{ - PrintAndLog("no FSK data found"); - } - return 0; + //raw fsk demod no manchester decoding no start bit finding just get binary from wave + //set defaults + int rfLen = 50; + int invert=0; + int fchigh=10; + int fclow=8; + //set options from parameters entered with the command + sscanf(Cmd, "%i %i %i %i", &rfLen, &invert, &fchigh, &fclow); + + if (strlen(Cmd)>0 && strlen(Cmd)<=2) { + //rfLen=param_get8(Cmd, 0); //if rfLen option only is used + if (rfLen==1){ + invert=1; //if invert option only is used + rfLen = 50; + } else if(rfLen==0) rfLen=50; + } + PrintAndLog("Args invert: %d - Clock:%d - fchigh:%d - fclow: %d",invert,rfLen,fchigh, fclow); + uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; + size_t BitLen = getFromGraphBuf(BitStream); + int size = fskdemod(BitStream,BitLen,(uint8_t)rfLen,(uint8_t)invert,(uint8_t)fchigh,(uint8_t)fclow); + if (size>0){ + PrintAndLog("FSK decoded bitstream:"); + setDemodBuf(BitStream,size); + + // Now output the bitstream to the scrollback by line of 16 bits + if(size > (8*32)+2) size = (8*32)+2; //only output a max of 8 blocks of 32 bits most tags will have full bit stream inside that sample size + printBitStream(BitStream,size); + } else{ + PrintAndLog("no FSK data found"); + } + return 0; } //by marshmellow (based on existing demod + holiman's refactor) @@ -591,73 +593,73 @@ int CmdFSKrawdemod(const char *Cmd) //print full HID Prox ID and some bit format details if found int CmdFSKdemodHID(const char *Cmd) { - //raw fsk demod no manchester decoding no start bit finding just get binary from wave - uint32_t hi2=0, hi=0, lo=0; - - uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; - uint32_t BitLen = getFromGraphBuf(BitStream); - //get binary from fsk wave - size_t size = HIDdemodFSK(BitStream,BitLen,&hi2,&hi,&lo); - if (size<0){ - PrintAndLog("Error demoding fsk"); - return 0; - } - if (hi2==0 && hi==0 && lo==0) return 0; - if (hi2 != 0){ //extra large HID tags - PrintAndLog("HID Prox TAG ID: %x%08x%08x (%d)", - (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF); - setDemodBuf(BitStream,BitLen); - return 1; - } - else { //standard HID tags <38 bits - //Dbprintf("TAG ID: %x%08x (%d)",(unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF); //old print cmd - uint8_t fmtLen = 0; - uint32_t fc = 0; - uint32_t cardnum = 0; - if (((hi>>5)&1)==1){//if bit 38 is set then < 37 bit format is used - uint32_t lo2=0; - lo2=(((hi & 15) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit - uint8_t idx3 = 1; - while(lo2>1){ //find last bit set to 1 (format len bit) - lo2=lo2>>1; - idx3++; - } - fmtLen =idx3+19; - fc =0; - cardnum=0; - if(fmtLen==26){ - cardnum = (lo>>1)&0xFFFF; - fc = (lo>>17)&0xFF; - } - if(fmtLen==37){ - cardnum = (lo>>1)&0x7FFFF; - fc = ((hi&0xF)<<12)|(lo>>20); - } - if(fmtLen==34){ - cardnum = (lo>>1)&0xFFFF; - fc= ((hi&1)<<15)|(lo>>17); - } - if(fmtLen==35){ - cardnum = (lo>>1)&0xFFFFF; - fc = ((hi&1)<<11)|(lo>>21); - } - } - else { //if bit 38 is not set then 37 bit format is used - fmtLen= 37; - fc =0; - cardnum=0; - if(fmtLen==37){ - cardnum = (lo>>1)&0x7FFFF; - fc = ((hi&0xF)<<12)|(lo>>20); - } - } - PrintAndLog("HID Prox TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d", - (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF, - (unsigned int) fmtLen, (unsigned int) fc, (unsigned int) cardnum); - setDemodBuf(BitStream,BitLen); - return 1; - } - return 0; + //raw fsk demod no manchester decoding no start bit finding just get binary from wave + uint32_t hi2=0, hi=0, lo=0; + + uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; + size_t BitLen = getFromGraphBuf(BitStream); + //get binary from fsk wave + size_t size = HIDdemodFSK(BitStream,BitLen,&hi2,&hi,&lo); + if (size<0){ + PrintAndLog("Error demoding fsk"); + return 0; + } + if (hi2==0 && hi==0 && lo==0) return 0; + if (hi2 != 0){ //extra large HID tags + PrintAndLog("HID Prox TAG ID: %x%08x%08x (%d)", + (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF); + setDemodBuf(BitStream,BitLen); + return 1; + } + else { //standard HID tags <38 bits + //Dbprintf("TAG ID: %x%08x (%d)",(unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF); //old print cmd + uint8_t fmtLen = 0; + uint32_t fc = 0; + uint32_t cardnum = 0; + if (((hi>>5)&1)==1){//if bit 38 is set then < 37 bit format is used + uint32_t lo2=0; + lo2=(((hi & 15) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit + uint8_t idx3 = 1; + while(lo2>1){ //find last bit set to 1 (format len bit) + lo2=lo2>>1; + idx3++; + } + fmtLen =idx3+19; + fc =0; + cardnum=0; + if(fmtLen==26){ + cardnum = (lo>>1)&0xFFFF; + fc = (lo>>17)&0xFF; + } + if(fmtLen==37){ + cardnum = (lo>>1)&0x7FFFF; + fc = ((hi&0xF)<<12)|(lo>>20); + } + if(fmtLen==34){ + cardnum = (lo>>1)&0xFFFF; + fc= ((hi&1)<<15)|(lo>>17); + } + if(fmtLen==35){ + cardnum = (lo>>1)&0xFFFFF; + fc = ((hi&1)<<11)|(lo>>21); + } + } + else { //if bit 38 is not set then 37 bit format is used + fmtLen= 37; + fc =0; + cardnum=0; + if(fmtLen==37){ + cardnum = (lo>>1)&0x7FFFF; + fc = ((hi&0xF)<<12)|(lo>>20); + } + } + PrintAndLog("HID Prox TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d", + (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF, + (unsigned int) fmtLen, (unsigned int) fc, (unsigned int) cardnum); + setDemodBuf(BitStream,BitLen); + return 1; + } + return 0; } //by marshmellow @@ -665,203 +667,203 @@ int CmdFSKdemodHID(const char *Cmd) //print ioprox ID and some format details int CmdFSKdemodIO(const char *Cmd) { - //raw fsk demod no manchester decoding no start bit finding just get binary from wave - //set defaults - int idx=0; - //something in graphbuffer - if (GraphTraceLen < 65) return 0; - uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; - uint32_t BitLen = getFromGraphBuf(BitStream); - //get binary from fsk wave - // PrintAndLog("DEBUG: got buff"); - idx = IOdemodFSK(BitStream,BitLen); - if (idx<0){ - //PrintAndLog("Error demoding fsk"); - return 0; - } - // PrintAndLog("DEBUG: Got IOdemodFSK"); - if (idx==0){ - //PrintAndLog("IO Prox Data not found - FSK Data:"); - //if (BitLen > 92) printBitStream(BitStream,92); - return 0; - } - //Index map - //0 10 20 30 40 50 60 - //| | | | | | | - //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23 - //----------------------------------------------------------------------------- - //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11 - // - //XSF(version)facility:codeone+codetwo (raw) - //Handle the data - if (idx+64>BitLen) return 0; - PrintAndLog("%d%d%d%d%d%d%d%d %d",BitStream[idx], BitStream[idx+1], BitStream[idx+2], BitStream[idx+3], BitStream[idx+4], BitStream[idx+5], BitStream[idx+6], BitStream[idx+7], BitStream[idx+8]); - PrintAndLog("%d%d%d%d%d%d%d%d %d",BitStream[idx+9], BitStream[idx+10], BitStream[idx+11],BitStream[idx+12],BitStream[idx+13],BitStream[idx+14],BitStream[idx+15],BitStream[idx+16],BitStream[idx+17]); - PrintAndLog("%d%d%d%d%d%d%d%d %d facility",BitStream[idx+18], BitStream[idx+19], BitStream[idx+20],BitStream[idx+21],BitStream[idx+22],BitStream[idx+23],BitStream[idx+24],BitStream[idx+25],BitStream[idx+26]); - PrintAndLog("%d%d%d%d%d%d%d%d %d version",BitStream[idx+27], BitStream[idx+28], BitStream[idx+29],BitStream[idx+30],BitStream[idx+31],BitStream[idx+32],BitStream[idx+33],BitStream[idx+34],BitStream[idx+35]); - PrintAndLog("%d%d%d%d%d%d%d%d %d code1",BitStream[idx+36], BitStream[idx+37], BitStream[idx+38],BitStream[idx+39],BitStream[idx+40],BitStream[idx+41],BitStream[idx+42],BitStream[idx+43],BitStream[idx+44]); - PrintAndLog("%d%d%d%d%d%d%d%d %d code2",BitStream[idx+45], BitStream[idx+46], BitStream[idx+47],BitStream[idx+48],BitStream[idx+49],BitStream[idx+50],BitStream[idx+51],BitStream[idx+52],BitStream[idx+53]); - PrintAndLog("%d%d%d%d%d%d%d%d %d%d checksum",BitStream[idx+54],BitStream[idx+55],BitStream[idx+56],BitStream[idx+57],BitStream[idx+58],BitStream[idx+59],BitStream[idx+60],BitStream[idx+61],BitStream[idx+62],BitStream[idx+63]); - - uint32_t code = bytebits_to_byte(BitStream+idx,32); - uint32_t code2 = bytebits_to_byte(BitStream+idx+32,32); - uint8_t version = bytebits_to_byte(BitStream+idx+27,8); //14,4 - uint8_t facilitycode = bytebits_to_byte(BitStream+idx+18,8) ; - uint16_t number = (bytebits_to_byte(BitStream+idx+36,8)<<8)|(bytebits_to_byte(BitStream+idx+45,8)); //36,9 - PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x)",version,facilitycode,number,code,code2); - int i; - for (i=0;i<64;++i) - DemodBuffer[i]=BitStream[idx++]; - - DemodBufferLen=64; - return 1; + //raw fsk demod no manchester decoding no start bit finding just get binary from wave + //set defaults + int idx=0; + //something in graphbuffer + if (GraphTraceLen < 65) return 0; + uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; + size_t BitLen = getFromGraphBuf(BitStream); + //get binary from fsk wave + // PrintAndLog("DEBUG: got buff"); + idx = IOdemodFSK(BitStream,BitLen); + if (idx<0){ + //PrintAndLog("Error demoding fsk"); + return 0; + } + // PrintAndLog("DEBUG: Got IOdemodFSK"); + if (idx==0){ + //PrintAndLog("IO Prox Data not found - FSK Data:"); + //if (BitLen > 92) printBitStream(BitStream,92); + return 0; + } + //Index map + //0 10 20 30 40 50 60 + //| | | | | | | + //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23 + //----------------------------------------------------------------------------- + //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11 + // + //XSF(version)facility:codeone+codetwo (raw) + //Handle the data + if (idx+64>BitLen) return 0; + PrintAndLog("%d%d%d%d%d%d%d%d %d",BitStream[idx], BitStream[idx+1], BitStream[idx+2], BitStream[idx+3], BitStream[idx+4], BitStream[idx+5], BitStream[idx+6], BitStream[idx+7], BitStream[idx+8]); + PrintAndLog("%d%d%d%d%d%d%d%d %d",BitStream[idx+9], BitStream[idx+10], BitStream[idx+11],BitStream[idx+12],BitStream[idx+13],BitStream[idx+14],BitStream[idx+15],BitStream[idx+16],BitStream[idx+17]); + PrintAndLog("%d%d%d%d%d%d%d%d %d facility",BitStream[idx+18], BitStream[idx+19], BitStream[idx+20],BitStream[idx+21],BitStream[idx+22],BitStream[idx+23],BitStream[idx+24],BitStream[idx+25],BitStream[idx+26]); + PrintAndLog("%d%d%d%d%d%d%d%d %d version",BitStream[idx+27], BitStream[idx+28], BitStream[idx+29],BitStream[idx+30],BitStream[idx+31],BitStream[idx+32],BitStream[idx+33],BitStream[idx+34],BitStream[idx+35]); + PrintAndLog("%d%d%d%d%d%d%d%d %d code1",BitStream[idx+36], BitStream[idx+37], BitStream[idx+38],BitStream[idx+39],BitStream[idx+40],BitStream[idx+41],BitStream[idx+42],BitStream[idx+43],BitStream[idx+44]); + PrintAndLog("%d%d%d%d%d%d%d%d %d code2",BitStream[idx+45], BitStream[idx+46], BitStream[idx+47],BitStream[idx+48],BitStream[idx+49],BitStream[idx+50],BitStream[idx+51],BitStream[idx+52],BitStream[idx+53]); + PrintAndLog("%d%d%d%d%d%d%d%d %d%d checksum",BitStream[idx+54],BitStream[idx+55],BitStream[idx+56],BitStream[idx+57],BitStream[idx+58],BitStream[idx+59],BitStream[idx+60],BitStream[idx+61],BitStream[idx+62],BitStream[idx+63]); + + uint32_t code = bytebits_to_byte(BitStream+idx,32); + uint32_t code2 = bytebits_to_byte(BitStream+idx+32,32); + uint8_t version = bytebits_to_byte(BitStream+idx+27,8); //14,4 + uint8_t facilitycode = bytebits_to_byte(BitStream+idx+18,8) ; + uint16_t number = (bytebits_to_byte(BitStream+idx+36,8)<<8)|(bytebits_to_byte(BitStream+idx+45,8)); //36,9 + PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x)",version,facilitycode,number,code,code2); + int i; + for (i=0;i<64;++i) + DemodBuffer[i]=BitStream[idx++]; + + DemodBufferLen=64; + return 1; } int CmdFSKdemod(const char *Cmd) //old CmdFSKdemod needs updating { - static const int LowTone[] = { - 1, 1, 1, 1, 1, -1, -1, -1, -1, -1, - 1, 1, 1, 1, 1, -1, -1, -1, -1, -1, - 1, 1, 1, 1, 1, -1, -1, -1, -1, -1, - 1, 1, 1, 1, 1, -1, -1, -1, -1, -1, - 1, 1, 1, 1, 1, -1, -1, -1, -1, -1 - }; - static const int HighTone[] = { - 1, 1, 1, 1, 1, -1, -1, -1, -1, - 1, 1, 1, 1, -1, -1, -1, -1, - 1, 1, 1, 1, -1, -1, -1, -1, - 1, 1, 1, 1, -1, -1, -1, -1, - 1, 1, 1, 1, -1, -1, -1, -1, - 1, 1, 1, 1, -1, -1, -1, -1, -1, - }; - - int lowLen = sizeof (LowTone) / sizeof (int); - int highLen = sizeof (HighTone) / sizeof (int); - int convLen = (highLen > lowLen) ? highLen : lowLen; //if highlen > lowLen then highlen else lowlen - uint32_t hi = 0, lo = 0; - - int i, j; - int minMark = 0, maxMark = 0; - - for (i = 0; i < GraphTraceLen - convLen; ++i) { - int lowSum = 0, highSum = 0; - - for (j = 0; j < lowLen; ++j) { - lowSum += LowTone[j]*GraphBuffer[i+j]; - } - for (j = 0; j < highLen; ++j) { - highSum += HighTone[j] * GraphBuffer[i + j]; - } - lowSum = abs(100 * lowSum / lowLen); - highSum = abs(100 * highSum / highLen); - GraphBuffer[i] = (highSum << 16) | lowSum; - } - - for(i = 0; i < GraphTraceLen - convLen - 16; ++i) { - int lowTot = 0, highTot = 0; - // 10 and 8 are f_s divided by f_l and f_h, rounded - for (j = 0; j < 10; ++j) { - lowTot += (GraphBuffer[i+j] & 0xffff); - } - for (j = 0; j < 8; j++) { - highTot += (GraphBuffer[i + j] >> 16); - } - GraphBuffer[i] = lowTot - highTot; - if (GraphBuffer[i] > maxMark) maxMark = GraphBuffer[i]; - if (GraphBuffer[i] < minMark) minMark = GraphBuffer[i]; - } - - GraphTraceLen -= (convLen + 16); - RepaintGraphWindow(); - - // Find bit-sync (3 lo followed by 3 high) (HID ONLY) - int max = 0, maxPos = 0; - for (i = 0; i < 6000; ++i) { - int dec = 0; - for (j = 0; j < 3 * lowLen; ++j) { - dec -= GraphBuffer[i + j]; - } - for (; j < 3 * (lowLen + highLen ); ++j) { - dec += GraphBuffer[i + j]; - } - if (dec > max) { - max = dec; - maxPos = i; - } - } - - // place start of bit sync marker in graph - GraphBuffer[maxPos] = maxMark; - GraphBuffer[maxPos + 1] = minMark; - - maxPos += j; - - // place end of bit sync marker in graph - GraphBuffer[maxPos] = maxMark; - GraphBuffer[maxPos+1] = minMark; - - PrintAndLog("actual data bits start at sample %d", maxPos); - PrintAndLog("length %d/%d", highLen, lowLen); - - uint8_t bits[46]; - bits[sizeof(bits)-1] = '\0'; - - // find bit pairs and manchester decode them - for (i = 0; i < arraylen(bits) - 1; ++i) { - int dec = 0; - for (j = 0; j < lowLen; ++j) { - dec -= GraphBuffer[maxPos + j]; - } - for (; j < lowLen + highLen; ++j) { - dec += GraphBuffer[maxPos + j]; - } - maxPos += j; - // place inter bit marker in graph - GraphBuffer[maxPos] = maxMark; - GraphBuffer[maxPos + 1] = minMark; - - // hi and lo form a 64 bit pair - hi = (hi << 1) | (lo >> 31); - lo = (lo << 1); - // store decoded bit as binary (in hi/lo) and text (in bits[]) - if(dec < 0) { - bits[i] = '1'; - lo |= 1; - } else { - bits[i] = '0'; - } - } - PrintAndLog("bits: '%s'", bits); - PrintAndLog("hex: %08x %08x", hi, lo); - return 0; + static const int LowTone[] = { + 1, 1, 1, 1, 1, -1, -1, -1, -1, -1, + 1, 1, 1, 1, 1, -1, -1, -1, -1, -1, + 1, 1, 1, 1, 1, -1, -1, -1, -1, -1, + 1, 1, 1, 1, 1, -1, -1, -1, -1, -1, + 1, 1, 1, 1, 1, -1, -1, -1, -1, -1 + }; + static const int HighTone[] = { + 1, 1, 1, 1, 1, -1, -1, -1, -1, + 1, 1, 1, 1, -1, -1, -1, -1, + 1, 1, 1, 1, -1, -1, -1, -1, + 1, 1, 1, 1, -1, -1, -1, -1, + 1, 1, 1, 1, -1, -1, -1, -1, + 1, 1, 1, 1, -1, -1, -1, -1, -1, + }; + + int lowLen = sizeof (LowTone) / sizeof (int); + int highLen = sizeof (HighTone) / sizeof (int); + int convLen = (highLen > lowLen) ? highLen : lowLen; //if highlen > lowLen then highlen else lowlen + uint32_t hi = 0, lo = 0; + + int i, j; + int minMark = 0, maxMark = 0; + + for (i = 0; i < GraphTraceLen - convLen; ++i) { + int lowSum = 0, highSum = 0; + + for (j = 0; j < lowLen; ++j) { + lowSum += LowTone[j]*GraphBuffer[i+j]; + } + for (j = 0; j < highLen; ++j) { + highSum += HighTone[j] * GraphBuffer[i + j]; + } + lowSum = abs(100 * lowSum / lowLen); + highSum = abs(100 * highSum / highLen); + GraphBuffer[i] = (highSum << 16) | lowSum; + } + + for(i = 0; i < GraphTraceLen - convLen - 16; ++i) { + int lowTot = 0, highTot = 0; + // 10 and 8 are f_s divided by f_l and f_h, rounded + for (j = 0; j < 10; ++j) { + lowTot += (GraphBuffer[i+j] & 0xffff); + } + for (j = 0; j < 8; j++) { + highTot += (GraphBuffer[i + j] >> 16); + } + GraphBuffer[i] = lowTot - highTot; + if (GraphBuffer[i] > maxMark) maxMark = GraphBuffer[i]; + if (GraphBuffer[i] < minMark) minMark = GraphBuffer[i]; + } + + GraphTraceLen -= (convLen + 16); + RepaintGraphWindow(); + + // Find bit-sync (3 lo followed by 3 high) (HID ONLY) + int max = 0, maxPos = 0; + for (i = 0; i < 6000; ++i) { + int dec = 0; + for (j = 0; j < 3 * lowLen; ++j) { + dec -= GraphBuffer[i + j]; + } + for (; j < 3 * (lowLen + highLen ); ++j) { + dec += GraphBuffer[i + j]; + } + if (dec > max) { + max = dec; + maxPos = i; + } + } + + // place start of bit sync marker in graph + GraphBuffer[maxPos] = maxMark; + GraphBuffer[maxPos + 1] = minMark; + + maxPos += j; + + // place end of bit sync marker in graph + GraphBuffer[maxPos] = maxMark; + GraphBuffer[maxPos+1] = minMark; + + PrintAndLog("actual data bits start at sample %d", maxPos); + PrintAndLog("length %d/%d", highLen, lowLen); + + uint8_t bits[46]; + bits[sizeof(bits)-1] = '\0'; + + // find bit pairs and manchester decode them + for (i = 0; i < arraylen(bits) - 1; ++i) { + int dec = 0; + for (j = 0; j < lowLen; ++j) { + dec -= GraphBuffer[maxPos + j]; + } + for (; j < lowLen + highLen; ++j) { + dec += GraphBuffer[maxPos + j]; + } + maxPos += j; + // place inter bit marker in graph + GraphBuffer[maxPos] = maxMark; + GraphBuffer[maxPos + 1] = minMark; + + // hi and lo form a 64 bit pair + hi = (hi << 1) | (lo >> 31); + lo = (lo << 1); + // store decoded bit as binary (in hi/lo) and text (in bits[]) + if(dec < 0) { + bits[i] = '1'; + lo |= 1; + } else { + bits[i] = '0'; + } + } + PrintAndLog("bits: '%s'", bits); + PrintAndLog("hex: %08x %08x", hi, lo); + return 0; } int CmdDetectNRZpskClockRate(const char *Cmd) { - GetNRZpskClock("",0,0); - return 0; + GetNRZpskClock("",0,0); + return 0; } int PSKnrzDemod(const char *Cmd){ - int invert=0; - int clk=0; - sscanf(Cmd, "%i %i", &clk, &invert); - if (invert != 0 && invert != 1) { - PrintAndLog("Invalid argument: %s", Cmd); - return -1; - } - uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; - int BitLen = getFromGraphBuf(BitStream); - int errCnt=0; - errCnt = pskNRZrawDemod(BitStream, &BitLen,&clk,&invert); - if (errCnt<0|| BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first) - //PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt); - return -1; - } - PrintAndLog("Tried PSK/NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen); - - //prime demod buffer for output - setDemodBuf(BitStream,BitLen); - return errCnt; + int invert=0; + int clk=0; + sscanf(Cmd, "%i %i", &clk, &invert); + if (invert != 0 && invert != 1) { + PrintAndLog("Invalid argument: %s", Cmd); + return -1; + } + uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; + size_t BitLen = getFromGraphBuf(BitStream); + int errCnt=0; + errCnt = pskNRZrawDemod(BitStream, &BitLen,&clk,&invert); + if (errCnt<0|| BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first) + //PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt); + return -1; + } + PrintAndLog("Tried PSK/NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen); + + //prime demod buffer for output + setDemodBuf(BitStream,BitLen); + return errCnt; } // Indala 26 bit decode // by marshmellow @@ -869,103 +871,103 @@ int PSKnrzDemod(const char *Cmd){ int CmdIndalaDecode(const char *Cmd) { - int ans=PSKnrzDemod(Cmd); - if (ans < 0){ - PrintAndLog("Error1: %d",ans); - return 0; - } - uint8_t invert=0; - ans = indala26decode(DemodBuffer, &DemodBufferLen, &invert); - if (ans < 1) { - PrintAndLog("Error2: %d",ans); - return -1; - } - char showbits[251]; - if(invert==1) PrintAndLog("Had to invert bits"); - //convert UID to HEX - uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7; - int idx; - uid1=0; - uid2=0; - PrintAndLog("BitLen: %d",DemodBufferLen); - if (DemodBufferLen==64){ - for( idx=0; idx<64; idx++) { - uid1=(uid1<<1)|(uid2>>31); - if (DemodBuffer[idx] == 0) { - uid2=(uid2<<1)|0; - showbits[idx]='0'; - } else { - uid2=(uid2<<1)|1; - showbits[idx]='1'; - } - } - showbits[idx]='\0'; - PrintAndLog("Indala UID=%s (%x%08x)", showbits, uid1, uid2); - } - else { - uid3=0; - uid4=0; - uid5=0; - uid6=0; - uid7=0; - for( idx=0; idx>31); - uid2=(uid2<<1)|(uid3>>31); - uid3=(uid3<<1)|(uid4>>31); - uid4=(uid4<<1)|(uid5>>31); - uid5=(uid5<<1)|(uid6>>31); - uid6=(uid6<<1)|(uid7>>31); - if (DemodBuffer[idx] == 0) { - uid7=(uid7<<1)|0; - showbits[idx]='0'; - } - else { - uid7=(uid7<<1)|1; - showbits[idx]='1'; - } - } - showbits[idx]='\0'; - PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)", showbits, uid1, uid2, uid3, uid4, uid5, uid6, uid7); - } - return 1; + int ans=PSKnrzDemod(Cmd); + if (ans < 0){ + PrintAndLog("Error1: %d",ans); + return 0; + } + uint8_t invert=0; + ans = indala26decode(DemodBuffer,(size_t *) &DemodBufferLen, &invert); + if (ans < 1) { + PrintAndLog("Error2: %d",ans); + return -1; + } + char showbits[251]; + if(invert==1) PrintAndLog("Had to invert bits"); + //convert UID to HEX + uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7; + int idx; + uid1=0; + uid2=0; + PrintAndLog("BitLen: %d",DemodBufferLen); + if (DemodBufferLen==64){ + for( idx=0; idx<64; idx++) { + uid1=(uid1<<1)|(uid2>>31); + if (DemodBuffer[idx] == 0) { + uid2=(uid2<<1)|0; + showbits[idx]='0'; + } else { + uid2=(uid2<<1)|1; + showbits[idx]='1'; + } + } + showbits[idx]='\0'; + PrintAndLog("Indala UID=%s (%x%08x)", showbits, uid1, uid2); + } + else { + uid3=0; + uid4=0; + uid5=0; + uid6=0; + uid7=0; + for( idx=0; idx>31); + uid2=(uid2<<1)|(uid3>>31); + uid3=(uid3<<1)|(uid4>>31); + uid4=(uid4<<1)|(uid5>>31); + uid5=(uid5<<1)|(uid6>>31); + uid6=(uid6<<1)|(uid7>>31); + if (DemodBuffer[idx] == 0) { + uid7=(uid7<<1)|0; + showbits[idx]='0'; + } + else { + uid7=(uid7<<1)|1; + showbits[idx]='1'; + } + } + showbits[idx]='\0'; + PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)", showbits, uid1, uid2, uid3, uid4, uid5, uid6, uid7); + } + return 1; } /* //by marshmellow (attempt to get rid of high immediately after a low) void pskCleanWave2(uint8_t *bitStream, int bitLen) { - int i; - int low=128; - int gap = 4; + int i; + int low=128; + int gap = 4; // int loopMax = 2048; - int newLow=0; - - for (i=0; i0){ - PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt); - } - PrintAndLog("PSK or NRZ demoded bitstream:"); - // Now output the bitstream to the scrollback by line of 16 bits - printDemodBuff(); - - return 1; + int errCnt= PSKnrzDemod(Cmd); + //output + if (errCnt<0) return 0; + if (errCnt>0){ + PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt); + } + PrintAndLog("PSK or NRZ demoded bitstream:"); + // Now output the bitstream to the scrollback by line of 16 bits + printDemodBuff(); + + return 1; } int CmdGrid(const char *Cmd) { - sscanf(Cmd, "%i %i", &PlotGridX, &PlotGridY); - PlotGridXdefault= PlotGridX; - PlotGridYdefault= PlotGridY; - RepaintGraphWindow(); - return 0; + sscanf(Cmd, "%i %i", &PlotGridX, &PlotGridY); + PlotGridXdefault= PlotGridX; + PlotGridYdefault= PlotGridY; + RepaintGraphWindow(); + return 0; } int CmdHexsamples(const char *Cmd) { - int i, j; - int requested = 0; - int offset = 0; - char string_buf[25]; - char* string_ptr = string_buf; - uint8_t got[40000]; - - sscanf(Cmd, "%i %i", &requested, &offset); - - /* if no args send something */ - if (requested == 0) { - requested = 8; - } - if (offset + requested > sizeof(got)) { - PrintAndLog("Tried to read past end of buffer, + > 40000"); - return 0; - } - - GetFromBigBuf(got,requested,offset); - WaitForResponse(CMD_ACK,NULL); - - i = 0; - for (j = 0; j < requested; j++) { - i++; - string_ptr += sprintf(string_ptr, "%02x ", got[j]); - if (i == 8) { - *(string_ptr - 1) = '\0'; // remove the trailing space - PrintAndLog("%s", string_buf); - string_buf[0] = '\0'; - string_ptr = string_buf; - i = 0; - } - if (j == requested - 1 && string_buf[0] != '\0') { // print any remaining bytes - *(string_ptr - 1) = '\0'; - PrintAndLog("%s", string_buf); - string_buf[0] = '\0'; - } - } - return 0; + int i, j; + int requested = 0; + int offset = 0; + char string_buf[25]; + char* string_ptr = string_buf; + uint8_t got[40000]; + + sscanf(Cmd, "%i %i", &requested, &offset); + + /* if no args send something */ + if (requested == 0) { + requested = 8; + } + if (offset + requested > sizeof(got)) { + PrintAndLog("Tried to read past end of buffer, + > 40000"); + return 0; + } + + GetFromBigBuf(got,requested,offset); + WaitForResponse(CMD_ACK,NULL); + + i = 0; + for (j = 0; j < requested; j++) { + i++; + string_ptr += sprintf(string_ptr, "%02x ", got[j]); + if (i == 8) { + *(string_ptr - 1) = '\0'; // remove the trailing space + PrintAndLog("%s", string_buf); + string_buf[0] = '\0'; + string_ptr = string_buf; + i = 0; + } + if (j == requested - 1 && string_buf[0] != '\0') { // print any remaining bytes + *(string_ptr - 1) = '\0'; + PrintAndLog("%s", string_buf); + string_buf[0] = '\0'; + } + } + return 0; } int CmdHide(const char *Cmd) { - HideGraphWindow(); - return 0; + HideGraphWindow(); + return 0; } int CmdHpf(const char *Cmd) { - int i; - int accum = 0; + int i; + int accum = 0; - for (i = 10; i < GraphTraceLen; ++i) - accum += GraphBuffer[i]; - accum /= (GraphTraceLen - 10); - for (i = 0; i < GraphTraceLen; ++i) - GraphBuffer[i] -= accum; + for (i = 10; i < GraphTraceLen; ++i) + accum += GraphBuffer[i]; + accum /= (GraphTraceLen - 10); + for (i = 0; i < GraphTraceLen; ++i) + GraphBuffer[i] -= accum; - RepaintGraphWindow(); - return 0; + RepaintGraphWindow(); + return 0; } int CmdSamples(const char *Cmd) { - int cnt = 0; - int n; - uint8_t got[40000]; - - n = strtol(Cmd, NULL, 0); - if (n == 0) n = 6000; - if (n > sizeof(got)) n = sizeof(got); - - PrintAndLog("Reading %d samples\n", n); - GetFromBigBuf(got,n,0); - WaitForResponse(CMD_ACK,NULL); - for (int j = 0; j < n; j++) { - GraphBuffer[cnt++] = ((int)got[j]) - 128; - } - - PrintAndLog("Done!\n"); - GraphTraceLen = n; - RepaintGraphWindow(); - return 0; + int cnt = 0; + int n; + uint8_t got[40000]; + + n = strtol(Cmd, NULL, 0); + if (n == 0) n = 6000; + if (n > sizeof(got)) n = sizeof(got); + + PrintAndLog("Reading %d samples\n", n); + GetFromBigBuf(got,n,0); + WaitForResponse(CMD_ACK,NULL); + for (int j = 0; j < n; j++) { + GraphBuffer[cnt++] = ((int)got[j]) - 128; + } + + PrintAndLog("Done!\n"); + GraphTraceLen = n; + RepaintGraphWindow(); + return 0; } int CmdTuneSamples(const char *Cmd) { - int cnt = 0; - int n = 255; - uint8_t got[255]; - - PrintAndLog("Reading %d samples\n", n); - GetFromBigBuf(got,n,7256); // armsrc/apps.h: #define FREE_BUFFER_OFFSET 7256 - WaitForResponse(CMD_ACK,NULL); - for (int j = 0; j < n; j++) { - GraphBuffer[cnt++] = ((int)got[j]) - 128; - } - - PrintAndLog("Done! Divisor 89 is 134khz, 95 is 125khz.\n"); - PrintAndLog("\n"); - GraphTraceLen = n; - RepaintGraphWindow(); - return 0; + int cnt = 0; + int n = 255; + uint8_t got[255]; + + PrintAndLog("Reading %d samples\n", n); + GetFromBigBuf(got,n,7256); // armsrc/apps.h: #define FREE_BUFFER_OFFSET 7256 + WaitForResponse(CMD_ACK,NULL); + for (int j = 0; j < n; j++) { + GraphBuffer[cnt++] = ((int)got[j]) - 128; + } + + PrintAndLog("Done! Divisor 89 is 134khz, 95 is 125khz.\n"); + PrintAndLog("\n"); + GraphTraceLen = n; + RepaintGraphWindow(); + return 0; } int CmdLoad(const char *Cmd) { - FILE *f = fopen(Cmd, "r"); - if (!f) { - PrintAndLog("couldn't open '%s'", Cmd); - return 0; - } - - GraphTraceLen = 0; - char line[80]; - while (fgets(line, sizeof (line), f)) { - GraphBuffer[GraphTraceLen] = atoi(line); - GraphTraceLen++; - } - fclose(f); - PrintAndLog("loaded %d samples", GraphTraceLen); - RepaintGraphWindow(); - return 0; + FILE *f = fopen(Cmd, "r"); + if (!f) { + PrintAndLog("couldn't open '%s'", Cmd); + return 0; + } + + GraphTraceLen = 0; + char line[80]; + while (fgets(line, sizeof (line), f)) { + GraphBuffer[GraphTraceLen] = atoi(line); + GraphTraceLen++; + } + fclose(f); + PrintAndLog("loaded %d samples", GraphTraceLen); + RepaintGraphWindow(); + return 0; } int CmdLtrim(const char *Cmd) { - int ds = atoi(Cmd); + int ds = atoi(Cmd); - for (int i = ds; i < GraphTraceLen; ++i) - GraphBuffer[i-ds] = GraphBuffer[i]; - GraphTraceLen -= ds; + for (int i = ds; i < GraphTraceLen; ++i) + GraphBuffer[i-ds] = GraphBuffer[i]; + GraphTraceLen -= ds; - RepaintGraphWindow(); - return 0; + RepaintGraphWindow(); + return 0; } int CmdRtrim(const char *Cmd) { - int ds = atoi(Cmd); + int ds = atoi(Cmd); - GraphTraceLen = ds; + GraphTraceLen = ds; - RepaintGraphWindow(); - return 0; + RepaintGraphWindow(); + return 0; } /* @@ -1161,416 +1163,416 @@ int CmdRtrim(const char *Cmd) */ int CmdManchesterDemod(const char *Cmd) { - int i, j, invert= 0; - int bit; - int clock; - int lastval = 0; - int low = 0; - int high = 0; - int hithigh, hitlow, first; - int lc = 0; - int bitidx = 0; - int bit2idx = 0; - int warnings = 0; - - /* check if we're inverting output */ - if (*Cmd == 'i') - { - PrintAndLog("Inverting output"); - invert = 1; - ++Cmd; - do - ++Cmd; - while(*Cmd == ' '); // in case a 2nd argument was given - } - - /* Holds the decoded bitstream: each clock period contains 2 bits */ - /* later simplified to 1 bit after manchester decoding. */ - /* Add 10 bits to allow for noisy / uncertain traces without aborting */ - /* int BitStream[GraphTraceLen*2/clock+10]; */ - - /* But it does not work if compiling on WIndows: therefore we just allocate a */ - /* large array */ - uint8_t BitStream[MAX_GRAPH_TRACE_LEN] = {0}; - - /* Detect high and lows */ - for (i = 0; i < GraphTraceLen; i++) - { - if (GraphBuffer[i] > high) - high = GraphBuffer[i]; - else if (GraphBuffer[i] < low) - low = GraphBuffer[i]; - } - - /* Get our clock */ - clock = GetClock(Cmd, high, 1); - - int tolerance = clock/4; - - /* Detect first transition */ - /* Lo-Hi (arbitrary) */ - /* skip to the first high */ - for (i= 0; i < GraphTraceLen; i++) - if (GraphBuffer[i] == high) - break; - /* now look for the first low */ - for (; i < GraphTraceLen; i++) - { - if (GraphBuffer[i] == low) - { - lastval = i; - break; - } - } - - /* If we're not working with 1/0s, demod based off clock */ - if (high != 1) - { - bit = 0; /* We assume the 1st bit is zero, it may not be - * the case: this routine (I think) has an init problem. - * Ed. - */ - for (; i < (int)(GraphTraceLen / clock); i++) - { - hithigh = 0; - hitlow = 0; - first = 1; - - /* Find out if we hit both high and low peaks */ - for (j = 0; j < clock; j++) - { - if (GraphBuffer[(i * clock) + j] == high) - hithigh = 1; - else if (GraphBuffer[(i * clock) + j] == low) - hitlow = 1; - - /* it doesn't count if it's the first part of our read - because it's really just trailing from the last sequence */ - if (first && (hithigh || hitlow)) - hithigh = hitlow = 0; - else - first = 0; - - if (hithigh && hitlow) - break; - } - - /* If we didn't hit both high and low peaks, we had a bit transition */ - if (!hithigh || !hitlow) - bit ^= 1; - - BitStream[bit2idx++] = bit ^ invert; - } - } - - /* standard 1/0 bitstream */ - else - { - - /* Then detect duration between 2 successive transitions */ - for (bitidx = 1; i < GraphTraceLen; i++) - { - if (GraphBuffer[i-1] != GraphBuffer[i]) - { - lc = i-lastval; - lastval = i; - - // Error check: if bitidx becomes too large, we do not - // have a Manchester encoded bitstream or the clock is really - // wrong! - if (bitidx > (GraphTraceLen*2/clock+8) ) { - PrintAndLog("Error: the clock you gave is probably wrong, aborting."); - return 0; - } - // Then switch depending on lc length: - // Tolerance is 1/4 of clock rate (arbitrary) - if (abs(lc-clock/2) < tolerance) { - // Short pulse : either "1" or "0" - BitStream[bitidx++]=GraphBuffer[i-1]; - } else if (abs(lc-clock) < tolerance) { - // Long pulse: either "11" or "00" - BitStream[bitidx++]=GraphBuffer[i-1]; - BitStream[bitidx++]=GraphBuffer[i-1]; - } else { - // Error - warnings++; - PrintAndLog("Warning: Manchester decode error for pulse width detection."); - PrintAndLog("(too many of those messages mean either the stream is not Manchester encoded, or clock is wrong)"); - - if (warnings > 10) - { - PrintAndLog("Error: too many detection errors, aborting."); - return 0; - } - } - } - } - - // At this stage, we now have a bitstream of "01" ("1") or "10" ("0"), parse it into final decoded bitstream - // Actually, we overwrite BitStream with the new decoded bitstream, we just need to be careful - // to stop output at the final bitidx2 value, not bitidx - for (i = 0; i < bitidx; i += 2) { - if ((BitStream[i] == 0) && (BitStream[i+1] == 1)) { - BitStream[bit2idx++] = 1 ^ invert; - } else if ((BitStream[i] == 1) && (BitStream[i+1] == 0)) { - BitStream[bit2idx++] = 0 ^ invert; - } else { - // We cannot end up in this state, this means we are unsynchronized, - // move up 1 bit: - i++; - warnings++; - PrintAndLog("Unsynchronized, resync..."); - PrintAndLog("(too many of those messages mean the stream is not Manchester encoded)"); - - if (warnings > 10) - { - PrintAndLog("Error: too many decode errors, aborting."); - return 0; - } - } - } - } - - PrintAndLog("Manchester decoded bitstream"); - // Now output the bitstream to the scrollback by line of 16 bits - for (i = 0; i < (bit2idx-16); i+=16) { - PrintAndLog("%i %i %i %i %i %i %i %i %i %i %i %i %i %i %i %i", - BitStream[i], - BitStream[i+1], - BitStream[i+2], - BitStream[i+3], - BitStream[i+4], - BitStream[i+5], - BitStream[i+6], - BitStream[i+7], - BitStream[i+8], - BitStream[i+9], - BitStream[i+10], - BitStream[i+11], - BitStream[i+12], - BitStream[i+13], - BitStream[i+14], - BitStream[i+15]); - } - return 0; + int i, j, invert= 0; + int bit; + int clock; + int lastval = 0; + int low = 0; + int high = 0; + int hithigh, hitlow, first; + int lc = 0; + int bitidx = 0; + int bit2idx = 0; + int warnings = 0; + + /* check if we're inverting output */ + if (*Cmd == 'i') + { + PrintAndLog("Inverting output"); + invert = 1; + ++Cmd; + do + ++Cmd; + while(*Cmd == ' '); // in case a 2nd argument was given + } + + /* Holds the decoded bitstream: each clock period contains 2 bits */ + /* later simplified to 1 bit after manchester decoding. */ + /* Add 10 bits to allow for noisy / uncertain traces without aborting */ + /* int BitStream[GraphTraceLen*2/clock+10]; */ + + /* But it does not work if compiling on WIndows: therefore we just allocate a */ + /* large array */ + uint8_t BitStream[MAX_GRAPH_TRACE_LEN] = {0}; + + /* Detect high and lows */ + for (i = 0; i < GraphTraceLen; i++) + { + if (GraphBuffer[i] > high) + high = GraphBuffer[i]; + else if (GraphBuffer[i] < low) + low = GraphBuffer[i]; + } + + /* Get our clock */ + clock = GetClock(Cmd, high, 1); + + int tolerance = clock/4; + + /* Detect first transition */ + /* Lo-Hi (arbitrary) */ + /* skip to the first high */ + for (i= 0; i < GraphTraceLen; i++) + if (GraphBuffer[i] == high) + break; + /* now look for the first low */ + for (; i < GraphTraceLen; i++) + { + if (GraphBuffer[i] == low) + { + lastval = i; + break; + } + } + + /* If we're not working with 1/0s, demod based off clock */ + if (high != 1) + { + bit = 0; /* We assume the 1st bit is zero, it may not be + * the case: this routine (I think) has an init problem. + * Ed. + */ + for (; i < (int)(GraphTraceLen / clock); i++) + { + hithigh = 0; + hitlow = 0; + first = 1; + + /* Find out if we hit both high and low peaks */ + for (j = 0; j < clock; j++) + { + if (GraphBuffer[(i * clock) + j] == high) + hithigh = 1; + else if (GraphBuffer[(i * clock) + j] == low) + hitlow = 1; + + /* it doesn't count if it's the first part of our read + because it's really just trailing from the last sequence */ + if (first && (hithigh || hitlow)) + hithigh = hitlow = 0; + else + first = 0; + + if (hithigh && hitlow) + break; + } + + /* If we didn't hit both high and low peaks, we had a bit transition */ + if (!hithigh || !hitlow) + bit ^= 1; + + BitStream[bit2idx++] = bit ^ invert; + } + } + + /* standard 1/0 bitstream */ + else + { + + /* Then detect duration between 2 successive transitions */ + for (bitidx = 1; i < GraphTraceLen; i++) + { + if (GraphBuffer[i-1] != GraphBuffer[i]) + { + lc = i-lastval; + lastval = i; + + // Error check: if bitidx becomes too large, we do not + // have a Manchester encoded bitstream or the clock is really + // wrong! + if (bitidx > (GraphTraceLen*2/clock+8) ) { + PrintAndLog("Error: the clock you gave is probably wrong, aborting."); + return 0; + } + // Then switch depending on lc length: + // Tolerance is 1/4 of clock rate (arbitrary) + if (abs(lc-clock/2) < tolerance) { + // Short pulse : either "1" or "0" + BitStream[bitidx++]=GraphBuffer[i-1]; + } else if (abs(lc-clock) < tolerance) { + // Long pulse: either "11" or "00" + BitStream[bitidx++]=GraphBuffer[i-1]; + BitStream[bitidx++]=GraphBuffer[i-1]; + } else { + // Error + warnings++; + PrintAndLog("Warning: Manchester decode error for pulse width detection."); + PrintAndLog("(too many of those messages mean either the stream is not Manchester encoded, or clock is wrong)"); + + if (warnings > 10) + { + PrintAndLog("Error: too many detection errors, aborting."); + return 0; + } + } + } + } + + // At this stage, we now have a bitstream of "01" ("1") or "10" ("0"), parse it into final decoded bitstream + // Actually, we overwrite BitStream with the new decoded bitstream, we just need to be careful + // to stop output at the final bitidx2 value, not bitidx + for (i = 0; i < bitidx; i += 2) { + if ((BitStream[i] == 0) && (BitStream[i+1] == 1)) { + BitStream[bit2idx++] = 1 ^ invert; + } else if ((BitStream[i] == 1) && (BitStream[i+1] == 0)) { + BitStream[bit2idx++] = 0 ^ invert; + } else { + // We cannot end up in this state, this means we are unsynchronized, + // move up 1 bit: + i++; + warnings++; + PrintAndLog("Unsynchronized, resync..."); + PrintAndLog("(too many of those messages mean the stream is not Manchester encoded)"); + + if (warnings > 10) + { + PrintAndLog("Error: too many decode errors, aborting."); + return 0; + } + } + } + } + + PrintAndLog("Manchester decoded bitstream"); + // Now output the bitstream to the scrollback by line of 16 bits + for (i = 0; i < (bit2idx-16); i+=16) { + PrintAndLog("%i %i %i %i %i %i %i %i %i %i %i %i %i %i %i %i", + BitStream[i], + BitStream[i+1], + BitStream[i+2], + BitStream[i+3], + BitStream[i+4], + BitStream[i+5], + BitStream[i+6], + BitStream[i+7], + BitStream[i+8], + BitStream[i+9], + BitStream[i+10], + BitStream[i+11], + BitStream[i+12], + BitStream[i+13], + BitStream[i+14], + BitStream[i+15]); + } + return 0; } /* Modulate our data into manchester */ int CmdManchesterMod(const char *Cmd) { - int i, j; - int clock; - int bit, lastbit, wave; - - /* Get our clock */ - clock = GetClock(Cmd, 0, 1); - - wave = 0; - lastbit = 1; - for (i = 0; i < (int)(GraphTraceLen / clock); i++) - { - bit = GraphBuffer[i * clock] ^ 1; - - for (j = 0; j < (int)(clock/2); j++) - GraphBuffer[(i * clock) + j] = bit ^ lastbit ^ wave; - for (j = (int)(clock/2); j < clock; j++) - GraphBuffer[(i * clock) + j] = bit ^ lastbit ^ wave ^ 1; - - /* Keep track of how we start our wave and if we changed or not this time */ - wave ^= bit ^ lastbit; - lastbit = bit; - } - - RepaintGraphWindow(); - return 0; + int i, j; + int clock; + int bit, lastbit, wave; + + /* Get our clock */ + clock = GetClock(Cmd, 0, 1); + + wave = 0; + lastbit = 1; + for (i = 0; i < (int)(GraphTraceLen / clock); i++) + { + bit = GraphBuffer[i * clock] ^ 1; + + for (j = 0; j < (int)(clock/2); j++) + GraphBuffer[(i * clock) + j] = bit ^ lastbit ^ wave; + for (j = (int)(clock/2); j < clock; j++) + GraphBuffer[(i * clock) + j] = bit ^ lastbit ^ wave ^ 1; + + /* Keep track of how we start our wave and if we changed or not this time */ + wave ^= bit ^ lastbit; + lastbit = bit; + } + + RepaintGraphWindow(); + return 0; } int CmdNorm(const char *Cmd) { - int i; - int max = INT_MIN, min = INT_MAX; - - for (i = 10; i < GraphTraceLen; ++i) { - if (GraphBuffer[i] > max) - max = GraphBuffer[i]; - if (GraphBuffer[i] < min) - min = GraphBuffer[i]; - } - - if (max != min) { - for (i = 0; i < GraphTraceLen; ++i) { - GraphBuffer[i] = (GraphBuffer[i] - ((max + min) / 2)) * 256 / - (max - min); - //marshmelow: adjusted *1000 to *256 to make +/- 128 so demod commands still work - } - } - RepaintGraphWindow(); - return 0; + int i; + int max = INT_MIN, min = INT_MAX; + + for (i = 10; i < GraphTraceLen; ++i) { + if (GraphBuffer[i] > max) + max = GraphBuffer[i]; + if (GraphBuffer[i] < min) + min = GraphBuffer[i]; + } + + if (max != min) { + for (i = 0; i < GraphTraceLen; ++i) { + GraphBuffer[i] = (GraphBuffer[i] - ((max + min) / 2)) * 256 / + (max - min); + //marshmelow: adjusted *1000 to *256 to make +/- 128 so demod commands still work + } + } + RepaintGraphWindow(); + return 0; } int CmdPlot(const char *Cmd) { - ShowGraphWindow(); - return 0; + ShowGraphWindow(); + return 0; } int CmdSave(const char *Cmd) { - FILE *f = fopen(Cmd, "w"); - if(!f) { - PrintAndLog("couldn't open '%s'", Cmd); - return 0; - } - int i; - for (i = 0; i < GraphTraceLen; i++) { - fprintf(f, "%d\n", GraphBuffer[i]); - } - fclose(f); - PrintAndLog("saved to '%s'", Cmd); - return 0; + FILE *f = fopen(Cmd, "w"); + if(!f) { + PrintAndLog("couldn't open '%s'", Cmd); + return 0; + } + int i; + for (i = 0; i < GraphTraceLen; i++) { + fprintf(f, "%d\n", GraphBuffer[i]); + } + fclose(f); + PrintAndLog("saved to '%s'", Cmd); + return 0; } int CmdScale(const char *Cmd) { - CursorScaleFactor = atoi(Cmd); - if (CursorScaleFactor == 0) { - PrintAndLog("bad, can't have zero scale"); - CursorScaleFactor = 1; - } - RepaintGraphWindow(); - return 0; + CursorScaleFactor = atoi(Cmd); + if (CursorScaleFactor == 0) { + PrintAndLog("bad, can't have zero scale"); + CursorScaleFactor = 1; + } + RepaintGraphWindow(); + return 0; } int CmdThreshold(const char *Cmd) { - int threshold = atoi(Cmd); - - for (int i = 0; i < GraphTraceLen; ++i) { - if (GraphBuffer[i] >= threshold) - GraphBuffer[i] = 1; - else - GraphBuffer[i] = -1; - } - RepaintGraphWindow(); - return 0; + int threshold = atoi(Cmd); + + for (int i = 0; i < GraphTraceLen; ++i) { + if (GraphBuffer[i] >= threshold) + GraphBuffer[i] = 1; + else + GraphBuffer[i] = -1; + } + RepaintGraphWindow(); + return 0; } int CmdDirectionalThreshold(const char *Cmd) { int8_t upThres = param_get8(Cmd, 0); int8_t downThres = param_get8(Cmd, 1); - - printf("Applying Up Threshold: %d, Down Threshold: %d\n", upThres, downThres); - - int lastValue = GraphBuffer[0]; - GraphBuffer[0] = 0; // Will be changed at the end, but init 0 as we adjust to last samples value if no threshold kicks in. - - for (int i = 1; i < GraphTraceLen; ++i) { - // Apply first threshold to samples heading up - if (GraphBuffer[i] >= upThres && GraphBuffer[i] > lastValue) - { - lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it. - GraphBuffer[i] = 1; - } - // Apply second threshold to samples heading down - else if (GraphBuffer[i] <= downThres && GraphBuffer[i] < lastValue) - { - lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it. - GraphBuffer[i] = -1; - } - else - { - lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it. - GraphBuffer[i] = GraphBuffer[i-1]; - - } - } - GraphBuffer[0] = GraphBuffer[1]; // Aline with first edited sample. - RepaintGraphWindow(); - return 0; + + printf("Applying Up Threshold: %d, Down Threshold: %d\n", upThres, downThres); + + int lastValue = GraphBuffer[0]; + GraphBuffer[0] = 0; // Will be changed at the end, but init 0 as we adjust to last samples value if no threshold kicks in. + + for (int i = 1; i < GraphTraceLen; ++i) { + // Apply first threshold to samples heading up + if (GraphBuffer[i] >= upThres && GraphBuffer[i] > lastValue) + { + lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it. + GraphBuffer[i] = 1; + } + // Apply second threshold to samples heading down + else if (GraphBuffer[i] <= downThres && GraphBuffer[i] < lastValue) + { + lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it. + GraphBuffer[i] = -1; + } + else + { + lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it. + GraphBuffer[i] = GraphBuffer[i-1]; + + } + } + GraphBuffer[0] = GraphBuffer[1]; // Aline with first edited sample. + RepaintGraphWindow(); + return 0; } int CmdZerocrossings(const char *Cmd) { - // Zero-crossings aren't meaningful unless the signal is zero-mean. - CmdHpf(""); - - int sign = 1; - int zc = 0; - int lastZc = 0; - - for (int i = 0; i < GraphTraceLen; ++i) { - if (GraphBuffer[i] * sign >= 0) { - // No change in sign, reproduce the previous sample count. - zc++; - GraphBuffer[i] = lastZc; - } else { - // Change in sign, reset the sample count. - sign = -sign; - GraphBuffer[i] = lastZc; - if (sign > 0) { - lastZc = zc; - zc = 0; - } - } - } - - RepaintGraphWindow(); - return 0; + // Zero-crossings aren't meaningful unless the signal is zero-mean. + CmdHpf(""); + + int sign = 1; + int zc = 0; + int lastZc = 0; + + for (int i = 0; i < GraphTraceLen; ++i) { + if (GraphBuffer[i] * sign >= 0) { + // No change in sign, reproduce the previous sample count. + zc++; + GraphBuffer[i] = lastZc; + } else { + // Change in sign, reset the sample count. + sign = -sign; + GraphBuffer[i] = lastZc; + if (sign > 0) { + lastZc = zc; + zc = 0; + } + } + } + + RepaintGraphWindow(); + return 0; } -static command_t CommandTable[] = +static command_t CommandTable[] = { - {"help", CmdHelp, 1, "This help"}, - {"amp", CmdAmp, 1, "Amplify peaks"}, - {"askdemod", Cmdaskdemod, 1, "<0 or 1> -- Attempt to demodulate simple ASK tags"}, - {"askmandemod", Cmdaskmandemod, 1, "[clock] [invert<0 or 1>] -- Attempt to demodulate ASK/Manchester tags and output binary (args optional[clock will try Auto-detect])"}, - {"askrawdemod", Cmdaskrawdemod, 1, "[clock] [invert<0 or 1>] -- Attempt to demodulate ASK tags and output binary (args optional[clock will try Auto-detect])"}, - {"autocorr", CmdAutoCorr, 1, " -- Autocorrelation over window"}, - {"biphaserawdecode",CmdBiphaseDecodeRaw,1,"[offset] Biphase decode binary stream already in graph buffer (offset = bit to start decode from)"}, - {"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"}, - {"bitstream", CmdBitstream, 1, "[clock rate] -- Convert waveform into a bitstream"}, - {"buffclear", CmdBuffClear, 1, "Clear sample buffer and graph window"}, - {"dec", CmdDec, 1, "Decimate samples"}, - {"detectclock", CmdDetectClockRate, 1, "Detect ASK, PSK, or NRZ clock rate"}, - {"fskdemod", CmdFSKdemod, 1, "Demodulate graph window as a HID FSK"}, - {"fskhiddemod", CmdFSKdemodHID, 1, "Demodulate graph window as a HID FSK using raw"}, - {"fskiodemod", CmdFSKdemodIO, 1, "Demodulate graph window as an IO Prox FSK using raw"}, - {"fskrawdemod", CmdFSKrawdemod, 1, "[clock rate] [invert] [rchigh] [rclow] Demodulate graph window from FSK to binary (clock = 50)(invert = 1 or 0)(rchigh = 10)(rclow=8)"}, - {"grid", CmdGrid, 1, " -- overlay grid on graph window, use zero value to turn off either"}, - {"hexsamples", CmdHexsamples, 0, " [] -- Dump big buffer as hex bytes"}, - {"hide", CmdHide, 1, "Hide graph window"}, - {"hpf", CmdHpf, 1, "Remove DC offset from trace"}, - {"load", CmdLoad, 1, " -- Load trace (to graph window"}, - {"ltrim", CmdLtrim, 1, " -- Trim samples from left of trace"}, - {"rtrim", CmdRtrim, 1, " -- Trim samples from right of trace"}, - {"mandemod", CmdManchesterDemod, 1, "[i] [clock rate] -- Manchester demodulate binary stream (option 'i' to invert output)"}, - {"manrawdecode", Cmdmandecoderaw, 1, "Manchester decode binary stream already in graph buffer"}, - {"manmod", CmdManchesterMod, 1, "[clock rate] -- Manchester modulate a binary stream"}, - {"norm", CmdNorm, 1, "Normalize max/min to +/-128"}, - {"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"}, - {"pskclean", CmdPskClean, 1, "Attempt to clean psk wave"}, - {"pskdetectclock",CmdDetectNRZpskClockRate, 1, "Detect ASK, PSK, or NRZ clock rate"}, - {"pskindalademod",CmdIndalaDecode, 1, "[clock] [invert<0 or 1>] -- Attempt to demodulate psk indala tags and output ID binary & hex (args optional[clock will try Auto-detect])"}, - {"psknrzrawdemod",CmdpskNRZrawDemod, 1, "[clock] [invert<0 or 1>] -- Attempt to demodulate psk or nrz tags and output binary (args optional[clock will try Auto-detect])"}, - {"samples", CmdSamples, 0, "[512 - 40000] -- Get raw samples for graph window"}, - {"save", CmdSave, 1, " -- Save trace (from graph window)"}, - {"scale", CmdScale, 1, " -- Set cursor display scale"}, - {"threshold", CmdThreshold, 1, " -- Maximize/minimize every value in the graph window depending on threshold"}, - {"dirthreshold", CmdDirectionalThreshold, 1, " -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."