X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/75465377b93c9a27450a186342e9cfd2a84b4173..711ae19fca5bce2bf76817139e0c371d22e0d452:/armsrc/iso15693.c diff --git a/armsrc/iso15693.c b/armsrc/iso15693.c index 39d9effb..1e9a3b5b 100644 --- a/armsrc/iso15693.c +++ b/armsrc/iso15693.c @@ -58,14 +58,12 @@ // *) document all the functions -#include "../include/proxmark3.h" +#include "proxmark3.h" #include "util.h" #include "apps.h" #include "string.h" -#include "../common/iso15693tools.h" -#include "../common/cmd.h" - -#define arraylen(x) (sizeof(x)/sizeof((x)[0])) +#include "iso15693tools.h" +#include "cmd.h" /////////////////////////////////////////////////////////////////////// // ISO 15693 Part 2 - Air Interface @@ -81,7 +79,7 @@ #define AddCrc(data,datalen) Iso15693AddCrc(data,datalen) #define sprintUID(target,uid) Iso15693sprintUID(target,uid) -int DEBUG=0; +int DEBUG = 0; // --------------------------- @@ -99,9 +97,8 @@ static void CodeIso15693AsReader(uint8_t *cmd, int n) ToSendReset(); // Give it a bit of slack at the beginning - for(i = 0; i < 24; i++) { + for(i = 0; i < 24; i++) ToSendStuffBit(1); - } // SOF for 1of4 ToSendStuffBit(0); @@ -166,9 +163,8 @@ static void CodeIso15693AsReader(uint8_t *cmd, int n) ToSendStuffBit(1); // And slack at the end, too. - for(i = 0; i < 24; i++) { + for(i = 0; i < 24; i++) ToSendStuffBit(1); - } } // encode data using "1 out of 256" sheme @@ -181,9 +177,8 @@ static void CodeIso15693AsReader256(uint8_t *cmd, int n) ToSendReset(); // Give it a bit of slack at the beginning - for(i = 0; i < 24; i++) { + for(i = 0; i < 24; i++) ToSendStuffBit(1); - } // SOF for 1of256 ToSendStuffBit(0); @@ -196,8 +191,8 @@ static void CodeIso15693AsReader256(uint8_t *cmd, int n) ToSendStuffBit(0); for(i = 0; i < n; i++) { - for (j = 0; j<=255; j++) { - if (cmd[i]==j) { + for (j = 0; j <= 255; j++) { + if (cmd[i] == j) { ToSendStuffBit(1); ToSendStuffBit(0); } else { @@ -213,9 +208,8 @@ static void CodeIso15693AsReader256(uint8_t *cmd, int n) ToSendStuffBit(1); // And slack at the end, too. - for(i = 0; i < 24; i++) { + for(i = 0; i < 24; i++) ToSendStuffBit(1); - } } @@ -223,18 +217,17 @@ static void CodeIso15693AsReader256(uint8_t *cmd, int n) static void TransmitTo15693Tag(const uint8_t *cmd, int len, int *samples, int *wait) { int c; - -// FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD); + volatile uint32_t r; FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_TX); if(*wait < 10) { *wait = 10; } // for(c = 0; c < *wait;) { // if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) { // AT91C_BASE_SSC->SSC_THR = 0x00; // For exact timing! -// c++; +// ++c; // } // if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) { -// volatile uint32_t r = AT91C_BASE_SSC->SSC_RHR; +// r = AT91C_BASE_SSC->SSC_RHR; // (void)r; // } // WDT_HIT(); @@ -244,13 +237,10 @@ static void TransmitTo15693Tag(const uint8_t *cmd, int len, int *samples, int *w for(;;) { if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) { AT91C_BASE_SSC->SSC_THR = cmd[c]; - c++; - if(c >= len) { - break; - } + if( ++c >= len) break; } if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) { - volatile uint32_t r = AT91C_BASE_SSC->SSC_RHR; + r = AT91C_BASE_SSC->SSC_RHR; (void)r; } WDT_HIT(); @@ -263,23 +253,18 @@ static void TransmitTo15693Tag(const uint8_t *cmd, int len, int *samples, int *w //----------------------------------------------------------------------------- static void TransmitTo15693Reader(const uint8_t *cmd, int len, int *samples, int *wait) { - int c; - -// FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_TX); - FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_SIMULATOR); // No requirement to energise my coils + int c = 0; + volatile uint32_t r; + FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_SIMULATOR|FPGA_HF_SIMULATOR_MODULATE_424K); if(*wait < 10) { *wait = 10; } - c = 0; for(;;) { if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) { AT91C_BASE_SSC->SSC_THR = cmd[c]; - c++; - if(c >= len) { - break; - } + if( ++c >= len) break; } if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) { - volatile uint32_t r = AT91C_BASE_SSC->SSC_RHR; + r = AT91C_BASE_SSC->SSC_RHR; (void)r; } WDT_HIT(); @@ -298,21 +283,18 @@ static void TransmitTo15693Reader(const uint8_t *cmd, int len, int *samples, int // number of decoded bytes static int GetIso15693AnswerFromTag(uint8_t *receivedResponse, int maxLen, int *samples, int *elapsed) { - int c = 0; - uint8_t *dest = (uint8_t *)BigBuf; - int getNext = 0; + uint8_t *dest = BigBuf_get_addr(); + int c = 0, getNext = FALSE; int8_t prev = 0; -// NOW READ RESPONSE FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR); - //spindelay(60); // greg - experiment to get rid of some of the 0 byte/failed reads - c = 0; - getNext = FALSE; + SpinDelay(100); // greg - experiment to get rid of some of the 0 byte/failed reads + for(;;) { - if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) { + if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) AT91C_BASE_SSC->SSC_THR = 0x43; - } + if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) { int8_t b; b = (int8_t)AT91C_BASE_SSC->SSC_RHR; @@ -321,25 +303,12 @@ static int GetIso15693AnswerFromTag(uint8_t *receivedResponse, int maxLen, int * // tone that the tag AM-modulates, so every other sample is I, // every other is Q. We just want power, so abs(I) + abs(Q) is // close to what we want. + // iceman 2016, amplitude sqrt(abs(i) + abs(q)) if(getNext) { - int8_t r; - - if(b < 0) { - r = -b; - } else { - r = b; - } - if(prev < 0) { - r -= prev; - } else { - r += prev; - } - - dest[c++] = (uint8_t)r; - - if(c >= 2000) { + dest[c++] = (uint8_t)ABS(b) + ABS(prev); + + if(c >= 2000) break; - } } else { prev = b; } @@ -353,46 +322,42 @@ static int GetIso15693AnswerFromTag(uint8_t *receivedResponse, int maxLen, int * ////////////////////////////////////////// int i, j; - int max = 0, maxPos=0; - - int skip = 4; - + int max = 0, maxPos=0, skip = 4; + int k = 0; // this will be our return value + // if(GraphTraceLen < 1000) return; // THIS CHECKS FOR A BUFFER TO SMALL // First, correlate for SOF for(i = 0; i < 100; i++) { int corr = 0; - for(j = 0; j < arraylen(FrameSOF); j += skip) { - corr += FrameSOF[j]*dest[i+(j/skip)]; + for(j = 0; j < ARRAYLEN(FrameSOF); j += skip) { + corr += FrameSOF[j] * dest[i+(j/skip)]; } if(corr > max) { max = corr; maxPos = i; } } - // DbpString("SOF at %d, correlation %d", maxPos,max/(arraylen(FrameSOF)/skip)); - - int k = 0; // this will be our return value + // DbpString("SOF at %d, correlation %d", maxPos,max/(ARRAYLEN(FrameSOF)/skip)); // greg - If correlation is less than 1 then there's little point in continuing - if ((max/(arraylen(FrameSOF)/skip)) >= 1) + if ((max/(ARRAYLEN(FrameSOF)/skip)) >= 1) { - - i = maxPos + arraylen(FrameSOF)/skip; + i = maxPos + ARRAYLEN(FrameSOF) / skip; uint8_t outBuf[20]; memset(outBuf, 0, sizeof(outBuf)); uint8_t mask = 0x01; for(;;) { int corr0 = 0, corr1 = 0, corrEOF = 0; - for(j = 0; j < arraylen(Logic0); j += skip) { - corr0 += Logic0[j]*dest[i+(j/skip)]; + for(j = 0; j < ARRAYLEN(Logic0); j += skip) { + corr0 += Logic0[j] * dest[i+(j/skip)]; } - for(j = 0; j < arraylen(Logic1); j += skip) { - corr1 += Logic1[j]*dest[i+(j/skip)]; + for(j = 0; j < ARRAYLEN(Logic1); j += skip) { + corr1 += Logic1[j] * dest[i+(j/skip)]; } - for(j = 0; j < arraylen(FrameEOF); j += skip) { - corrEOF += FrameEOF[j]*dest[i+(j/skip)]; + for(j = 0; j < ARRAYLEN(FrameEOF); j += skip) { + corrEOF += FrameEOF[j] * dest[i+(j/skip)]; } // Even things out by the length of the target waveform. corr0 *= 4; @@ -402,17 +367,17 @@ static int GetIso15693AnswerFromTag(uint8_t *receivedResponse, int maxLen, int * // DbpString("EOF at %d", i); break; } else if(corr1 > corr0) { - i += arraylen(Logic1)/skip; + i += ARRAYLEN(Logic1)/skip; outBuf[k] |= mask; } else { - i += arraylen(Logic0)/skip; + i += ARRAYLEN(Logic0)/skip; } mask <<= 1; if(mask == 0) { k++; mask = 0x01; } - if((i+(int)arraylen(FrameEOF)) >= 2000) { + if( ( i + (int)ARRAYLEN(FrameEOF)) >= 2000) { DbpString("ran off end!"); break; } @@ -420,7 +385,7 @@ static int GetIso15693AnswerFromTag(uint8_t *receivedResponse, int maxLen, int * if(mask != 0x01) { // this happens, when we miss the EOF // TODO: for some reason this happens quite often if (DEBUG) Dbprintf("error, uneven octet! (extra bits!) mask=%02x", mask); - if (mask<0x08) k--; // discard the last uneven octet; + if (mask < 0x08) k--; // discard the last uneven octet; // 0x08 is an assumption - but works quite often } // uint8_t str1 [8]; @@ -437,63 +402,41 @@ static int GetIso15693AnswerFromTag(uint8_t *receivedResponse, int maxLen, int * for(i = 0; i < k; i++) { receivedResponse[i] = outBuf[i]; } - } // "end if correlation > 0" (max/(arraylen(FrameSOF)/skip)) + } // "end if correlation > 0" (max/(ARRAYLEN(FrameSOF)/skip)) return k; // return the number of bytes demodulated - -/// DbpString("CRC=%04x", Iso15693Crc(outBuf, k-2)); - } // Now the GetISO15693 message from sniffing command static int GetIso15693AnswerFromSniff(uint8_t *receivedResponse, int maxLen, int *samples, int *elapsed) { - int c = 0; - uint8_t *dest = (uint8_t *)BigBuf; - int getNext = 0; + uint8_t *dest = BigBuf_get_addr(); + int c = 0, getNext = FALSE; int8_t prev = 0; -// NOW READ RESPONSE FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR); - //spindelay(60); // greg - experiment to get rid of some of the 0 byte/failed