X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/07976a256df582dbaf8b51a414e1a0c2188d06fb..c12512e99ad08689e171e80a01f7148e55ee64e1:/armsrc/lfops.c diff --git a/armsrc/lfops.c b/armsrc/lfops.c index 397ea847..b9dbb8e2 100644 --- a/armsrc/lfops.c +++ b/armsrc/lfops.c @@ -14,9 +14,16 @@ #include "hitag2.h" #include "crc16.h" #include "string.h" +#include "lfdemod.h" -// split into two routines so we can avoid timing issues after sending commands // -void DoAcquisition125k_internal(bool silent) + +/** +* 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); @@ -31,25 +38,39 @@ void DoAcquisition125k_internal(bool silent) } if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_RXRDY) { dest[i] = (uint8_t)AT91C_BASE_SSC->SSC_RHR; - i++; LED_D_OFF(); - if (i >= n) break; + if (trigger_threshold != -1 && dest[i] < trigger_threshold) + continue; + else + trigger_threshold = -1; + if (++i >= n) break; } } - if( ! silent) + 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]); + dest[0], dest[1], dest[2], dest[3], dest[4], dest[5], dest[6], dest[7]); + } } - -void DoAcquisition125k(void) +/** +* Perform sample aquisition. +*/ +void DoAcquisition125k(int trigger_threshold) { - DoAcquisition125k_internal(false); + DoAcquisition125k_internal(trigger_threshold, false); } -void SetupToAcquireRawAdcSamples(int divisor) +/** +* 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) @@ -57,48 +78,55 @@ void SetupToAcquireRawAdcSamples(int divisor) else FpgaSendCommand(FPGA_CMD_SET_DIVISOR, divisor); - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER); + 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. +**/ void AcquireRawAdcSamples125k(int divisor) { - SetupToAcquireRawAdcSamples(divisor); + LFSetupFPGAForADC(divisor, true); // Now call the acquisition routine - DoAcquisition125k_internal(false); + DoAcquisition125k_internal(-1,false); +} +/** +* Initializes the FPGA for snoop-mode, and acquires the samples. +**/ + +void SnoopLFRawAdcSamples(int divisor, int trigger_threshold) +{ + LFSetupFPGAForADC(divisor, false); + DoAcquisition125k(trigger_threshold); } void ModThenAcquireRawAdcSamples125k(int delay_off, int period_0, int period_1, uint8_t *command) { - int at134khz; /* 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 - if (command[strlen((char *) command) - 1] == 'h') - at134khz = TRUE; - else - at134khz = FALSE; - if (at134khz) - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 88); //134.8Khz - else - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz + if (command[strlen((char *) command) - 1] == 'h') + divisor_used = 88; // 134.8 KHz - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER); + 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); @@ -110,12 +138,9 @@ void ModThenAcquireRawAdcSamples125k(int delay_off, int period_0, int period_1, FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); LED_D_OFF(); SpinDelayUs(delay_off); - if (at134khz) - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 88); //134.8Khz - else - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz + FpgaSendCommand(FPGA_CMD_SET_DIVISOR, divisor_used); - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER); + FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); LED_D_ON(); if(*(command++) == '0') SpinDelayUs(period_0); @@ -125,15 +150,12 @@ void ModThenAcquireRawAdcSamples125k(int delay_off, int period_0, int period_1, FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); LED_D_OFF(); SpinDelayUs(delay_off); - if (at134khz) - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 88); //134.8Khz - else - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz + FpgaSendCommand(FPGA_CMD_SET_DIVISOR, divisor_used); - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER); + FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); // now do the read - DoAcquisition125k(); + DoAcquisition125k(-1); } /* blank r/w tag data stream @@ -151,15 +173,12 @@ void ReadTItag(void) // 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 + #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; @@ -170,6 +189,7 @@ void ReadTItag(void) 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 @@ -194,10 +214,10 @@ void ReadTItag(void) // 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; + 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 @@ -232,18 +252,18 @@ void ReadTItag(void) 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); + // 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; + shift2 = ((shift2>>24) | (shift3 << 8)) & 0x0ffff; // if r/w tag, check ident match - if ( shift3&(1<<15) ) { + 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 ) { + if (((shift3 >> 16) ^ shift0) & 0x7fff ) { DbpString("Error: Ident mismatch!"); } else { DbpString("Info: TI tag ident is valid"); @@ -258,7 +278,7 @@ void ReadTItag(void) // calculate CRC uint32_t crc=0; - crc = update_crc16(crc, (shift0)&0xff); + 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); @@ -268,7 +288,7 @@ void ReadTItag(void) 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); + (unsigned int)shift1, (unsigned int)shift0, (unsigned int)shift2 & 0xFFFF); if (crc != (shift2&0xffff)) { Dbprintf("Error: CRC mismatch, expected %x", (unsigned int)crc); } else { @@ -307,7 +327,7 @@ void AcquireTiType(void) 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 + #define TIBUFLEN 1250 // clear buffer memset(BigBuf,0,sizeof(BigBuf)); @@ -377,8 +397,9 @@ 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)&0xff); crc = update_crc16(crc, (idlo>>8)&0xff); crc = update_crc16(crc, (idlo>>16)&0xff); crc = update_crc16(crc, (idlo>>24)&0xff); @@ -388,7 +409,7 @@ void WriteTItag(uint32_t idhi, uint32_t idlo, uint16_t crc) crc = update_crc16(crc, (idhi>>24)&0xff); } Dbprintf("Writing to tag: %x%08x, crc=%x", - (unsigned int) idhi, (unsigned int) idlo, crc); + (unsigned int) idhi, (unsigned int) idlo, crc); // TI tags charge at 134.2Khz FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 88); //134.8Khz @@ -447,17 +468,18 @@ 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; - + #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)) { @@ -467,18 +489,18 @@ void SimulateTagLowFrequency(int period, int gap, int ledcontrol) } 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"); @@ -486,7 +508,7 @@ void SimulateTagLowFrequency(int period, int gap, int ledcontrol) } WDT_HIT(); } - + i++; if(i == period) { i = 0; @@ -606,237 +628,203 @@ void CmdHIDsimTAG(int hi, int lo, int ledcontrol) LED_A_OFF(); } -size_t fsk_demod(uint8_t * dest, size_t size) -{ - uint32_t last_transition = 0; - uint32_t idx = 1; - - // 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 - uint8_t threshold_value = 127; - - - // sync to first lo-hi transition, and threshold - - //Need to threshold first sample - if(dest[0] < threshold_value) dest[0] = 0; - else dest[0] = 1; - - size_t numBits = 0; - // count cycles between consecutive lo-hi transitions, there should be either 8 (fc/8) - // or 10 (fc/10) cycles but in practice due to noise etc we may end up with with anywhere - // between 7 to 11 cycles so fuzz it by treat anything <9 as 8 and anything else as 10 - for(idx = 1; idx < size; idx++) { - // threshold current value - if (dest[idx] < threshold_value) dest[idx] = 0; - else dest[idx] = 1; - - // Check for 0->1 transition - if (dest[idx-1] < dest[idx]) { // 0 -> 1 transition - - if (idx-last_transition < 9) { - dest[numBits]=1; - } else { - 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 -} - - -size_t aggregate_bits(uint8_t *dest,size_t size, uint8_t h2l_crossing_value,uint8_t l2h_crossing_value, uint8_t maxConsequtiveBits ) -{ - 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] ) { - n=(n+1) / h2l_crossing_value; - } else {// 0->1 crossing - n=(n+1) / l2h_crossing_value; - } - if (n == 0) n = 1; - - if(n < maxConsequtiveBits) - { - memset(dest+numBits, dest[idx-1] , n); - numBits += n; - } - n=0; - lastval=dest[idx]; - }//end for - - return numBits; - -} -// loop to capture raw HID waveform then FSK demodulate the TAG ID from it +// 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,idx=0; //, found=0; + 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()) { - // Configure to go in 125Khz listen mode - SetupToAcquireRawAdcSamples(0); - WDT_HIT(); if (ledcontrol) LED_A_ON(); - DoAcquisition125k_internal(true); - size = sizeof(BigBuf); - + DoAcquisition125k_internal(-1,true); // FSK demodulator - size = fsk_demod(dest, size); - WDT_HIT(); - - // we now have a set of cycle counts, loop over previous results and aggregate data into bit patterns - // 1->0 : fc/8 in sets of 6 - // 0->1 : fc/10 in sets of 5 - size = aggregate_bits(dest,size, 6,5,5); + size = HIDdemodFSK(dest, sizeof(BigBuf), &hi2, &hi, &lo); WDT_HIT(); - // 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; - 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; - } - //Dbprintf("Num shifts: %d ", numshifts); - // Hopefully, we read a tag and hit upon the next frame marker - if ( memcmp(dest+idx, frame_marker_mask, sizeof(frame_marker_mask)) == 0) - { - if (hi2 != 0){ - Dbprintf("TAG ID: %x%08x%08x (%d)", - (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF); + 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++; } - else { - Dbprintf("TAG ID: %x%08x (%d)", - (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF); + 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); } } - - // reset - hi2 = hi = lo = 0; - numshifts = 0; - }else - { - idx++; + 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(); } -uint32_t bytebits_to_byte(uint8_t* src, int numbits) -{ - uint32_t num = 0; - for(int i = 0 ; i < numbits ; i++) - { - num = (num << 1) | (*src); - src++; - } - return num; -} - - -void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol) +void CmdEM410xdemod(int findone, int *high, int *low, int ledcontrol) { uint8_t *dest = (uint8_t *)BigBuf; - size_t size=0, idx=0; - uint32_t code=0, code2=0; - + 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()) { - // Configure to go in 125Khz listen mode - SetupToAcquireRawAdcSamples(0); - WDT_HIT(); if (ledcontrol) LED_A_ON(); - DoAcquisition125k_internal(true); - size = sizeof(BigBuf); + 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(); - // FSK demodulator - size = fsk_demod(dest, size); + 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(); +} - // we now have a set of cycle counts, loop over previous results and aggregate data into bit patterns - // 1->0 : fc/8 in sets of 7 - // 0->1 : fc/10 in sets of 6 - size = aggregate_bits(dest, size, 7,6,13); +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(); - - //Handle the data - uint8_t mask[] = {0,0,0,0,0,0,0,0,0,1}; - for( idx=0; idx < size - 64; idx++) { - - if ( memcmp(dest + idx, mask, sizeof(mask)) ) continue; - - Dbprintf("%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]); - Dbprintf("%d%d%d%d%d%d%d%d",dest[idx+8], dest[idx+9], dest[idx+10],dest[idx+11],dest[idx+12],dest[idx+13],dest[idx+14],dest[idx+15]); - Dbprintf("%d%d%d%d%d%d%d%d",dest[idx+16],dest[idx+17],dest[idx+18],dest[idx+19],dest[idx+20],dest[idx+21],dest[idx+22],dest[idx+23]); - Dbprintf("%d%d%d%d%d%d%d%d",dest[idx+24],dest[idx+25],dest[idx+26],dest[idx+27],dest[idx+28],dest[idx+29],dest[idx+30],dest[idx+31]); - Dbprintf("%d%d%d%d%d%d%d%d",dest[idx+32],dest[idx+33],dest[idx+34],dest[idx+35],dest[idx+36],dest[idx+37],dest[idx+38],dest[idx+39]); - Dbprintf("%d%d%d%d%d%d%d%d",dest[idx+40],dest[idx+41],dest[idx+42],dest[idx+43],dest[idx+44],dest[idx+45],dest[idx+46],dest[idx+47]); - Dbprintf("%d%d%d%d%d%d%d%d",dest[idx+48],dest[idx+49],dest[idx+50],dest[idx+51],dest[idx+52],dest[idx+53],dest[idx+54],dest[idx+55]); - Dbprintf("%d%d%d%d%d%d%d%d",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); - - short version = bytebits_to_byte(dest+idx+14,4); - char unknown = bytebits_to_byte(dest+idx+19,8) ; - uint16_t number = bytebits_to_byte(dest+idx+36,9); - - Dbprintf("XSF(%02d)%02x:%d (%08x%08x)",version,unknown,number,code,code2); - if (ledcontrol) LED_D_OFF(); - - // if we're only looking for one tag + 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){ - LED_A_OFF(); + if (ledcontrol) LED_A_OFF(); + //LED_A_OFF(); return; - } + } + code=code2=0; + version=facilitycode=0; + number=0; + idx=0; } WDT_HIT(); } @@ -911,8 +899,9 @@ 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_READER); + FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); if (bit == 0) SpinDelayUs(WRITE_0); else @@ -924,10 +913,12 @@ void T55xxWriteBit(int bit) // 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; + //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_READER); + 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 @@ -940,11 +931,11 @@ void T55xxWriteBlock(uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t PwdMod // Opcode T55xxWriteBit(1); T55xxWriteBit(0); //Page 0 - if (PwdMode == 1){ - // Pwd - for (i = 0x80000000; i != 0; i >>= 1) - T55xxWriteBit(Pwd & i); - } + if (PwdMode == 1){ + // Pwd + for (i = 0x80000000; i != 0; i >>= 1) + T55xxWriteBit(Pwd & i); + } // Lock bit T55xxWriteBit(0); @@ -959,7 +950,7 @@ void T55xxWriteBlock(uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t PwdMod // 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_READER); + FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); SpinDelay(20); FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); } @@ -968,28 +959,29 @@ void T55xxWriteBlock(uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t PwdMod void T55xxReadBlock(uint32_t Block, uint32_t Pwd, uint8_t PwdMode) { uint8_t *dest = (uint8_t *)BigBuf; - int m=0, i=0; - + //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 + // 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_READER); - + 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 @@ -1003,11 +995,11 @@ void T55xxReadBlock(uint32_t Block, uint32_t Pwd, uint8_t PwdMode) // Block for (i = 0x04; i != 0; i >>= 1) T55xxWriteBit(Block & i); - - // Turn field on to read the response + + // Turn field on to read the response FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER); - + FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); + // Now do the acquisition i = 0; for(;;) { @@ -1018,13 +1010,13 @@ void T55xxReadBlock(uint32_t Block, uint32_t Pwd, uint8_t PwdMode) 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; + // if(dest[i] < 127) dest[i] = 0; else dest[i] = 1; i++; if (i >= m) break; } } - - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off + + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off LED_D_OFF(); DbpString("DONE!"); } @@ -1033,35 +1025,36 @@ void T55xxReadBlock(uint32_t Block, uint32_t Pwd, uint8_t PwdMode) 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 + // 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_READER); - + 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 + + // Turn field on to read the response FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER); - + FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); + // Now do the acquisition i = 0; for(;;) { @@ -1074,8 +1067,8 @@ void T55xxReadTrace(void){ if (i >= m) break; } } - - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off + + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off LED_D_OFF(); DbpString("DONE!"); } @@ -1086,141 +1079,141 @@ 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 - } - } - + + 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); - } - + 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); - + 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 @@ -1309,7 +1302,7 @@ void WriteEM410x(uint32_t card, uint32_t id_hi, uint32_t id_lo) // Fall through... case 64: clock = T55x7_BITRATE_RF_64; - break; + break; default: Dbprintf("Invalid clock rate: %d", clock); return; @@ -1317,20 +1310,20 @@ void WriteEM410x(uint32_t card, uint32_t id_hi, uint32_t id_lo) // Writing configuration for T55x7 tag T55xxWriteBlock(clock | - T55x7_MODULATION_MANCHESTER | - 2 << T55x7_MAXBLOCK_SHIFT, - 0, 0, 0); - } + 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); + 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); + (uint32_t)(id >> 32), (uint32_t)id); } // Clone Indala 64-bit tag by UID to T55x7 @@ -1343,15 +1336,15 @@ void CopyIndala64toT55x7(int hi, int lo) 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); + 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); + // T5567WriteBlock(0x603E1042,0); DbpString("DONE!"); -} +} void CopyIndala224toT55x7(int uid1, int uid2, int uid3, int uid4, int uid5, int uid6, int uid7) { @@ -1367,11 +1360,11 @@ void CopyIndala224toT55x7(int uid1, int uid2, int uid3, int