}, - {"tune", CmdTuneSamples, 0, "Get hw tune samples for graph window"}, - {"zerocrossings", CmdZerocrossings, 1, "Count time between zero-crossings"}, - {NULL, NULL, 0, NULL} + {"help", CmdHelp, 1, "This help"}, + {"amp", CmdAmp, 1, "Amplify peaks"}, + {"askdemod", Cmdaskdemod, 1, "<0 or 1> -- Attempt to demodulate simple ASK tags"}, + {"askmandemod", Cmdaskmandemod, 1, "[clock] [invert<0 or 1>] -- Attempt to demodulate ASK/Manchester tags and output binary (args optional[clock will try Auto-detect])"}, + {"askrawdemod", Cmdaskrawdemod, 1, "[clock] [invert<0 or 1>] -- Attempt to demodulate ASK tags and output binary (args optional[clock will try Auto-detect])"}, + {"autocorr", CmdAutoCorr, 1, " -- Autocorrelation over window"}, + {"biphaserawdecode",CmdBiphaseDecodeRaw,1,"[offset] Biphase decode binary stream already in graph buffer (offset = bit to start decode from)"}, + {"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"}, + {"bitstream", CmdBitstream, 1, "[clock rate] -- Convert waveform into a bitstream"}, + {"buffclear", CmdBuffClear, 1, "Clear sample buffer and graph window"}, + {"dec", CmdDec, 1, "Decimate samples"}, + {"detectclock", CmdDetectClockRate, 1, "Detect ASK clock rate"}, + {"fskdemod", CmdFSKdemod, 1, "Demodulate graph window as a HID FSK"}, + {"fskhiddemod", CmdFSKdemodHID, 1, "Demodulate graph window as a HID FSK using raw"}, + {"fskiodemod", CmdFSKdemodIO, 1, "Demodulate graph window as an IO Prox FSK using raw"}, + {"fskrawdemod", CmdFSKrawdemod, 1, "[clock rate] [invert] [rchigh] [rclow] Demodulate graph window from FSK to binary (clock = 50)(invert = 1 or 0)(rchigh = 10)(rclow=8)"}, + {"grid", CmdGrid, 1, " -- overlay grid on graph window, use zero value to turn off either"}, + {"hexsamples", CmdHexsamples, 0, " [] -- Dump big buffer as hex bytes"}, + {"hide", CmdHide, 1, "Hide graph window"}, + {"hpf", CmdHpf, 1, "Remove DC offset from trace"}, + {"load", CmdLoad, 1, " -- Load trace (to graph window"}, + {"ltrim", CmdLtrim, 1, " -- Trim samples from left of trace"}, + {"rtrim", CmdRtrim, 1, " -- Trim samples from right of trace"}, + {"mandemod", CmdManchesterDemod, 1, "[i] [clock rate] -- Manchester demodulate binary stream (option 'i' to invert output)"}, + {"manrawdecode", Cmdmandecoderaw, 1, "Manchester decode binary stream already in graph buffer"}, + {"manmod", CmdManchesterMod, 1, "[clock rate] -- Manchester modulate a binary stream"}, + {"norm", CmdNorm, 1, "Normalize max/min to +/-128"}, + {"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"}, + {"pskclean", CmdPskClean, 1, "Attempt to clean psk wave"}, + {"pskdetectclock",CmdDetectNRZpskClockRate, 1, "Detect ASK, PSK, or NRZ clock rate"}, + {"pskindalademod",CmdIndalaDecode, 1, "[clock] [invert<0 or 1>] -- Attempt to demodulate psk indala tags and output ID binary & hex (args optional[clock will try Auto-detect])"}, + {"psknrzrawdemod",CmdpskNRZrawDemod, 1, "[clock] [invert<0 or 1>] -- Attempt to demodulate psk or nrz tags and output binary (args optional[clock will try Auto-detect])"}, + {"samples", CmdSamples, 0, "[512 - 40000] -- Get raw samples for graph window"}, + {"save", CmdSave, 1, " -- Save trace (from graph window)"}, + {"scale", CmdScale, 1, " -- Set cursor display scale"}, + {"threshold", CmdThreshold, 1, " -- Maximize/minimize every value in the graph window depending on threshold"}, + {"dirthreshold", CmdDirectionalThreshold, 1, " -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."}, + {"tune", CmdTuneSamples, 0, "Get hw tune samples for graph window"}, + {"zerocrossings", CmdZerocrossings, 1, "Count time between zero-crossings"}, + {NULL, NULL, 0, NULL} }; int CmdData(const char *Cmd) { - CmdsParse(CommandTable, Cmd); - return 0; + CmdsParse(CommandTable, Cmd); + return 0; } int CmdHelp(const char *Cmd) { - CmdsHelp(CommandTable); - return 0; + CmdsHelp(CommandTable); + return 0; } diff --git a/client/cmdlf.c b/client/cmdlf.c index 42a29d0d..af24aa80 100644 --- a/client/cmdlf.c +++ b/client/cmdlf.c @@ -34,592 +34,592 @@ static int CmdHelp(const char *Cmd); /* send a command before reading */ int CmdLFCommandRead(const char *Cmd) { - static char dummy[3]; + static char dummy[3]; - dummy[0]= ' '; + dummy[0]= ' '; - UsbCommand c = {CMD_MOD_THEN_ACQUIRE_RAW_ADC_SAMPLES_125K}; - sscanf(Cmd, "%"lli" %"lli" %"lli" %s %s", &c.arg[0], &c.arg[1], &c.arg[2],(char*)(&c.d.asBytes),(char*)(&dummy+1)); - // in case they specified 'h' - strcpy((char *)&c.d.asBytes + strlen((char *)c.d.asBytes), dummy); - SendCommand(&c); - return 0; + UsbCommand c = {CMD_MOD_THEN_ACQUIRE_RAW_ADC_SAMPLES_125K}; + sscanf(Cmd, "%"lli" %"lli" %"lli" %s %s", &c.arg[0], &c.arg[1], &c.arg[2],(char*)(&c.d.asBytes),(char*)(&dummy+1)); + // in case they specified 'h' + strcpy((char *)&c.d.asBytes + strlen((char *)c.d.asBytes), dummy); + SendCommand(&c); + return 0; } int CmdFlexdemod(const char *Cmd) { - int i; - for (i = 0; i < GraphTraceLen; ++i) { - if (GraphBuffer[i] < 0) { - GraphBuffer[i] = -1; - } else { - GraphBuffer[i] = 1; - } - } - - #define LONG_WAIT 100 - int start; - for (start = 0; start < GraphTraceLen - LONG_WAIT; start++) { - int first = GraphBuffer[start]; - for (i = start; i < start + LONG_WAIT; i++) { - if (GraphBuffer[i] != first) { - break; - } - } - if (i == (start + LONG_WAIT)) { - break; - } - } - if (start == GraphTraceLen - LONG_WAIT) { - PrintAndLog("nothing to wait for"); - return 0; - } - - GraphBuffer[start] = 2; - GraphBuffer[start+1] = -2; - - uint8_t bits[64]; - - int bit; - i = start; - for (bit = 0; bit < 64; bit++) { - int j; - int sum = 0; - for (j = 0; j < 16; j++) { - sum += GraphBuffer[i++]; - } - if (sum > 0) { - bits[bit] = 1; - } else { - bits[bit] = 0; - } - PrintAndLog("bit %d sum %d", bit, sum); - } - - for (bit = 0; bit < 64; bit++) { - int j; - int sum = 0; - for (j = 0; j < 16; j++) { - sum += GraphBuffer[i++]; - } - if (sum > 0 && bits[bit] != 1) { - PrintAndLog("oops1 at %d", bit); - } - if (sum < 0 && bits[bit] != 0) { - PrintAndLog("oops2 at %d", bit); - } - } - - GraphTraceLen = 32*64; - i = 0; - int phase = 0; - for (bit = 0; bit < 64; bit++) { - if (bits[bit] == 0) { - phase = 0; - } else { - phase = 1; - } - int j; - for (j = 0; j < 32; j++) { - GraphBuffer[i++] = phase; - phase = !phase; - } - } - - RepaintGraphWindow(); - return 0; + int i; + for (i = 0; i < GraphTraceLen; ++i) { + if (GraphBuffer[i] < 0) { + GraphBuffer[i] = -1; + } else { + GraphBuffer[i] = 1; + } + } + + #define LONG_WAIT 100 + int start; + for (start = 0; start < GraphTraceLen - LONG_WAIT; start++) { + int first = GraphBuffer[start]; + for (i = start; i < start + LONG_WAIT; i++) { + if (GraphBuffer[i] != first) { + break; + } + } + if (i == (start + LONG_WAIT)) { + break; + } + } + if (start == GraphTraceLen - LONG_WAIT) { + PrintAndLog("nothing to wait for"); + return 0; + } + + GraphBuffer[start] = 2; + GraphBuffer[start+1] = -2; + + uint8_t bits[64]; + + int bit; + i = start; + for (bit = 0; bit < 64; bit++) { + int j; + int sum = 0; + for (j = 0; j < 16; j++) { + sum += GraphBuffer[i++]; + } + if (sum > 0) { + bits[bit] = 1; + } else { + bits[bit] = 0; + } + PrintAndLog("bit %d sum %d", bit, sum); + } + + for (bit = 0; bit < 64; bit++) { + int j; + int sum = 0; + for (j = 0; j < 16; j++) { + sum += GraphBuffer[i++]; + } + if (sum > 0 && bits[bit] != 1) { + PrintAndLog("oops1 at %d", bit); + } + if (sum < 0 && bits[bit] != 0) { + PrintAndLog("oops2 at %d", bit); + } + } + + GraphTraceLen = 32*64; + i = 0; + int phase = 0; + for (bit = 0; bit < 64; bit++) { + if (bits[bit] == 0) { + phase = 0; + } else { + phase = 1; + } + int j; + for (j = 0; j < 32; j++) { + GraphBuffer[i++] = phase; + phase = !phase; + } + } + + RepaintGraphWindow(); + return 0; } - + int CmdIndalaDemod(const char *Cmd) { - // Usage: recover 64bit UID by default, specify "224" as arg to recover a 224bit UID - - int state = -1; - int count = 0; - int i, j; - // worst case with GraphTraceLen=64000 is < 4096 - // under normal conditions it's < 2048 - uint8_t rawbits[4096]; - int rawbit = 0; - int worst = 0, worstPos = 0; + // Usage: recover 64bit UID by default, specify "224" as arg to recover a 224bit UID + + int state = -1; + int count = 0; + int i, j; + // worst case with GraphTraceLen=64000 is < 4096 + // under normal conditions it's < 2048 + uint8_t rawbits[4096]; + int rawbit = 0; + int worst = 0, worstPos = 0; // PrintAndLog("Expecting a bit less than %d raw bits", GraphTraceLen / 32); - for (i = 0; i < GraphTraceLen-1; i += 2) { - count += 1; - if ((GraphBuffer[i] > GraphBuffer[i + 1]) && (state != 1)) { - if (state == 0) { - for (j = 0; j < count - 8; j += 16) { - rawbits[rawbit++] = 0; - } - if ((abs(count - j)) > worst) { - worst = abs(count - j); - worstPos = i; - } - } - state = 1; - count = 0; - } else if ((GraphBuffer[i] < GraphBuffer[i + 1]) && (state != 0)) { - if (state == 1) { - for (j = 0; j < count - 8; j += 16) { - rawbits[rawbit++] = 1; - } - if ((abs(count - j)) > worst) { - worst = abs(count - j); - worstPos = i; - } - } - state = 0; - count = 0; - } - } - if (rawbit>0){ - PrintAndLog("Recovered %d raw bits, expected: %d", rawbit, GraphTraceLen/32); - PrintAndLog("worst metric (0=best..7=worst): %d at pos %d", worst, worstPos); - } else return 0; - // Finding the start of a UID - int uidlen, long_wait; - if (strcmp(Cmd, "224") == 0) { - uidlen = 224; - long_wait = 30; - } else { - uidlen = 64; - long_wait = 29; - } - int start; - int first = 0; - for (start = 0; start <= rawbit - uidlen; start++) { - first = rawbits[start]; - for (i = start; i < start + long_wait; i++) { - if (rawbits[i] != first) { - break; - } - } - if (i == (start + long_wait)) { - break; - } - } - if (start == rawbit - uidlen + 1) { - PrintAndLog("nothing to wait for"); - return 0; - } - - // Inverting signal if needed - if (first == 1) { - for (i = start; i < rawbit; i++) { - rawbits[i] = !rawbits[i]; - } - } - - // Dumping UID - uint8_t bits[224]; - char showbits[225]; - showbits[uidlen]='\0'; - int bit; - i = start; - int times = 0; - if (uidlen > rawbit) { - PrintAndLog("Warning: not enough raw bits to get a full UID"); - for (bit = 0; bit < rawbit; bit++) { - bits[bit] = rawbits[i++]; - // As we cannot know the parity, let's use "." and "/" - showbits[bit] = '.' + bits[bit]; - } - showbits[bit+1]='\0'; - PrintAndLog("Partial UID=%s", showbits); - return 0; - } else { - for (bit = 0; bit < uidlen; bit++) { - bits[bit] = rawbits[i++]; - showbits[bit] = '0' + bits[bit]; - } - times = 1; - } - - //convert UID to HEX - uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7; - int idx; - uid1=0; - uid2=0; - if (uidlen==64){ - for( idx=0; idx<64; idx++) { - if (showbits[idx] == '0') { - uid1=(uid1<<1)|(uid2>>31); - uid2=(uid2<<1)|0; - } else { - uid1=(uid1<<1)|(uid2>>31); - uid2=(uid2<<1)|1; - } - } - PrintAndLog("UID=%s (%x%08x)", showbits, uid1, uid2); - } - else { - uid3=0; - uid4=0; - uid5=0; - uid6=0; - uid7=0; - for( idx=0; idx<224; idx++) { - uid1=(uid1<<1)|(uid2>>31); - uid2=(uid2<<1)|(uid3>>31); - uid3=(uid3<<1)|(uid4>>31); - uid4=(uid4<<1)|(uid5>>31); - uid5=(uid5<<1)|(uid6>>31); - uid6=(uid6<<1)|(uid7>>31); - if (showbits[idx] == '0') uid7=(uid7<<1)|0; - else uid7=(uid7<<1)|1; - } - PrintAndLog("UID=%s (%x%08x%08x%08x%08x%08x%08x)", showbits, uid1, uid2, uid3, uid4, uid5, uid6, uid7); - } - - // Checking UID against next occurrences - for (; i + uidlen <= rawbit;) { - int failed = 0; - for (bit = 0; bit < uidlen; bit++) { - if (bits[bit] != rawbits[i++]) { - failed = 1; - break; - } - } - if (failed == 1) { - break; - } - times += 1; - } - PrintAndLog("Occurrences: %d (expected %d)", times, (rawbit - start) / uidlen); - - // Remodulating for tag cloning - GraphTraceLen = 32*uidlen; - i = 0; - int phase = 0; - for (bit = 0; bit < uidlen; bit++) { - if (bits[bit] == 0) { - phase = 0; - } else { - phase = 1; - } - int j; - for (j = 0; j < 32; j++) { - GraphBuffer[i++] = phase; - phase = !phase; - } - } - - RepaintGraphWindow(); - return 1; + for (i = 0; i < GraphTraceLen-1; i += 2) { + count += 1; + if ((GraphBuffer[i] > GraphBuffer[i + 1]) && (state != 1)) { + if (state == 0) { + for (j = 0; j < count - 8; j += 16) { + rawbits[rawbit++] = 0; + } + if ((abs(count - j)) > worst) { + worst = abs(count - j); + worstPos = i; + } + } + state = 1; + count = 0; + } else if ((GraphBuffer[i] < GraphBuffer[i + 1]) && (state != 0)) { + if (state == 1) { + for (j = 0; j < count - 8; j += 16) { + rawbits[rawbit++] = 1; + } + if ((abs(count - j)) > worst) { + worst = abs(count - j); + worstPos = i; + } + } + state = 0; + count = 0; + } + } + if (rawbit>0){ + PrintAndLog("Recovered %d raw bits, expected: %d", rawbit, GraphTraceLen/32); + PrintAndLog("worst metric (0=best..7=worst): %d at pos %d", worst, worstPos); + } else return 0; + // Finding the start of a UID + int uidlen, long_wait; + if (strcmp(Cmd, "224") == 0) { + uidlen = 224; + long_wait = 30; + } else { + uidlen = 64; + long_wait = 29; + } + int start; + int first = 0; + for (start = 0; start <= rawbit - uidlen; start++) { + first = rawbits[start]; + for (i = start; i < start + long_wait; i++) { + if (rawbits[i] != first) { + break; + } + } + if (i == (start + long_wait)) { + break; + } + } + if (start == rawbit - uidlen + 1) { + PrintAndLog("nothing to wait for"); + return 0; + } + + // Inverting signal if needed + if (first == 1) { + for (i = start; i < rawbit; i++) { + rawbits[i] = !rawbits[i]; + } + } + + // Dumping UID + uint8_t bits[224]; + char showbits[225]; + showbits[uidlen]='\0'; + int bit; + i = start; + int times = 0; + if (uidlen > rawbit) { + PrintAndLog("Warning: not enough raw bits to get a full UID"); + for (bit = 0; bit < rawbit; bit++) { + bits[bit] = rawbits[i++]; + // As we cannot know the parity, let's use "." and "/" + showbits[bit] = '.' + bits[bit]; + } + showbits[bit+1]='\0'; + PrintAndLog("Partial UID=%s", showbits); + return 0; + } else { + for (bit = 0; bit < uidlen; bit++) { + bits[bit] = rawbits[i++]; + showbits[bit] = '0' + bits[bit]; + } + times = 1; + } + + //convert UID to HEX + uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7; + int idx; + uid1=0; + uid2=0; + if (uidlen==64){ + for( idx=0; idx<64; idx++) { + if (showbits[idx] == '0') { + uid1=(uid1<<1)|(uid2>>31); + uid2=(uid2<<1)|0; + } else { + uid1=(uid1<<1)|(uid2>>31); + uid2=(uid2<<1)|1; + } + } + PrintAndLog("UID=%s (%x%08x)", showbits, uid1, uid2); + } + else { + uid3=0; + uid4=0; + uid5=0; + uid6=0; + uid7=0; + for( idx=0; idx<224; idx++) { + uid1=(uid1<<1)|(uid2>>31); + uid2=(uid2<<1)|(uid3>>31); + uid3=(uid3<<1)|(uid4>>31); + uid4=(uid4<<1)|(uid5>>31); + uid5=(uid5<<1)|(uid6>>31); + uid6=(uid6<<1)|(uid7>>31); + if (showbits[idx] == '0') uid7=(uid7<<1)|0; + else uid7=(uid7<<1)|1; + } + PrintAndLog("UID=%s (%x%08x%08x%08x%08x%08x%08x)", showbits, uid1, uid2, uid3, uid4, uid5, uid6, uid7); + } + + // Checking UID against next occurrences + for (; i + uidlen <= rawbit;) { + int failed = 0; + for (bit = 0; bit < uidlen; bit++) { + if (bits[bit] != rawbits[i++]) { + failed = 1; + break; + } + } + if (failed == 1) { + break; + } + times += 1; + } + PrintAndLog("Occurrences: %d (expected %d)", times, (rawbit - start) / uidlen); + + // Remodulating for tag cloning + GraphTraceLen = 32*uidlen; + i = 0; + int phase = 0; + for (bit = 0; bit < uidlen; bit++) { + if (bits[bit] == 0) { + phase = 0; + } else { + phase = 1; + } + int j; + for (j = 0; j < 32; j++) { + GraphBuffer[i++] = phase; + phase = !phase; + } + } + + RepaintGraphWindow(); + return 1; } int CmdIndalaClone(const char *Cmd) { - unsigned int uid1, uid2, uid3, uid4, uid5, uid6, uid7; - UsbCommand c; - uid1=0; - uid2=0; - uid3=0; - uid4=0; - uid5=0; - uid6=0; - uid7=0; - int n = 0, i = 0; - - if (strchr(Cmd,'l') != 0) { - while (sscanf(&Cmd[i++], "%1x", &n ) == 1) { - uid1 = (uid1 << 4) | (uid2 >> 28); - uid2 = (uid2 << 4) | (uid3 >> 28); - uid3 = (uid3 << 4) | (uid4 >> 