reads - c = 0; - getNext = FALSE; + SpinDelay(100); // greg - experiment to get rid of some of the 0 byte/failed reads + for(;;) { - if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) { + if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) AT91C_BASE_SSC->SSC_THR = 0x43; - } + if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) { - int8_t b; - b = (int8_t)AT91C_BASE_SSC->SSC_RHR; + int8_t b = (int8_t)AT91C_BASE_SSC->SSC_RHR; // The samples are correlations against I and Q versions of the // tone that the tag AM-modulates, so every other sample is I, // every other is Q. We just want power, so abs(I) + abs(Q) is // close to what we want. if(getNext) { - int8_t r; - - if(b < 0) { - r = -b; - } else { - r = b; - } - if(prev < 0) { - r -= prev; - } else { - r += prev; - } - - dest[c++] = (uint8_t)r; - - if(c >= 20000) { + dest[c++] = (uint8_t)ABS(b) + ABS(prev); + + if(c >= 20000) break; - } } else { prev = b; } - getNext = !getNext; } } @@ -502,17 +445,12 @@ static int GetIso15693AnswerFromSniff(uint8_t *receivedResponse, int maxLen, int /////////// DEMODULATE /////////////////// ////////////////////////////////////////// - int i, j; - int max = 0, maxPos=0; - - int skip = 4; - -// if(GraphTraceLen < 1000) return; // THIS CHECKS FOR A BUFFER TO SMALL + int i, j, max = 0, maxPos=0, skip = 4; // First, correlate for SOF for(i = 0; i < 19000; i++) { int corr = 0; - for(j = 0; j < arraylen(FrameSOF); j += skip) { + for(j = 0; j < ARRAYLEN(FrameSOF); j += skip) { corr += FrameSOF[j]*dest[i+(j/skip)]; } if(corr > max) { @@ -520,28 +458,28 @@ static int GetIso15693AnswerFromSniff(uint8_t *receivedResponse, int maxLen, int maxPos = i; } } -// DbpString("SOF at %d, correlation %d", maxPos,max/(arraylen(FrameSOF)/skip)); +// DbpString("SOF at %d, correlation %d", maxPos,max/(ARRAYLEN(FrameSOF)/skip)); int k = 0; // this will be our return value // greg - If correlation is less than 1 then there's little point in continuing - if ((max/(arraylen(FrameSOF)/skip)) >= 1) // THIS SHOULD BE 1 + if ((max/(ARRAYLEN(FrameSOF)/skip)) >= 1) // THIS SHOULD BE 1 { - i = maxPos + arraylen(FrameSOF)/skip; + i = maxPos + ARRAYLEN(FrameSOF)/skip; uint8_t outBuf[20]; memset(outBuf, 0, sizeof(outBuf)); uint8_t mask = 0x01; for(;;) { int corr0 = 0, corr1 = 0, corrEOF = 0; - for(j = 0; j < arraylen(Logic0); j += skip) { + for(j = 0; j < ARRAYLEN(Logic0); j += skip) { corr0 += Logic0[j]*dest[i+(j/skip)]; } - for(j = 0; j < arraylen(Logic1); j += skip) { + for(j = 0; j < ARRAYLEN(Logic1); j += skip) { corr1 += Logic1[j]*dest[i+(j/skip)]; } - for(j = 0; j < arraylen(FrameEOF); j += skip) { + for(j = 0; j < ARRAYLEN(FrameEOF); j += skip) { corrEOF += FrameEOF[j]*dest[i+(j/skip)]; } // Even things out by the length of the target waveform. @@ -552,24 +490,24 @@ static int GetIso15693AnswerFromSniff(uint8_t *receivedResponse, int maxLen, int // DbpString("EOF at %d", i); break; } else if(corr1 > corr0) { - i += arraylen(Logic1)/skip; + i += ARRAYLEN(Logic1)/skip; outBuf[k] |= mask; } else { - i += arraylen(Logic0)/skip; + i += ARRAYLEN(Logic0)/skip; } mask <<= 1; if(mask == 0) { k++; mask = 0x01; } - if((i+(int)arraylen(FrameEOF)) >= 2000) { + if((i+(int)ARRAYLEN(FrameEOF)) >= 2000) { DbpString("ran off end!"); break; } } if(mask != 0x01) { DbpString("sniff: error, uneven octet! (discard extra bits!)"); - /// DbpString(" mask=%02x", mask); + // DbpString(" mask=%02x", mask); } // uint8_t str1 [8]; // itoa(k,str1); @@ -585,10 +523,8 @@ static int GetIso15693AnswerFromSniff(uint8_t *receivedResponse, int maxLen, int for(i = 0; i < k; i++) { receivedResponse[i] = outBuf[i]; } - } // "end if correlation > 0" (max/(arraylen(FrameSOF)/skip)) + } // "end if correlation > 0" (max/(ARRAYLEN(FrameSOF)/skip)) return k; // return the number of bytes demodulated - -/// DbpString("CRC=%04x", Iso15693Crc(outBuf, k-2)); } @@ -600,13 +536,13 @@ static void BuildIdentifyRequest(void); //----------------------------------------------------------------------------- void AcquireRawAdcSamplesIso15693(void) { - int c = 0; - uint8_t *dest = (uint8_t *)BigBuf; - int getNext = 0; + FpgaDownloadAndGo(FPGA_BITSTREAM_HF); + int c = 0, getNext = FALSE; int8_t prev = 0; + volatile uint32_t r; - FpgaDownloadAndGo(FPGA_BITSTREAM_HF); + uint8_t *dest = BigBuf_get_addr(); BuildIdentifyRequest(); SetAdcMuxFor(GPIO_MUXSEL_HIPKD); @@ -623,13 +559,10 @@ void AcquireRawAdcSamplesIso15693(void) for(;;) { if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) { AT91C_BASE_SSC->SSC_THR = ToSend[c]; - c++; - if(c == ToSendMax+3) { - break; - } + if( ++c == ToSendMax+3) break; } if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) { - volatile uint32_t r = AT91C_BASE_SSC->SSC_RHR; + r = AT91C_BASE_SSC->SSC_RHR; (void)r; } WDT_HIT(); @@ -638,42 +571,27 @@ void AcquireRawAdcSamplesIso15693(void) FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR); c = 0; - getNext = FALSE; for(;;) { - if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) { + if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) AT91C_BASE_SSC->SSC_THR = 0x43; - } + if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) { - int8_t b; - b = (int8_t)AT91C_BASE_SSC->SSC_RHR; + + int8_t b = (int8_t)AT91C_BASE_SSC->SSC_RHR; // The samples are correlations against I and Q versions of the // tone that the tag AM-modulates, so every other sample is I, // every other is Q. We just want power, so abs(I) + abs(Q) is // close to what we want. if(getNext) { - int8_t r; - - if(b < 0) { - r = -b; - } else { - r = b; - } - if(prev < 0) { - r -= prev; - } else { - r += prev; - } - - dest[c++] = (uint8_t)r; - - if(c >= 2000) { - break; - } + + dest[c++] = (uint8_t)(ABS(b) + ABS(prev)); + + if(c >= 2000) break; + } else { prev = b; } - getNext = !getNext; } } @@ -682,10 +600,9 @@ void AcquireRawAdcSamplesIso15693(void) void RecordRawAdcSamplesIso15693(void) { - int c = 0; - uint8_t *dest = (uint8_t *)BigBuf; - int getNext = 0; + uint8_t *dest = BigBuf_get_addr(); + int c = 0, getNext = FALSE; int8_t prev = 0; FpgaDownloadAndGo(FPGA_BITSTREAM_HF); @@ -693,17 +610,14 @@ void RecordRawAdcSamplesIso15693(void) FpgaSetupSsc(); // Start from off (no field generated) - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - SpinDelay(200); + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); + SpinDelay(200); SetAdcMuxFor(GPIO_MUXSEL_HIPKD); - SpinDelay(100); FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR); - c = 0; - getNext = FALSE; for(;;) { if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) { AT91C_BASE_SSC->SSC_THR = 0x43; @@ -717,24 +631,10 @@ void RecordRawAdcSamplesIso15693(void) // every other is Q. We just want power, so abs(I) + abs(Q) is // close to what we want. if(getNext) { - int8_t r; - - if(b < 0) { - r = -b; - } else { - r = b; - } - if(prev < 0) { - r -= prev; - } else { - r += prev; - } - - dest[c++] = (uint8_t)r; - - if(c >= 7000) { + dest[c++] = (uint8_t) ABS(b) + ABS(prev); + + if(c >= 7000) break; - } } else { prev = b; } @@ -785,8 +685,7 @@ void Iso15693InitReader() { // thing that you must send to a tag to get a response. static void BuildIdentifyRequest(void) { - uint8_t cmd[5]; - + uint8_t cmd[5] = {0,1,0,0,0}; uint16_t crc; // one sub-carrier, inventory, 1 slot, fast rate // AFI is at bit 5 (1<<4) when doing an INVENTORY @@ -806,8 +705,7 @@ static void BuildIdentifyRequest(void) // uid is in transmission order (which is reverse of display order) static void BuildReadBlockRequest(uint8_t *uid, uint8_t blockNumber ) { - uint8_t cmd[13]; - + uint8_t cmd[13] = {0,0,0,0,0,0,0,0,0,0,0,0,0}; uint16_t crc; // If we set the Option_Flag in this request, the VICC will respond with the secuirty status of the block // followed by teh block data @@ -836,24 +734,24 @@ static void BuildReadBlockRequest(uint8_t *uid, uint8_t blockNumber ) } // Now the VICC>VCD responses when we are simulating a tag - static void BuildInventoryResponse(void) + static void BuildInventoryResponse( uint8_t *uid) { - uint8_t cmd[12]; - + uint8_t cmd[12] = {0,0,0,0,0,0,0,0,0,0,0,0}; uint16_t crc; // one sub-carrier, inventory, 1 slot, fast rate // AFI is at bit 5 (1<<4) when doing an INVENTORY - cmd[0] = 0; //(1 << 2) | (1 << 5) | (1 << 1); - cmd[1] = 0; + //(1 << 2) | (1 << 5) | (1 << 1); + cmd[0] = 0; // + cmd[1] = 0; // DSFID (data storage format identifier). 0x00 = not supported // 64-bit UID - cmd[2] = 0x32; - cmd[3]= 0x4b; - cmd[4] = 0x03; - cmd[5] = 0x01; - cmd[6] = 0x00; - cmd[7] = 0x10; - cmd[8] = 0x05; - cmd[9]= 0xe0; + cmd[2] = uid[7]; //0x32; + cmd[3] = uid[6]; //0x4b; + cmd[4] = uid[5]; //0x03; + cmd[5] = uid[4]; //0x01; + cmd[6] = uid[3]; //0x00; + cmd[7] = uid[2]; //0x10; + cmd[8] = uid[1]; //0x05; + cmd[9] = uid[0]; //0xe0; //Now the CRC crc = Crc(cmd, 10); cmd[10] = crc & 0xff; @@ -870,22 +768,20 @@ static void BuildReadBlockRequest(uint8_t *uid, uint8_t blockNumber ) // return: lenght of received data int SendDataTag(uint8_t *send, int sendlen, int init, int speed, uint8_t **recv) { - int samples = 0; - int tsamples = 0; - int wait = 0; - int elapsed = 0; + int samples = 0, tsamples = 0; + int wait = 0, elapsed = 0; + int answerLen = 0; - LED_A_ON(); - LED_B_ON(); - LED_C_OFF(); - LED_D_OFF(); + LED_A_ON(); LED_B_ON(); - int answerLen=0; - uint8_t *answer = (((uint8_t *)BigBuf) + 3660); - if (recv!