X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/9983a929430904ddeb18ec3aded0afad964272ba..4be71814b4a7f5647a01d55882664c5889f4e605:/armsrc/lfops.c diff --git a/armsrc/lfops.c b/armsrc/lfops.c index 01b88178..c1f32f87 100644 --- a/armsrc/lfops.c +++ b/armsrc/lfops.c @@ -4,7 +4,7 @@ // the license. //----------------------------------------------------------------------------- // Miscellaneous routines for low frequency tag operations. -// Tags supported here so far are Texas Instruments (TI), HID +// Tags supported here so far are Texas Instruments (TI), HID, EM4x05, EM410x // Also routines for raw mode reading/simulating of LF waveform //----------------------------------------------------------------------------- @@ -17,7 +17,8 @@ #include "lfdemod.h" #include "lfsampling.h" #include "protocols.h" -#include "usb_cdc.h" //test +#include "usb_cdc.h" // for usb_poll_validate_length +#include "fpgaloader.h" /** * Function to do a modulation and then get samples. @@ -28,52 +29,104 @@ */ void ModThenAcquireRawAdcSamples125k(uint32_t delay_off, uint32_t period_0, uint32_t period_1, uint8_t *command) { + // start timer + StartTicks(); - int divisor_used = 95; // 125 KHz - // see if 'h' was specified + // use lf config settings + sample_config *sc = getSamplingConfig(); - if (command[strlen((char *) command) - 1] == 'h') - divisor_used = 88; // 134.8 KHz - - sample_config sc = { 0,0,1, divisor_used, 0}; - setSamplingConfig(&sc); - - /* Make sure the tag is reset */ + // Make sure the tag is reset FpgaDownloadAndGo(FPGA_BITSTREAM_LF); FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - SpinDelay(2500); + WaitMS(2500); - LFSetupFPGAForADC(sc.divisor, 1); + // clear read buffer (after fpga bitstream loaded...) + BigBuf_Clear_keep_EM(); - // And a little more time for the tag to fully power up - SpinDelay(2000); + // power on + LFSetupFPGAForADC(sc->divisor, 1); + // And a little more time for the tag to fully power up + WaitMS(2000); + // if delay_off = 0 then just bitbang 1 = antenna on 0 = off for respective periods. + bool bitbang = delay_off == 0; // now modulate the reader field - while(*command != '\0' && *command != ' ') { + + if (bitbang) { + // HACK it appears the loop and if statements take up about 7us so adjust waits accordingly... + uint8_t hack_cnt = 7; + if (period_0 < hack_cnt || period_1 < hack_cnt) { + DbpString("Warning periods cannot be less than 7us in bit bang mode"); + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); + LED_D_OFF(); + return; + } + + // hack2 needed--- it appears to take about 8-16us to turn the antenna back on + // leading to ~ 1 to 2 125khz samples extra in every off period + // so we should test for last 0 before next 1 and reduce period_0 by this extra amount... + // but is this time different for every antenna or other hw builds??? more testing needed + + // prime cmd_len to save time comparing strings while modulating + int cmd_len = 0; + while(command[cmd_len] != '\0' && command[cmd_len] != ' ') + cmd_len++; + + int counter = 0; + bool off = false; + for (counter = 0; counter < cmd_len; counter++) { + // if cmd = 0 then turn field off + if (command[counter] == '0') { + // if field already off leave alone (affects timing otherwise) + if (off == false) { + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); + LED_D_OFF(); + off = true; + } + // note we appear to take about 7us to switch over (or run the if statements/loop...) + WaitUS(period_0-hack_cnt); + // else if cmd = 1 then turn field on + } else { + // if field already on leave alone (affects timing otherwise) + if (off) { + FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); + LED_D_ON(); + off = false; + } + // note we appear to take about 7us to switch over (or run the if statements/loop...) + WaitUS(period_1-hack_cnt); + } + } + } else { // old mode of cmd read using delay as off period + while(*command != '\0' && *command != ' ') { + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); + LED_D_OFF(); + WaitUS(delay_off); + FpgaSendCommand(FPGA_CMD_SET_DIVISOR, sc->divisor); + FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); + LED_D_ON(); + if(*(command++) == '0') { + WaitUS(period_0); + } else { + WaitUS(period_1); + } + } FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); LED_D_OFF(); - SpinDelayUs(delay_off); - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, sc.divisor); - - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); - LED_D_ON(); - if(*(command++) == '0') - SpinDelayUs(period_0); - else - SpinDelayUs(period_1); + WaitUS(delay_off); + FpgaSendCommand(FPGA_CMD_SET_DIVISOR, sc->divisor); } - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - LED_D_OFF(); - SpinDelayUs(delay_off); - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, sc.divisor); FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); // now do the read - DoAcquisition_config(false); -} - + DoAcquisition_config(false, 0); + // Turn off antenna + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); + // tell client we are done + cmd_send(CMD_ACK,0,0,0,0,0); +} /* blank r/w tag data stream ...0000000000000000 01111111 @@ -214,8 +267,6 @@ void ReadTItag(void) } } - - void WriteTIbyte(uint8_t b) { int i = 0; @@ -250,7 +301,7 @@ void AcquireTiType(void) // clear buffer uint32_t *BigBuf = (uint32_t *)BigBuf_get_addr(); - memset(BigBuf,0,BigBuf_max_traceLen()/sizeof(uint32_t)); + BigBuf_Clear_ext(false); // Set up the synchronous serial port AT91C_BASE_PIOA->PIO_PDR = GPIO_SSC_DIN; @@ -312,16 +363,11 @@ void AcquireTiType(void) } } - - - // arguments: 64bit data split into 32bit idhi:idlo and optional 16bit crc // if crc provided, it will be written with the data verbatim (even if bogus) // 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); @@ -386,7 +432,7 @@ void WriteTItag(uint32_t idhi, uint32_t idlo, uint16_t crc) AcquireTiType(); FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - DbpString("Now use tiread to check"); + DbpString("Now use `lf ti read` to check"); } void SimulateTagLowFrequency(int period, int gap, int ledcontrol) @@ -394,7 +440,8 @@ void SimulateTagLowFrequency(int period, int gap, int ledcontrol) int i; uint8_t *tab = BigBuf_get_addr(); - FpgaDownloadAndGo(FPGA_BITSTREAM_LF); + //note FpgaDownloadAndGo destroys the bigbuf so be sure this is called before now... + //FpgaDownloadAndGo(FPGA_BITSTREAM_LF); FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_EDGE_DETECT); AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DOUT | GPIO_SSC_CLK; @@ -402,18 +449,25 @@ void SimulateTagLowFrequency(int period, int gap, int ledcontrol) 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) + #define SHORT_COIL() LOW(GPIO_SSC_DOUT) + #define OPEN_COIL() HIGH(GPIO_SSC_DOUT) i = 0; for(;;) { //wait until SSC_CLK goes HIGH + int ii = 0; while(!(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_CLK)) { - if(BUTTON_PRESS() || (usb_poll_validate_length() )) { - DbpString("Stopped"); - return; + //only check every 1000th time (usb_poll_validate_length on some systems was too slow) + if ( ii == 1000 ) { + if (BUTTON_PRESS() || usb_poll_validate_length() ) { + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); + DbpString("Stopped"); + return; + } + ii=0; } WDT_HIT(); + ii++; } if (ledcontrol) LED_D_ON(); @@ -425,13 +479,20 @@ void SimulateTagLowFrequency(int period, int gap, int ledcontrol) if (ledcontrol) LED_D_OFF(); + ii=0; //wait until SSC_CLK goes LOW while(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_CLK) { - if(BUTTON_PRESS()) { - DbpString("Stopped"); - return; + //only check every 1000th time (usb_poll_validate_length on some systems was too slow) + if ( ii == 1000 ) { + if (BUTTON_PRESS() || usb_poll_validate_length() ) { + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); + DbpString("Stopped"); + return; + } + ii=0; } WDT_HIT(); + ii++; } i++; @@ -443,6 +504,7 @@ void SimulateTagLowFrequency(int period, int gap, int ledcontrol) SpinDelayUs(gap); } } + } } @@ -507,7 +569,7 @@ static void fcAll(uint8_t fc, int *n, uint8_t clock, uint16_t *modCnt) uint8_t wavesPerClock = clock/fc; uint8_t mod = clock % fc; //modifier uint8_t modAdj = fc/mod; //how often to apply modifier - bool modAdjOk = !(fc % mod); //if (fc % mod==0) modAdjOk=TRUE; + bool modAdjOk = !(fc % mod); //if (fc % mod==0) modAdjOk=true; // loop through clock - step field clock for (uint8_t idx=0; idx < wavesPerClock; idx++){ // put 1/2 FC length 1's and 1/2 0's per field clock wave (to create the wave) @@ -532,7 +594,7 @@ static void fcAll(uint8_t fc, int *n, uint8_t clock, uint16_t *modCnt) // 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) +void CmdHIDsimTAG(int hi2, int hi, int lo, int ledcontrol) { int n=0, i=0; /* @@ -545,10 +607,13 @@ void CmdHIDsimTAG(int hi, int lo, int ledcontrol) 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. - USE lf simfsk for larger tags"); + if (hi2>0x0FFFFFFF) { + DbpString("Tags can only have 44 or 84 bits. - USE lf simfsk for larger tags"); return; } + // set LF so we don't kill the bigbuf we are setting with simulation data. + FpgaDownloadAndGo(FPGA_BITSTREAM_LF); + fc(0,&n); // special start of frame marker containing invalid bit sequences fc(8, &n); fc(8, &n); // invalid @@ -557,13 +622,35 @@ void CmdHIDsimTAG(int hi, int lo, int ledcontrol) 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 + if (hi2 > 0 || hi > 0xFFF){ + // manchester encode bits 91 to 64 (91-84 are part of the header) + for (i=27; i>=0; i--) { + if ((i%4)==3) fc(0,&n); + if ((hi2>>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 63 to 32 + for (i=31; 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 + } + } + } else { + // 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 + } } } @@ -599,6 +686,9 @@ void CmdFSKsimTAG(uint16_t arg1, uint16_t arg2, size_t size, uint8_t *BitStream) uint8_t clk = arg2 & 0xFF; uint8_t invert = (arg2 >> 8) & 1; + // set LF so we don't kill the bigbuf we are setting with simulation data. + FpgaDownloadAndGo(FPGA_BITSTREAM_LF); + for (i=0; i> 8) & 1; + // set LF so we don't kill the bigbuf we are setting with simulation data. + FpgaDownloadAndGo(FPGA_BITSTREAM_LF); + if (encoding==2){ //biphase uint8_t phase=0; for (i=0; i0 && lo>0 && (size==96 || size==192)){ + uint8_t bitlen = 0; + uint32_t fc = 0; + uint32_t cardnum = 0; + bool decoded = false; + // go over previously decoded manchester data and decode into usable tag ID - if (hi2 != 0){ //extra large HID tags 88/192 bits - 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 44/96 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); - } + if ((hi2 & 0x000FFFF) != 0){ //extra large HID tags 88/192 bits + uint32_t bp = hi2 & 0x000FFFFF; + bitlen = 63; + while (bp > 0) { + bp = bp >> 1; + bitlen++; } - 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); - } + } else if ((hi >> 6) > 0) { + uint32_t bp = hi; + bitlen = 31; + while (bp > 0) { + bp = bp >> 1; + bitlen++; + } + } else if (((hi >> 5) & 1) == 0) { + bitlen = 37; + } else if ((hi & 0x0000001F) > 0 ) { + uint32_t bp = (hi & 0x0000001F); + bitlen = 31; + while (bp > 0) { + bp = bp >> 1; + bitlen++; } - //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); + } else { + uint32_t bp = lo; + bitlen = 0; + while (bp > 0) { + bp = bp >> 1; + bitlen++; + } + } + switch (bitlen){ + case 26: + cardnum = (lo>>1)&0xFFFF; + fc = (lo>>17)&0xFF; + decoded = true; + break; + case 