28); - uid4 = (uid4 << 4) | (uid5 >> 28); - uid5 = (uid5 << 4) | (uid6 >> 28); - uid6 = (uid6 << 4) | (uid7 >> 28); - uid7 = (uid7 << 4) | (n & 0xf); - } - PrintAndLog("Cloning 224bit tag with UID %x%08x%08x%08x%08x%08x%08x", uid1, uid2, uid3, uid4, uid5, uid6, uid7); - c.cmd = CMD_INDALA_CLONE_TAG_L; - c.d.asDwords[0] = uid1; - c.d.asDwords[1] = uid2; - c.d.asDwords[2] = uid3; - c.d.asDwords[3] = uid4; - c.d.asDwords[4] = uid5; - c.d.asDwords[5] = uid6; - c.d.asDwords[6] = uid7; - } - else - { - while (sscanf(&Cmd[i++], "%1x", &n ) == 1) { - uid1 = (uid1 << 4) | (uid2 >> 28); - uid2 = (uid2 << 4) | (n & 0xf); - } - PrintAndLog("Cloning 64bit tag with UID %x%08x", uid1, uid2); - c.cmd = CMD_INDALA_CLONE_TAG; - c.arg[0] = uid1; - c.arg[1] = uid2; - } - - SendCommand(&c); - return 0; + unsigned int uid1, uid2, uid3, uid4, uid5, uid6, uid7; + UsbCommand c; + uid1=0; + uid2=0; + uid3=0; + uid4=0; + uid5=0; + uid6=0; + uid7=0; + int n = 0, i = 0; + + if (strchr(Cmd,'l') != 0) { + while (sscanf(&Cmd[i++], "%1x", &n ) == 1) { + uid1 = (uid1 << 4) | (uid2 >> 28); + uid2 = (uid2 << 4) | (uid3 >> 28); + uid3 = (uid3 << 4) | (uid4 >> 28); + uid4 = (uid4 << 4) | (uid5 >> 28); + uid5 = (uid5 << 4) | (uid6 >> 28); + uid6 = (uid6 << 4) | (uid7 >> 28); + uid7 = (uid7 << 4) | (n & 0xf); + } + PrintAndLog("Cloning 224bit tag with UID %x%08x%08x%08x%08x%08x%08x", uid1, uid2, uid3, uid4, uid5, uid6, uid7); + c.cmd = CMD_INDALA_CLONE_TAG_L; + c.d.asDwords[0] = uid1; + c.d.asDwords[1] = uid2; + c.d.asDwords[2] = uid3; + c.d.asDwords[3] = uid4; + c.d.asDwords[4] = uid5; + c.d.asDwords[5] = uid6; + c.d.asDwords[6] = uid7; + } + else + { + while (sscanf(&Cmd[i++], "%1x", &n ) == 1) { + uid1 = (uid1 << 4) | (uid2 >> 28); + uid2 = (uid2 << 4) | (n & 0xf); + } + PrintAndLog("Cloning 64bit tag with UID %x%08x", uid1, uid2); + c.cmd = CMD_INDALA_CLONE_TAG; + c.arg[0] = uid1; + c.arg[1] = uid2; + } + + SendCommand(&c); + return 0; } int CmdLFRead(const char *Cmd) { - UsbCommand c = {CMD_ACQUIRE_RAW_ADC_SAMPLES_125K}; - // 'h' means higher-low-frequency, 134 kHz - if(*Cmd == 'h') { - c.arg[0] = 1; - } else if (*Cmd == '\0') { - c.arg[0] = 0; - } else if (sscanf(Cmd, "%"lli, &c.arg[0]) != 1) { - PrintAndLog("use 'read' or 'read h', or 'read '"); - return 0; - } - SendCommand(&c); - WaitForResponse(CMD_ACK,NULL); - return 0; + UsbCommand c = {CMD_ACQUIRE_RAW_ADC_SAMPLES_125K}; + // 'h' means higher-low-frequency, 134 kHz + if(*Cmd == 'h') { + c.arg[0] = 1; + } else if (*Cmd == '\0') { + c.arg[0] = 0; + } else if (sscanf(Cmd, "%"lli, &c.arg[0]) != 1) { + PrintAndLog("use 'read' or 'read h', or 'read '"); + return 0; + } + SendCommand(&c); + WaitForResponse(CMD_ACK,NULL); + return 0; } static void ChkBitstream(const char *str) { - int i; - - /* convert to bitstream if necessary */ - for (i = 0; i < (int)(GraphTraceLen / 2); i++) - { - if (GraphBuffer[i] > 1 || GraphBuffer[i] < 0) - { - CmdBitstream(str); - break; - } - } + int i; + + /* convert to bitstream if necessary */ + for (i = 0; i < (int)(GraphTraceLen / 2); i++) + { + if (GraphBuffer[i] > 1 || GraphBuffer[i] < 0) + { + CmdBitstream(str); + break; + } + } } int CmdLFSim(const char *Cmd) { - int i; - static int gap; - - sscanf(Cmd, "%i", &gap); - - /* convert to bitstream if necessary */ - ChkBitstream(Cmd); - - PrintAndLog("Sending data, please wait..."); - for (i = 0; i < GraphTraceLen; i += 48) { - UsbCommand c={CMD_DOWNLOADED_SIM_SAMPLES_125K, {i, 0, 0}}; - int j; - for (j = 0; j < 48; j++) { - c.d.asBytes[j] = GraphBuffer[i+j]; - } - SendCommand(&c); - WaitForResponse(CMD_ACK,NULL); - } - - PrintAndLog("Starting simulator..."); - UsbCommand c = {CMD_SIMULATE_TAG_125K, {GraphTraceLen, gap, 0}}; - SendCommand(&c); - return 0; + int i; + static int gap; + + sscanf(Cmd, "%i", &gap); + + /* convert to bitstream if necessary */ + ChkBitstream(Cmd); + + PrintAndLog("Sending data, please wait..."); + for (i = 0; i < GraphTraceLen; i += 48) { + UsbCommand c={CMD_DOWNLOADED_SIM_SAMPLES_125K, {i, 0, 0}}; + int j; + for (j = 0; j < 48; j++) { + c.d.asBytes[j] = GraphBuffer[i+j]; + } + SendCommand(&c); + WaitForResponse(CMD_ACK,NULL); + } + + PrintAndLog("Starting simulator..."); + UsbCommand c = {CMD_SIMULATE_TAG_125K, {GraphTraceLen, gap, 0}}; + SendCommand(&c); + return 0; } int CmdLFSimBidir(const char *Cmd) { - /* Set ADC to twice the carrier for a slight supersampling */ - UsbCommand c = {CMD_LF_SIMULATE_BIDIR, {47, 384, 0}}; - SendCommand(&c); - return 0; + /* Set ADC to twice the carrier for a slight supersampling */ + UsbCommand c = {CMD_LF_SIMULATE_BIDIR, {47, 384, 0}}; + SendCommand(&c); + return 0; } /* simulate an LF Manchester encoded tag with specified bitstream, clock rate and inter-id gap */ int CmdLFSimManchester(const char *Cmd) { - static int clock, gap; - static char data[1024], gapstring[8]; + static int clock, gap; + static char data[1024], gapstring[8]; - /* get settings/bits */ - sscanf(Cmd, "%i %s %i", &clock, &data[0], &gap); + /* get settings/bits */ + sscanf(Cmd, "%i %s %i", &clock, &data[0], &gap); - /* clear our graph */ - ClearGraph(0); + /* clear our graph */ + ClearGraph(0); - /* fill it with our bitstream */ - for (int i = 0; i < strlen(data) ; ++i) - AppendGraph(0, clock, data[i]- '0'); + /* fill it with our bitstream */ + for (int i = 0; i < strlen(data) ; ++i) + AppendGraph(0, clock, data[i]- '0'); - /* modulate */ - CmdManchesterMod(""); + /* modulate */ + CmdManchesterMod(""); - /* show what we've done */ - RepaintGraphWindow(); + /* show what we've done */ + RepaintGraphWindow(); - /* simulate */ - sprintf(&gapstring[0], "%i", gap); - CmdLFSim(gapstring); - return 0; + /* simulate */ + sprintf(&gapstring[0], "%i", gap); + CmdLFSim(gapstring); + return 0; } int CmdLFSnoop(const char *Cmd) { - UsbCommand c = {CMD_LF_SNOOP_RAW_ADC_SAMPLES}; - // 'h' means higher-low-frequency, 134 kHz - c.arg[0] = 0; - c.arg[1] = -1; - if (*Cmd == 0) { - // empty - } else if (*Cmd == 'l') { - sscanf(Cmd, "l %"lli, &c.arg[1]); - } else if(*Cmd == 'h') { - c.arg[0] = 1; - sscanf(Cmd, "h %"lli, &c.arg[1]); - } else if (sscanf(Cmd, "%"lli" %"lli, &c.arg[0], &c.arg[1]) < 1) { - PrintAndLog("use 'snoop' or 'snoop {l,h} [trigger threshold]', or 'snoop [trigger threshold]'"); - return 0; - } - SendCommand(&c); - WaitForResponse(CMD_ACK,NULL); - return 0; + UsbCommand c = {CMD_LF_SNOOP_RAW_ADC_SAMPLES}; + // 'h' means higher-low-frequency, 134 kHz + c.arg[0] = 0; + c.arg[1] = -1; + if (*Cmd == 0) { + // empty + } else if (*Cmd == 'l') { + sscanf(Cmd, "l %"lli, &c.arg[1]); + } else if(*Cmd == 'h') { + c.arg[0] = 1; + sscanf(Cmd, "h %"lli, &c.arg[1]); + } else if (sscanf(Cmd, "%"lli" %"lli, &c.arg[0], &c.arg[1]) < 1) { + PrintAndLog("use 'snoop' or 'snoop {l,h} [trigger threshold]', or 'snoop [trigger threshold]'"); + return 0; + } + SendCommand(&c); + WaitForResponse(CMD_ACK,NULL); + return 0; } int CmdVchDemod(const char *Cmd) { - // Is this the entire sync pattern, or does this also include some - // data bits that happen to be the same everywhere? That would be - // lovely to know. - static const int SyncPattern[] = { - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - }; - - // So first, we correlate for the sync pattern, and mark that. - int bestCorrel = 0, bestPos = 0; - int i; - // It does us no good to find the sync pattern, with fewer than - // 2048 samples after it... - for (i = 0; i < (GraphTraceLen-2048); i++) { - int sum = 0; - int j; - for (j = 0; j < arraylen(SyncPattern); j++) { - sum += GraphBuffer[i+j]*SyncPattern[j]; - } - if (sum > bestCorrel) { - bestCorrel = sum; - bestPos = i; - } - } - PrintAndLog("best sync at %d [metric %d]", bestPos, bestCorrel); - - char bits[257]; - bits[256] = '\0'; - - int worst = INT_MAX; - int worstPos = 0; - - for (i = 0; i < 2048; i += 8) { - int sum = 0; - int j; - for (j = 0; j < 8; j++) { - sum += GraphBuffer[bestPos+i+j]; - } - if (sum < 0) { - bits[i/8] = '.'; - } else { - bits[i/8] = '1'; - } - if(abs(sum) < worst) { - worst = abs(sum); - worstPos = i; - } - } - PrintAndLog("bits:"); - PrintAndLog("%s", bits); - PrintAndLog("worst metric: %d at pos %d", worst, worstPos); - - if (strcmp(Cmd, "clone")==0) { - GraphTraceLen = 0; - char *s; - for(s = bits; *s; s++) { - int j; - for(j = 0; j < 16; j++) { - GraphBuffer[GraphTraceLen++] = (*s == '1') ? 1 : 0; - } - } - RepaintGraphWindow(); - } - return 0; + // Is this the entire sync pattern, or does this also include some + // data bits that happen to be the same everywhere? That would be + // lovely to know. + static const int SyncPattern[] = { + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + }; + + // So first, we correlate for the sync pattern, and mark that. + int bestCorrel = 0, bestPos = 0; + int i; + // It does us no good to find the sync pattern, with fewer than + // 2048 samples after it... + for (i = 0; i < (GraphTraceLen-2048); i++) { + int sum = 0; + int j; + for (j = 0; j < arraylen(SyncPattern); j++) { + sum += GraphBuffer[i+j]*SyncPattern[j]; + } + if (sum > bestCorrel) { + bestCorrel = sum; + bestPos = i; + } + } + PrintAndLog("best sync at %d [metric %d]", bestPos, bestCorrel); + + char bits[257]; + bits[256] = '\0'; + + int worst = INT_MAX; + int worstPos = 0; + + for (i = 0; i < 2048; i += 8) { + int sum = 0; + int j; + for (j = 0; j < 8; j++) { + sum += GraphBuffer[bestPos+i+j]; + } + if (sum < 0) { + bits[i/8] = '.'; + } else { + bits[i/8] = '1'; + } + if(abs(sum) < worst) { + worst = abs(sum); + worstPos = i; + } + } + PrintAndLog("bits:"); + PrintAndLog("%s", bits); + PrintAndLog("worst metric: %d at pos %d", worst, worstPos); + + if (strcmp(Cmd, "clone")==0) { + GraphTraceLen = 0; + char *s; + for(s = bits; *s; s++) { + int j; + for(j = 0; j < 16; j++) { + GraphBuffer[GraphTraceLen++] = (*s == '1') ? 1 : 0; + } + } + RepaintGraphWindow(); + } + return 0; } //by marshmellow int CmdLFfind(const char *Cmd) { - int ans=0; - if (!offline){ - ans=CmdLFRead(""); - ans=CmdSamples("20000"); - } - if (GraphTraceLen<1000) return 0; - PrintAndLog("NOTE: some demods output possible binary\n if it finds something that looks like a tag"); - PrintAndLog("Checking for known tags:"); - - ans=Cmdaskmandemod(""); - if (ans>0) { - PrintAndLog("Valid EM410x ID Found!"); - return 1; - } - ans=CmdFSKdemodHID(""); - if (ans>0) { - PrintAndLog("Valid HID Prox ID Found!"); - return 1; - } - ans=CmdFSKdemodIO(""); - if (ans>0) { - PrintAndLog("Valid IO Prox ID Found!"); - return 1; - } - //add psk and indala - ans=CmdIndalaDecode(""); - if (ans>0) { - PrintAndLog("Valid Indala ID Found!"); - return 1; - } + int ans=0; + if (!offline){ + ans=CmdLFRead(""); + ans=CmdSamples("20000"); + } + if (GraphTraceLen<1000) return 0; + PrintAndLog("NOTE: some demods output possible binary\n if it finds something that looks like a tag"); + PrintAndLog("Checking for known tags:"); + + ans=Cmdaskmandemod(""); + if (ans>0) { + PrintAndLog("Valid EM410x ID Found!"); + return 1; + } + ans=CmdFSKdemodHID(""); + if (ans>0) { + PrintAndLog("Valid HID Prox ID Found!"); + return 1; + } + ans=CmdFSKdemodIO(""); + if (ans>0) { + PrintAndLog("Valid IO Prox ID Found!"); + return 1; + } + //add psk and indala + ans=CmdIndalaDecode(""); + if (ans>0) { + PrintAndLog("Valid Indala ID Found!"); + return 1; + } // ans=CmdIndalaDemod("224"); // if (ans>0) return 1; - PrintAndLog("No Known Tags Found!\n"); - return 0; + PrintAndLog("No Known Tags Found!\n"); + return 0; } static command_t CommandTable[] = { - {"help", CmdHelp, 1, "This help"}, - {"cmdread", CmdLFCommandRead, 0, " <'0' period> <'1' period> ['h'] -- Modulate LF reader field to send command before read (all periods in microseconds) (option 'h' for 134)"}, - {"em4x", CmdLFEM4X, 1, "{ EM4X RFIDs... }"}, - {"flexdemod", CmdFlexdemod, 1, "Demodulate samples for FlexPass"}, - {"hid", CmdLFHID, 1, "{ HID RFIDs... }"}, - {"io", CmdLFIO, 1, "{ ioProx tags... }"}, - {"indalademod", CmdIndalaDemod, 1, "['224'] -- Demodulate samples for Indala 64 bit UID (option '224' for 224 bit)"}, - {"indalaclone", CmdIndalaClone, 0, " ['l']-- Clone Indala to T55x7 (tag must be in antenna)(UID in HEX)(option 'l' for 224 UID"}, - {"read", CmdLFRead, 0, "['h' or ] -- Read 125/134 kHz LF ID-only tag (option 'h' for 134, alternatively: f=12MHz/(divisor+1))"}, - {"search", CmdLFfind, 1, "Read and Search for valid known tag (in offline mode it you can load first then search)"}, - {"sim", CmdLFSim, 0, "[GAP] -- Simulate LF tag from buffer with optional GAP (in microseconds)"}, - {"simbidir", CmdLFSimBidir, 0, "Simulate LF tag (with bidirectional data transmission between reader and tag)"}, - {"simman", CmdLFSimManchester, 0, " [GAP] Simulate arbitrary Manchester LF tag"}, - {"snoop", CmdLFSnoop, 0, "['l'|'h'|] [trigger threshold]-- Snoop LF (l:125khz, h:134khz)"}, - {"ti", CmdLFTI, 1, "{ TI RFIDs... }"}, - {"hitag", CmdLFHitag, 1, "{ Hitag tags and transponders... }"}, - {"vchdemod", CmdVchDemod, 1, "['clone'] -- Demodulate samples for VeriChip"}, - {"t55xx", CmdLFT55XX, 1, "{ T55xx RFIDs... }"}, - {"pcf7931", CmdLFPCF7931, 1, "{PCF7931 RFIDs...}"}, - {NULL, NULL, 0, NULL} + {"help", CmdHelp, 1, "This help"}, + {"cmdread", CmdLFCommandRead, 0, " <'0' period> <'1' period> ['h'] -- Modulate LF reader field to send command before read (all periods in microseconds) (option 'h' for 134)"}, + {"em4x", CmdLFEM4X, 1, "{ EM4X RFIDs... }"}, + {"flexdemod", CmdFlexdemod, 1, "Demodulate samples for FlexPass"}, + {"hid", CmdLFHID, 1, "{ HID RFIDs... }"}, + {"io", CmdLFIO, 1, "{ ioProx tags... }"}, + {"indalademod", CmdIndalaDemod, 1, "['224'] -- Demodulate samples for Indala 64 bit UID (option '224' for 224 bit)"}, + {"indalaclone", CmdIndalaClone, 0, " ['l']-- Clone Indala to T55x7 (tag must be in antenna)(UID in HEX)(option 'l' for 224 UID"}, + {"read", CmdLFRead, 0, "['h' or ] -- Read 125/134 kHz LF ID-only tag (option 'h' for 134, alternatively: f=12MHz/(divisor+1))"}, + {"search", CmdLFfind, 1, "Read and Search for valid known tag (in offline mode it you can load first then search)"}, + {"sim", CmdLFSim, 0, "[GAP] -- Simulate LF tag from buffer with optional GAP (in microseconds)"}, + {"simbidir", CmdLFSimBidir, 0, "Simulate LF tag (with bidirectional data transmission between reader and tag)"}, + {"simman", CmdLFSimManchester, 0, " [GAP] Simulate arbitrary Manchester LF tag"}, + {"snoop", CmdLFSnoop, 0, "['l'|'h'|] [trigger threshold]-- Snoop LF (l:125khz, h:134khz)"}, + {"ti", CmdLFTI, 1, "{ TI RFIDs... }"}, + {"hitag", CmdLFHitag, 1, "{ Hitag tags and transponders... }"}, + {"vchdemod", CmdVchDemod, 1, "['clone'] -- Demodulate samples for VeriChip"}, + {"t55xx", CmdLFT55XX, 1, "{ T55xx RFIDs... }"}, + {"pcf7931", CmdLFPCF7931, 1, "{PCF7931 RFIDs...