X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/bd20f8f47847787e1f3e933043933272908c5beb..57d384004d17d27cb6c4c7971641e964b591b3aa:/armsrc/iso14443.c?ds=sidebyside diff --git a/armsrc/iso14443.c b/armsrc/iso14443.c index 92623f11..5e8eddd2 100644 --- a/armsrc/iso14443.c +++ b/armsrc/iso14443.c @@ -22,7 +22,7 @@ #define DEMOD_TRACE_SIZE 4096 #define READER_TAG_BUFFER_SIZE 2048 #define TAG_READER_BUFFER_SIZE 2048 -#define DMA_BUFFER_SIZE 1024 +#define DEMOD_DMA_BUFFER_SIZE 1024 //============================================================================= // An ISO 14443 Type B tag. We listen for commands from the reader, using @@ -269,7 +269,8 @@ static int Handle14443UartBit(int bit) break; } - if (Uart.state == STATE_ERROR_WAIT) LED_A_OFF(); // Error + // This row make the error blew circular buffer in hf 14b snoop + //if (Uart.state == STATE_ERROR_WAIT) LED_A_OFF(); // Error return FALSE; } @@ -465,7 +466,7 @@ static struct { * false if we are still waiting for some more * */ -static int Handle14443SamplesDemod(int ci, int cq) +static RAMFUNC int Handle14443SamplesDemod(int ci, int cq) { int v; @@ -537,7 +538,7 @@ static int Handle14443SamplesDemod(int ci, int cq) if(Demod.posCount < 12) { Demod.state = DEMOD_UNSYNCD; } else { - LED_C_ON(); // Got SOF + LED_C_ON(); // Got SOF Demod.state = DEMOD_AWAITING_START_BIT; Demod.posCount = 0; Demod.len = 0; @@ -598,8 +599,8 @@ static int Handle14443SamplesDemod(int ci, int cq) } else if(s == 0x000) { // This is EOF LED_C_OFF(); - return TRUE; Demod.state = DEMOD_UNSYNCD; + return TRUE; } else { Demod.state = DEMOD_UNSYNCD; } @@ -639,7 +640,7 @@ static void GetSamplesFor14443Demod(int weTx, int n, int quiet) int samples = 0; // Clear out the state of the "UART" that receives from the tag. - memset(BigBuf, 0x44, 400); + memset(BigBuf, 0x00, 400); Demod.output = (uint8_t *)BigBuf; Demod.len = 0; Demod.state = DEMOD_UNSYNCD; @@ -652,11 +653,11 @@ static void GetSamplesFor14443Demod(int weTx, int n, int quiet) // Setup for the DMA. dmaBuf = (int8_t *)(BigBuf + 32); upTo = dmaBuf; - lastRxCounter = DMA_BUFFER_SIZE; - FpgaSetupSscDma((uint8_t *)dmaBuf, DMA_BUFFER_SIZE); + lastRxCounter = DEMOD_DMA_BUFFER_SIZE; + FpgaSetupSscDma((uint8_t *)dmaBuf, DEMOD_DMA_BUFFER_SIZE); // Signal field is ON with the appropriate LED: - if (weTx) LED_D_ON(); else LED_D_OFF(); + if (weTx) LED_D_ON(); else 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 | @@ -666,20 +667,20 @@ static void GetSamplesFor14443Demod(int weTx, int n, int quiet) int behindBy = lastRxCounter - AT91C_BASE_PDC_SSC->PDC_RCR; if(behindBy > max) max = behindBy; - while(((lastRxCounter-AT91C_BASE_PDC_SSC->PDC_RCR) & (DMA_BUFFER_SIZE-1)) + while(((lastRxCounter-AT91C_BASE_PDC_SSC->PDC_RCR) & (DEMOD_DMA_BUFFER_SIZE-1)) > 2) { ci = upTo[0]; cq = upTo[1]; upTo += 2; - if(upTo - dmaBuf > DMA_BUFFER_SIZE) { - upTo -= DMA_BUFFER_SIZE; + if(upTo - dmaBuf > DEMOD_DMA_BUFFER_SIZE) { + upTo -= DEMOD_DMA_BUFFER_SIZE; AT91C_BASE_PDC_SSC->PDC_RNPR = (uint32_t) upTo; - AT91C_BASE_PDC_SSC->PDC_RNCR = DMA_BUFFER_SIZE; + AT91C_BASE_PDC_SSC->PDC_RNCR = DEMOD_DMA_BUFFER_SIZE; } lastRxCounter -= 2; if(lastRxCounter <= 0) { - lastRxCounter += DMA_BUFFER_SIZE; + lastRxCounter += DEMOD_DMA_BUFFER_SIZE; } samples += 2; @@ -786,7 +787,7 @@ static void TransmitFor14443(void) // Code a layer 2 command (string of octets, including CRC) into ToSend[], // so that it is ready to transmit to the tag using TransmitFor14443(). //----------------------------------------------------------------------------- -void CodeIso14443bAsReader(const uint8_t *cmd, int len) +static void CodeIso14443bAsReader(const uint8_t *cmd, int len) { int i, j; uint8_t b; @@ -843,32 +844,14 @@ void CodeIso14443bAsReader(const uint8_t *cmd, int