//-----------------------------------------------------------------------------
+// Jonathan Westhues, split Nov 2006
+//
+// This code is licensed to you under the terms of the GNU GPL, version 2 or,
+// at your option, any later version. See the LICENSE.txt file for the text of
+// the license.
+//-----------------------------------------------------------------------------
// Routines to support ISO 14443. This includes both the reader software and
// the `fake tag' modes. At the moment only the Type B modulation is
// supported.
-// Jonathan Westhues, split Nov 2006
//-----------------------------------------------------------------------------
+
#include "proxmark3.h"
#include "apps.h"
#include "util.h"
+#include "string.h"
#include "iso14443crc.h"
#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
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;
}
* 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;
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;
} else if(s == 0x000) {
// This is EOF
LED_C_OFF();
- return TRUE;
Demod.state = DEMOD_UNSYNCD;
+ return TRUE;
} else {
Demod.state = DEMOD_UNSYNCD;
}
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;
// 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 |
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;
// 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;
// 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);
}
//-----------------------------------------------------------------------------
//
// 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;
(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++;
* 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;
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
// 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;
}
}
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); \
}
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");
}
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();
+ }
+}
+
projects / proxmark3-svn / blobdiff