35: + cardnum = (lo>>1)&0xFFFFF; + fc = ((hi&1)<<11)|(lo>>21); + decoded = true; + break; } + + if (hi2 != 0) //extra large HID tags 88/192 bits + Dbprintf("TAG ID: %x%08x%08x (%d)", + (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF); + else + Dbprintf("TAG ID: %x%08x (%d)", + (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF); + + if (decoded) + Dbprintf("Format Len: %dbits - FC: %d - Card: %d", + (unsigned int) bitlen, (unsigned int) fc, (unsigned int) cardnum); + if (findone){ if (ledcontrol) LED_A_OFF(); + *high2 = hi2; *high = hi; *low = lo; - return; + break; } // reset } hi2 = hi = lo = idx = 0; WDT_HIT(); } + + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); DbpString("Stopped"); if (ledcontrol) LED_A_OFF(); } @@ -851,9 +970,10 @@ void CmdHIDdemodFSK(int findone, int *high, int *low, int ledcontrol) void CmdAWIDdemodFSK(int findone, int *high, int *low, int ledcontrol) { uint8_t *dest = BigBuf_get_addr(); - //const size_t sizeOfBigBuff = BigBuf_max_traceLen(); size_t size; - int idx=0; + int idx=0, dummyIdx=0; + //clear read buffer + BigBuf_Clear_keep_EM(); // Configure to go in 125Khz listen mode LFSetupFPGAForADC(95, true); @@ -864,75 +984,75 @@ void CmdAWIDdemodFSK(int findone, int *high, int *low, int ledcontrol) DoAcquisition_default(-1,true); // FSK demodulator - //size = sizeOfBigBuff; //variable size will change after demod so re initialize it before use size = 50*128*2; //big enough to catch 2 sequences of largest format - idx = AWIDdemodFSK(dest, &size); + idx = AWIDdemodFSK(dest, &size, &dummyIdx); - if (idx>0 && size==96){ - // Index map - // 0 10 20 30 40 50 60 - // | | | | | | | - // 01234567 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 - to 96 - // ----------------------------------------------------------------------------- - // 00000001 000 1 110 1 101 1 011 1 101 1 010 0 000 1 000 1 010 0 001 0 110 1 100 0 000 1 000 1 - // premable bbb o bbb o bbw o fff o fff o ffc o ccc o ccc o ccc o ccc o ccc o wxx o xxx o xxx o - to 96 - // |---26 bit---| |-----117----||-------------142-------------| - // b = format bit len, o = odd parity of last 3 bits - // f = facility code, c = card number - // w = wiegand parity - // (26 bit format shown) - - //get raw ID before removing parities - uint32_t rawLo = bytebits_to_byte(dest+idx+64,32); - uint32_t rawHi = bytebits_to_byte(dest+idx+32,32); - uint32_t rawHi2 = bytebits_to_byte(dest+idx,32); - - size = removeParity(dest, idx+8, 4, 1, 88); - // ok valid card found! - - // Index map - // 0 10 20 30 40 50 60 - // | | | | | | | - // 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456 - // ----------------------------------------------------------------------------- - // 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000 - // bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx - // |26 bit| |-117--| |-----142------| - // b = format bit len, o = odd parity of last 3 bits - // f = facility code, c = card number - // w = wiegand parity - // (26 bit format shown) - - uint32_t fc = 0; - uint32_t cardnum = 0; - uint32_t code1 = 0; - uint32_t code2 = 0; - uint8_t fmtLen = bytebits_to_byte(dest,8); - if (fmtLen==26){ - fc = bytebits_to_byte(dest+9, 8); - cardnum = bytebits_to_byte(dest+17, 16); - code1 = bytebits_to_byte(dest+8,fmtLen); - Dbprintf("AWID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi2, rawHi, rawLo); - } else { - cardnum = bytebits_to_byte(dest+8+(fmtLen-17), 16); - if (fmtLen>32){ - code1 = bytebits_to_byte(dest+8,fmtLen-32); - code2 = bytebits_to_byte(dest+8+(fmtLen-32),32); - Dbprintf("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, code2, rawHi2, rawHi, rawLo); - } else{ - code1 = bytebits_to_byte(dest+8,fmtLen); - Dbprintf("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo); - } - } - if (findone){ - if (ledcontrol) LED_A_OFF(); - return; + if (idx<=0 || size!=96) continue; + // Index map + // 0 10 20 30 40 50 60 + // | | | | | | | + // 01234567 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 - to 96 + // ----------------------------------------------------------------------------- + // 00000001 000 1 110 1 101 1 011 1 101 1 010 0 000 1 000 1 010 0 001 0 110 1 100 0 000 1 000 1 + // premable bbb o bbb o bbw o fff o fff o ffc o ccc o ccc o ccc o ccc o ccc o wxx o xxx o xxx o - to 96 + // |---26 bit---| |-----117----||-------------142-------------| + // b = format bit len, o = odd parity of last 3 bits + // f = facility code, c = card number + // w = wiegand parity + // (26 bit format shown) + + //get raw ID before removing parities + uint32_t rawLo = bytebits_to_byte(dest+idx+64,32); + uint32_t rawHi = bytebits_to_byte(dest+idx+32,32); + uint32_t rawHi2 = bytebits_to_byte(dest+idx,32); + + size = removeParity(dest, idx+8, 4, 1, 88); + if (size != 66) continue; + // ok valid card found! + + // Index map + // 0 10 20 30 40 50 60 + // | | | | | | | + // 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456 + // ----------------------------------------------------------------------------- + // 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000 + // bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx + // |26 bit| |-117--| |-----142------| + // b = format bit len, o = odd parity of last 3 bits + // f = facility code, c = card number + // w = wiegand parity + // (26 bit format shown) + + uint32_t fc = 0; + uint32_t cardnum = 0; + uint32_t code1 = 0; + uint32_t code2 = 0; + uint8_t fmtLen = bytebits_to_byte(dest,8); + if (fmtLen==26){ + fc = bytebits_to_byte(dest+9, 8); + cardnum = bytebits_to_byte(dest+17, 16); + code1 = bytebits_to_byte(dest+8,fmtLen); + Dbprintf("AWID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi2, rawHi, rawLo); + } else { + cardnum = bytebits_to_byte(dest+8+(fmtLen-17), 16); + if (fmtLen>32){ + code1 = bytebits_to_byte(dest+8,fmtLen-32); + code2 = bytebits_to_byte(dest+8+(fmtLen-32),32); + Dbprintf("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, code2, rawHi2, rawHi, rawLo); + } else{ + code1 = bytebits_to_byte(dest+8,fmtLen); + Dbprintf("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo); } - // reset } + if (findone){ + if (ledcontrol) LED_A_OFF(); + break; + } + // reset idx = 0; WDT_HIT(); } + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); DbpString("Stopped"); if (ledcontrol) LED_A_OFF(); } @@ -945,6 +1065,8 @@ void CmdEM410xdemod(int findone, int *high, int *low, int ledcontrol) int clk=0, invert=0, errCnt=0, maxErr=20; uint32_t hi=0; uint64_t lo=0; + //clear read buffer + BigBuf_Clear_keep_EM(); // Configure to go in 125Khz listen mode LFSetupFPGAForADC(95, true); @@ -985,13 +1107,14 @@ void CmdEM410xdemod(int findone, int *high, int *low, int ledcontrol) if (ledcontrol) LED_A_OFF(); *high=lo>>32; *low=lo & 0xFFFFFFFF; - return; + break; } } WDT_HIT(); hi = lo = size = idx = 0; clk = invert = errCnt = 0; } + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); DbpString("Stopped"); if (ledcontrol) LED_A_OFF(); } @@ -1004,6 +1127,9 @@ void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol) uint8_t version=0; uint8_t facilitycode=0; uint16_t number=0; + int dummyIdx=0; + //clear read buffer + BigBuf_Clear_keep_EM(); // Configure to go in 125Khz listen mode LFSetupFPGAForADC(95, true); @@ -1013,7 +1139,7 @@ void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol) DoAcquisition_default(-1,true); //fskdemod and get start index WDT_HIT(); - idx = IOdemodFSK(dest, BigBuf_max_traceLen()); + idx = IOdemodFSK(dest, BigBuf_max_traceLen(), &dummyIdx); if (idx<0) continue; //valid tag found @@ -1048,7 +1174,7 @@ void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol) //LED_A_OFF(); *high=code; *low=code2; - return; + break; } code=code2=0; version=facilitycode=0; @@ -1057,6 +1183,7 @@ void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol) WDT_HIT(); } + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); DbpString("Stopped"); if (ledcontrol) LED_A_OFF(); } @@ -1064,74 +1191,184 @@ void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol) /*------------------------------ * T5555/T5557/T5567/T5577 routines *------------------------------ - */ - -/* NOTE: T55x7/T5555 configuration register definitions moved to protocols.h */ - -/* + * NOTE: T55x7/T5555 configuration register definitions moved to protocols.h + * * Relevant communication times in microsecond * To compensate antenna falling times shorten the write times * and enlarge the gap ones. * Q5 tags seems to have issues when these values changes. */ + /* + // Original Timings for reference + #define START_GAP 31*8 // was 250 // SPEC: 1*8 to 50*8 - typ 15*8 (or 15fc) #define WRITE_GAP 20*8 // was 160 // SPEC: 1*8 to 20*8 - typ 10*8 (or 10fc) #define WRITE_0 18*8 // was 144 // SPEC: 16*8 to 32*8 - typ 24*8 (or 24fc) #define WRITE_1 50*8 // was 400 // SPEC: 48*8 to 64*8 - typ 56*8 (or 56fc) 432 for T55x7; 448 for E5550 -#define READ_GAP 52*8 +#define READ_GAP 15*8 +*/ -// VALUES TAKEN FROM EM4x function: SendForward -// START_GAP = 440; (55*8) cycles at 125Khz (8us = 1cycle) -// WRITE_GAP = 128; (16*8) -// WRITE_1 = 256 32*8; (32*8) +// Structure to hold Timing values. In future will be simplier to add user changable timings. +typedef struct { + uint16_t START_GAP; + uint16_t WRITE_GAP; + uint16_t WRITE_0; + uint16_t WRITE_1; + uint16_t WRITE_2; + uint16_t WRITE_3; + uint16_t READ_GAP; +} T55xx_Timing; -// These timings work for 4469/4269/4305 (with the 55*8 above) -// WRITE_0 = 23*8 , 9*8 SpinDelayUs(23*8); +/* + T5577 Timeing from datasheet for reference + + Fixed bit length + ---------------- + Normal Down Link Fast Downlink + Min Typ Max Min Typ Max + Start gap 8 15 50 8 15 50 + Write gap 8 10 20 8 10 20 + 0 data 16 24 32 8 12 16 + 1 data 48 56 64 24 28 32 + + + Long Leading Reference + ---------------------- + Normal Down Link Fast Downlink + Min Typ Max Min Typ Max + Start gap 8 10 50 8 10 50 + Write gap 8 10 20 8 10 20 + Reference(r) 152 160 168 140 144 148 + 136 + 0 data 132 + 0 data + 0 data r - 143 r - 136 r - 128 r - 135 r - 132 r - 124 + 1 data r - 111 r - 104 r - 96 r - 119 r - 116 r - 112 + + + Leading Zero Reference + ---------------------- + Normal Down Link Fast Downlink + Min Typ Max Min Typ Max + Start gap 8 10 50 8 10 50 + Write gap 8 10 20 8 10 20 + Reference(r) 12 - 72 8 - 68 + 0 data r - 7 r r + 8 r - 3 r r + 4 + 1 data r + 9 r + 16 r + 24 r + 5 r + 8 r + 12 + + + 1 of 4 Coding + ------------- + Normal Down Link Fast Downlink + Min Typ Max Min Typ Max + Start gap 8 10 50 8 10 50 + Write gap 8 10 20 8 10 20 + Reference(r) 8 - 68 12 - 72 + 00 data r - 7 r r + 8 r - 3 r r + 4 + 01 data r + 9 r + 16 r + 24 r + 5 r + 8 r + 12 + 10 data r + 25 r + 32 r + 40 r + 13 r + 16 r + 20 + 11 data r + 41 r + 48 r + 56 r + 21 r + 24 r + 28 + +*/ -// Sam7s has several timers, we will use the source TIMER_CLOCK1 (aka AT91C_TC_CLKS_TIMER_DIV1_CLOCK) -// TIMER_CLOCK1 = MCK/2, MCK is running at 48 MHz, Timer is running at 48/2 = 24 MHz -// Hitag units (T0) have duration of 8 microseconds (us), which is 1/125000 per second (carrier) -// T0 = TIMER_CLOCK1 / 125000 = 192 -// 1 Cycle = 8 microseconds(us) == 1 field clock +// Set Initial/Default Values. Note: *8 can occure when used. This should keep things simplier here. +T55xx_Timing T55xx_Timing_FixedBit = { 31 * 8 , 20 * 8 , 18 * 8 , 50 * 8 , 0 , 0 , 15 * 8 }; +T55xx_Timing T55xx_Timing_LLR = { 31 * 8 , 20 * 8 , 18 * 8 , 50 * 8 , 0 , 0 , 15 * 8 }; +T55xx_Timing