//-----------------------------------------------------------------------------
// Jonathan Westhues, split Nov 2006
// Modified by Greg Jones, Jan 2009
+// Modified by Adrian Dabrowski "atrox", Mar-Sept 2010,Oct 2011
//
// 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
// Modified to perform modulation onboard in arm rather than on PC
// Also added additional reader commands (SELECT, READ etc.)
//-----------------------------------------------------------------------------
+// The ISO 15693 describes two transmission modes from reader to tag, and 4
+// transmission modes from tag to reader. As of Mar 2010 this code only
+// supports one of each: "1of4" mode from reader to tag, and the highspeed
+// variant with one subcarrier from card to reader.
+// As long, as the card fully support ISO 15693 this is no problem, since the
+// reader chooses both data rates, but some non-standard tags do not. Further for
+// the simulation to work, we will need to support all data rates.
+//
+// VCD (reader) -> VICC (tag)
+// 1 out of 256:
+// data rate: 1,66 kbit/s (fc/8192)
+// used for long range
+// 1 out of 4:
+// data rate: 26,48 kbit/s (fc/512)
+// used for short range, high speed
+//
+// VICC (tag) -> VCD (reader)
+// Modulation:
+// ASK / one subcarrier (423,75 khz)
+// FSK / two subcarriers (423,75 khz && 484,28 khz)
+// Data Rates / Modes:
+// low ASK: 6,62 kbit/s
+// low FSK: 6.67 kbit/s
+// high ASK: 26,48 kbit/s
+// high FSK: 26,69 kbit/s
+//-----------------------------------------------------------------------------
+// added "1 out of 256" mode (for VCD->PICC) - atrox 20100911
+
+
+// Random Remarks:
+// *) UID is always used "transmission order" (LSB), which is reverse to display order
+
+// TODO / BUGS / ISSUES:
+// *) writing to tags takes longer: we miss the answer from the tag in most cases
+// -> tweak the read-timeout times
+// *) signal decoding from the card is still a bit shaky.
+// *) signal decoding is unable to detect collissions.
+// *) add anti-collission support for inventory-commands
+// *) read security status of a block
+// *) sniffing and simulation do only support one transmission mode. need to support
+// all 8 transmission combinations
+// *) remove or refactor code under "depricated"
+// *) document all the functions
+
#include "proxmark3.h"
#include "util.h"
#include "apps.h"
#include "string.h"
+#include "iso15693tools.h"
+#include "cmd.h"
-// FROM winsrc\prox.h //////////////////////////////////
#define arraylen(x) (sizeof(x)/sizeof((x)[0]))
-//-----------------------------------------------------------------------------
-// Map a sequence of octets (~layer 2 command) into the set of bits to feed
-// to the FPGA, to transmit that command to the tag.
-//-----------------------------------------------------------------------------
+static int DEBUG = 0;
- // The sampling rate is 106.353 ksps/s, for T = 18.8 us
-
- // SOF defined as
- // 1) Unmodulated time of 56.64us
- // 2) 24 pulses of 423.75khz
- // 3) logic '1' (unmodulated for 18.88us followed by 8 pulses of 423.75khz)
-
- static const int FrameSOF[] = {
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- -1, -1, -1, -1,
- -1, -1, -1, -1,
- 1, 1, 1, 1,
- 1, 1, 1, 1
- };
- static const int Logic0[] = {
- 1, 1, 1, 1,
- 1, 1, 1, 1,
- -1, -1, -1, -1,
- -1, -1, -1, -1
- };
- static const int Logic1[] = {
- -1, -1, -1, -1,
- -1, -1, -1, -1,
- 1, 1, 1, 1,
- 1, 1, 1, 1
- };
-
- // EOF defined as
- // 1) logic '0' (8 pulses of 423.75khz followed by unmodulated for 18.88us)
- // 2) 24 pulses of 423.75khz
- // 3) Unmodulated time of 56.64us
-
- static const int FrameEOF[] = {
- 1, 1, 1, 1,
- 1, 1, 1, 1,
- -1, -1, -1, -1,
- -1, -1, -1, -1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
- };
+///////////////////////////////////////////////////////////////////////