}"}, + {NULL, NULL, 0, NULL} }; int CmdLF(const char *Cmd) { - CmdsParse(CommandTable, Cmd); - return 0; + CmdsParse(CommandTable, Cmd); + return 0; } int CmdHelp(const char *Cmd) { - CmdsHelp(CommandTable); - return 0; + CmdsHelp(CommandTable); + return 0; } diff --git a/client/graph.c b/client/graph.c index d63c4271..f41568e4 100644 --- a/client/graph.c +++ b/client/graph.c @@ -20,61 +20,61 @@ int GraphTraceLen; /* write a bit to the graph */ void AppendGraph(int redraw, int clock, int bit) { - int i; + int i; - for (i = 0; i < (int)(clock / 2); ++i) - GraphBuffer[GraphTraceLen++] = bit ^ 1; - - for (i = (int)(clock / 2); i < clock; ++i) - GraphBuffer[GraphTraceLen++] = bit; + for (i = 0; i < (int)(clock / 2); ++i) + GraphBuffer[GraphTraceLen++] = bit ^ 1; - if (redraw) - RepaintGraphWindow(); + for (i = (int)(clock / 2); i < clock; ++i) + GraphBuffer[GraphTraceLen++] = bit; + + if (redraw) + RepaintGraphWindow(); } /* clear out our graph window */ int ClearGraph(int redraw) { - int gtl = GraphTraceLen; - GraphTraceLen = 0; + int gtl = GraphTraceLen; + GraphTraceLen = 0; - if (redraw) - RepaintGraphWindow(); + if (redraw) + RepaintGraphWindow(); - return gtl; + return gtl; } /* * Detect clock rate */ - //decommissioned - has difficulty detecting rf/32 + //decommissioned - has difficulty detecting rf/32 /* int DetectClockOld(int peak) { - int i; - int clock = 0xFFFF; - int lastpeak = 0; + int i; + int clock = 0xFFFF; + int lastpeak = 0; - // Detect peak if we don't have one - if (!peak) - for (i = 0; i < GraphTraceLen; ++i) - if (GraphBuffer[i] > peak) - peak = GraphBuffer[i]; + // Detect peak if we don't have one + if (!peak) + for (i = 0; i < GraphTraceLen; ++i) + if (GraphBuffer[i] > peak) + peak = GraphBuffer[i]; // peak=(int)(peak*.75); - for (i = 1; i < GraphTraceLen; ++i) - { - // If this is the beginning of a peak - if (GraphBuffer[i - 1] != GraphBuffer[i] && GraphBuffer[i] >= peak) - { - // Find lowest difference between peaks - if (lastpeak && i - lastpeak < clock) - clock = i - lastpeak; - lastpeak = i; - } - } - - return clock; + for (i = 1; i < GraphTraceLen; ++i) + { + // If this is the beginning of a peak + if (GraphBuffer[i - 1] != GraphBuffer[i] && GraphBuffer[i] >= peak) + { + // Find lowest difference between peaks + if (lastpeak && i - lastpeak < clock) + clock = i - lastpeak; + lastpeak = i; + } + } + + return clock; } */ /* @@ -85,155 +85,155 @@ NOW IN LFDEMOD.C // maybe somehow adjust peak trimming value based on samples to fix? int DetectASKClock(int peak) { - int i=0; - int low=0; - int clk[]={16,32,40,50,64,100,128,256}; - int loopCnt = 256; - if (GraphTraceLenpeak){ - peak = GraphBuffer[i]; - } - if(GraphBuffer[i]=peak) || (GraphBuffer[ii]<=low)){ - errCnt[clkCnt]=0; - for (i=0; i<((int)(GraphTraceLen/clk[clkCnt])-1); ++i){ - if (GraphBuffer[ii+(i*clk[clkCnt])]>=peak || GraphBuffer[ii+(i*clk[clkCnt])]<=low){ - }else if(GraphBuffer[ii+(i*clk[clkCnt])-tol]>=peak || GraphBuffer[ii+(i*clk[clkCnt])-tol]<=low){ - }else if(GraphBuffer[ii+(i*clk[clkCnt])+tol]>=peak || GraphBuffer[ii+(i*clk[clkCnt])+tol]<=low){ - }else{ //error no peak detected - errCnt[clkCnt]++; - } - } - if(errCnt[clkCnt]==0) return clk[clkCnt]; - if(errCnt[clkCnt]peak){ + peak = GraphBuffer[i]; + } + if(GraphBuffer[i]=peak) || (GraphBuffer[ii]<=low)){ + errCnt[clkCnt]=0; + for (i=0; i<((int)(GraphTraceLen/clk[clkCnt])-1); ++i){ + if (GraphBuffer[ii+(i*clk[clkCnt])]>=peak || GraphBuffer[ii+(i*clk[clkCnt])]<=low){ + }else if(GraphBuffer[ii+(i*clk[clkCnt])-tol]>=peak || GraphBuffer[ii+(i*clk[clkCnt])-tol]<=low){ + }else if(GraphBuffer[ii+(i*clk[clkCnt])+tol]>=peak || GraphBuffer[ii+(i*clk[clkCnt])+tol]<=low){ + }else{ //error no peak detected + errCnt[clkCnt]++; + } + } + if(errCnt[clkCnt]==0) return clk[clkCnt]; + if(errCnt[clkCnt]127) GraphBuffer[i]=127; //trim - if (GraphBuffer[i]<-127) GraphBuffer[i]=-127; //trim - buff[i]=(uint8_t)(GraphBuffer[i]+128); - } - return i; + uint32_t i; + for (i=0;i127) GraphBuffer[i]=127; //trim + if (GraphBuffer[i]<-127) GraphBuffer[i]=-127; //trim + buff[i]=(uint8_t)(GraphBuffer[i]+128); + } + return i; } /* Get or auto-detect clock rate */ int GetClock(const char *str, int peak, int verbose) { - int clock; + int clock; // int clock2; - sscanf(str, "%i", &clock); - if (!strcmp(str, "")) - clock = 0; - - /* Auto-detect clock */ - if (!clock) - { - uint8_t grph[MAX_GRAPH_TRACE_LEN]={0}; - int size = getFromGraphBuf(grph); - clock = DetectASKClock(grph,size,0); - //clock2 = DetectClock2(peak); - /* Only print this message if we're not looping something */ - if (!verbose){ - PrintAndLog("Auto-detected clock rate: %d", clock); - //PrintAndLog("clock2: %d",clock2); - } - } - - return clock; + sscanf(str, "%i", &clock); + if (!strcmp(str, "")) + clock = 0; + + /* Auto-detect clock */ + if (!clock) + { + uint8_t grph[MAX_GRAPH_TRACE_LEN]={0}; + size_t size = getFromGraphBuf(grph); + clock = DetectASKClock(grph,size,0); + //clock2 = DetectClock2(peak); + /* Only print this message if we're not looping something */ + if (!verbose){ + PrintAndLog("Auto-detected clock rate: %d", clock); + //PrintAndLog("clock2: %d",clock2); + } + } + + return clock; } int GetNRZpskClock(const char *str, int peak, int verbose) { // return GetClock(str,peak,verbose); - int clock; - // int clock2; - sscanf(str, "%i", &clock); - if (!strcmp(str, "")) - clock = 0; - - /* Auto-detect clock */ - if (!clock) - { - uint8_t grph[MAX_GRAPH_TRACE_LEN]={0}; - int size = getFromGraphBuf(grph); - clock = DetectpskNRZClock(grph,size,0); - //clock2 = DetectClock2(peak); - /* Only print this message if we're not looping something */ - if (!verbose){ - PrintAndLog("Auto-detected clock rate: %d", clock); - //PrintAndLog("clock2: %d",clock2); - } - } - return clock; + int clock; + // int clock2; + sscanf(str, "%i", &clock); + if (!strcmp(str, "")) + clock = 0; + + /* Auto-detect clock */ + if (!clock) + { + uint8_t grph[MAX_GRAPH_TRACE_LEN]={0}; + size_t size = getFromGraphBuf(grph); + clock = DetectpskNRZClock(grph,size,0); + //clock2 = DetectClock2(peak); + /* Only print this message if we're not looping something */ + if (!verbose){ + PrintAndLog("Auto-detected clock rate: %d", clock); + //PrintAndLog("clock2: %d",clock2); + } + } + return clock; } -// Get or auto-detect clock rate +// Get or auto-detect clock rate /* int GetNRZpskClock(const char *str, int peak, int verbose) { - int clock; + int clock; // int clock2; - sscanf(str, "%i", &clock); - if (!strcmp(str, "")) - clock = 0; - - // Auto-detect clock - if (!clock) - { - uint8_t grph[MAX_GRAPH_TRACE_LEN]={0}; - int size = getFromGraphBuf(grph); - clock = DetectASKClock(grph,size,0); - //clock2 = DetectClock2(peak); - // Only print this message if we're not looping something - if (!verbose){ - PrintAndLog("Auto-detected clock rate: %d", clock); - //PrintAndLog("clock2: %d",clock2); - } - } - return clock; + sscanf(str, "%i", &clock); + if (!strcmp(str, "")) + clock = 0; + + // Auto-detect clock + if (!clock) + { + uint8_t grph[MAX_GRAPH_TRACE_LEN]={0}; + int size = getFromGraphBuf(grph); + clock = DetectASKClock(grph,size,0); + //clock2 = DetectClock2(peak); + // Only print this message if we're not looping something + if (!verbose){ + PrintAndLog("Auto-detected clock rate: %d", clock); + //PrintAndLog("clock2: %d",clock2); + } + } + return clock; } -*/ \ No newline at end of file +*/ diff --git a/client/graph.h b/client/graph.h index c5c13798..1abeeb25 100644 --- a/client/graph.h +++ b/client/graph.h @@ -15,10 +15,10 @@ void AppendGraph(int redraw, int clock, int bit); int ClearGraph(int redraw); //int DetectClock(int peak); -int getFromGraphBuf(uint8_t *buff); +size_t getFromGraphBuf(uint8_t *buff); int GetClock(const char *str, int peak, int verbose); int GetNRZpskClock(const char *str, int peak, int verbose); -void setGraphBuf(uint8_t *buff,int size); +void setGraphBuf(uint8_t *buff, size_t size); #define MAX_GRAPH_TRACE_LEN (1024*128) extern int GraphBuffer[MAX_GRAPH_TRACE_LEN]; diff --git a/common/lfdemod.c b/common/lfdemod.c index 14478319..11ba131b 100644 --- a/common/lfdemod.c +++ b/common/lfdemod.c @@ -1,5 +1,5 @@ //----------------------------------------------------------------------------- -// Copyright (C) 2014 +// Copyright (C) 2014 // // This code is licensed to you under the terms of the GNU GPL, version 2 or, // at your option, any later version. See the LICENSE.txt file for the text of @@ -14,589 +14,588 @@ //by marshmellow //takes 1s and 0s and searches for EM410x format - output EM ID -uint64_t Em410xDecode(uint8_t *BitStream,uint32_t BitLen) +uint64_t Em410xDecode(uint8_t *BitStream, size_t size) { - //no arguments needed - built this way in case we want this to be a direct call from "data " cmds in the future - // otherwise could be a void with no arguments - //set defaults - int high=0, low=128; - uint64_t lo=0; //hi=0, - - uint32_t i = 0; - uint32_t initLoopMax = 65; - if (initLoopMax>BitLen) initLoopMax=BitLen; - - for (;i < initLoopMax; ++i) //65 samples should be plenty to find high and low values - { - if (BitStream[i] > high) - high = BitStream[i]; - else if (BitStream[i] < low) - low = BitStream[i]; - } - if (((high !=1)||(low !=0))){ //allow only 1s and 0s - // PrintAndLog("no data found"); - return 0; - } - uint8_t parityTest=0; - // 111111111 bit pattern represent start of frame - uint8_t frame_marker_mask[] = {1,1,1,1,1,1,1,1,1}; - uint32_t idx = 0; - uint32_t ii=0; - uint8_t resetCnt = 0; - while( (idx + 64) < BitLen) { -restart: - // search for a start of frame marker - if ( memcmp(BitStream+idx, frame_marker_mask, sizeof(frame_marker_mask)) == 0) - { // frame marker found - idx+=9;//sizeof(frame_marker_mask); - for (i=0; i<10;i++){ - for(ii=0; ii<5; ++ii){ - parityTest += BitStream[(i*5)+ii+idx]; - } - if (parityTest== ((parityTest>>1)<<1)){ - parityTest=0; - for (ii=0; ii<4;++ii){ - //hi = (hi<<1)|(lo>>31); - lo=(lo<<1LL)|(BitStream[(i*5)+ii+idx]); - } - //PrintAndLog("DEBUG: EM parity passed parity val: %d, i:%d, ii:%d,idx:%d, Buffer: %d%d%d%d%d,lo: %d",parityTest,i,ii,idx,BitStream[idx+ii+(i*5)-5],BitStream[idx+ii+(i*5)-4],BitStream[idx+ii+(i*5)-3],BitStream[idx+ii+(i*5)-2],BitStream[idx+ii+(i*5)-1],lo); - }else {//parity failed - //PrintAndLog("DEBUG: EM parity failed parity val: %d, i:%d, ii:%d,idx:%d, Buffer: %d%d%d%d%d",parityTest,i,ii,idx,BitStream[idx+ii+(i*5)-5],BitStream[idx+ii+(i*5)-4],BitStream[idx+ii+(i*5)-3],BitStream[idx+ii+(i*5)-2],BitStream[idx+ii+(i*5)-1]); - parityTest=0; - idx-=8; - if (resetCnt>5)return 0; - resetCnt++; - goto restart;//continue; - } - } - //skip last 5 bit parity test for simplicity. - return lo; - }else{ - idx++; - } - } - return 0; + //no arguments needed - built this way in case we want this to be a direct call from "data " cmds in the future + // otherwise could be a void with no arguments + //set defaults + int high=0, low=128; + uint64_t lo=0; //hi=0, + + uint32_t i = 0; + uint32_t initLoopMax = 65; + if (initLoopMax>size) initLoopMax=size; + + for (;i < initLoopMax; ++i) //65 samples should be plenty to find high and low values + { + if (BitStream[i] > high) + high = BitStream[i]; + else if (BitStream[i] < low) + low = BitStream[i]; + } + if (((high !=1)||(low !=0))){ //allow only 1s and 0s + // PrintAndLog("no data found"); + return 0; + } + uint8_t parityTest=0; + // 111111111 bit pattern represent start of frame + uint8_t frame_marker_mask[] = {1,1,1,1,1,1,1,1,1}; + uint32_t idx = 0; + uint32_t ii=0; + uint8_t resetCnt = 0; + while( (idx + 64) < size) { + restart: + // search for a start of frame marker + if ( memcmp(BitStream+idx, frame_marker_mask, sizeof(frame_marker_mask)) == 0) + { // frame marker found + idx+=9;//sizeof(frame_marker_mask); + for (i=0; i<10;i++){ + for(ii=0; ii<5; ++ii){ + parityTest += BitStream[(i*5)+ii+idx]; + } + if (parityTest== ((parityTest>>1)<<1)){ + parityTest=0; + for (ii=0; ii<4;++ii){ + //hi = (hi<<1)|(lo>>31); + lo=(lo<<1LL)|(BitStream[(i*5)+ii+idx]); + } + //PrintAndLog("DEBUG: EM parity passed parity val: %d, i:%d, ii:%d,idx:%d, Buffer: %d%d%d%d%d,lo: %d",parityTest,i,ii,idx,BitStream[idx+ii+(i*5)-5],BitStream[idx+ii+(i*5)-4],BitStream[idx+ii+(i*5)-3],BitStream[idx+ii+(i*5)-2],BitStream[idx+ii+(i*5)-1],lo); + }else {//parity failed + //PrintAndLog("DEBUG: EM parity failed parity val: %d, i:%d, ii:%d,idx:%d, Buffer: %d%d%d%d%d",parityTest,i,ii,idx,BitStream[idx+ii+(i*5)-5],BitStream[idx+ii+(i*5)-4],BitStream[idx+ii+(i*5)-3],BitStream[idx+ii+(i*5)-2],BitStream[idx+ii+(i*5)-1]); + parityTest=0; + idx-=8; + if (resetCnt>5)return 0; + resetCnt++; + goto restart;//continue; + } + } + //skip last 5 bit parity test for simplicity. + return lo; + }else{ + idx++; + } + } + return 0; } //by marshmellow //takes 2 arguments - clock and invert both as integers -//attempts to demodulate ask while decoding manchester +//attempts to demodulate ask while decoding manchester //prints binary found and saves in graphbuffer for further commands -int askmandemod(uint8_t * BinStream,uint32_t *BitLen,int *clk, int *invert) +int askmandemod(uint8_t *BinStream, size_t *size, int *clk, int *invert) { - int i; - int high = 0, low = 128; - *clk=DetectASKClock(BinStream,(size_t)*BitLen,*clk); //clock default - - if (*clk<8) *clk =64; - if (*clk<32) *clk=32; - if (*invert != 0 && *invert != 1) *invert=0; - uint32_t initLoopMax = 200; - if (initLoopMax>*BitLen) initLoopMax=*BitLen; - // Detect high and lows - for (i = 0; i < initLoopMax; ++i) //200 samples should be enough to find high and low values - { - if (BinStream[i] > high) - high = BinStream[i]; - else if (BinStream[i] < low) - low = BinStream[i]; - } - if ((high < 158) ){ //throw away static - //PrintAndLog("no data found"); - return -2; - } - //25% fuzz in case highs and lows aren't clipped [marshmellow] - high=(int)((high-128)*.75)+128; - low= (int)((low-128)*.75)+128; - - //PrintAndLog("DEBUG - valid high: %d - valid low: %d",high,low); - int lastBit = 0; //set first clock check - uint32_t bitnum = 0; //output counter - int tol = 0; //clock tolerance adjust - waves will be accepted as within the clock if they fall + or - this value + clock from last valid wave - if (*clk==32)tol=1; //clock tolerance may not be needed anymore currently set to + or - 1 but could be increased for poor waves or removed entirely - int iii = 0; - uint32_t gLen = *BitLen; - if (gLen > 3000) gLen=3000; - uint8_t errCnt =0; - uint32_t bestStart = *BitLen; - uint32_t bestErrCnt = (*BitLen/1000); - uint32_t maxErr = (*BitLen/1000); - //PrintAndLog("DEBUG - lastbit - %d",lastBit); - //loop to find first wave that works - for (iii=0; iii < gLen; ++iii){ - if ((BinStream[iii]>=high)||(BinStream[iii]<=low)){ - lastBit=iii-*clk; - errCnt=0; - //loop through to see if this start location works - for (i = iii; i < *BitLen; ++i) { - if ((BinStream[i] >= high) && ((i-lastBit)>(*clk-tol))){ - lastBit+=*clk; - } else if ((BinStream[i] <= low) && ((i-lastBit)>(*clk-tol))){ - //low found and we are expecting a bar - lastBit+=*clk; - } else { - //mid value found or no bar supposed to be here - if ((i-lastBit)>(*clk+tol)){ - //should have hit a high or low based on clock!! - - //debug - //PrintAndLog("DEBUG - no wave in expected area - location: %d, expected: %d-%d, lastBit: %d - resetting search",i,(lastBit+(clk-((int)(tol)))),(lastBit+(clk+((int)(tol)))),lastBit); - - errCnt++; - lastBit+=*clk;//skip over until hit too many errors - if (errCnt>(maxErr)) break; //allow 1 error for every 1000 samples else start over - } - } - if ((i-iii) >(400 * *clk)) break; //got plenty of bits - } - //we got more than 64 good bits and not all errors - if ((((i-iii)/ *clk) > (64+errCnt)) && (errCnt= high) && ((i-lastBit)>(*clk-tol))){ - lastBit+=*clk; - BinStream[bitnum] = *invert; - bitnum++; - } else if ((BinStream[i] <= low) && ((i-lastBit)>(*clk-tol))){ - //low found and we are expecting a bar - lastBit+=*clk; - BinStream[bitnum] = 1-*invert; - bitnum++; - } else { - //mid value found or no bar supposed to be here - if ((i-lastBit)>(*clk+tol)){ - //should have hit a high or low based on clock!! - - //debug - //PrintAndLog("DEBUG - no wave in expected area - location: %d, expected: %d-%d, lastBit: %d - resetting search",i,(lastBit+(clk-((int)(tol)))),(lastBit+(clk+((int)(tol)))),lastBit); - if (bitnum > 0){ - BinStream[bitnum]=77; - bitnum++; - } - - lastBit+=*clk;//skip over error - } - } - if (bitnum >=400) break; - } - *BitLen=bitnum; - } else{ - *invert=bestStart; - *clk=iii; - return -1; - } - return bestErrCnt; + int i; + int high = 0, low = 128; + *clk=DetectASKClock(BinStream, *size, *clk); //clock default + + if (*clk<8) *clk =64; + if (*clk<32) *clk=32; + if (*invert != 0 && *invert != 1) *invert=0; + uint32_t initLoopMax = 200; + if (initLoopMax > *size) initLoopMax=*size; + // Detect high and lows + for (i = 0; i < initLoopMax; ++i) //200 samples should be enough to find high and low values + { + if (BinStream[i] > high) + high = BinStream[i]; + else if (BinStream[i] < low) + low = BinStream[i]; + } + if ((high < 158) ){ //throw away static + //PrintAndLog("no data found"); + return -2; + } + //25% fuzz in case highs and lows aren't clipped [marshmellow] + high=(int)((high-128)*.75)+128; + low= (int)((low-128)*.75)+128; + + //PrintAndLog("DEBUG - valid high: %d - valid low: %d",high,low); + int lastBit = 0; //set first clock check + uint32_t bitnum = 0; //output counter + int tol = 0; //clock tolerance adjust - waves will be accepted as within the clock if they fall + or - this value + clock from last valid wave + if (*clk==32)tol=1; //clock tolerance may