T55xx_Timing_Leading0 = { 31 * 8 , 20 * 8 , 18 * 8 , 40 * 8 , 0 , 0 , 15 * 8 }; +T55xx_Timing T55xx_Timing_1of4 = { 31 * 8 , 20 * 8 , 18 * 8 , 34 * 8 , 50 * 8 , 66 * 8 , 15 * 8 }; + + +// Some defines for readability +#define T55xx_LongLeadingReference 4 // Value to tell Write Bit to send long reference +#define T55xx_DLMode_Fixed 0 // Default Mode +#define T55xx_DLMode_LLR 1 // Long Leading Reference +#define T55xx_DLMode_Leading0 2 // Leading Zero +#define T55xx_DLMode_1of4 3 // 1 of 4 void TurnReadLFOn(int delay) { FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); // Give it a bit of time for the resonant antenna to settle. - SpinDelayUs(delay); //155*8 //50*8 + WaitUS(delay); //155*8 //50*8 } // Write one bit to card -void T55xxWriteBit(int bit) { - if (!bit) - TurnReadLFOn(WRITE_0); - else - TurnReadLFOn(WRITE_1); +void T55xxWriteBit(int bit, T55xx_Timing *Timings) { + + // If bit = 4 Send Long Leading Reference which is 138 + WRITE_0 + + switch (bit){ + case 0 : TurnReadLFOn(Timings->WRITE_0); break; // Send bit 0/00 + case 1 : TurnReadLFOn(Timings->WRITE_1); break; // Send bit 1/01 + case 2 : TurnReadLFOn(Timings->WRITE_2); break; // Send bits 10 + case 3 : TurnReadLFOn(Timings->WRITE_3); break; // Send bits 11 + case 4 : TurnReadLFOn(Timings->WRITE_0 + (136 * 8)); break; // Send Long Leading Reference + } FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - SpinDelayUs(WRITE_GAP); + WaitUS(Timings->WRITE_GAP); +} + + +// Function to abstract an Arbitrary length byte array to store bit pattern. +// bit_array - Array to hold data/bit pattern +// start_offset - bit location to start storing new bits. +// data - upto 32 bits of data to store +// num_bits - how many bits (low x bits of data) Max 32 bits at a time +// max_len - how many bytes can the bit_array hold (ensure no buffer overflow) +// returns "Next" bit offset / bits stored (for next store) +int T55xx_SetBits (uint8_t *bit_array, int start_offset, uint32_t data , int num_bits, int max_len) +{ + int bit,byte_idx, bit_idx; + int offset; + int NextOffset = start_offset; + + // Check if data will fit. + if ((start_offset + num_bits) <= (max_len*8)) { + + // Loop through the data and store + for (offset = (num_bits-1); offset >= 0; offset--) { + + bit = (data >> offset) & 1; // Get data bit value (0/1) + byte_idx = (NextOffset / 8); // Get Array Byte Index to Store + bit_idx = NextOffset - (byte_idx * 8); // Get Bit Index to set/clr + + // If set (1) we OR, if clear (0) we AND with inverse + // Dbprintf ("Add Bit : %d at byte %d bit %d",bit,byte_idx,bit_idx); + if (bit == 1) + bit_array[byte_idx] |= (1 << bit_idx); // Set the bit to 1 + + else + bit_array[byte_idx] &= (0xff ^ (1 << bit_idx)); // Set the bit to 0 (clr) + + NextOffset++; + } + } + else + Dbprintf ("Too Many Bits to fit into bit buffer"); + return NextOffset; } // Send T5577 reset command then read stream (see if we can identify the start of the stream) void T55xxResetRead(void) { LED_A_ON(); //clear buffer now so it does not interfere with timing later - BigBuf_Clear_ext(false); + BigBuf_Clear_keep_EM(); // Set up FPGA, 125kHz LFSetupFPGAForADC(95, true); - + StartTicks(); + // make sure tag is fully powered up... + WaitMS(5); + // Trigger T55x7 in mode. FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - SpinDelayUs(START_GAP); + WaitUS(T55xx_Timing_FixedBit.START_GAP); // reset tag - op code 00 - T55xxWriteBit(0); - T55xxWriteBit(0); + T55xxWriteBit(0,&T55xx_Timing_FixedBit); + T55xxWriteBit(0,&T55xx_Timing_FixedBit); - // Turn field on to read the response - TurnReadLFOn(READ_GAP); + TurnReadLFOn(T55xx_Timing_FixedBit.READ_GAP); // Acquisition - doT55x7Acquisition(BigBuf_max_traceLen()); + DoPartialAcquisition(0, true, BigBuf_max_traceLen(), 0); // Turn the field off FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off @@ -1139,105 +1376,220 @@ void T55xxResetRead(void) { LED_A_OFF(); } -// Write one card block in page 0, no lock -void T55xxWriteBlockExt(uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t arg) { - LED_A_ON(); - bool PwdMode = arg & 0x1; - uint8_t Page = (arg & 0x2)>>1; - uint32_t i = 0; +// Send one downlink command to the card +void T55xx_SendCMD (uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t arg) { //, bool read_cmd) {//, struct T55xx_Timing *Timing) { + + /* + arg bits + xxxxxxx1 0x01 PwdMode + xxxxxx1x 0x02 Page + xxxxx1xx 0x04 testMode + xxx11xxx 0x18 downlink mode + xx1xxxxx 0x20 reg_readmode + x1xxxxxx 0x40 called for a read, so no data packet + + */ + bool PwdMode = ((arg & 0x01) == 0x01); + uint8_t Page = (arg & 0x02) >> 1; + bool testMode = ((arg & 0x04) == 0x04); + uint8_t downlink_mode = (arg >> 3) & 0x03;; + bool reg_readmode = ((arg & 0x20) == 0x20); + bool read_cmd = ((arg & 0x40) == 0x40); + + int i = 0; + uint8_t BitStream[10]; // Max Downlink Command size ~75 bits, so 10 bytes (80 bits) + uint8_t BitStreamLen; + int byte_idx, bit_idx; + T55xx_Timing *Timing; + + + // Assigning Downlink Timeing for write + switch (downlink_mode) + { + case T55xx_DLMode_Fixed : Timing = &T55xx_Timing_FixedBit; break; + case T55xx_DLMode_LLR : Timing = &T55xx_Timing_LLR; break; + case T55xx_DLMode_Leading0 : Timing = &T55xx_Timing_Leading0; break; + case T55xx_DLMode_1of4 : Timing = &T55xx_Timing_1of4; break; + default: + Timing = &T55xx_Timing_FixedBit; + } + + // Build Bit Stream to send. + memset (BitStream,0x00,sizeof(BitStream)); + + BitStreamLen = 0; + + // Add Leading 0 and 1 of 4 reference bit + if ((downlink_mode == T55xx_DLMode_Leading0) || (downlink_mode == T55xx_DLMode_1of4)) + BitStreamLen = T55xx_SetBits (BitStream, BitStreamLen, 0, 1,sizeof(BitStream)); + + // Add extra reference 0 for 1 of 4 + if (downlink_mode == T55xx_DLMode_1of4) + BitStreamLen = T55xx_SetBits (BitStream, BitStreamLen, 0, 1,sizeof(BitStream)); + + // Add Opcode + if (testMode) Dbprintf("TestMODE"); + BitStreamLen = T55xx_SetBits (BitStream, BitStreamLen,testMode ? 