+// ISO 15693 Part 2 - Air Interface
+// This section basicly contains transmission and receiving of bits
+///////////////////////////////////////////////////////////////////////
+#define FrameSOF Iso15693FrameSOF
+#define Logic0 Iso15693Logic0
+#define Logic1 Iso15693Logic1
+#define FrameEOF Iso15693FrameEOF
+
+#define Crc(data,datalen) Iso15693Crc(data,datalen)
+#define AddCrc(data,datalen) Iso15693AddCrc(data,datalen)
+#define sprintUID(target,uid) Iso15693sprintUID(target,uid)
+
+// approximate amplitude=sqrt(ci^2+cq^2)
+#define AMPLITUDE(ci, cq) (MAX(ABS(ci), ABS(cq)) + MIN(ABS(ci), ABS(cq))/2)
+
+// DMA buffer
+#define ISO15693_DMA_BUFFER_SIZE 128
+
+// ---------------------------
+// Signal Processing
+// ---------------------------
+
+// prepare data using "1 out of 4" code for later transmission
+// resulting data rate is 26,48 kbit/s (fc/512)
+// cmd ... data
+// n ... length of data
static void CodeIso15693AsReader(uint8_t *cmd, int n)
{
int i, j;
ToSendStuffBit(1);
}
+ // SOF for 1of4
ToSendStuffBit(0);
ToSendStuffBit(1);
ToSendStuffBit(1);
}
}
}
+ // EOF
+ ToSendStuffBit(1);
+ ToSendStuffBit(1);
+ ToSendStuffBit(0);
+ ToSendStuffBit(1);
+
+ // Fill remainder of last byte with 1
+ for(i = 0; i < 4; i++) {
+ ToSendStuffBit(1);
+ }
+
+ ToSendMax++;
+}
+
+// encode data using "1 out of 256" scheme
+// data rate is 1,66 kbit/s (fc/8192)
+// is designed for more robust communication over longer distances
+static void CodeIso15693AsReader256(uint8_t *cmd, int n)
+{
+ int i, j;
+
+ ToSendReset();
+
+ // Give it a bit of slack at the beginning
+ for(i = 0; i < 24; i++) {
+ ToSendStuffBit(1);
+ }
+
+ // SOF for 1of256
+ ToSendStuffBit(0);
+ ToSendStuffBit(1);
+ ToSendStuffBit(1);
+ ToSendStuffBit(1);
+ ToSendStuffBit(1);
+ ToSendStuffBit(1);
+ ToSendStuffBit(1);
+ ToSendStuffBit(0);
+
+ for(i = 0; i < n; i++) {
+ for (j = 0; j<=255; j++) {
+ if (cmd[i]==j) {
+ ToSendStuffBit(1);
+ ToSendStuffBit(0);
+ } else {
+ ToSendStuffBit(1);
+ ToSendStuffBit(1);
+ }
+ }
+ }
+ // EOF
ToSendStuffBit(1);
ToSendStuffBit(1);
ToSendStuffBit(0);
}
}
+
+// Transmit the command (to the tag) that was placed in cmd[].
+static void TransmitTo15693Tag(const uint8_t *cmd, int len)
+{
+ FpgaSetupSsc(FPGA_MAJOR_MODE_HF_READER_TX);
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_TX);
+
+ LED_B_ON();
+ for(int c = 0; c < len; ) {
+ if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
+ AT91C_BASE_SSC->SSC_THR = ~cmd[c];
+ c++;
+ }
+ WDT_HIT();
+ }
+ LED_B_OFF();
+}
+
//-----------------------------------------------------------------------------
-// The CRC used by ISO 15693.
+// Transmit the command (to the reader) that was placed in cmd[].
//-----------------------------------------------------------------------------
-static uint16_t Crc(uint8_t *v, int n)
+static void TransmitTo15693Reader(const uint8_t *cmd, int len)
{
- uint32_t reg;
- int i, j;
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_SIMULATOR | FPGA_HF_SIMULATOR_MODULATE_424K);
- reg = 0xffff;
- for(i = 0; i < n; i++) {
- reg = reg ^ ((uint32_t)v[i]);
- for (j = 0; j < 8; j++) {
- if (reg & 0x0001) {
- reg = (reg >> 1) ^ 0x8408;
+ LED_C_ON();
+ for(int c = 0; c < len; ) {
+ if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
+ AT91C_BASE_SSC->SSC_THR = cmd[c];
+ c++;
+ }
+ WDT_HIT();
+ }
+ LED_C_OFF();
+}
+
+
+//=============================================================================
+// An ISO 15693 demodulator (one subcarrier only). Uses cross correlation to
+// identify the SOF, each bit, and EOF.
+// This function is called 8 times per bit (every 2 subcarrier cycles).
+// Subcarrier frequency fs is 424kHz, 1/fs = 2,36us,
+// i.e. function is called every 4,72us
+// LED handling:
+// LED C -> ON once we have received the SOF and are expecting the rest.