=NULL) memset(BigBuf + 3660, 0, 100); - - if (init) Iso15693InitReader(); + LED_C_OFF(); LED_D_OFF(); + if (init) Iso15693InitReader(); + + // answer is 100bytes long? + uint8_t *answer = BigBuf_malloc(100); + if (recv != NULL) memset(answer, 0, 100); + if (!speed) { // low speed (1 out of 256) CodeIso15693AsReader256(send, sendlen); @@ -897,20 +793,16 @@ int SendDataTag(uint8_t *send, int sendlen, int init, int speed, uint8_t **recv) LED_A_ON(); LED_B_OFF(); - TransmitTo15693Tag(ToSend,ToSendMax,&tsamples, &wait); + TransmitTo15693Tag(ToSend, ToSendMax, &tsamples, &wait); // Now wait for a response if (recv!=NULL) { LED_A_OFF(); LED_B_ON(); answerLen = GetIso15693AnswerFromTag(answer, 100, &samples, &elapsed) ; - *recv=answer; + *recv = answer; } - LED_A_OFF(); - LED_B_OFF(); - LED_C_OFF(); - LED_D_OFF(); - + LEDsoff(); return answerLen; } @@ -922,75 +814,71 @@ int SendDataTag(uint8_t *send, int sendlen, int init, int speed, uint8_t **recv) // Decodes a message from a tag and displays its metadata and content #define DBD15STATLEN 48 void DbdecodeIso15693Answer(int len, uint8_t *d) { - char status[DBD15STATLEN+1]={0}; + char status[DBD15STATLEN+1] = {0}; uint16_t crc; - if (len>3) { - if (d[0]&(1<<3)) - strncat(status,"ProtExt ",DBD15STATLEN); - if (d[0]&1) { + if (len > 3) { + if (d[0] & ( 1 << 3 )) + strncat(status, "ProtExt ", DBD15STATLEN); + if (d[0] & 1) { // error - strncat(status,"Error ",DBD15STATLEN); + strncat(status, "Error ", DBD15STATLEN); switch (d[1]) { case 0x01: - strncat(status,"01:notSupp",DBD15STATLEN); + strncat(status, "01:notSupp", DBD15STATLEN); break; case 0x02: - strncat(status,"02:notRecog",DBD15STATLEN); + strncat(status, "02:notRecog", DBD15STATLEN); break; case 0x03: - strncat(status,"03:optNotSupp",DBD15STATLEN); + strncat(status, "03:optNotSupp", DBD15STATLEN); break; case 0x0f: - strncat(status,"0f:noInfo",DBD15STATLEN); + strncat(status, "0f:noInfo", DBD15STATLEN); break; case 0x10: - strncat(status,"10:dontExist",DBD15STATLEN); + strncat(status, "10:dontExist", DBD15STATLEN); break; case 0x11: - strncat(status,"11:lockAgain",DBD15STATLEN); + strncat(status, "11:lockAgain", DBD15STATLEN); break; case 0x12: - strncat(status,"12:locked",DBD15STATLEN); + strncat(status, "12:locked", DBD15STATLEN); break; case 0x13: - strncat(status,"13:progErr",DBD15STATLEN); + strncat(status, "13:progErr", DBD15STATLEN); break; case 0x14: - strncat(status,"14:lockErr",DBD15STATLEN); + strncat(status, "14:lockErr", DBD15STATLEN); break; default: - strncat(status,"unknownErr",DBD15STATLEN); + strncat(status, "unknownErr", DBD15STATLEN); } - strncat(status," ",DBD15STATLEN); + strncat(status ," " ,DBD15STATLEN); } else { - strncat(status,"NoErr ",DBD15STATLEN); + strncat(status ,"NoErr ", DBD15STATLEN); } - crc=Crc(d,len-2); + crc = Crc(d,len-2); if ( (( crc & 0xff ) == d[len-2]) && (( crc >> 8 ) == d[len-1]) ) - strncat(status,"CrcOK",DBD15STATLEN); + strncat(status, "CrcOK", DBD15STATLEN); else - strncat(status,"CrcFail!",DBD15STATLEN); + strncat(status, "CrcFail!", DBD15STATLEN); - Dbprintf("%s",status); + Dbprintf("%s", status); } } - - /////////////////////////////////////////////////////////////////////// // Functions called via USB/Client /////////////////////////////////////////////////////////////////////// void SetDebugIso15693(uint32_t debug) { - DEBUG=debug; - Dbprintf("Iso15693 Debug is now %s",DEBUG?"on":"off"); + DEBUG = debug; + Dbprintf("Iso15693 Debug is now %s", DEBUG ? "on" : "off"); return; } - - //----------------------------------------------------------------------------- // Simulate an ISO15693 reader, perform anti-collision and then attempt to read a sector // all demodulation performed in arm rather than host. - greg @@ -1002,32 +890,33 @@ void ReaderIso15693(uint32_t parameter) LED_C_OFF(); LED_D_OFF(); -//DbpString(parameter); - - //uint8_t *answer0 = (((uint8_t *)BigBuf) + 3560); // allow 100 bytes per reponse (way too much) - uint8_t *answer1 = (((uint8_t *)BigBuf) + 3660); // - uint8_t *answer2 = (((uint8_t *)BigBuf) + 3760); - uint8_t *answer3 = (((uint8_t *)BigBuf) + 3860); - //uint8_t *TagUID= (((uint8_t *)BigBuf) + 3960); // where we hold the uid for hi15reader -// int answerLen0 = 0; int answerLen1 = 0; int answerLen2 = 0; int answerLen3 = 0; - int i=0; // counter + int i = 0; + int samples = 0; + int tsamples = 0; + int wait = 0; + int elapsed = 0; + uint8_t TagUID[8] = {0x00}; + FpgaDownloadAndGo(FPGA_BITSTREAM_HF); + + uint8_t *answer1 = BigBuf_malloc(100); + uint8_t *answer2 = BigBuf_malloc(100); + uint8_t *answer3 = BigBuf_malloc(100); // Blank arrays - memset(BigBuf + 3660, 0, 300); + memset(answer1, 0x00, 100); + memset(answer2, 0x00, 100); + memset(answer3, 0x00, 100); - FpgaDownloadAndGo(FPGA_BITSTREAM_HF); + SetAdcMuxFor(GPIO_MUXSEL_HIPKD); // Setup SSC FpgaSetupSsc(); // Start from off (no field