X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/7cc204bff881ce1d1833d8e93469f6bbba80c70e..refs/pull/649/head:/armsrc/iso15693.c diff --git a/armsrc/iso15693.c b/armsrc/iso15693.c index ed7beb6f..ad6f5cfc 100644 --- a/armsrc/iso15693.c +++ b/armsrc/iso15693.c @@ -81,7 +81,10 @@ #define AddCrc(data,datalen) Iso15693AddCrc(data,datalen) #define sprintUID(target,uid) Iso15693sprintUID(target,uid) -int DEBUG=0; +// approximate amplitude=sqrt(ci^2+cq^2) +#define AMPLITUDE(ci, cq) (MAX(ABS(ci), ABS(cq)) + (MIN(ABS(ci), ABS(cq))>>1)) + +static int DEBUG = 0; // --------------------------- @@ -263,13 +266,10 @@ 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; + 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]; @@ -299,20 +299,16 @@ static void TransmitTo15693Reader(const uint8_t *cmd, int len, int *samples, int static int GetIso15693AnswerFromTag(uint8_t *receivedResponse, int maxLen, int *samples, int *elapsed) { int c = 0; - uint8_t *dest = (uint8_t *)BigBuf; + uint8_t *dest = BigBuf_get_addr(); int getNext = 0; 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; + getNext = false; 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)) { int8_t b; b = (int8_t)AT91C_BASE_SSC->SSC_RHR; @@ -322,22 +318,11 @@ static int GetIso15693AnswerFromTag(uint8_t *receivedResponse, int maxLen, int * // every other is Q. We just want power, so abs(I) + abs(Q) is // close to what we want. if(getNext) { - int8_t r; + uint8_t r = AMPLITUDE(b, prev); - if(b < 0) { - r = -b; - } else { - r = b; - } - if(prev < 0) { - r -= prev; - } else { - r += prev; - } - - dest[c++] = (uint8_t)r; + dest[c++] = r; - if(c >= 2000) { + if(c >= 4000) { break; } } else { @@ -355,12 +340,10 @@ static int GetIso15693AnswerFromTag(uint8_t *receivedResponse, int maxLen, int * int i, j; int max = 0, maxPos=0; - int skip = 4; - - // if(GraphTraceLen < 1000) return; // THIS CHECKS FOR A BUFFER TO SMALL + int skip = 2; // First, correlate for SOF - for(i = 0; i < 100; i++) { + for(i = 0; i < 200; i++) { // usually, SOF is found around i = 60 int corr = 0; for(j = 0; j < arraylen(FrameSOF); j += skip) { corr += FrameSOF[j]*dest[i+(j/skip)]; @@ -370,7 +353,7 @@ static int GetIso15693AnswerFromTag(uint8_t *receivedResponse, int maxLen, int * maxPos = i; } } - // DbpString("SOF at %d, correlation %d", maxPos,max/(arraylen(FrameSOF)/skip)); + if (DEBUG) Dbprintf("SOF at %d, correlation %d", maxPos, max/(arraylen(FrameSOF)/skip)); int k = 0; // this will be our return value @@ -384,10 +367,15 @@ static int GetIso15693AnswerFromTag(uint8_t *receivedResponse, int maxLen, int * memset(outBuf, 0, sizeof(outBuf)); uint8_t mask = 0x01; for(;;) { - int corr0 = 0, corr1 = 0, corrEOF = 0; + int corr0 = 0, corr00 = 0, corr01 = 0, corr1 = 0, corrEOF = 0; for(j = 0; j < arraylen(Logic0); j += skip) { corr0 += Logic0[j]*dest[i+(j/skip)]; } + corr01 = corr00 = corr0; + for(j = 0; j < arraylen(Logic0); j += skip) { + corr00 += Logic0[j]*dest[i+arraylen(Logic0)/skip+(j/skip)]; + corr01 += Logic1[j]*dest[i+arraylen(Logic0)/skip+(j/skip)]; + } for(j = 0; j < arraylen(Logic1); j += skip) { corr1 += Logic1[j]*dest[i+(j/skip)]; } @@ -395,11 +383,14 @@ static int GetIso15693AnswerFromTag(uint8_t *receivedResponse, int maxLen, int * corrEOF += FrameEOF[j]*dest[i+(j/skip)]; } // Even things out by the length of the target waveform. + corr00 *= 2; + corr01 *= 2; corr0 *= 4; corr1 *= 4; - if(corrEOF > corr1 && corrEOF > corr0) { - // DbpString("EOF at %d", i); + if(corrEOF > corr1 && corrEOF > corr00 && corrEOF > corr01) { + if (DEBUG) Dbprintf("EOF at %d, correlation %d (corr01: %d, corr00: %d, corr1: %d, corr0: %d)", + i, corrEOF, corr01, corr00, corr1, corr0); break; } else if(corr1 > corr0) { i += arraylen(Logic1)/skip; @@ -412,7 +403,7 @@ static int GetIso15693AnswerFromTag(uint8_t *receivedResponse, int maxLen, int * k++; mask = 0x01; } - if((i+(int)arraylen(FrameEOF)) >= 2000) { + if((i+(int)arraylen(FrameEOF)/skip) >= 