X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/a3bef9863b9e06a820c7559b9caffeaaa1bb575b..ece38ef311b28eefb1d716937139aad9ee00985c:/armsrc/iso15693.c?ds=sidebyside diff --git a/armsrc/iso15693.c b/armsrc/iso15693.c index fff8b370..3b39d576 100644 --- a/armsrc/iso15693.c +++ b/armsrc/iso15693.c @@ -132,7 +132,7 @@ void CodeIso15693AsReader(uint8_t *cmd, int n) { // EOF ToSend[++ToSendMax] = 0x20; //0010 + 0000 padding - + ToSendMax++; } @@ -249,14 +249,18 @@ void CodeIso15693AsTag(uint8_t *cmd, size_t len) { void TransmitTo15693Tag(const uint8_t *cmd, int len, uint32_t *start_time) { FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER | FPGA_HF_READER_MODE_SEND_FULL_MOD); - + + if (*start_time < DELAY_ARM_TO_TAG) { + *start_time = DELAY_ARM_TO_TAG; + } + *start_time = (*start_time - DELAY_ARM_TO_TAG) & 0xfffffff0; while (GetCountSspClk() > *start_time) { // we may miss the intended time *start_time += 16; // next possible time } - + while (GetCountSspClk() < *start_time) /* wait */ ; @@ -275,7 +279,7 @@ void TransmitTo15693Tag(const uint8_t *cmd, int len, uint32_t *start_time) { WDT_HIT(); } LED_B_OFF(); - + *start_time = *start_time + DELAY_ARM_TO_TAG; } @@ -289,7 +293,7 @@ void TransmitTo15693Reader(const uint8_t *cmd, size_t len, uint32_t *start_time, FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_SIMULATOR | FPGA_HF_SIMULATOR_MODULATE_424K); uint32_t modulation_start_time = *start_time - DELAY_ARM_TO_READER + 3 * 8; // no need to transfer the unmodulated start of SOF - + while (GetCountSspClk() > (modulation_start_time & 0xfffffff8) + 3) { // we will miss the intended time if (slot_time) { modulation_start_time += slot_time; // use next available slot @@ -298,7 +302,7 @@ void TransmitTo15693Reader(const uint8_t *cmd, size_t len, uint32_t *start_time, } } - while (GetCountSspClk() < (modulation_start_time & 0xfffffff8)) + while (GetCountSspClk() < (modulation_start_time & 0xfffffff8)) /* wait */ ; uint8_t shift_delay = modulation_start_time & 0x00000007; @@ -414,7 +418,7 @@ static int inline __attribute__((always_inline)) Handle15693SamplesFromTag(uint1 // DecodeTag->posCount = 2; DecodeTag->state = STATE_TAG_SOF_HIGH; break; - + case STATE_TAG_SOF_HIGH: // waiting for 10 times high. Take average over the last 8 if (amplitude > DecodeTag->threshold_sof) { @@ -428,7 +432,7 @@ static int inline __attribute__((always_inline)) Handle15693SamplesFromTag(uint1 } } else { // high phase was too short DecodeTag->posCount = 1; - DecodeTag->previous_amplitude = MAX_PREVIOUS_AMPLITUDE; + DecodeTag->previous_amplitude = amplitude; DecodeTag->state = STATE_TAG_SOF_LOW; } break; @@ -444,18 +448,18 @@ static int inline __attribute__((always_inline)) Handle15693SamplesFromTag(uint1 DecodeTag->sum2 = 0; DecodeTag->posCount = 2; DecodeTag->state = STATE_TAG_RECEIVING_DATA; - // FpgaDisableTracing(); // DEBUGGING - // Dbprintf("amplitude = %d, threshold_sof = %d, threshold_half/4 = %d, previous_amplitude = %d", - // amplitude, - // DecodeTag->threshold_sof, - // DecodeTag->threshold_half/4, - // DecodeTag->previous_amplitude); // DEBUGGING + FpgaDisableTracing(); // DEBUGGING + Dbprintf("amplitude = %d, threshold_sof = %d, threshold_half/4 = %d, previous_amplitude = %d", + amplitude, + DecodeTag->threshold_sof, + DecodeTag->threshold_half/4, + DecodeTag->previous_amplitude); // DEBUGGING LED_C_ON(); } else { DecodeTag->posCount++; if (DecodeTag->posCount > 13) { // high phase too long DecodeTag->posCount = 0; - DecodeTag->previous_amplitude = MAX_PREVIOUS_AMPLITUDE; + DecodeTag->previous_amplitude = amplitude; DecodeTag->state = STATE_TAG_SOF_LOW; LED_C_OFF(); } @@ -478,7 +482,7 @@ static int inline __attribute__((always_inline)) Handle15693SamplesFromTag(uint1 DecodeTag->state = STATE_TAG_EOF; } else { DecodeTag->posCount = 0; - DecodeTag->previous_amplitude = MAX_PREVIOUS_AMPLITUDE; + DecodeTag->previous_amplitude = amplitude; DecodeTag->state = STATE_TAG_SOF_LOW; LED_C_OFF(); } @@ -508,7 +512,7 @@ static int inline __attribute__((always_inline)) Handle15693SamplesFromTag(uint1 // logic 0 if (DecodeTag->lastBit == SOF_PART1) { // incomplete SOF DecodeTag->posCount = 0; - DecodeTag->previous_amplitude = MAX_PREVIOUS_AMPLITUDE; + DecodeTag->previous_amplitude = amplitude; DecodeTag->state = STATE_TAG_SOF_LOW; LED_C_OFF(); } else { @@ -522,7 +526,7 @@ static int inline __attribute__((always_inline)) Handle15693SamplesFromTag(uint1 if (DecodeTag->len > DecodeTag->max_len) { // buffer overflow, give up DecodeTag->posCount = 0; - DecodeTag->previous_amplitude = MAX_PREVIOUS_AMPLITUDE; + DecodeTag->previous_amplitude = amplitude; DecodeTag->state = STATE_TAG_SOF_LOW; LED_C_OFF(); } @@ -561,7 +565,7 @@ static int inline __attribute__((always_inline)) Handle15693SamplesFromTag(uint1 DecodeTag->state = STATE_TAG_EOF_TAIL; } else { DecodeTag->posCount = 0; - DecodeTag->previous_amplitude = MAX_PREVIOUS_AMPLITUDE; + DecodeTag->previous_amplitude = amplitude; DecodeTag->state = STATE_TAG_SOF_LOW; LED_C_OFF(); } @@ -585,7 +589,7 @@ static int inline __attribute__((always_inline)) Handle15693SamplesFromTag(uint1 return true; } else { DecodeTag->posCount = 0; - DecodeTag->previous_amplitude = MAX_PREVIOUS_AMPLITUDE; + DecodeTag->previous_amplitude = amplitude; DecodeTag->state = STATE_TAG_SOF_LOW; LED_C_OFF(); } @@ -598,8 +602,7 @@ static int inline __attribute__((always_inline)) Handle15693SamplesFromTag(uint1 } -static void DecodeTagInit(DecodeTag_t *DecodeTag, uint8_t *data, uint16_t max_len) -{ +static void DecodeTagInit(DecodeTag_t *DecodeTag, uint8_t *data, uint16_t max_len) { DecodeTag->previous_amplitude = MAX_PREVIOUS_AMPLITUDE; DecodeTag->posCount = 0; DecodeTag->state = STATE_TAG_SOF_LOW; @@ -608,8 +611,7 @@ static void DecodeTagInit(DecodeTag_t *DecodeTag, uint8_t *data, uint16_t max_le } -static void DecodeTagReset(DecodeTag_t *DecodeTag) -{ +static void DecodeTagReset(DecodeTag_t *DecodeTag) { DecodeTag->posCount = 0; DecodeTag->state = STATE_TAG_SOF_LOW; DecodeTag->previous_amplitude = MAX_PREVIOUS_AMPLITUDE; @@ -649,10 +651,10 @@ int GetIso15693AnswerFromTag(uint8_t* response, uint16_t max_len, uint16_t timeo samples++; if (samples == 1) { - // DMA has transferred the very first data + // DMA has transferred the very first data dma_start_time = GetCountSspClk() & 0xfffffff0; } - + uint16_t tagdata = *upTo++; if(upTo >= dmaBuf + ISO15693_DMA_BUFFER_SIZE) { // we have read all of the DMA buffer content. @@ -680,7 +682,7 @@ int GetIso15693AnswerFromTag(uint8_t* response, uint16_t max_len, uint16_t timeo } if (samples > timeout && DecodeTag.state < STATE_TAG_RECEIVING_DATA) { - ret = -1; // timeout + ret = -1; // timeout break; } @@ -699,9 +701,9 @@ int GetIso15693AnswerFromTag(uint8_t* response, uint16_t max_len, uint16_t timeo - DecodeTag.len * 8 * 8 * 16 // time for byte transfers - 32 * 16 // time for SOF transfer - (DecodeTag.lastBit != SOF_PART2?32*16:0); // time for EOF transfer - + if (DEBUG) Dbprintf("timing: sof_time = %d, eof_time = %d", sof_time, *eof_time); - + LogTrace_ISO15693(DecodeTag.output, DecodeTag.len, sof_time*4, *eof_time*4, NULL, false); return DecodeTag.len; @@ -1089,20 +1091,19 @@ static void BuildIdentifyRequest(void) //----------------------------------------------------------------------------- void AcquireRawAdcSamplesIso15693(void) { - LEDsoff(); LED_A_ON(); uint8_t *dest = BigBuf_get_addr(); FpgaDownloadAndGo(FPGA_BITSTREAM_HF); FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER); + LED_D_ON(); FpgaSetupSsc(FPGA_MAJOR_MODE_HF_READER); SetAdcMuxFor(GPIO_MUXSEL_HIPKD); BuildIdentifyRequest(); // Give