0 : 1 , 1,sizeof(BitStream)); + BitStreamLen = T55xx_SetBits (BitStream, BitStreamLen,testMode ? 1 : Page , 1,sizeof(BitStream)); + + if (PwdMode) { + + // Leading 0 and 1 of 4 00 fixed bits if passsword used + if ((downlink_mode == T55xx_DLMode_Leading0) || (downlink_mode == T55xx_DLMode_1of4)) { + BitStreamLen = T55xx_SetBits (BitStream, BitStreamLen, 0, 1,sizeof(BitStream)); + BitStreamLen = T55xx_SetBits (BitStream, BitStreamLen, 0, 1,sizeof(BitStream)); + } + BitStreamLen = T55xx_SetBits (BitStream, BitStreamLen, Pwd, 32,sizeof(BitStream)); + } + // Add Lock bit + BitStreamLen = T55xx_SetBits (BitStream, BitStreamLen, 0, 1,sizeof(BitStream)); + + // Add Data if a write command + if (!read_cmd) BitStreamLen = T55xx_SetBits (BitStream, BitStreamLen, Data, 32,sizeof(BitStream)); + + // Add Address + if (!reg_readmode) BitStreamLen = T55xx_SetBits (BitStream, BitStreamLen, Block, 3,sizeof(BitStream)); + + + + // Send Bits to T55xx + // Set up FPGA, 125kHz LFSetupFPGAForADC(95, true); - + StartTicks(); + // make sure tag is fully powered up... + WaitMS(5); // Trigger T55x7 in mode. FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - SpinDelayUs(START_GAP); + WaitUS(Timing->START_GAP); - // Opcode 10 - T55xxWriteBit(1); - T55xxWriteBit(Page); //Page 0 - if (PwdMode){ - // Send Pwd - for (i = 0x80000000; i != 0; i >>= 1) - T55xxWriteBit(Pwd & i); - } - // Send Lock bit - T55xxWriteBit(0); - // Send Data - for (i = 0x80000000; i != 0; i >>= 1) - T55xxWriteBit(Data & i); + // If long leading 0 send long reference pulse + if (downlink_mode == T55xx_DLMode_LLR) + T55xxWriteBit (T55xx_LongLeadingReference,Timing); // Send Long Leading Start Reference - // Send Block number - for (i = 0x04; i != 0; i >>= 1) - T55xxWriteBit(Block & i); + uint8_t SendBits; + + if (downlink_mode == T55xx_DLMode_1of4) { // 1 of 4 need to send 2 bits at a time + for (i = 0; i < BitStreamLen; i+=2) { + byte_idx = i / 8; + bit_idx = i - (byte_idx * 8); + SendBits = ((BitStream[byte_idx] >> bit_idx) & 1) << 1; + + byte_idx = (i+1) / 8; + bit_idx = (i+1) - (byte_idx * 8); + SendBits += (BitStream[byte_idx] >> bit_idx) & 1; + + T55xxWriteBit (SendBits,Timing); + } + } + else { + for (i = 0; i < BitStreamLen; i++) { + byte_idx = i / 8; + bit_idx = i - (byte_idx * 8); + SendBits = (BitStream[byte_idx] >> bit_idx) & 1; + T55xxWriteBit (SendBits,Timing); + } + } + +} + +// Write one card block in page 0, no lock +void T55xxWriteBlock(uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t arg) { + /* + arg bits + xxxxxxx1 0x01 PwdMode + xxxxxx1x 0x02 Page + xxxxx1xx 0x04 testMode + xxx11xxx 0x18 downlink mode + xx1xxxxx 0x20 reg_readmode + x1xxxxxx 0x40 called for a read, so no data packet + */ + + bool testMode = ((arg & 0x04) == 0x04); + arg &= (0xff ^ 0x40); // Called for a write, so ensure it is clear/0 + + LED_A_ON (); + T55xx_SendCMD (Data, Block, Pwd, arg) ;//, false); // Perform write (nominal is 5.6 ms for T55x7 and 18ms for E5550, // so wait a little more) - TurnReadLFOn(20 * 1000); + + // "there is a clock delay before programming" + // - programming takes ~5.6ms for t5577 ~18ms for E5550 or t5567 + // so we should wait 1 clock + 5.6ms then read response? + // but we need to know we are dealing with t5577 vs t5567 vs e5550 (or q5) marshmellow... + if (testMode) { + //TESTMODE TIMING TESTS: + // <566us does nothing + // 566-568 switches between wiping to 0s and doing nothing + // 5184 wipes and allows 1 block to be programmed. + // indefinite power on wipes and then programs all blocks with bitshifted data sent. + TurnReadLFOn(5184); + + } else { + TurnReadLFOn(20 * 1000); //could attempt to do a read to confirm write took // as the tag should repeat back the new block // until it is reset, but to confirm it we would - // need to know the current block 0 config mode + // need to know the current block 0 config mode for + // modulation clock an other details to demod the response... + // response should be (for t55x7) a 0 bit then (ST if on) + // block data written in on repeat until reset. + //DoPartialAcquisition(20, true, 12000); + } // turn field off FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - LED_A_OFF(); -} - -// Write one card block in page 0, no lock -void T55xxWriteBlock(uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t arg) { - T55xxWriteBlockExt(Data, Block, Pwd, arg); + cmd_send(CMD_ACK,0,0,0,0,0); + + LED_A_OFF (); } -// Read one card block in page 0 -void T55xxReadBlock(uint16_t arg0, uint8_t Block, uint32_t Pwd) { +// Read one card block in page [page] +void T55xxReadBlock (uint16_t arg0, uint8_t Block, uint32_t Pwd) {//, struct T55xx_Timing *Timing) { + LED_A_ON(); - bool PwdMode = arg0 & 0x1; - uint8_t Page = (arg0 & 0x2) >> 1; - uint32_t i = 0; - bool RegReadMode = (Block == 0xFF); - //clear buffer now so it does not interfere with timing later - BigBuf_Clear_ext(false); + /* + arg bits + xxxxxxx1 0x01 PwdMode + xxxxxx1x 0x02 Page + xxxxx1xx 0x04 testMode + xxx11xxx 0x18 downlink mode + xx1xxxxx 0x20 reg_readmode + x1xxxxxx 0x40 called for a read, so no data packet + */ + + // Set Read Flag to ensure SendCMD does not add "data" to the packet + arg0 |= 0x40; + + if (Block == 0xff) arg0 |= 0x20; + //make sure block is at max 7 Block &= 0x7; - - // Set up FPGA, 125kHz to power up the tag - LFSetupFPGAForADC(95, true); - - // Trigger T55x7 Direct Access Mode with start gap - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - SpinDelayUs(START_GAP); - - // Opcode 