4000) { DbpString("ran off end!"); break; } @@ -449,7 +440,7 @@ static int GetIso15693AnswerFromTag(uint8_t *receivedResponse, int maxLen, int * static int GetIso15693AnswerFromSniff(uint8_t *receivedResponse, int maxLen, int *samples, int *elapsed) { int c = 0; - uint8_t *dest = (uint8_t *)BigBuf; + uint8_t *dest = BigBuf_get_addr(); int getNext = 0; int8_t prev = 0; @@ -458,36 +449,21 @@ static int GetIso15693AnswerFromSniff(uint8_t *receivedResponse, int maxLen, int 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; + getNext = false; 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)) { - 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; - } + uint8_t r = AMPLITUDE(b, prev); - dest[c++] = (uint8_t)r; + dest[c++] = r; - if(c >= 20000) { + if(c >= BIGBUF_SIZE) { break; } } else { @@ -505,12 +481,10 @@ static int GetIso15693AnswerFromSniff(uint8_t *receivedResponse, int maxLen, int int i, j; int max = 0, maxPos=0; - int skip = 4; - -// if(GraphTraceLen < 1000) return; // THIS CHECKS FOR A BUFFER TO SMALL + int skip = 2; // First, correlate for SOF - for(i = 0; i < 19000; i++) { + for(i = 0; i < 38000; i++) { int corr = 0; for(j = 0; j < arraylen(FrameSOF); j += skip) { corr += FrameSOF[j]*dest[i+(j/skip)]; @@ -520,7 +494,7 @@ static int GetIso15693AnswerFromSniff(uint8_t *receivedResponse, int maxLen, int maxPos = i; } } -// DbpString("SOF at %d, correlation %d", maxPos,max/(arraylen(FrameSOF)/skip)); + if (DEBUG) Dbprintf("SOF at %d, correlation %d", maxPos,max/(arraylen(FrameSOF)/skip)); int k = 0; // this will be our return value @@ -534,10 +508,15 @@ static int GetIso15693AnswerFromSniff(uint8_t *receivedResponse, int maxLen, int memset(outBuf, 0, sizeof(outBuf)); uint8_t mask = 0x01; for(;;) { - int corr0 = 0, corr1 = 0, corrEOF = 0; + int corr0 = 0, corr00 = 0, corr01 = 0, corr1 = 0, corrEOF = 0; for(j = 0; j < arraylen(Logic0); j += skip) { corr0 += Logic0[j]*dest[i+(j/skip)]; } + corr01 = corr00 = corr0; + for(j = 0; j < arraylen(Logic0); j += skip) { + corr00 += Logic0[j]*dest[i+arraylen(Logic0)/skip+(j/skip)]; + corr01 += Logic1[j]*dest[i+arraylen(Logic0)/skip+(j/skip)]; + } for(j = 0; j < arraylen(Logic1); j += skip) { corr1 += Logic1[j]*dest[i+(j/skip)]; } @@ -545,11 +524,14 @@ static int GetIso15693AnswerFromSniff(uint8_t *receivedResponse, int maxLen, int corrEOF += FrameEOF[j]*dest[i+(j/skip)]; } // Even things out by the length of the target waveform. + corr00 *= 2; + corr01 *= 2; corr0 *= 4; corr1 *= 4; - if(corrEOF > corr1 && corrEOF > corr0) { - // DbpString("EOF at %d", i); + if(corrEOF > corr1 && corrEOF > corr00 && corrEOF > corr01) { + if (DEBUG) Dbprintf("EOF at %d, correlation %d (corr01: %d, corr00: %d, corr1: %d, corr0: %d)", + i, corrEOF, corr01, corr00, corr1, corr0); break; } else if(corr1 > corr0) { i += arraylen(Logic1)/skip; @@ -562,7 +544,7 @@ static int GetIso15693AnswerFromSniff(uint8_t *receivedResponse, int maxLen, int k++; mask = 0x01; } - if((i+(int)arraylen(FrameEOF)) >= 2000) { + if((i+(int)arraylen(FrameEOF)/skip) >= BIGBUF_SIZE) { DbpString("ran off end!"); break; } @@ -600,10 +582,10 @@ static void BuildIdentifyRequest(void); //----------------------------------------------------------------------------- void AcquireRawAdcSamplesIso15693(void) { + uint8_t *dest = BigBuf_get_addr(); + int c = 0; - uint8_t *dest = (uint8_t *)BigBuf; int getNext = 0; - int8_t prev = 0; FpgaDownloadAndGo(FPGA_BITSTREAM_HF); @@ -628,21 +610,14 @@ void AcquireRawAdcSamplesIso15693(void) break; } } - if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) { - volatile uint32_t r = AT91C_BASE_SSC->SSC_RHR; - (void)r; - } WDT_HIT(); } FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR); c = 0; - getNext = FALSE; + getNext = false; 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)) { int8_t b; b = (int8_t)AT91C_BASE_SSC->SSC_RHR; @@ -652,22 +627,11 @@ void