generated) - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - SpinDelay(200); - - SetAdcMuxFor(GPIO_MUXSEL_HIPKD); - FpgaSetupSsc(); + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); + SpinDelay(200); // Give the tags time to energize FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR); @@ -1038,44 +927,19 @@ void ReaderIso15693(uint32_t parameter) LED_C_OFF(); LED_D_OFF(); - int samples = 0; - int tsamples = 0; - int wait = 0; - int elapsed = 0; - // FIRST WE RUN AN INVENTORY TO GET THE TAG UID // THIS MEANS WE CAN PRE-BUILD REQUESTS TO SAVE CPU TIME - uint8_t TagUID[8] = {0, 0, 0, 0, 0, 0, 0, 0}; // where we hold the uid for hi15reader - -// BuildIdentifyRequest(); -// //TransmitTo15693Tag(ToSend,ToSendMax+3,&tsamples, &wait); -// TransmitTo15693Tag(ToSend,ToSendMax,&tsamples, &wait); // No longer ToSendMax+3 -// // Now wait for a response -// responseLen0 = GetIso15693AnswerFromTag(receivedAnswer0, 100, &samples, &elapsed) ; -// if (responseLen0 >=12) // we should do a better check than this -// { -// // really we should check it is a valid mesg -// // but for now just grab what we think is the uid -// TagUID[0] = receivedAnswer0[2]; -// TagUID[1] = receivedAnswer0[3]; -// TagUID[2] = receivedAnswer0[4]; -// TagUID[3] = receivedAnswer0[5]; -// TagUID[4] = receivedAnswer0[6]; -// TagUID[5] = receivedAnswer0[7]; -// TagUID[6] = receivedAnswer0[8]; // IC Manufacturer code -// DbpIntegers(TagUID[6],TagUID[5],TagUID[4]); -//} // Now send the IDENTIFY command BuildIdentifyRequest(); - //TransmitTo15693Tag(ToSend,ToSendMax+3,&tsamples, &wait); - TransmitTo15693Tag(ToSend,ToSendMax,&tsamples, &wait); // No longer ToSendMax+3 + + TransmitTo15693Tag(ToSend,ToSendMax,&tsamples, &wait); + // Now wait for a response answerLen1 = GetIso15693AnswerFromTag(answer1, 100, &samples, &elapsed) ; - if (answerLen1 >=12) // we should do a better check than this + if (answerLen1 >= 12) // we should do a better check than this { - TagUID[0] = answer1[2]; TagUID[1] = answer1[3]; TagUID[2] = answer1[4]; @@ -1085,69 +949,44 @@ void ReaderIso15693(uint32_t parameter) TagUID[6] = answer1[8]; // IC Manufacturer code TagUID[7] = answer1[9]; // always E0 - // Now send the SELECT command - // since the SELECT command is optional, we should not rely on it. -//// BuildSelectRequest(TagUID); -// TransmitTo15693Tag(ToSend,ToSendMax,&tsamples, &wait); // No longer ToSendMax+3 - // Now wait for a response -/// answerLen2 = GetIso15693AnswerFromTag(answer2, 100, &samples, &elapsed); - - // Now send the MULTI READ command -// BuildArbitraryRequest(*TagUID,parameter); -/// BuildArbitraryCustomRequest(TagUID,parameter); -// BuildReadBlockRequest(*TagUID,parameter); -// BuildSysInfoRequest(*TagUID); - //TransmitTo15693Tag(ToSend,ToSendMax+3,&tsamples, &wait); -/// TransmitTo15693Tag(ToSend,ToSendMax,&tsamples, &wait); // No longer ToSendMax+3 - // Now wait for a response -/// answerLen3 = GetIso15693AnswerFromTag(answer3, 100, &samples, &elapsed) ; - } Dbprintf("%d octets read from IDENTIFY request:", answerLen1); - DbdecodeIso15693Answer(answerLen1,answer1); - Dbhexdump(answerLen1,answer1,true); + DbdecodeIso15693Answer(answerLen1, answer1); + Dbhexdump(answerLen1, answer1, true); // UID is reverse if (answerLen1>=12) - //Dbprintf("UID = %*D",8,TagUID," "); - Dbprintf("UID = %02hX%02hX%02hX%02hX%02hX%02hX%02hX%02hX",TagUID[7],TagUID[6],TagUID[5], - TagUID[4],TagUID[3],TagUID[2],TagUID[1],TagUID[0]); + Dbprintf("UID = %02hX%02hX%02hX%02hX%02hX%02hX%02hX%02hX", + TagUID[7],TagUID[6],TagUID[5],TagUID[4], + TagUID[3],TagUID[2],TagUID[1],TagUID[0]); Dbprintf("%d octets read from SELECT request:", answerLen2); - DbdecodeIso15693Answer(answerLen2,answer2); - Dbhexdump(answerLen2,answer2,true); + DbdecodeIso15693Answer(answerLen2, answer2); + Dbhexdump(answerLen2, answer2, true); Dbprintf("%d octets read from XXX request:", answerLen3); DbdecodeIso15693Answer(answerLen3,answer3); - Dbhexdump(answerLen3,answer3,true); + Dbhexdump(answerLen3, answer3, true); - // read all pages - if (answerLen1>=12 && DEBUG) { - i=0; - while (i<32) { // sanity check, assume max 32 pages + if (answerLen1 >= 12 && DEBUG) { + i = 0; + while ( i < 32 ) { // sanity check, assume max 32 pages BuildReadBlockRequest(TagUID,i); - TransmitTo15693Tag(ToSend,ToSendMax,&tsamples, &wait); - answerLen2 = GetIso15693AnswerFromTag(answer2, 100, &samples, &elapsed); + TransmitTo15693Tag(ToSend,ToSendMax,&tsamples, &wait); + answerLen2 = GetIso15693AnswerFromTag(answer2, 100, &samples, &elapsed); if (answerLen2>0) { - Dbprintf("READ SINGLE BLOCK %d returned %d octets:",i,answerLen2); - DbdecodeIso15693Answer(answerLen2,answer2); - Dbhexdump(answerLen2,answer2,true); + Dbprintf("READ SINGLE BLOCK %d returned %d