not be needed anymore currently set to + or - 1 but could be increased for poor waves or removed entirely + int iii = 0; + uint32_t gLen = *size; + if (gLen > 3000) gLen=3000; + uint8_t errCnt =0; + uint32_t bestStart = *size; + uint32_t bestErrCnt = (*size/1000); + uint32_t maxErr = (*size/1000); + //PrintAndLog("DEBUG - lastbit - %d",lastBit); + //loop to find first wave that works + for (iii=0; iii < gLen; ++iii){ + if ((BinStream[iii] >= high) || (BinStream[iii] <= low)){ + lastBit=iii-*clk; + errCnt=0; + //loop through to see if this start location works + for (i = iii; i < *size; ++i) { + if ((BinStream[i] >= high) && ((i-lastBit) > (*clk-tol))){ + lastBit+=*clk; + } else if ((BinStream[i] <= low) && ((i-lastBit) > (*clk-tol))){ + //low found and we are expecting a bar + lastBit+=*clk; + } else { + //mid value found or no bar supposed to be here + if ((i-lastBit)>(*clk+tol)){ + //should have hit a high or low based on clock!! + + //debug + //PrintAndLog("DEBUG - no wave in expected area - location: %d, expected: %d-%d, lastBit: %d - resetting search",i,(lastBit+(clk-((int)(tol)))),(lastBit+(clk+((int)(tol)))),lastBit); + + errCnt++; + lastBit+=*clk;//skip over until hit too many errors + if (errCnt>(maxErr)) break; //allow 1 error for every 1000 samples else start over + } + } + if ((i-iii) >(400 * *clk)) break; //got plenty of bits + } + //we got more than 64 good bits and not all errors + if ((((i-iii)/ *clk) > (64+errCnt)) && (errCnt= high) && ((i-lastBit) > (*clk-tol))){ + lastBit += *clk; + BinStream[bitnum] = *invert; + bitnum++; + } else if ((BinStream[i] <= low) && ((i-lastBit) > (*clk-tol))){ + //low found and we are expecting a bar + lastBit+=*clk; + BinStream[bitnum] = 1-*invert; + bitnum++; + } else { + //mid value found or no bar supposed to be here + if ((i-lastBit)>(*clk+tol)){ + //should have hit a high or low based on clock!! + + //debug + //PrintAndLog("DEBUG - no wave in expected area - location: %d, expected: %d-%d, lastBit: %d - resetting search",i,(lastBit+(clk-((int)(tol)))),(lastBit+(clk+((int)(tol)))),lastBit); + if (bitnum > 0){ + BinStream[bitnum]=77; + bitnum++; + } + + lastBit+=*clk;//skip over error + } + } + if (bitnum >=400) break; + } + *size=bitnum; + } else{ + *invert=bestStart; + *clk=iii; + return -1; + } + return bestErrCnt; } //by marshmellow //take 10 and 01 and manchester decode //run through 2 times and take least errCnt -int manrawdecode(uint8_t * BitStream, int *bitLen) +int manrawdecode(uint8_t * BitStream, size_t *size) { - int bitnum=0; - int errCnt =0; - int i=1; - int bestErr = 1000; - int bestRun = 0; - int ii=1; - for (ii=1;ii<3;++ii){ - i=1; - for (i=i+ii;i<*bitLen-2;i+=2){ - if(BitStream[i]==1 && (BitStream[i+1]==0)){ - } else if((BitStream[i]==0)&& BitStream[i+1]==1){ - } else { - errCnt++; - } - if(bitnum>300) break; - } - if (bestErr>errCnt){ - bestErr=errCnt; - bestRun=ii; - } - errCnt=0; - } - errCnt=bestErr; - if (errCnt<20){ - ii=bestRun; - i=1; - for (i=i+ii;i<*bitLen-2;i+=2){ - if(BitStream[i]==1 && (BitStream[i+1]==0)){ - BitStream[bitnum++]=0; - } else if((BitStream[i]==0)&& BitStream[i+1]==1){ - BitStream[bitnum++]=1; - } else { - BitStream[bitnum++]=77; - //errCnt++; - } - if(bitnum>300) break; - } - *bitLen=bitnum; - } - return errCnt; + int bitnum=0; + int errCnt =0; + int i=1; + int bestErr = 1000; + int bestRun = 0; + int ii=1; + for (ii=1;ii<3;++ii){ + i=1; + for (i=i+ii;i<*size-2;i+=2){ + if(BitStream[i]==1 && (BitStream[i+1]==0)){ + } else if((BitStream[i]==0)&& BitStream[i+1]==1){ + } else { + errCnt++; + } + if(bitnum>300) break; + } + if (bestErr>errCnt){ + bestErr=errCnt; + bestRun=ii; + } + errCnt=0; + } + errCnt=bestErr; + if (errCnt<20){ + ii=bestRun; + i=1; + for (i=i+ii;i < *size-2;i+=2){ + if(BitStream[i] == 1 && (BitStream[i+1] == 0)){ + BitStream[bitnum++]=0; + } else if((BitStream[i] == 0) && BitStream[i+1] == 1){ + BitStream[bitnum++]=1; + } else { + BitStream[bitnum++]=77; + //errCnt++; + } + if(bitnum>300) break; + } + *size=bitnum; + } + return errCnt; } //by marshmellow //take 01 or 10 = 0 and 11 or 00 = 1 -int BiphaseRawDecode(uint8_t * BitStream, int *bitLen, int offset) +int BiphaseRawDecode(uint8_t *BitStream, size_t *size, int offset) { - uint8_t bitnum=0; - uint32_t errCnt =0; - uint32_t i=1; - i=offset; - for (;i<*bitLen-2;i+=2){ - if((BitStream[i]==1 && BitStream[i+1]==0)||(BitStream[i]==0 && BitStream[i+1]==1)){ - BitStream[bitnum++]=1; - } else if((BitStream[i]==0 && BitStream[i+1]==0)||(BitStream[i]==1 && BitStream[i+1]==1)){ - BitStream[bitnum++]=0; - } else { - BitStream[bitnum++]=77; - errCnt++; - } - if(bitnum>250) break; - } - *bitLen=bitnum; - return errCnt; + uint8_t bitnum=0; + uint32_t errCnt =0; + uint32_t i=1; + i=offset; + for (;i<*size-2;i+=2){ + if((BitStream[i]==1 && BitStream[i+1]==0) || (BitStream[i]==0 && BitStream[i+1]==1)){ + BitStream[bitnum++]=1; + } else if((BitStream[i]==0 && BitStream[i+1]==0) || (BitStream[i]==1 && BitStream[i+1]==1)){ + BitStream[bitnum++]=0; + } else { + BitStream[bitnum++]=77; + errCnt++; + } + if(bitnum>250) break; + } + *size=bitnum; + return errCnt; } //by marshmellow //takes 2 arguments - clock and invert both as integers //attempts to demodulate ask only //prints binary found and saves in graphbuffer for further commands -int askrawdemod(uint8_t *BinStream, int *bitLen,int *clk, int *invert) +int askrawdemod(uint8_t *BinStream, size_t *size, int *clk, int *invert) { - uint32_t i; - // int invert=0; //invert default - int high = 0, low = 128; - *clk=DetectASKClock(BinStream,*bitLen,*clk); //clock default - uint8_t BitStream[502] = {0}; - - if (*clk<8) *clk =64; - if (*clk<32) *clk=32; - if (*invert != 0 && *invert != 1) *invert =0; - uint32_t initLoopMax = 200; - if (initLoopMax>*bitLen) initLoopMax=*bitLen; - // Detect high and lows - for (i = 0; i < initLoopMax; ++i) //200 samples should be plenty to find high and low values - { - if (BinStream[i] > high) - high = BinStream[i]; - else if (BinStream[i] < low) - low = BinStream[i]; - } - if ((high < 158)){ //throw away static - // PrintAndLog("no data found"); - return -2; - } - //25% fuzz in case highs and lows aren't clipped [marshmellow] - high=(int)((high-128)*.75)+128; - low= (int)((low-128)*.75)+128; - - //PrintAndLog("DEBUG - valid high: %d - valid low: %d",high,low); - int lastBit = 0; //set first clock check - uint32_t bitnum = 0; //output counter - uint8_t tol = 0; //clock tolerance adjust - waves will be accepted as within the clock if they fall + or - this value + clock from last valid wave - if (*clk==32)tol=1; //clock tolerance may not be needed anymore currently set to + or - 1 but could be increased for poor waves or removed entirely - uint32_t iii = 0; - uint32_t gLen = *bitLen; - if (gLen > 500) gLen=500; - uint8_t errCnt =0; - uint32_t bestStart = *bitLen; - uint32_t bestErrCnt = (*bitLen/1000); - uint8_t midBit=0; - //PrintAndLog("DEBUG - lastbit - %d",lastBit); - //loop to find first wave that works - for (iii=0; iii < gLen; ++iii){ - if ((BinStream[iii]>=high)||(BinStream[iii]<=low)){ - lastBit=iii-*clk; - //loop through to see if this start location works - for (i = iii; i < *bitLen; ++i) { - if ((BinStream[i] >= high) && ((i-lastBit)>(*clk-tol))){ - lastBit+=*clk; - BitStream[bitnum] = *invert; - bitnum++; - midBit=0; - } else if ((BinStream[i] <= low) && ((i-lastBit)>(*clk-tol))){ - //low found and we are expecting a bar - lastBit+=*clk; - BitStream[bitnum] = 1-*invert; - bitnum++; - midBit=0; - } else if ((BinStream[i]<=low) && (midBit==0) && ((i-lastBit)>((*clk/2)-tol))){ - //mid bar? - midBit=1; - BitStream[bitnum]= 1-*invert; - bitnum++; - } else if ((BinStream[i]>=high)&&(midBit==0) && ((i-lastBit)>((*clk/2)-tol))){ - //mid bar? - midBit=1; - BitStream[bitnum]= *invert; - bitnum++; - } else if ((i-lastBit)>((*clk/2)+tol)&&(midBit==0)){ - //no mid bar found - midBit=1; - BitStream[bitnum]= BitStream[bitnum-1]; - bitnum++; - } else { - //mid value found or no bar supposed to be here - - if ((i-lastBit)>(*clk+tol)){ - //should have hit a high or low based on clock!! - //debug - //PrintAndLog("DEBUG - no wave in expected area - location: %d, expected: %d-%d, lastBit: %d - resetting search",i,(lastBit+(clk-((int)(tol)))),(lastBit+(clk+((int)(tol)))),lastBit); - if (bitnum > 0){ - BitStream[bitnum]=77; - bitnum++; - } - - - errCnt++; - lastBit+=*clk;//skip over until hit too many errors - if (errCnt>((*bitLen/1000))){ //allow 1 error for every 1000 samples else start over - errCnt=0; - bitnum=0;//start over - break; - } - } - } - if (bitnum>500) break; - } - //we got more than 64 good bits and not all errors - if ((bitnum > (64+errCnt)) && (errCnt<(*bitLen/1000))) { - //possible good read - if (errCnt==0) break; //great read - finish - if (bestStart == iii) break; //if current run == bestErrCnt run (after exhausted testing) then finish - if (errCnt=gLen){ //exhausted test - //if there was a ok test go back to that one and re-run the best run (then dump after that run) - if (bestErrCnt < (*bitLen/1000)) iii=bestStart; - } - } - if (bitnum>16){ - - // PrintAndLog("Data start pos:%d, lastBit:%d, stop pos:%d, numBits:%d",iii,lastBit,i,bitnum); - //move BitStream back to BinStream - // ClearGraph(0); - for (i=0; i < bitnum; ++i){ - BinStream[i]=BitStream[i]; - } - *bitLen=bitnum; - // RepaintGraphWindow(); - //output - // if (errCnt>0){ - // PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt); - // } - // PrintAndLog("ASK decoded bitstream:"); - // Now output the bitstream to the scrollback by line of 16 bits - // printBitStream2(BitStream,bitnum); - //int errCnt=0; - //errCnt=manrawdemod(BitStream,bitnum); - - // Em410xDecode(Cmd); - } else return -1; - return errCnt; + uint32_t i; + // int invert=0; //invert default + int high = 0, low = 128; + *clk=DetectASKClock(BinStream, *size, *clk); //clock default + uint8_t BitStream[502] = {0}; + + if (*clk<8) *clk =64; + if (*clk<32) *clk=32; + if (*invert != 0 && *invert != 1) *invert =0; + uint32_t initLoopMax = 200; + if (initLoopMax>*size) initLoopMax=*size; + // Detect high and lows + for (i = 0; i < initLoopMax; ++i) //200 samples should be plenty to find high and low values + { + if (BinStream[i] > high) + high = BinStream[i]; + else if (BinStream[i] < low) + low = BinStream[i]; + } + if ((high < 158)){ //throw away static + // PrintAndLog("no data found"); + return -2; + } + //25% fuzz in case highs and lows aren't clipped [marshmellow] + high=(int)((high-128)*.75)+128; + low= (int)((low-128)*.75)+128; + + //PrintAndLog("DEBUG - valid high: %d - valid low: %d",high,low); + int lastBit = 0; //set first clock check + uint32_t bitnum = 0; //output counter + uint8_t tol = 0; //clock tolerance adjust - waves will be accepted as within the clock if they fall + or - this value + clock from last valid wave + if (*clk==32)tol=1; //clock tolerance may not be needed anymore currently set to + or - 1 but could be increased for poor waves or removed entirely + uint32_t iii = 0; + uint32_t gLen = *size; + if (gLen > 500) gLen=500; + uint8_t errCnt =0; + uint32_t bestStart = *size; + uint32_t bestErrCnt = (*size/1000); + uint8_t midBit=0; + //PrintAndLog("DEBUG - lastbit - %d",lastBit); + //loop to find first wave that works + for (iii=0; iii < gLen; ++iii){ + if ((BinStream[iii]>=high) || (BinStream[iii]<=low)){ + lastBit=iii-*clk; + //loop through to see if this start location works + for (i = iii; i < *size; ++i) { + if ((BinStream[i] >= high) && ((i-lastBit)>(*clk-tol))){ + lastBit+=*clk; + BitStream[bitnum] = *invert; + bitnum++; + midBit=0; + } else if ((BinStream[i] <= low) && ((i-lastBit)>(*clk-tol))){ + //low found and we are expecting a bar + lastBit+=*clk; + BitStream[bitnum] = 1- *invert; + bitnum++; + midBit=0; + } else if ((BinStream[i]<=low) && (midBit==0) && ((i-lastBit)>((*clk/2)-tol))){ + //mid bar? + midBit=1; + BitStream[bitnum]= 1- *invert; + bitnum++; + } else if ((BinStream[i]>=high) && (midBit==0) && ((i-lastBit)>((*clk/2)-tol))){ + //mid bar? + midBit=1; + BitStream[bitnum]= *invert; + bitnum++; + } else if ((i-lastBit)>((*clk/2)+tol) && (midBit==0)){ + //no mid bar found + midBit=1; + BitStream[bitnum]= BitStream[bitnum-1]; + bitnum++; + } else { + //mid value found or no bar supposed to be here + + if ((i-lastBit)>(*clk+tol)){ + //should have hit a high or low based on clock!! + //debug + //PrintAndLog("DEBUG - no wave in expected area - location: %d, expected: %d-%d, lastBit: %d - resetting search",i,(lastBit+(clk-((int)(tol)))),(lastBit+(clk+((int)(tol)))),lastBit); + if (bitnum > 0){ + BitStream[bitnum]=77; + bitnum++; + } + + + errCnt++; + lastBit+=*clk;//skip over until hit too many errors + if (errCnt > ((*size/1000))){ //allow 1 error for every 1000 samples else start over + errCnt=0; + bitnum=0;//start over + break; + } + } + } + if (bitnum>500) break; + } + //we got more than 64 good bits and not all errors + if ((bitnum > (64+errCnt)) && (errCnt<(*size/1000))) { + //possible good read + if (errCnt==0) break; //great read - finish + if (bestStart == iii) break; //if current run == bestErrCnt run (after exhausted testing) then finish + if (errCnt=gLen){ //exhausted test + //if there was a ok test go back to that one and re-run the best run (then dump after that run) + if (bestErrCnt < (*size/1000)) iii=bestStart; + } + } + if (bitnum>16){ + + // PrintAndLog("Data start pos:%d, lastBit:%d, stop pos:%d, numBits:%d",iii,lastBit,i,bitnum); + //move BitStream back to BinStream + // ClearGraph(0); + for (i=0; i < bitnum; ++i){ + BinStream[i]=BitStream[i]; + } + *size=bitnum; + // RepaintGraphWindow(); + //output + // if (errCnt>0){ + // PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt); + // } + // PrintAndLog("ASK decoded bitstream:"); + // Now output the bitstream to the scrollback by line of 16 bits + // printBitStream2(BitStream,bitnum); + //int errCnt=0; + //errCnt=manrawdemod(BitStream,bitnum); + + // Em410xDecode(Cmd); + } else return -1; + return errCnt; } -//translate wave to 11111100000 (1 for each short wave 0 for each long wave) +//translate wave to 11111100000 (1 for each short wave 0 for each long wave) size_t fsk_wave_demod(uint8_t * dest, size_t size, uint8_t fchigh, uint8_t fclow) { - uint32_t last_transition = 0; - uint32_t idx = 1; - uint32_t maxVal=0; - if (fchigh==0) fchigh=10; - if (fclow==0) fclow=8; - // we do care about the actual theshold value as sometimes near the center of the - // wave we may get static that changes direction of wave for one value - // if our value is too low it might affect the read. and if our tag or - // antenna is weak a setting too high might not see anything. [marshmellow] - if (size<100) return 0; - for(idx=1; idx<100; idx++){ - if(maxVal1 transition - if (dest[idx-1] < dest[idx]) { // 0 -> 1 transition - if ((idx-last_transition)<(fclow-2)){ //0-5 = garbage noise - //do nothing with extra garbage - } else if ((idx-last_transition) < (fchigh-1)) { //6-8 = 8 waves - dest[numBits]=1; - } else { //9+ = 10 waves - dest[numBits]=0; - } - last_transition = idx; - numBits++; - } - } - return numBits; //Actually, it returns the number of bytes, but each byte represents a bit: 1 or 0 + uint32_t last_transition = 0; + uint32_t idx = 1; + uint32_t maxVal=0; + if (fchigh==0) fchigh=10; + if (fclow==0) fclow=8; + // we do care about the actual theshold value as sometimes near the center of the + // wave we may get static that changes direction of wave for one value + // if our value is too low it might affect the read. and if our tag or + // antenna is weak a setting too high might not see anything. [marshmellow] + if (size<100) return 0; + for(idx=1; idx<100; idx++){ + if(maxVal1 transition + if (dest[idx-1] < dest[idx]) { // 0 -> 1 transition + if ((idx-last_transition)<(fclow-2)){ //0-5 = garbage noise + //do nothing with extra garbage + } else if ((idx-last_transition) < (fchigh-1)) { //6-8 = 8 waves + dest[numBits]=1; + } else { //9+ = 10 waves + dest[numBits]=0; + } + last_transition = idx; + numBits++; + } + } + return numBits; //Actually, it returns the number of bytes, but each byte represents a bit: 1 or 0 } uint32_t myround2(float