len) // responses. // The command name is misleading, it actually decodes the reponse in HEX // into the output buffer (read the result using hexsamples, not hisamples) +// +// obsolete function only for test //----------------------------------------------------------------------------- void AcquireRawAdcSamplesIso14443(uint32_t parameter) { uint8_t cmd1[] = { 0x05, 0x00, 0x08, 0x39, 0x73 }; - // Make sure that we start from off, since the tags are stateful; - // confusing things will happen if we don't reset them between reads. - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - LED_D_OFF(); - SpinDelay(200); - - SetAdcMuxFor(GPIO_MUXSEL_HIPKD); - FpgaSetupSsc(); - - // 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); - SpinDelay(200); - - CodeIso14443bAsReader(cmd1, sizeof(cmd1)); - TransmitFor14443(); -// LED_A_ON(); - GetSamplesFor14443Demod(TRUE, 2000, FALSE); -// LED_A_OFF(); + SendRawCommand14443B(sizeof(cmd1),1,1,cmd1); } //----------------------------------------------------------------------------- @@ -880,16 +863,7 @@ void AcquireRawAdcSamplesIso14443(uint32_t parameter) // // I tried to be systematic and check every answer of the tag, every CRC, etc... //----------------------------------------------------------------------------- -void ReadSRI512Iso14443(uint32_t parameter) -{ - ReadSTMemoryIso14443(parameter,0x0F); -} -void ReadSRIX4KIso14443(uint32_t parameter) -{ - ReadSTMemoryIso14443(parameter,0x7F); -} - -void ReadSTMemoryIso14443(uint32_t parameter,uint32_t dwLast) +void ReadSTMemoryIso14443(uint32_t dwLast) { uint8_t i = 0x00; @@ -973,8 +947,8 @@ void ReadSTMemoryIso14443(uint32_t parameter,uint32_t dwLast) (Demod.output[7]<<24) + (Demod.output[6]<<16) + (Demod.output[5]<<8) + Demod.output[4], (Demod.output[3]<<24) + (Demod.output[2]<<16) + (Demod.output[1]<<8) + Demod.output[0]); - // Now loop to read all 16 blocks, address from 0 to 15 - DbpString("Tag memory dump, block 0 to 15"); + // Now loop to read all 16 blocks, address from 0 to last block + Dbprintf("Tag memory dump, block 0 to %d",dwLast); cmd1[0] = 0x08; i = 0x00; dwLast++; @@ -1028,14 +1002,14 @@ void ReadSTMemoryIso14443(uint32_t parameter,uint32_t dwLast) * 0-4095 : Demodulated samples receive (4096 bytes) - DEMOD_TRACE_SIZE * 4096-6143 : Last Received command, 2048 bytes (reader->tag) - READER_TAG_BUFFER_SIZE * 6144-8191 : Last Received command, 2048 bytes(tag->reader) - TAG_READER_BUFFER_SIZE - * 8192-9215 : DMA Buffer, 1024 bytes (samples) - DMA_BUFFER_SIZE + * 8192-9215 : DMA Buffer, 1024 bytes (samples) - DEMOD_DMA_BUFFER_SIZE */ -void SnoopIso14443(void) +void RAMFUNC SnoopIso14443(void) { // We won't start recording the frames that we acquire until we trigger; // a good trigger condition to get started is probably when we see a // response from the tag. - int triggered = FALSE; + int triggered = TRUE; // The command (reader -> tag) that we're working on receiving. uint8_t *receivedCmd = (uint8_t *)(BigBuf) + DEMOD_TRACE_SIZE; @@ -1072,16 +1046,12 @@ void SnoopIso14443(void) Uart.byteCntMax = 100; Uart.state = STATE_UNSYNCD; - // Print some debug information about the buffer sizes - Dbprintf("Snooping buffers initialized:"); - Dbprintf(" Trace: %i bytes", DEMOD_TRACE_SIZE); - Dbprintf(" Reader -> tag: %i bytes", READER_TAG_BUFFER_SIZE); - Dbprintf(" tag -> Reader: %i bytes", TAG_READER_BUFFER_SIZE); - Dbprintf(" DMA: %i bytes", DMA_BUFFER_SIZE); - - // Use a counter for blinking the LED - long ledCount=0; - long ledFlashAt=200000; + // Print some debug information about the buffer sizes + Dbprintf("Snooping buffers initialized:"); + Dbprintf(" Trace: %i bytes", DEMOD_TRACE_SIZE); + Dbprintf(" Reader -> tag: %i bytes", READER_TAG_BUFFER_SIZE); + Dbprintf(" tag -> Reader: %i