octets:", i, answerLen2); + DbdecodeIso15693Answer(answerLen2, answer2); + Dbhexdump(answerLen2, answer2, true); if ( *((uint32_t*) answer2) == 0x07160101 ) break; // exit on NoPageErr } - i++; + ++i; } } -// str2[0]=0; -// for(i = 0; i < responseLen3; i++) { -// itoa(str1,receivedAnswer3[i]); -// strncat(str2,str1,8); -// } -// DbpString(str2); - LED_A_OFF(); LED_B_OFF(); LED_C_OFF(); @@ -1156,32 +995,29 @@ void ReaderIso15693(uint32_t parameter) // Simulate an ISO15693 TAG, perform anti-collision and then print any reader commands // all demodulation performed in arm rather than host. - greg -void SimTagIso15693(uint32_t parameter) +void SimTagIso15693(uint32_t parameter, uint8_t *uid) { LED_A_ON(); LED_B_ON(); LED_C_OFF(); LED_D_OFF(); - uint8_t *answer1 = (((uint8_t *)BigBuf) + 3660); // int answerLen1 = 0; - - // Blank arrays - memset(answer1, 0, 100); + int samples = 0; + int tsamples = 0; + int wait = 0; + int elapsed = 0; FpgaDownloadAndGo(FPGA_BITSTREAM_HF); - // Setup SSC - FpgaSetupSsc(); - // Start from off (no field generated) - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - SpinDelay(200); + uint8_t *buf = BigBuf_malloc(100); + memset(buf, 0x00, 100); SetAdcMuxFor(GPIO_MUXSEL_HIPKD); FpgaSetupSsc(); - // Give the tags time to energize -// FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR); // NO GOOD FOR SIM TAG!!!! + // Start from off (no field generated) + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); SpinDelay(200); LED_A_OFF(); @@ -1189,24 +1025,26 @@ void SimTagIso15693(uint32_t parameter) LED_C_ON(); LED_D_OFF(); - int samples = 0; - int tsamples = 0; - int wait = 0; - int elapsed = 0; - - answerLen1 = GetIso15693AnswerFromSniff(answer1, 100, &samples, &elapsed) ; + // Listen to reader + answerLen1 = GetIso15693AnswerFromSniff(buf, 100, &samples, &elapsed) ; if (answerLen1 >=1) // we should do a better check than this { // Build a suitable reponse to the reader INVENTORY cocmmand - BuildInventoryResponse(); + // not so obsvious, but in the call to BuildInventoryResponse, the command is copied to the global ToSend buffer used below. + + BuildInventoryResponse(uid); + TransmitTo15693Reader(ToSend,ToSendMax, &tsamples, &wait); } Dbprintf("%d octets read from reader command: %x %x %x %x %x %x %x %x %x", answerLen1, - answer1[0], answer1[1], answer1[2], - answer1[3], answer1[4], answer1[5], - answer1[6], answer1[7], answer1[8]); + buf[0], buf[1], buf[2], buf[3], + buf[4], buf[5], buf[6], buf[7], buf[8]); + + Dbprintf("Simulationg uid: %x %x %x %x %x %x %x %x", + uid[0], uid[1], uid[2], uid[3], + uid[4], uid[5], uid[6], uid[7]); LED_A_OFF(); LED_B_OFF(); @@ -1220,63 +1058,63 @@ void SimTagIso15693(uint32_t parameter) void BruteforceIso15693Afi(uint32_t speed) { uint8_t data[20]; - uint8_t *recv=data; - int datalen=0, recvlen=0; - + uint8_t *recv = data; + int datalen = 0, recvlen = 0; + + memset(data, 0, sizeof(data)); + Iso15693InitReader(); // first without AFI // Tags should respond wihtout AFI and with AFI=0 even when AFI is active - data[0]=ISO15_REQ_SUBCARRIER_SINGLE | ISO15_REQ_DATARATE_HIGH | - ISO15_REQ_INVENTORY | ISO15_REQINV_SLOT1; - data[1]=ISO15_CMD_INVENTORY; - data[2]=0; // mask length - datalen=AddCrc(data,3); - recvlen=SendDataTag(data,datalen,0,speed,&recv); + data[0] = ISO15_REQ_SUBCARRIER_SINGLE | ISO15_REQ_DATARATE_HIGH | + ISO15_REQ_INVENTORY | ISO15_REQINV_SLOT1; + data[1] = ISO15_CMD_INVENTORY; + data[2] = 0; // mask length + datalen = AddCrc(data, 3); + recvlen = SendDataTag(data, datalen, 0, speed, &recv); WDT_HIT(); - if (recvlen>=12) { - Dbprintf("NoAFI UID=%s",sprintUID(NULL,&recv[2])); + if (recvlen >= 12) { + Dbprintf("NoAFI UID=%s", sprintUID(NULL, &recv[2])); } // now with AFI - data[0]=ISO15_REQ_SUBCARRIER_SINGLE | ISO15_REQ_DATARATE_HIGH | - ISO15_REQ_INVENTORY | ISO15_REQINV_AFI | ISO15_REQINV_SLOT1; - data[1]=ISO15_CMD_INVENTORY; - data[2]=0; // AFI - data[3]=0; // mask length + data[0] = ISO15_REQ_SUBCARRIER_SINGLE | ISO15_REQ_DATARATE_HIGH | + ISO15_REQ_INVENTORY | ISO15_REQINV_AFI | ISO15_REQINV_SLOT1; + data[1] = ISO15_CMD_INVENTORY; + data[2] = 0; // AFI + data[3] = 0; // mask length - for (int i=0;i<256;i++) { - data[2]=i & 0xFF; - datalen=AddCrc(data,4); - recvlen=SendDataTag(data,datalen,0,speed,&recv); + for (int i = 0; i < 256; i++) { + data[2] = i & 0xFF; // iceman 2016, is & 0xFF needed? + datalen = AddCrc(data, 4); + recvlen = SendDataTag(data, datalen, 0, speed, &recv); WDT_HIT(); - if (recvlen>=12) { - Dbprintf("AFI=%i UID=%s",i,sprintUID(NULL,&recv[2])); + if (recvlen >= 12) { + Dbprintf("AFI=%i UID=%s", i, sprintUID(NULL, &recv[2])); } } Dbprintf("AFI Bruteforcing done."); - } // Allows to directly send commands to the tag via the client void DirectTag15693Command(uint32_t datalen,uint32_t speed, uint32_t recv, uint8_t data[]) { - int recvlen=0; - uint8_t *recvbuf=(uint8_t *)BigBuf; -// UsbCommand n; + int recvlen = 0; + uint8_t *recvbuf = BigBuf_get_addr(); if (DEBUG) { Dbprintf("SEND"); Dbhexdump(datalen,data,true); } - recvlen=SendDataTag(data,datalen,1,speed,(recv?