X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/654b6ae3f4bf56bc210022b603edbb1575e05dff..d38bb3acc3957efdac0204f147de1d8494a03966:/armsrc/iso14443b.c diff --git a/armsrc/iso14443b.c b/armsrc/iso14443b.c index cb8567fa..f276158f 100644 --- a/armsrc/iso14443b.c +++ b/armsrc/iso14443b.c @@ -10,14 +10,17 @@ // the `fake tag' modes. //----------------------------------------------------------------------------- +#include "iso14443b.h" + #include "proxmark3.h" #include "apps.h" #include "util.h" #include "string.h" - #include "iso14443crc.h" +#include "fpgaloader.h" +#include "BigBuf.h" -#define RECEIVE_SAMPLES_TIMEOUT 1000 // TR0 max is 256/fs = 256/(848kHz) = 302us or 64 samples from FPGA. 1000 seems to be much too high? +#define RECEIVE_SAMPLES_TIMEOUT 64 // TR0 max is 256/fs = 256/(848kHz) = 302us or 64 samples from FPGA #define ISO14443B_DMA_BUFFER_SIZE 128 // PCB Block number for APDUs @@ -325,6 +328,7 @@ static int GetIso14443bCommandFromReader(uint8_t *received, uint16_t *len) //----------------------------------------------------------------------------- void SimulateIso14443bTag(void) { + LED_A_ON(); // the only commands we understand is WUPB, AFI=0, Select All, N=1: static const uint8_t cmd1[] = { 0x05, 0x00, 0x08, 0x39, 0x73 }; // WUPB // ... and REQB, AFI=0, Normal Request, N=1: @@ -386,10 +390,7 @@ void SimulateIso14443bTag(void) break; } - if (tracing) { - uint8_t parity[MAX_PARITY_SIZE]; - LogTrace(receivedCmd, len, 0, 0, parity, true); - } + LogTrace(receivedCmd, len, 0, 0, NULL, true); // Good, look at the command now. if ( (len == sizeof(cmd1) && memcmp(receivedCmd, cmd1, len) == 0) @@ -463,12 +464,12 @@ void SimulateIso14443bTag(void) } // trace the response: - if (tracing) { - uint8_t parity[MAX_PARITY_SIZE]; - LogTrace(resp, respLen, 0, 0, parity, false); - } + LogTrace(resp, respLen, 0, 0, NULL, false); } + + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); + LED_A_OFF(); } //============================================================================= @@ -692,7 +693,7 @@ static void DemodInit(uint8_t *data) * Demodulate the samples we received from the tag, also log to tracebuffer * quiet: set to 'true' to disable debug output */ -static void GetSamplesFor14443bDemod(int n, bool quiet) +static void GetSamplesFor14443bDemod(int timeout, bool quiet) { int maxBehindBy = 0; bool gotFrame = false; @@ -716,7 +717,7 @@ static void GetSamplesFor14443bDemod(int n, bool quiet) while (!(AT91C_BASE_SSC->SSC_SR & AT91C_SSC_TXEMPTY)) // Setup and start DMA. - FpgaSetupSsc(FPGA_MAJOR_MODE_HF_READER_RX_XCORR); + FpgaSetupSsc(FPGA_MAJOR_MODE_HF_READER); FpgaSetupSscDma((uint8_t*) dmaBuf, ISO14443B_DMA_BUFFER_SIZE); uint16_t *upTo = dmaBuf; @@ -725,7 +726,7 @@ static void GetSamplesFor14443bDemod(int n, bool quiet) // Signal field is ON with the appropriate LED: LED_D_ON(); // And put the FPGA in the appropriate mode - FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR | FPGA_HF_READER_RX_XCORR_848_KHZ); + FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER | FPGA_HF_READER_SUBCARRIER_848_KHZ | FPGA_HF_READER_MODE_RECEIVE_IQ); for(;;) { int behindBy = (lastRxCounter - AT91C_BASE_PDC_SSC->PDC_RCR) & (ISO14443B_DMA_BUFFER_SIZE-1); @@ -754,7 +755,8 @@ static void GetSamplesFor14443bDemod(int n, bool quiet) break; } - if(samples > n) { + if(samples > timeout && Demod.state < DEMOD_PHASE_REF_TRAINING) { + LED_C_OFF(); break; } } @@ -763,9 +765,8 @@ static void GetSamplesFor14443bDemod(int n, bool quiet) if (!quiet) Dbprintf("max behindby = %d, samples = %d, gotFrame = %d, Demod.len = %d, Demod.sumI = %d, Demod.sumQ = %d", maxBehindBy, samples, gotFrame, Demod.len, Demod.sumI, Demod.sumQ); //Tracing - if (tracing && Demod.len > 0) { - uint8_t parity[MAX_PARITY_SIZE]; - LogTrace(Demod.output, Demod.len, 0, 0, parity, false); + if (Demod.len > 0) { + LogTrace(Demod.output, Demod.len, 0, 0, NULL, false); } } @@ -775,28 +776,21 @@ static void GetSamplesFor14443bDemod(int n, bool quiet) //----------------------------------------------------------------------------- static void TransmitFor14443b(void) { - int c; - - FpgaSetupSsc(FPGA_MAJOR_MODE_HF_READER_TX); - - // Signal field is ON with the appropriate Red LED - LED_D_ON(); - // Signal we are transmitting with the Green LED + FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER | FPGA_HF_READER_MODE_SEND_SHALLOW_MOD); LED_B_ON(); - FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_TX | FPGA_HF_READER_TX_SHALLOW_MOD); - - c = 0; - for(;;) { - if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) { - AT91C_BASE_SSC->SSC_THR = ~ToSend[c]; - c++; - if(c >= ToSendMax) { - break; - } + for(int c = 0; c < ToSendMax; c++) { + uint8_t data = ToSend[c]; + for (int i = 0; i < 8; i++) { + uint16_t send_word = (data & 0x80) ? 0x0000 : 0xffff; + while (!(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY))) ; + AT91C_BASE_SSC->SSC_THR = send_word; + while (!(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY))) ; + AT91C_BASE_SSC->SSC_THR = send_word; + data <<= 1; } WDT_HIT(); } - LED_B_OFF(); // Finished sending + LED_B_OFF(); } @@ -858,10 +852,7 @@ static void CodeAndTransmit14443bAsReader(const uint8_t *cmd, int len) { CodeIso14443bAsReader(cmd, len); TransmitFor14443b(); - if (tracing) { - uint8_t parity[MAX_PARITY_SIZE]; - LogTrace(cmd,len, 0, 0, parity, true); - } + LogTrace(cmd,len, 0, 0, NULL, true); } /* Sends an APDU to the tag @@ -869,6 +860,7 @@ static void CodeAndTransmit14443bAsReader(const uint8_t *cmd, int len) */ int iso14443b_apdu(uint8_t const *message, size_t message_length, uint8_t *response) { + LED_A_ON(); uint8_t message_frame[message_length + 4]; // PCB message_frame[0] = 0x0A | pcb_blocknum; @@ -883,8 +875,10 @@ int iso14443b_apdu(uint8_t const *message, size_t message_length, uint8_t *respo CodeAndTransmit14443bAsReader(message_frame, message_length + 4); // get response GetSamplesFor14443bDemod(RECEIVE_SAMPLES_TIMEOUT, true); + FpgaDisableTracing(); if(Demod.len < 3) { + LED_A_OFF(); return 0; } // TODO: Check CRC @@ -893,6 +887,7 @@ int iso14443b_apdu(uint8_t const *message, size_t message_length, uint8_t *respo { memcpy(response, Demod.output, Demod.len); } + LED_A_OFF(); return Demod.len; } @@ -942,13 +937,13 @@ int iso14443b_select_card() void iso14443b_setup() { FpgaDownloadAndGo(FPGA_BITSTREAM_HF); // Set up the synchronous serial port - FpgaSetupSsc(FPGA_MAJOR_MODE_HF_READER_TX); + FpgaSetupSsc(FPGA_MAJOR_MODE_HF_READER); // connect Demodulated Signal to ADC: SetAdcMuxFor(GPIO_MUXSEL_HIPKD); // Signal field is on with the appropriate LED LED_D_ON(); - FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_TX | FPGA_HF_READER_TX_SHALLOW_MOD); + FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER | FPGA_HF_READER_MODE_SEND_SHALLOW_MOD); DemodReset(); UartReset(); @@ -965,6 +960,7 @@ void iso14443b_setup() { //----------------------------------------------------------------------------- void ReadSTMemoryIso14443b(uint32_t dwLast) { + LED_A_ON(); uint8_t i = 0x00; FpgaDownloadAndGo(FPGA_BITSTREAM_HF); @@ -975,12 +971,12 @@ void ReadSTMemoryIso14443b(uint32_t dwLast) SpinDelay(200); SetAdcMuxFor(GPIO_MUXSEL_HIPKD); - FpgaSetupSsc(FPGA_MAJOR_MODE_HF_READER_RX_XCORR); + FpgaSetupSsc(FPGA_MAJOR_MODE_HF_READER); // Now give it time to spin up. // Signal field is on with the appropriate LED LED_D_ON(); - FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR | FPGA_HF_READER_RX_XCORR_848_KHZ); + FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER | FPGA_HF_READER_MODE_SEND_SHALLOW_MOD); SpinDelay(200); clear_trace(); @@ -992,9 +988,9 @@ void ReadSTMemoryIso14443b(uint32_t dwLast) GetSamplesFor14443bDemod(RECEIVE_SAMPLES_TIMEOUT, true); if (Demod.len == 0) { - DbpString("No response from tag"); - LED_D_OFF(); FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); + DbpString("No response from tag"); + LEDsoff(); return; } else { Dbprintf("Randomly generated Chip ID (+ 2 byte CRC): %02x %02x %02x", @@ -1009,24 +1005,24 @@ void ReadSTMemoryIso14443b(uint32_t dwLast) CodeAndTransmit14443bAsReader(cmd1, sizeof(cmd1)); GetSamplesFor14443bDemod(RECEIVE_SAMPLES_TIMEOUT, true); if (Demod.len != 3) { - Dbprintf("Expected 3 bytes from tag, got %d", Demod.len); - LED_D_OFF(); FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); + Dbprintf("Expected 3 bytes from tag, got %d", Demod.len); + LEDsoff(); return; } // Check the CRC of the answer: ComputeCrc14443(CRC_14443_B, Demod.output, 1 , &cmd1[2], &cmd1[3]); if(cmd1[2] != Demod.output[1] || cmd1[3] != Demod.output[2]) { - DbpString("CRC Error reading select response."); - LED_D_OFF(); FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); + DbpString("CRC Error reading select response."); + LEDsoff(); return; } // Check response from the tag: should be the same UID as the command we just sent: if (cmd1[1] != Demod.output[0]) { - Dbprintf("Bad response to SELECT from Tag, aborting: %02x %02x", cmd1[1], Demod.output[0]); - LED_D_OFF(); FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); + Dbprintf("Bad response to SELECT from Tag, aborting: %02x %02x", cmd1[1], Demod.output[0]); + LEDsoff(); return; } @@ -1037,9 +1033,9 @@ void ReadSTMemoryIso14443b(uint32_t dwLast) CodeAndTransmit14443bAsReader(cmd1, 3); // Only first three bytes for this one GetSamplesFor14443bDemod(RECEIVE_SAMPLES_TIMEOUT, true); if (Demod.len != 10) { - Dbprintf("Expected 10 bytes from tag, got %d", Demod.len); - LED_D_OFF(); FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); + Dbprintf("Expected 10 bytes from tag, got %d", Demod.len); + LEDsoff(); return; } // The check the CRC of the answer (use cmd1 as temporary variable): @@ -1068,9 +1064,9 @@ void ReadSTMemoryIso14443b(uint32_t dwLast) CodeAndTransmit14443bAsReader(cmd1, sizeof(cmd1)); GetSamplesFor14443bDemod(RECEIVE_SAMPLES_TIMEOUT, true); if (Demod.len != 6) { // Check if we got an answer from the tag - DbpString("Expected 6 bytes from tag, got less..."); - LED_D_OFF(); FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); + DbpString("Expected 6 bytes from tag, got less..."); + LEDsoff(); return; } // The check the CRC of the answer (use cmd1 as temporary variable): @@ -1090,8 +1086,8 @@ void ReadSTMemoryIso14443b(uint32_t dwLast) i++; } - LED_D_OFF(); FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); + LEDsoff(); } @@ -1114,6 +1110,7 @@ void ReadSTMemoryIso14443b(uint32_t dwLast) */ void RAMFUNC SnoopIso14443b(void) { + LED_A_ON(); FpgaDownloadAndGo(FPGA_BITSTREAM_HF); BigBuf_free(); @@ -1141,19 +1138,18 @@ void RAMFUNC SnoopIso14443b(void) Dbprintf(" tag -> Reader: %i bytes", MAX_FRAME_SIZE); Dbprintf(" DMA: %i bytes", ISO14443B_DMA_BUFFER_SIZE); - // Signal field is off, no reader signal, no tag signal - LEDsoff(); + // Signal field is off + LED_D_OFF(); // And put the FPGA in the appropriate mode - FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR | FPGA_HF_READER_RX_XCORR_848_KHZ | FPGA_HF_READER_RX_XCORR_SNOOP); + FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER | FPGA_HF_READER_SUBCARRIER_848_KHZ | FPGA_HF_READER_MODE_SNOOP_IQ); SetAdcMuxFor(GPIO_MUXSEL_HIPKD); // Setup for the DMA. - FpgaSetupSsc(FPGA_MAJOR_MODE_HF_READER_RX_XCORR); + FpgaSetupSsc(FPGA_MAJOR_MODE_HF_READER); upTo = dmaBuf; lastRxCounter = ISO14443B_DMA_BUFFER_SIZE; FpgaSetupSscDma((uint8_t*) dmaBuf, ISO14443B_DMA_BUFFER_SIZE); - uint8_t parity[MAX_PARITY_SIZE]; bool TagIsActive = false; bool ReaderIsActive = false; @@ -1198,9 +1194,7 @@ void RAMFUNC SnoopIso14443b(void) if (!TagIsActive) { // no need to try decoding reader data if the tag is sending if(Handle14443bUartBit(ci & 0x01)) { triggered = true; - if(tracing) { - LogTrace(Uart.output, Uart.byteCnt, samples, samples, parity, true); - } + LogTrace(Uart.output, Uart.byteCnt, samples, samples, NULL, true); /* And ready to receive another command. */ UartReset(); /* And also reset the demod code, which might have been */ @@ -1209,9 +1203,7 @@ void RAMFUNC SnoopIso14443b(void) } if(Handle14443bUartBit(cq & 0x01)) { triggered = true; - if(tracing) { - LogTrace(Uart.output, Uart.byteCnt, samples, samples, parity, true); - } + LogTrace(Uart.output, Uart.byteCnt, samples, samples, NULL, true); /* And ready to receive another command. */ UartReset(); /* And also reset the demod code, which might have been */ @@ -1223,13 +1215,8 @@ void RAMFUNC SnoopIso14443b(void) if(!ReaderIsActive && triggered) { // no need to try decoding tag data if the reader is sending or not yet triggered if(Handle14443bSamplesDemod(ci/2, cq/2)) { - //Use samples as a time measurement - if(tracing) - { - uint8_t parity[MAX_PARITY_SIZE]; - LogTrace(Demod.output, Demod.len, samples, samples, parity, false); - } + LogTrace(Demod.output, Demod.len, samples, samples, NULL, false); // And ready to receive another response. DemodReset(); } @@ -1239,13 +1226,13 @@ void RAMFUNC SnoopIso14443b(void) } FpgaDisableSscDma(); - LEDsoff(); DbpString("Snoop statistics:"); Dbprintf(" Max behind by: %i", maxBehindBy); Dbprintf(" Uart State: %x", Uart.state); Dbprintf(" Uart ByteCnt: %i", Uart.byteCnt); Dbprintf(" Uart ByteCntMax: %i", Uart.byteCntMax); Dbprintf(" Trace length: %i", BigBuf_get_traceLen()); + LEDsoff(); } @@ -1263,12 +1250,14 @@ void RAMFUNC SnoopIso14443b(void) */ void SendRawCommand14443B(uint32_t datalen, uint32_t recv, uint8_t powerfield, uint8_t data[]) { + LED_A_ON(); FpgaDownloadAndGo(FPGA_BITSTREAM_HF); SetAdcMuxFor(GPIO_MUXSEL_HIPKD); // switch field on and give tag some time to power up LED_D_ON(); - FpgaSetupSsc(FPGA_MAJOR_MODE_HF_READER_TX); + FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER | FPGA_HF_READER_MODE_SEND_SHALLOW_MOD); + FpgaSetupSsc(FPGA_MAJOR_MODE_HF_READER); SpinDelay(10); if (datalen){ @@ -1278,14 +1267,19 @@ void SendRawCommand14443B(uint32_t datalen, uint32_t recv, uint8_t powerfield, u if(recv) { GetSamplesFor14443bDemod(RECEIVE_SAMPLES_TIMEOUT, true); + FpgaDisableTracing(); uint16_t iLen = MIN(Demod.len, USB_CMD_DATA_SIZE); cmd_send(CMD_ACK, iLen, 0, 0, Demod.output, iLen); } + + FpgaDisableTracing(); } if(!powerfield) { FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); LED_D_OFF(); } + + LED_A_OFF(); }