1[page] - T55xxWriteBit(1); - T55xxWriteBit(Page); //Page 0 - - if (PwdMode){ - // Send Pwd - for (i = 0x80000000; i != 0; i >>= 1) - T55xxWriteBit(Pwd & i); - } - // Send a zero bit separation - T55xxWriteBit(0); - - // Send Block number (if direct access mode) - if (!RegReadMode) - for (i = 0x04; i != 0; i >>= 1) - T55xxWriteBit(Block & i); - + //clear buffer now so it does not interfere with timing later + BigBuf_Clear_ext(false); + + T55xx_SendCMD (0, Block, Pwd, arg0); //, true); + + // Turn field on to read the response - TurnReadLFOn(READ_GAP); + // 137*8 seems to get to the start of data pretty well... + // but we want to go past the start and let the repeating data settle in... + TurnReadLFOn(210*8); // Acquisition - doT55x7Acquisition(12000); + // Now do the acquisition + DoPartialAcquisition(0, true, 12000, 0); // Turn the field off FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off cmd_send(CMD_ACK,0,0,0,0,0); + LED_A_OFF(); } @@ -1247,18 +1599,22 @@ void T55xxWakeUp(uint32_t Pwd){ // Set up FPGA, 125kHz LFSetupFPGAForADC(95, true); + StartTicks(); + // make sure tag is fully powered up... + WaitMS(5); // Trigger T55x7 Direct Access Mode FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - SpinDelayUs(START_GAP); + WaitUS(T55xx_Timing_FixedBit.START_GAP); // Opcode 10 - T55xxWriteBit(1); - T55xxWriteBit(0); //Page 0 + T55xxWriteBit(1,&T55xx_Timing_FixedBit); + T55xxWriteBit(0,&T55xx_Timing_FixedBit); //Page 0 // Send Pwd + for (i = 0x80000000; i != 0; i >>= 1) - T55xxWriteBit(Pwd & i); + T55xxWriteBit(Pwd & i,&T55xx_Timing_FixedBit); // Turn and leave field on to let the begin repeating transmission TurnReadLFOn(20*1000); @@ -1269,15 +1625,14 @@ void T55xxWakeUp(uint32_t Pwd){ void WriteT55xx(uint32_t *blockdata, uint8_t startblock, uint8_t numblocks) { // write last block first and config block last (if included) for (uint8_t i = numblocks+startblock; i > startblock; i--) { - //Dbprintf("write- Blk: %d, d:%08X",i-1,blockdata[i-1]); - T55xxWriteBlockExt(blockdata[i-1],i-1,0,0); + T55xxWriteBlock(blockdata[i-1],i-1,0,0);//,false); //,&T55xx_Timing_FixedBit); + // T55xx_SendCMD (blockdata[i-1],i-1,0,0);//,false); //,&T55xx_Timing_FixedBit); } } -// Copy HID id to card and setup block 0 config -void CopyHIDtoT55x7(uint32_t hi2, uint32_t hi, uint32_t lo, uint8_t longFMT) { +// Copy a HID-like card (e.g. HID Proximity, Paradox) to a T55x7 compatible card +void CopyHIDtoT55x7(uint32_t hi2, uint32_t hi, uint32_t lo, uint8_t longFMT, uint8_t preamble) { uint32_t data[] = {0,0,0,0,0,0,0}; - //int data1=0, data2=0, data3=0, data4=0, data5=0, data6=0; //up to six blocks for long format uint8_t last_block = 0; if (longFMT) { @@ -1288,15 +1643,15 @@ void CopyHIDtoT55x7(uint32_t hi2, uint32_t hi, uint32_t lo, uint8_t longFMT) { } // Build the 6 data blocks for supplied 84bit ID last_block = 6; - // load preamble (1D) & long format identifier (9E manchester encoded) - data[1] = 0x1D96A900 | (manchesterEncode2Bytes((hi2 >> 16) & 0xF) & 0xFF); + // load preamble & long format identifier (9E manchester encoded) + data[1] = (preamble << 24) | 0x96A900 | (manchesterEncode2Bytes((hi2 >> 16) & 0xF) & 0xFF); // load raw id from hi2, hi, lo to data blocks (manchester encoded) data[2] = manchesterEncode2Bytes(hi2 & 0xFFFF); data[3] = manchesterEncode2Bytes(hi >> 16); data[4] = manchesterEncode2Bytes(hi & 0xFFFF); data[5] = manchesterEncode2Bytes(lo >> 16); data[6] = manchesterEncode2Bytes(lo & 0xFFFF); - } else { + } else { // Ensure no more than 44 bits supplied if (hi>0xFFF) { DbpString("Tags can only have 44 bits."); @@ -1305,7 +1660,7 @@ void CopyHIDtoT55x7(uint32_t hi2, uint32_t hi, uint32_t lo, uint8_t longFMT) { // Build the 3 data blocks for supplied 44bit ID last_block = 3; // load preamble - data[1] = 0x1D000000 | (manchesterEncode2Bytes(hi) & 0xFFFFFF); + data[1] = (preamble << 24) | (manchesterEncode2Bytes(hi) & 0xFFFFFF); data[2] = manchesterEncode2Bytes(lo >> 16); data[3] = manchesterEncode2Bytes(lo & 0xFFFF); } @@ -1358,15 +1713,24 @@ void CopyIndala224toT55x7(uint32_t uid1, uint32_t uid2, uint32_t uid3, uint32_t //Program the 7 data blocks for supplied 224bit UID uint32_t data[] = {0, uid1, uid2, uid3, uid4, uid5, uid6, uid7}; // and the block 0 for Indala224 format - //Config for Indala (RF/32;PSK1 with RF/2;Maxblock=7) - data[0] = T55x7_BITRATE_RF_32 | T55x7_MODULATION_PSK1 | (7 << T55x7_MAXBLOCK_SHIFT); + //Config for Indala (RF/32;PSK2 with RF/2;Maxblock=7) + data[0] = T55x7_BITRATE_RF_32 | T55x7_MODULATION_PSK2 | (7 << T55x7_MAXBLOCK_SHIFT); //TODO add selection of chip for Q5 or T55x7 - // data[0] = (((32-2)/2)<>1)<>32, id & 0xFFFFFFFF}; + uint32_t data[] = {0, (uint32_t)(id>>32), (uint32_t)(id & 0xFFFFFFFF)}; clock = (card & 0xFF00) >> 8; clock = (clock == 0) ? 64 : clock; @@ -1445,8 +1809,7 @@ void WriteEM410x(uint32_t card, uint32_t id_hi, uint32_t id_lo) { } data[0] = clock | T55x7_MODULATION_MANCHESTER | (2 << T55x7_MAXBLOCK_SHIFT); } else { //t5555 (Q5) - clock = (clock-2)>>1; //n = (RF-2)/2 - data[0] = (clock << T5555_BITRATE_SHIFT) | T5555_MODULATION_MANCHESTER | (2 << T5555_MAXBLOCK_SHIFT); + data[0] = T5555_SET_BITRATE(clock) | T5555_MODULATION_MANCHESTER | (2 << T5555_MAXBLOCK_SHIFT); } WriteT55xx(data, 0, 3); @@ -1464,7 +1827,6 @@ void WriteEM410x(uint32_t card, uint32_t id_hi, uint32_t id_lo) { #define FWD_CMD_READ 0x9 #define FWD_CMD_DISABLE 0x5 - uint8_t forwardLink_data[64]; //array of forwarded bits uint8_t * forward_ptr; //ptr for forward message preparation uint8_t fwd_bit_sz; //forwardlink bit counter @@ -1475,8 +1837,15 @@ uint8_t * fwd_write_ptr; //forwardlink bit pointer // see EM4469 spec //==================================================================== //-------------------------------------------------------------------- +// VALUES TAKEN FROM EM4x function: SendForward +// START_GAP = 440; (55*8) cycles at 125Khz (8us = 1cycle) +// WRITE_GAP = 128; (16*8) +// WRITE_1 = 256 32*8; (32*8) + +// These timings work for 4469/4269/4305 (with the 55*8 above) +// WRITE_0 = 23*8 , 9*8 SpinDelayUs(23*8); + uint8_t Prepare_Cmd( uint8_t cmd ) { - //-------------------------------------------------------------------- *forward_ptr++ = 0; //start bit *forward_ptr++ = 0; //second pause for 4050 code @@ -1496,10 +1865,7 @@ uint8_t Prepare_Cmd( uint8_t cmd ) { // prepares address bits // see EM4469 spec //==================================================================== - -//-------------------------------------------------------------------- uint8_t Prepare_Addr( uint8_t addr ) { - //-------------------------------------------------------------------- register uint8_t line_parity; @@ -1520,10 +1886,7 @@ uint8_t Prepare_Addr( uint8_t addr ) { // prepares data bits intreleaved with parity bits // see EM4469 spec //==================================================================== - -//-------------------------------------------------------------------- uint8_t Prepare_Data( uint16_t data_low, uint16_t data_hi) { - //-------------------------------------------------------------------- register uint8_t line_parity; register uint8_t column_parity; @@ -1565,31 +1928,27 @@ void SendForward(uint8_t fwd_bit_count) { fwd_write_ptr = forwardLink_data; fwd_bit_sz = fwd_bit_count; - LED_D_ON(); - - // Set up FPGA, 125kHz + // Set up FPGA, 125kHz or 95 divisor LFSetupFPGAForADC(95, true); // 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 + WaitUS(55*8); //55 cycles off (8us each)for 4305 //another reader has 37 here... FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);//field on - SpinDelayUs(16*8); //16 cycles on (8us each) + WaitUS(18*8); //18 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) + WaitUS(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 + WaitUS(23*8); //23 cycles off (8us each) FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);//field on - SpinDelayUs(9*8); //16 cycles on (8us each) + WaitUS(18*8); //18 cycles on (8us each) } } } @@ -1606,19 +1965,17 @@ void EM4xLogin(uint32_t Password) { //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 = BigBuf_get_addr(); - uint16_t bufferlength = BigBuf_max_traceLen(); - uint32_t i = 0; // Clear destination buffer before sending the command - memset(dest, 0x80, bufferlength); + BigBuf_Clear_ext(false); + LED_A_ON(); + StartTicks(); //If password mode do login if (PwdMode == 1) EM4xLogin(Pwd); @@ -1626,36 +1983,29 @@ void EM4xReadWord(uint8_t Address, uint32_t Pwd, uint8_t PwdMode) { fwd_bit_count = Prepare_Cmd( FWD_CMD_READ ); fwd_bit_count += Prepare_Addr( Address ); - // 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); - + WaitUS(400); // 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 >= bufferlength) break; - } - } + DoPartialAcquisition(20, true, 6000, 1000); + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off + LED_A_OFF(); cmd_send(CMD_ACK,0,0,0,0,0); - LED_D_OFF(); } -void EM4xWriteWord(uint32_t Data, uint8_t Address, uint32_t Pwd, uint8_t PwdMode) { - +void EM4xWriteWord(uint32_t flag, uint32_t Data, uint32_t Pwd) { + + bool PwdMode = (flag & 0xF); + uint8_t Address = (flag >> 8) & 0xFF; uint8_t fwd_bit_count; + //clear buffer now so it does not interfere with timing later + BigBuf_Clear_ext(false); + + LED_A_ON(); + StartTicks(); //If password mode do login - if (PwdMode == 1) EM4xLogin(Pwd); + if (PwdMode) EM4xLogin(Pwd); forward_ptr = forwardLink_data; fwd_bit_count = Prepare_Cmd( FWD_CMD_WRITE ); @@ -1665,7 +2015,72 @@ void EM4xWriteWord(uint32_t Data, uint8_t Address, uint32_t Pwd, uint8_t PwdMode SendForward(fwd_bit_count); //Wait for write to complete - SpinDelay(20); + //SpinDelay(10); + + WaitUS(6500); + //Capture response if one exists + DoPartialAcquisition(20, true, 6000, 1000); + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off - LED_D_OFF(); + LED_A_OFF(); + cmd_send(CMD_ACK,0,0,0,0,0); +} +/* +Reading a COTAG. + +COTAG needs the reader to send a startsequence and the card has an extreme slow datarate. +because of this, we can "sample" the data signal but we interpreate it to Manchester direct. + +READER START SEQUENCE: +burst 800 us, gap 2.2 msecs +burst 3.6 msecs gap 2.2 msecs +burst 800 us gap 2.2 msecs +pulse 3.6 msecs + +This triggers a COTAG tag to response +*/ +void Cotag(uint32_t arg0) { + +#define OFF { FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); WaitUS(2035); } +#define ON(x) { FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); WaitUS((x)); } + + uint8_t rawsignal = arg0 & 0xF; + + LED_A_ON(); + + // Switching to LF image on FPGA. This might empty BigBuff + FpgaDownloadAndGo(FPGA_BITSTREAM_LF); + + //clear buffer now so it does not interfere with timing later + BigBuf_Clear_ext(false); + + // Set up FPGA, 132kHz to power up the tag + FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 89); + FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); + + // 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(FPGA_MAJOR_MODE_LF_ADC); + + // start clock - 1.5ticks is 1us + StartTicks(); + + //send COTAG start pulse + ON(740) OFF + ON(3330) OFF + ON(740) OFF + ON(1000) + + switch(rawsignal) { + case 0: doCotagAcquisition(50000); break; + case 1: doCotagAcquisitionManchester(); break; + case 2: DoAcquisition_config(true, 0); break; + } + + // Turn the field off + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off + cmd_send(CMD_ACK,0,0,0,0,0); + LED_A_OFF(); }