&recvbuf:NULL)); + recvlen = SendDataTag(data, datalen, 1, speed, (recv ? &recvbuf : NULL)); if (recv) { LED_B_ON(); - cmd_send(CMD_ACK,recvlen>48?48:recvlen,0,0,recvbuf,48); + cmd_send(CMD_ACK,recvlen>48?48:recvlen,0,0,recvbuf,48); LED_B_OFF(); if (DEBUG) { @@ -1285,156 +1123,4 @@ void DirectTag15693Command(uint32_t datalen,uint32_t speed, uint32_t recv, uint8 Dbhexdump(recvlen,recvbuf,true); } } - -} - - - - -// -------------------------------------------------------------------- -// -- Misc & deprecated functions -// -------------------------------------------------------------------- - -/* - -// do not use; has a fix UID -static void __attribute__((unused)) BuildSysInfoRequest(uint8_t *uid) -{ - uint8_t cmd[12]; - - uint16_t crc; - // If we set the Option_Flag in this request, the VICC will respond with the secuirty status of the block - // followed by teh block data - // one sub-carrier, inventory, 1 slot, fast rate - cmd[0] = (1 << 5) | (1 << 1); // no SELECT bit - // System Information command code - cmd[1] = 0x2B; - // UID may be optionally specified here - // 64-bit UID - cmd[2] = 0x32; - cmd[3]= 0x4b; - cmd[4] = 0x03; - cmd[5] = 0x01; - cmd[6] = 0x00; - cmd[7] = 0x10; - cmd[8] = 0x05; - cmd[9]= 0xe0; // always e0 (not exactly unique) - //Now the CRC - crc = Crc(cmd, 10); // the crc needs to be calculated over 2 bytes - cmd[10] = crc & 0xff; - cmd[11] = crc >> 8; - - CodeIso15693AsReader(cmd, sizeof(cmd)); -} - - -// do not use; has a fix UID -static void __attribute__((unused)) BuildReadMultiBlockRequest(uint8_t *uid) -{ - uint8_t cmd[14]; - - uint16_t crc; - // If we set the Option_Flag in this request, the VICC will respond with the secuirty status of the block - // followed by teh block data - // one sub-carrier, inventory, 1 slot, fast rate - cmd[0] = (1 << 5) | (1 << 1); // no SELECT bit - // READ Multi BLOCK command code - cmd[1] = 0x23; - // UID may be optionally specified here - // 64-bit UID - cmd[2] = 0x32; - cmd[3]= 0x4b; - cmd[4] = 0x03; - cmd[5] = 0x01; - cmd[6] = 0x00; - cmd[7] = 0x10; - cmd[8] = 0x05; - cmd[9]= 0xe0; // always e0 (not exactly unique) - // First Block number to read - cmd[10] = 0x00; - // Number of Blocks to read - cmd[11] = 0x2f; // read quite a few - //Now the CRC - crc = Crc(cmd, 12); // the crc needs to be calculated over 2 bytes - cmd[12] = crc & 0xff; - cmd[13] = crc >> 8; - - CodeIso15693AsReader(cmd, sizeof(cmd)); -} - -// do not use; has a fix UID -static void __attribute__((unused)) BuildArbitraryRequest(uint8_t *uid,uint8_t CmdCode) -{ - uint8_t cmd[14]; - - uint16_t crc; - // If we set the Option_Flag in this request, the VICC will respond with the secuirty status of the block - // followed by teh block data - // one sub-carrier, inventory, 1 slot, fast rate - cmd[0] = (1 << 5) | (1 << 1); // no SELECT bit - // READ BLOCK command code - cmd[1] = CmdCode; - // UID may be optionally specified here - // 64-bit UID - cmd[2] = 0x32; - cmd[3]= 0x4b; - cmd[4] = 0x03; - cmd[5] = 0x01; - cmd[6] = 0x00; - cmd[7] = 0x10; - cmd[8] = 0x05; - cmd[9]= 0xe0; // always e0 (not exactly unique) - // Parameter - cmd[10] = 0x00; - cmd[11] = 0x0a; - -// cmd[12] = 0x00; -// cmd[13] = 0x00; //Now the CRC - crc = Crc(cmd, 12); // the crc needs to be calculated over 2 bytes - cmd[12] = crc & 0xff; - cmd[13] = crc >> 8; - - CodeIso15693AsReader(cmd, sizeof(cmd)); -} - -// do not use; has a fix UID -static void __attribute__((unused)) BuildArbitraryCustomRequest(uint8_t uid[], uint8_t CmdCode) -{ - uint8_t cmd[14]; - - uint16_t crc; - // If we set the Option_Flag in this request, the VICC will respond with the secuirty status of the block - // followed by teh block data - // one sub-carrier, inventory, 1 slot, fast rate - cmd[0] = (1 << 5) | (1 << 1); // no SELECT bit - // READ BLOCK command code - cmd[1] = CmdCode; - // UID may be optionally specified here - // 64-bit UID - cmd[2] = 0x32; - cmd[3]= 0x4b; - cmd[4] = 0x03; - cmd[5] = 0x01; - cmd[6] = 0x00; - cmd[7] = 0x10; - cmd[8] = 0x05; - cmd[9]= 0xe0; // always e0 (not exactly unique) - // Parameter - cmd[10] = 0x05; // for custom codes this must be manufcturer code - cmd[11] = 0x00; - -// cmd[12] = 0x00; -// cmd[13] = 0x00; //Now the CRC - crc = Crc(cmd, 12); // the crc needs to be calculated over 2 bytes - cmd[12] = crc & 0xff; - cmd[13] = crc >> 8; - - CodeIso15693AsReader(cmd, sizeof(cmd)); -} - - - - -*/ - - +} \ No newline at end of file