the tags time to energize - LED_D_ON(); SpinDelay(100); // Now send the command @@ -1129,6 +1130,7 @@ void AcquireRawAdcSamplesIso15693(void) void SnoopIso15693(void) { LED_A_ON(); + FpgaDownloadAndGo(FPGA_BITSTREAM_HF); BigBuf_free(); @@ -1348,17 +1350,13 @@ static void BuildInventoryResponse(uint8_t *uid) // return: length of received data, or -1 for timeout int SendDataTag(uint8_t *send, int sendlen, bool init, int speed, uint8_t *recv, uint16_t max_recv_len, uint32_t start_time, uint32_t *eof_time) { - LED_A_ON(); - LED_B_OFF(); - LED_C_OFF(); - if (init) { Iso15693InitReader(); StartCountSspClk(); } - + int answerLen = 0; - + if (!speed) { // low speed (1 out of 256) CodeIso15693AsReader256(send, sendlen); @@ -1367,18 +1365,13 @@ int SendDataTag(uint8_t *send, int sendlen, bool init, int speed, uint8_t *recv, CodeIso15693AsReader(send, sendlen); } - if (start_time == 0) { - start_time = GetCountSspClk(); - } TransmitTo15693Tag(ToSend, ToSendMax, &start_time); // Now wait for a response if (recv != NULL) { - answerLen = GetIso15693AnswerFromTag(recv, max_recv_len, DELAY_ISO15693_VCD_TO_VICC_READER * 2, eof_time); + answerLen = GetIso15693AnswerFromTag(recv, max_recv_len, ISO15693_READER_TIMEOUT, eof_time); } - LED_A_OFF(); - return answerLen; } @@ -1462,9 +1455,8 @@ void SetDebugIso15693(uint32_t debug) { // Simulate an ISO15693 reader, perform anti-collision and then attempt to read a sector. // all demodulation performed in arm rather than host. - greg //--------------------------------------------------------------------------------------- -void ReaderIso15693(uint32_t parameter) -{ - LEDsoff(); +void ReaderIso15693(uint32_t parameter) { + LED_A_ON(); set_tracing(true); @@ -1564,9 +1556,8 @@ void ReaderIso15693(uint32_t parameter) // Simulate an ISO15693 TAG. // For Inventory command: print command and send Inventory Response with given UID // TODO: interpret other reader commands and send appropriate response -void SimTagIso15693(uint32_t parameter, uint8_t *uid) -{ - LEDsoff(); +void SimTagIso15693(uint32_t parameter, uint8_t *uid) { + LED_A_ON(); FpgaDownloadAndGo(FPGA_BITSTREAM_HF); @@ -1597,7 +1588,8 @@ void SimTagIso15693(uint32_t parameter, uint8_t *uid) } FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - LEDsoff(); + LED_D_OFF(); + LED_A_OFF(); } @@ -1605,7 +1597,6 @@ void SimTagIso15693(uint32_t parameter, uint8_t *uid) // (some manufactures offer a way to read the AFI, though) void BruteforceIso15693Afi(uint32_t speed) { - LEDsoff(); LED_A_ON(); uint8_t data[6]; @@ -1648,17 +1639,19 @@ void BruteforceIso15693Afi(uint32_t speed) Dbprintf("AFI Bruteforcing done."); FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - LEDsoff(); + LED_D_OFF(); + LED_A_OFF(); + } // 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[]) { + LED_A_ON(); + int recvlen = 0; uint8_t recvbuf[ISO15693_MAX_RESPONSE_LENGTH]; uint32_t eof_time; - - LED_A_ON(); if (DEBUG) { Dbprintf("SEND:"); @@ -1695,17 +1688,16 @@ void DirectTag15693Command(uint32_t datalen, uint32_t speed, uint32_t recv, uint //----------------------------------------------------------------------------- // Set the UID to the tag (based on Iceman work). -void SetTag15693Uid(uint8_t *uid) -{ - uint8_t cmd[4][9] = {0x00}; +void SetTag15693Uid(uint8_t *uid) { + LED_A_ON(); + + uint8_t cmd[4][9] = {0x00}; uint16_t crc; int recvlen = 0; uint8_t recvbuf[ISO15693_MAX_RESPONSE_LENGTH]; uint32_t eof_time; - - LED_A_ON(); // Command 1 : 02213E00000000 cmd[0][0] = 0x02; @@ -1767,8 +1759,6 @@ void SetTag15693Uid(uint8_t *uid) cmd_send(CMD_ACK, recvlen>ISO15693_MAX_RESPONSE_LENGTH?ISO15693_MAX_RESPONSE_LENGTH:recvlen, 0, 0, recvbuf, ISO15693_MAX_RESPONSE_LENGTH); } - LED_D_OFF(); - LED_A_OFF(); }