uid4, int uid5, int 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); + 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); + // T5567WriteBlock(0x603E10E2,0); DbpString("DONE!"); @@ -1394,111 +1387,114 @@ int DemodPCF7931(uint8_t **outBlocks) { 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; + 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; + 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 (GraphBuffer[i-1] > GraphBuffer[i]) dir=0; - else dir = 1; - } - if(bitidx==255) - bitidx=0; - warnings = 0; - if(num_blocks == 4) break; + 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; @@ -1507,18 +1503,18 @@ int DemodPCF7931(uint8_t **outBlocks) { 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; + 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 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; - + if((Block[14] & 0x7f) <= 9 && Block[15] <= 9) + return 1; + return 0; } @@ -1533,106 +1529,106 @@ void ReadPCF7931() { 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; + 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); + if(Blocks[i][ALLOC]==1) + Dbprintf("%02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x", + Blocks[i][0], Blocks[i][1], Blocks[i][2], Blocks[i][3], Blocks[i][4], Blocks[i][5], Blocks[i][6], Blocks[i][7], + Blocks[i][8], Blocks[i][9], Blocks[i][10], Blocks[i][11], Blocks[i][12], Blocks[i][13], Blocks[i][14], Blocks[i][15]); + else + Dbprintf("", i); } Dbprintf("-----------------------------------------"); - + return ; } @@ -1657,20 +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++ = cmd; - cmd >>= 1; - *forward_ptr++ = cmd; - cmd >>= 1; - *forward_ptr++ = cmd; - cmd >>= 1; - *forward_ptr++ = cmd; - - return 6; //return number of emited bits + //-------------------------------------------------------------------- + + *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; + + return 6; //return number of emited bits } //==================================================================== @@ -1680,21 +1676,21 @@ uint8_t Prepare_Cmd( uint8_t cmd ) { //-------------------------------------------------------------------- uint8_t Prepare_Addr( uint8_t addr ) { - //-------------------------------------------------------------------- - - 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; - } - - *forward_ptr++ = (line_parity & 1); - - return 7; //return number of emited bits + //-------------------------------------------------------------------- + + 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; + } + + *forward_ptr++ = (line_parity & 1); + + return 7; //return number of emited bits } //==================================================================== @@ -1704,36 +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 } //==================================================================== @@ -1742,114 +1738,115 @@ uint8_t Prepare_Data( uint16_t data_low, uint16_t data_hi) { // fwd_bit_count set with number of bits to be sent //==================================================================== void SendForward(uint8_t fwd_bit_count) { - - fwd_write_ptr = forwardLink_data; - fwd_bit_sz = fwd_bit_count; - - LED_D_ON(); - - //Field on - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER); - - // 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_READER);//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_READER);//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; - - 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); - - //Wait for command to complete - SpinDelay(20); - + + 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 ); + + SendForward(fwd_bit_count); + + //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; - - //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 ); - - SendForward(fwd_bit_count); - - //Wait for write to complete - SpinDelay(20); - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off - LED_D_OFF(); + + uint8_t fwd_bit_count; + + //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 ); + + SendForward(fwd_bit_count); + + //Wait for write to complete + SpinDelay(20); + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off + LED_D_OFF(); }