bytes", TAG_READER_BUFFER_SIZE); + Dbprintf(" DMA: %i bytes", DEMOD_DMA_BUFFER_SIZE); // And put the FPGA in the appropriate mode // Signal field is off with the appropriate LED @@ -1094,26 +1064,19 @@ void SnoopIso14443(void) // Setup for the DMA. FpgaSetupSsc(); upTo = dmaBuf; - lastRxCounter = DMA_BUFFER_SIZE; - FpgaSetupSscDma((uint8_t *)dmaBuf, DMA_BUFFER_SIZE); + lastRxCounter = DEMOD_DMA_BUFFER_SIZE; + FpgaSetupSscDma((uint8_t *)dmaBuf, DEMOD_DMA_BUFFER_SIZE); + + LED_A_ON(); + // And now we loop, receiving samples. for(;;) { - // Blink the LED while Snooping - ledCount++; - if (ledCount == ledFlashAt) { - LED_D_ON(); - } - if (ledCount >= 2*ledFlashAt) { - LED_D_OFF(); - ledCount=0; - } - int behindBy = (lastRxCounter - AT91C_BASE_PDC_SSC->PDC_RCR) & - (DMA_BUFFER_SIZE-1); + (DEMOD_DMA_BUFFER_SIZE-1); if(behindBy > maxBehindBy) { maxBehindBy = behindBy; - if(behindBy > (DMA_BUFFER_SIZE-2)) { // TODO: understand whether we can increase/decrease as we want or not? - Dbprintf("blew circular buffer! behindBy=%x", behindBy); + if(behindBy > (DEMOD_DMA_BUFFER_SIZE-2)) { // TODO: understand whether we can increase/decrease as we want or not? + Dbprintf("blew circular buffer! behindBy=0x%x", behindBy); goto done; } } @@ -1123,18 +1086,17 @@ void SnoopIso14443(void) cq = upTo[1]; upTo += 2; lastRxCounter -= 2; - if(upTo - dmaBuf > DMA_BUFFER_SIZE) { - upTo -= DMA_BUFFER_SIZE; - lastRxCounter += DMA_BUFFER_SIZE; + if(upTo - dmaBuf > DEMOD_DMA_BUFFER_SIZE) { + upTo -= DEMOD_DMA_BUFFER_SIZE; + lastRxCounter += DEMOD_DMA_BUFFER_SIZE; AT91C_BASE_PDC_SSC->PDC_RNPR = (uint32_t) upTo; - AT91C_BASE_PDC_SSC->PDC_RNCR = DMA_BUFFER_SIZE; + AT91C_BASE_PDC_SSC->PDC_RNCR = DEMOD_DMA_BUFFER_SIZE; } samples += 2; #define HANDLE_BIT_IF_BODY \ if(triggered) { \ - ledFlashAt=30000; \ trace[traceLen++] = ((samples >> 0) & 0xff); \ trace[traceLen++] = ((samples >> 8) & 0xff); \ trace[traceLen++] = ((samples >> 16) & 0xff); \ @@ -1190,13 +1152,15 @@ void SnoopIso14443(void) } triggered = TRUE; + LED_A_OFF(); + LED_B_ON(); // And ready to receive another response. memset(&Demod, 0, sizeof(Demod)); Demod.output = receivedResponse; Demod.state = DEMOD_UNSYNCD; } - WDT_HIT(); + WDT_HIT(); if(BUTTON_PRESS()) { DbpString("cancelled"); @@ -1205,12 +1169,67 @@ void SnoopIso14443(void) } done: - LED_D_OFF(); - AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTDIS; + LED_A_OFF(); + LED_B_OFF(); + LED_C_OFF(); + AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTDIS; DbpString("Snoop statistics:"); - Dbprintf(" Max behind by: %i", maxBehindBy); + 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", traceLen); } + +/* + * Send raw command to tag ISO14443B + * @Input + * datalen len of buffer data + * recv bool when true wait for data from tag and send to client + * powerfield bool leave the field on when true + * data buffer with byte to send + * + * @Output + * none + * + */ + +void SendRawCommand14443B(uint32_t datalen, uint32_t recv,uint8_t powerfield, uint8_t data[]) +{ + if(!powerfield) + { + // Make sure that we start from off, since the tags are stateful; + // confusing things will happen if we don't reset them between reads. + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); + LED_D_OFF(); + SpinDelay(200); + } + + if(!GETBIT(GPIO_LED_D)) + { + SetAdcMuxFor(GPIO_MUXSEL_HIPKD); + FpgaSetupSsc(); + + // 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); + SpinDelay(200); + } + + CodeIso14443bAsReader(data, datalen); + TransmitFor14443(); + if(recv) + { + uint16_t iLen = MIN(Demod.len,USB_CMD_DATA_SIZE); + GetSamplesFor14443Demod(TRUE, 2000, TRUE); + cmd_send(CMD_ACK,iLen,0,0,Demod.output,iLen); + } + if(!powerfield) + { + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); + LED_D_OFF(); + } +} +