AcquireRawAdcSamplesIso15693(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; - } + uint8_t r = AMPLITUDE(b, prev); - dest[c++] = (uint8_t)r; + dest[c++] = r; - if(c >= 2000) { + if(c >= 4000) { break; } } else { @@ -682,10 +646,10 @@ void AcquireRawAdcSamplesIso15693(void) void RecordRawAdcSamplesIso15693(void) { + uint8_t *dest = BigBuf_get_addr(); + int c = 0; - uint8_t *dest = (uint8_t *)BigBuf; int getNext = 0; - int8_t prev = 0; FpgaDownloadAndGo(FPGA_BITSTREAM_HF); @@ -703,11 +667,8 @@ void RecordRawAdcSamplesIso15693(void) FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR); c = 0; - getNext = FALSE; + getNext = false; 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)) { int8_t b; b = (int8_t)AT91C_BASE_SSC->SSC_RHR; @@ -717,22 +678,11 @@ 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; - } + uint8_t r = AMPLITUDE(b, prev); - dest[c++] = (uint8_t)r; + dest[c++] = r; - if(c >= 7000) { + if(c >= 14000) { break; } } else { @@ -836,24 +786,25 @@ 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]; 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; @@ -880,12 +831,12 @@ int SendDataTag(uint8_t *send, int sendlen, int init, int speed, uint8_t **recv) LED_C_OFF(); LED_D_OFF(); + if (init) Iso15693InitReader(); + int answerLen=0; - uint8_t *answer = (((uint8_t *)BigBuf) + 3660); - if (recv!=NULL) memset(BigBuf + 3660, 0, 100); + uint8_t *answer = BigBuf_get_addr() + 4000; + if (recv != NULL) memset(answer, 0, 100); - if (init) Iso15693InitReader(); - if (!speed) { // low speed (1 out of 256) CodeIso15693AsReader256(send, sendlen); @@ -1002,32 +953,31 @@ 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 answerLen3 = 0; + 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_get_addr() + 4000; + uint8_t *answer2 = BigBuf_get_addr() + 4100; + // uint8_t *answer3 = BigBuf_get_addr() + 4200; // Blank arrays - memset(BigBuf + 3660, 0, 300); + memset(answer1, 0x00, 200); - 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 +988,19 @@ 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 { - TagUID[0] = answer1[2]; TagUID[1] = answer1[3]; TagUID[2] = answer1[4]; @@ -1085,23 +1010,6 @@ 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); @@ -1110,27 +1018,26 @@ void ReaderIso15693(uint32_t parameter) // 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); + // Dbprintf("%d octets read from SELECT request:", answerLen2); + // DbdecodeIso15693Answer(answerLen2,answer2); + // Dbhexdump(answerLen2,answer2,true); - Dbprintf("%d octets read from XXX request:", answerLen3); - DbdecodeIso15693Answer(answerLen3,answer3); - Dbhexdump(answerLen3,answer3,true); + // Dbprintf("%d octets read from XXX request:", answerLen3); + // DbdecodeIso15693Answer(answerLen3,answer3); + // Dbhexdump(answerLen3,answer3,true); - // read all 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); @@ -1141,13 +1048,6 @@ void ReaderIso15693(uint32_t parameter) } } -// 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 +1056,29 @@ 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_get_addr() + 4000; + 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 +1086,26 @@ 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(); @@ -1264,7 +1163,7 @@ void BruteforceIso15693Afi(uint32_t speed) void DirectTag15693Command(uint32_t datalen,uint32_t speed, uint32_t recv, uint8_t data[]) { int recvlen=0; - uint8_t *recvbuf=(uint8_t *)BigBuf; + uint8_t *recvbuf = BigBuf_get_addr(); // UsbCommand n; if (DEBUG) { @@ -1275,12 +1174,8 @@ void DirectTag15693Command(uint32_t datalen,uint32_t speed, uint32_t recv, uint8 recvlen=SendDataTag(data,datalen,1,speed,(recv?&recvbuf:NULL)); if (recv) { -// n.cmd=/* CMD_ISO_15693_COMMAND_DONE */ CMD_ACK; -// n.arg[0]=recvlen>48?48:recvlen; -// memcpy(n.d.asBytes, recvbuf, 48); LED_B_ON(); - cmd_send(CMD_ACK,recvlen>48?48:recvlen,0,0,recvbuf,48); -// UsbSendPacket((uint8_t *)&n, sizeof(n)); + cmd_send(CMD_ACK,recvlen>48?48:recvlen,0,0,recvbuf,48); LED_B_OFF(); if (DEBUG) {