f) { - if (f >= 2000) return 2000;//something bad happened - return (uint32_t) (f + (float)0.5); + if (f >= 2000) return 2000;//something bad happened + return (uint32_t) (f + (float)0.5); } -//translate 11111100000 to 10 -size_t aggregate_bits(uint8_t *dest,size_t size, uint8_t rfLen, uint8_t maxConsequtiveBits, uint8_t invert,uint8_t fchigh,uint8_t fclow )// uint8_t h2l_crossing_value,uint8_t l2h_crossing_value, +//translate 11111100000 to 10 +size_t aggregate_bits(uint8_t *dest, size_t size, uint8_t rfLen, uint8_t maxConsequtiveBits, + uint8_t invert, uint8_t fchigh, uint8_t fclow) { - uint8_t lastval=dest[0]; - uint32_t idx=0; - size_t numBits=0; - uint32_t n=1; - - for( idx=1; idx < size; idx++) { - - if (dest[idx]==lastval) { - n++; - continue; - } - //if lastval was 1, we have a 1->0 crossing - if ( dest[idx-1]==1 ) { - n=myround2((float)(n+1)/((float)(rfLen)/(float)fclow)); - //n=(n+1) / h2l_crossing_value; - } else {// 0->1 crossing - n=myround2((float)(n+1)/((float)(rfLen-2)/(float)fchigh)); //-2 for fudge factor - //n=(n+1) / l2h_crossing_value; - } - if (n == 0) n = 1; - - if(n < maxConsequtiveBits) //Consecutive - { - if(invert==0){ //invert bits - memset(dest+numBits, dest[idx-1] , n); - }else{ - memset(dest+numBits, dest[idx-1]^1 , n); - } - numBits += n; - } - n=0; - lastval=dest[idx]; - }//end for - return numBits; + uint8_t lastval=dest[0]; + uint32_t idx=0; + size_t numBits=0; + uint32_t n=1; + + for( idx=1; idx < size; idx++) { + + if (dest[idx]==lastval) { + n++; + continue; + } + //if lastval was 1, we have a 1->0 crossing + if ( dest[idx-1]==1 ) { + n=myround2((float)(n+1)/((float)(rfLen)/(float)fclow)); + //n=(n+1) / h2l_crossing_value; + } else {// 0->1 crossing + n=myround2((float)(n+1)/((float)(rfLen-2)/(float)fchigh)); //-2 for fudge factor + //n=(n+1) / l2h_crossing_value; + } + if (n == 0) n = 1; + + if(n < maxConsequtiveBits) //Consecutive + { + if(invert==0){ //invert bits + memset(dest+numBits, dest[idx-1] , n); + }else{ + memset(dest+numBits, dest[idx-1]^1 , n); + } + numBits += n; + } + n=0; + lastval=dest[idx]; + }//end for + return numBits; } //by marshmellow (from holiman's base) // full fsk demod from GraphBuffer wave to decoded 1s and 0s (no mandemod) int fskdemod(uint8_t *dest, size_t size, uint8_t rfLen, uint8_t invert, uint8_t fchigh, uint8_t fclow) { - // FSK demodulator - size = fsk_wave_demod(dest, size, fchigh, fclow); - size = aggregate_bits(dest, size,rfLen,192,invert,fchigh,fclow); - return size; + // FSK demodulator + size = fsk_wave_demod(dest, size, fchigh, fclow); + size = aggregate_bits(dest, size, rfLen, 192, invert, fchigh, fclow); + return size; } // loop to get raw HID waveform then FSK demodulate the TAG ID from it int HIDdemodFSK(uint8_t *dest, size_t size, uint32_t *hi2, uint32_t *hi, uint32_t *lo) { - size_t idx=0; //, found=0; //size=0, - // FSK demodulator - size = fskdemod(dest, size,50,0,10,8); - - // final loop, go over previously decoded manchester data and decode into usable tag ID - // 111000 bit pattern represent start of frame, 01 pattern represents a 1 and 10 represents a 0 - uint8_t frame_marker_mask[] = {1,1,1,0,0,0}; - int numshifts = 0; - idx = 0; - //one scan - while( idx + sizeof(frame_marker_mask) < size) { - // search for a start of frame marker - if ( memcmp(dest+idx, frame_marker_mask, sizeof(frame_marker_mask)) == 0) - { // frame marker found - idx+=sizeof(frame_marker_mask); - while(dest[idx] != dest[idx+1] && idx < size-2) - { - // Keep going until next frame marker (or error) - // Shift in a bit. Start by shifting high registers - *hi2 = (*hi2<<1)|(*hi>>31); - *hi = (*hi<<1)|(*lo>>31); - //Then, shift in a 0 or one into low - if (dest[idx] && !dest[idx+1]) // 1 0 - *lo=(*lo<<1)|0; - else // 0 1 - *lo=(*lo<<1)|1; - numshifts++; - idx += 2; - } - // Hopefully, we read a tag and hit upon the next frame marker - if(idx + sizeof(frame_marker_mask) < size) - { - if ( memcmp(dest+idx, frame_marker_mask, sizeof(frame_marker_mask)) == 0) - { - //good return - return idx; - } - } - // reset - *hi2 = *hi = *lo = 0; - numshifts = 0; - }else { - idx++; - } - } - return -1; + size_t idx=0; //, found=0; //size=0, + // FSK demodulator + size = fskdemod(dest, size,50,0,10,8); + + // final loop, go over previously decoded manchester data and decode into usable tag ID + // 111000 bit pattern represent start of frame, 01 pattern represents a 1 and 10 represents a 0 + uint8_t frame_marker_mask[] = {1,1,1,0,0,0}; + int numshifts = 0; + idx = 0; + //one scan + while( idx + sizeof(frame_marker_mask) < size) { + // search for a start of frame marker + if ( memcmp(dest+idx, frame_marker_mask, sizeof(frame_marker_mask)) == 0) + { // frame marker found + idx+=sizeof(frame_marker_mask); + while(dest[idx] != dest[idx+1] && idx < size-2) + { + // Keep going until next frame marker (or error) + // Shift in a bit. Start by shifting high registers + *hi2 = (*hi2<<1)|(*hi>>31); + *hi = (*hi<<1)|(*lo>>31); + //Then, shift in a 0 or one into low + if (dest[idx] && !dest[idx+1]) // 1 0 + *lo=(*lo<<1)|0; + else // 0 1 + *lo=(*lo<<1)|1; + numshifts++; + idx += 2; + } + // Hopefully, we read a tag and hit upon the next frame marker + if(idx + sizeof(frame_marker_mask) < size) + { + if ( memcmp(dest+idx, frame_marker_mask, sizeof(frame_marker_mask)) == 0) + { + //good return + return idx; + } + } + // reset + *hi2 = *hi = *lo = 0; + numshifts = 0; + }else { + idx++; + } + } + return -1; } -uint32_t bytebits_to_byte(uint8_t* src, int numbits) +uint32_t bytebits_to_byte(uint8_t* src, size_t numbits) { - uint32_t num = 0; - for(int i = 0 ; i < numbits ; i++) - { - num = (num << 1) | (*src); - src++; - } - return num; + uint32_t num = 0; + for(int i = 0 ; i < numbits ; i++) + { + num = (num << 1) | (*src); + src++; + } + return num; } int IOdemodFSK(uint8_t *dest, size_t size) { static const uint8_t THRESHOLD = 140; - uint32_t idx=0; - //make sure buffer has data - if (size < 66) return -1; - //test samples are not just noise + uint32_t idx=0; + //make sure buffer has data + if (size < 66) return -1; + //test samples are not just noise uint8_t justNoise = 1; for(idx=0;idx< size && justNoise ;idx++){ justNoise = dest[idx] < THRESHOLD; @@ -604,7 +603,7 @@ int IOdemodFSK(uint8_t *dest, size_t size) if(justNoise) return 0; // FSK demodulator - size = fskdemod(dest, size,64,1,10,8); // RF/64 and invert + size = fskdemod(dest, size, 64, 1, 10, 8); // RF/64 and invert if (size < 65) return -1; //did we get a good demod? //Index map //0 10 20 30 40 50 60 @@ -626,7 +625,7 @@ int IOdemodFSK(uint8_t *dest, size_t size) } } } - return 0; + return 0; } // by marshmellow @@ -634,67 +633,405 @@ int IOdemodFSK(uint8_t *dest, size_t size) // maybe somehow adjust peak trimming value based on samples to fix? int DetectASKClock(uint8_t dest[], size_t size, int clock) { - int i=0; - int peak=0; - int low=128; - int clk[]={16,32,40,50,64,100,128,256}; - int loopCnt = 256; //don't need to loop through entire array... - if (sizepeak){ - peak = dest[i]; - } - if(dest[i]=peak) || (dest[ii]<=low)){ - errCnt[clkCnt]=0; - // now that we have the first one lined up test rest of wave array - for (i=0; i<((int)(size/clk[clkCnt])-1); ++i){ - if (dest[ii+(i*clk[clkCnt])]>=peak || dest[ii+(i*clk[clkCnt])]<=low){ - }else if(dest[ii+(i*clk[clkCnt])-tol]>=peak || dest[ii+(i*clk[clkCnt])-tol]<=low){ - }else if(dest[ii+(i*clk[clkCnt])+tol]>=peak || dest[ii+(i*clk[clkCnt])+tol]<=low){ - }else{ //error no peak detected - errCnt[clkCnt]++; - } - } - //if we found no errors this is correct one - return this clock - if(errCnt[clkCnt]==0) return clk[clkCnt]; - //if we found errors see if it is lowest so far and save it as best run - if(errCnt[clkCnt]peak){ + peak = dest[i]; + } + if(dest[i]=peak) || (dest[ii]<=low)){ + errCnt=0; + // now that we have the first one lined up test rest of wave array + for (i=0; i<((int)(size/clk[clkCnt])-1); ++i){ + if (dest[ii+(i*clk[clkCnt])]>=peak || dest[ii+(i*clk[clkCnt])]<=low){ + }else if(dest[ii+(i*clk[clkCnt])-tol]>=peak || dest[ii+(i*clk[clkCnt])-tol]<=low){ + }else if(dest[ii+(i*clk[clkCnt])+tol]>=peak || dest[ii+(i*clk[clkCnt])+tol]<=low){ + }else{ //error no peak detected + errCnt++; + } + } + //if we found no errors this is correct one - return this clock + if(errCnt==0) return clk[clkCnt]; + //if we found errors see if it is lowest so far and save it as best run + if(errCntpeak){ + peak = dest[i]; + } + if(dest[i]=peak) || (dest[ii]<=low)){ + errCnt=0; + peakcnt=0; + // now that we have the first one lined up test rest of wave array + for (i=0; i<((int)(size/clk[clkCnt])-1); ++i){ + if (dest[ii+(i*clk[clkCnt])]>=peak || dest[ii+(i*clk[clkCnt])]<=low){ + peakcnt++; + }else if(dest[ii+(i*clk[clkCnt])-tol]>=peak || dest[ii+(i*clk[clkCnt])-tol]<=low){ + peakcnt++; + }else if(dest[ii+(i*clk[clkCnt])+tol]>=peak || dest[ii+(i*clk[clkCnt])+tol]<=low){ + peakcnt++; + }else{ //error no peak detected + errCnt++; + } + } + if(peakcnt>peaksdet[clkCnt]) { + peaksdet[clkCnt]=peakcnt; + bestErr[clkCnt]=errCnt; + } + } + } + } + int iii=0; + int best=0; + //int ratio2; //debug + int ratio; + //int bits; + for (iii=0; iii<7;++iii){ + ratio=1000; + //ratio2=1000; //debug + //bits=size/clk[iii]; //debug + if (peaksdet[iii]>0){ + ratio=bestErr[iii]/peaksdet[iii]; + if (((bestErr[best]/peaksdet[best])>(ratio)+1)){ + best = iii; + } + //ratio2=bits/peaksdet[iii]; //debug + } + //PrintAndLog("DEBUG: Clk: %d, peaks: %d, errs: %d, bestClk: %d, ratio: %d, bits: %d, peakbitr: %d",clk[iii],peaksdet[iii],bestErr[iii],clk[best],ratio, bits,ratio2); + } + return clk[best]; +} + +//by marshmellow (attempt to get rid of high immediately after a low) +void pskCleanWave(uint8_t *bitStream, size_t size) +{ + int i; + int low=128; + int high=0; + int gap = 4; + // int loopMax = 2048; + int newLow=0; + int newHigh=0; + for (i=0; ihigh) high=bitStream[i]; + } + high = (int)(((high-128)*.80)+128); + low = (int)(((low-128)*.90)+128); + //low = (uint8_t)(((int)(low)-128)*.80)+128; + for (i=0; i=high) newHigh=1; + } + return; +} + + +//redesigned by marshmellow adjusted from existing decode functions +//indala id decoding - only tested on 26 bit tags, but attempted to make it work for more +int indala26decode(uint8_t *bitStream, size_t *size, uint8_t *invert) +{ + //26 bit 40134 format (don't know other formats) + int i; + int long_wait; + long_wait = 29;//29 leading zeros in format + int start; + int first = 0; + int first2 = 0; + int bitCnt = 0; + int ii; + // Finding the start of a UID + for (start = 0; start <= *size - 250; start++) { + first = bitStream[start]; + for (i = start; i < start + long_wait; i++) { + if (bitStream[i] != first) { + break; + } + } + if (i == (start + long_wait)) { + break; + } + } + if (start == *size - 250 + 1) { + // did not find start sequence + return -1; + } + //found start once now test length by finding next one + // Inverting signal if needed + if (first == 1) { + for (i = start; i < *size; i++) { + bitStream[i] = !bitStream[i]; + } + *invert = 1; + }else *invert=0; + + int iii; + for (ii=start+29; ii <= *size - 250; ii++) { + first2 = bitStream[ii]; + for (iii = ii; iii < ii + long_wait; iii++) { + if (bitStream[iii] != first2) { + break; + } + } + if (iii == (ii + long_wait)) { + break; + } + } + if (ii== *size - 250 + 1){ + // did not find second start sequence + return -2; + } + bitCnt=ii-start; + + // Dumping UID + i = start; + for (ii = 0; ii < bitCnt; ii++) { + bitStream[ii] = bitStream[i++]; + } + *size=bitCnt; + return 1; } + + +//by marshmellow - demodulate PSK wave or NRZ wave (both similar enough) +//peaks switch bit (high=1 low=0) each clock cycle = 1 bit determined by last peak +int pskNRZrawDemod(uint8_t *dest, size_t *size, int *clk, int *invert) +{ + pskCleanWave(dest,*size); + int clk2 = DetectpskNRZClock(dest, *size, *clk); + *clk=clk2; + uint32_t i; + uint8_t high=0, low=128; + uint32_t gLen = *size; + if (gLen > 1280) gLen=1280; + // get high + for (i=0; ihigh) high = dest[i]; + if (dest[i]=high)||(dest[iii]<=low)){ + lastBit=iii-*clk; + //loop through to see if this start location works + for (i = iii; i < *size; ++i) { + //if we found a high bar and we are at a clock bit + if ((dest[i]>=high ) && (i>=lastBit+*clk-tol && i<=lastBit+*clk+tol)){ + bitHigh=1; + lastBit+=*clk; + ignorewin=*clk/8; + bitnum++; + //else if low bar found and we are at a clock point + }else if ((dest[i]<=low ) && (i>=lastBit+*clk-tol && i<=lastBit+*clk+tol)){ + bitHigh=1; + lastBit+=*clk; + ignorewin=*clk/8; + bitnum++; + //else if no bars found + }else if(dest[i]low) { + if (ignorewin==0){ + bitHigh=0; + }else ignorewin--; + //if we are past a clock point + if (i>=lastBit+*clk+tol){ //clock val + lastBit+=*clk; + bitnum++; + } + //else if bar found but we are not at a clock bit and we did not just have a clock bit + }else if ((dest[i]>=high || dest[i]<=low) && (ilastBit+*clk+tol) && (bitHigh==0)){ + //error bar found no clock... + errCnt++; + } + if (bitnum>=1000) break; + } + //we got more than 64 good bits and not all errors + if ((bitnum > (64+errCnt)) && (errCnt<(maxErr))) { + //possible good read + if (errCnt==0){ + bestStart = iii; + bestErrCnt=errCnt; + break; //great read - finish + } + if (bestStart == iii) break; //if current run == bestErrCnt run (after exhausted testing) then finish + if (errCnt=high ) && (i>=lastBit+*clk-tol && i<=lastBit+*clk+tol)){ + bitHigh=1; + lastBit+=*clk; + curBit=1-*invert; + dest[bitnum]=curBit; + ignorewin=*clk/8; + bitnum++; + //else if low bar found and we are at a clock point + }else if ((dest[i]<=low ) && (i>=lastBit+*clk-tol && i<=lastBit+*clk+tol)){ + bitHigh=1; + lastBit+=*clk; + curBit=*invert; + dest[bitnum]=curBit; + ignorewin=*clk/8; + bitnum++; + //else if no bars found + }else if(dest[i]low) { + if (ignorewin==0){ + bitHigh=0; + }else ignorewin--; + //if we are past a clock point + if (i>=lastBit+*clk+tol){ //clock val + lastBit+=*clk; + dest[bitnum]=curBit; + bitnum++; + } + //else if bar found but we are not at a clock bit and we did not just have a clock bit + }else if ((dest[i]>=high || dest[i]<=low) && ((ilastBit+*clk+tol)) && (bitHigh==0)){ + //error bar found no clock... + bitHigh=1; + dest[bitnum]=77; + bitnum++; + errCnt++; + } + if (bitnum >=1000) break; + } + *size=bitnum; + } else{ + *size=bitnum; + *clk=bestStart; + return -1; + } + + if (bitnum>16){ + *size=bitnum; + } else return -1; + return errCnt; +} + diff --git a/common/lfdemod.h b/common/lfdemod.h index ad95fda5..b0feff04 100644 --- a/common/lfdemod.h +++ b/common/lfdemod.h @@ -1,4 +1,4 @@ -// Copyright (C) 2014 +// Copyright (C) 2014 // // This code is licensed to you under the terms of the GNU GPL, version 2 or, // at your option, any later version. See the LICENSE.txt file for the text of @@ -12,14 +12,18 @@ #include int DetectASKClock(uint8_t dest[], size_t size, int clock); -int askmandemod(uint8_t *BinStream,uint32_t *BitLen,int *clk, int *invert); -uint64_t Em410xDecode(uint8_t *BitStream,uint32_t BitLen); -int manrawdecode(uint8_t *BitStream, int *bitLen); -int BiphaseRawDecode(uint8_t * BitStream, int *bitLen, int offset); -int askrawdemod(uint8_t *BinStream, int *bitLen,int *clk, int *invert); +int askmandemod(uint8_t *BinStream, size_t *size, int *clk, int *invert); +uint64_t Em410xDecode(uint8_t *BitStream,size_t size); +int manrawdecode(uint8_t *BitStream, size_t *size); +int BiphaseRawDecode(uint8_t * BitStream, size_t *size, int offset); +int askrawdemod(uint8_t *BinStream, size_t *size, int *clk, int *invert); int HIDdemodFSK(uint8_t *dest, size_t size, uint32_t *hi2, uint32_t *hi, uint32_t *lo); int IOdemodFSK(uint8_t *dest, size_t size); int fskdemod(uint8_t *dest, size_t size, uint8_t rfLen, uint8_t invert, uint8_t fchigh, uint8_t fclow); -uint32_t bytebits_to_byte(uint8_t* src, int numbits); +uint32_t bytebits_to_byte(uint8_t* src, size_t numbits); +int pskNRZrawDemod(uint8_t *dest, size_t *size, int *clk, int *invert); +int DetectpskNRZClock(uint8_t dest[], size_t size, int clock); +int indala26decode(uint8_t *bitStream, size_t *size, uint8_t *invert); +void pskCleanWave(uint8_t *bitStream, size_t size); #endif