+// LED C -> OFF once we have received EOF or are unsynced
+//
+// Returns: true if we received a EOF
+// false if we are still waiting for some more
+//=============================================================================
+
+#define SUBCARRIER_DETECT_THRESHOLD 2
+#define SOF_CORRELATOR_LEN (1<<5)
+
+typedef struct Demod {
+ enum {
+ DEMOD_UNSYNCD,
+ DEMOD_AWAIT_SOF_1,
+ DEMOD_AWAIT_SOF_2,
+ DEMOD_RECEIVING_DATA,
+ DEMOD_AWAIT_EOF
+ } state;
+ int bitCount;
+ int posCount;
+ enum {
+ LOGIC0,
+ LOGIC1,
+ SOF_PART1,
+ SOF_PART2
+ } lastBit;
+ uint16_t shiftReg;
+ uint8_t *output;
+ int len;
+ int sum1, sum2;
+ uint8_t SOF_low;
+ uint8_t SOF_high;
+ uint8_t SOF_last;
+ int32_t SOF_corr;
+ int32_t SOF_corr_prev;
+ uint8_t SOF_correlator[SOF_CORRELATOR_LEN];
+} Demod_t;
+
+static RAMFUNC int Handle15693SamplesDemod(int8_t ci, int8_t cq, Demod_t *Demod)
+{
+ switch(Demod->state) {
+ case DEMOD_UNSYNCD:
+ // initialize SOF correlator. We are looking for 12 samples low and 12 samples high.
+ Demod->SOF_low = 0;
+ Demod->SOF_high = 12;
+ Demod->SOF_last = 23;
+ memset(Demod->SOF_correlator, 0x00, Demod->SOF_last + 1);
+ Demod->SOF_correlator[Demod->SOF_last] = AMPLITUDE(ci,cq);
+ Demod->SOF_corr = Demod->SOF_correlator[Demod->SOF_last];
+ Demod->SOF_corr_prev = Demod->SOF_corr;
+ // initialize Demodulator
+ Demod->posCount = 0;
+ Demod->bitCount = 0;
+ Demod->len = 0;
+ Demod->state = DEMOD_AWAIT_SOF_1;
+ break;
+
+ case DEMOD_AWAIT_SOF_1:
+ // calculate the correlation in real time. Look at differences only.
+ Demod->SOF_corr += Demod->SOF_correlator[Demod->SOF_low++];
+ Demod->SOF_corr -= 2*Demod->SOF_correlator[Demod->SOF_high++];
+ Demod->SOF_last++;
+ Demod->SOF_low &= (SOF_CORRELATOR_LEN-1);
+ Demod->SOF_high &= (SOF_CORRELATOR_LEN-1);
+ Demod->SOF_last &= (SOF_CORRELATOR_LEN-1);
+ Demod->SOF_correlator[Demod->SOF_last] = AMPLITUDE(ci,cq);
+ Demod->SOF_corr += Demod->SOF_correlator[Demod->SOF_last];
+
+ // if correlation increases for 10 consecutive samples, we are close to maximum correlation
+ if (Demod->SOF_corr > Demod->SOF_corr_prev + SUBCARRIER_DETECT_THRESHOLD) {
+ Demod->posCount++;
+ } else {
+ Demod->posCount = 0;
+ }
+
+ if (Demod->posCount == 10) { // correlation increased 10 times
+ Demod->state = DEMOD_AWAIT_SOF_2;
+ }
+
+ Demod->SOF_corr_prev = Demod->SOF_corr;
+
+ break;
+
+ case DEMOD_AWAIT_SOF_2:
+ // calculate the correlation in real time. Look at differences only.
+ Demod->SOF_corr += Demod->SOF_correlator[Demod->SOF_low++];
+ Demod->SOF_corr -= 2*Demod->SOF_correlator[Demod->SOF_high++];
+ Demod->SOF_last++;
+ Demod->SOF_low &= (SOF_CORRELATOR_LEN-1);
+ Demod->SOF_high &= (SOF_CORRELATOR_LEN-1);
+ Demod->SOF_last &= (SOF_CORRELATOR_LEN-1);
+ Demod->SOF_correlator[Demod->SOF_last] = AMPLITUDE(ci,cq);
+ Demod->SOF_corr += Demod->SOF_correlator[Demod->SOF_last];
+
+ if (Demod->SOF_corr >= Demod->SOF_corr_prev) { // we are looking for the maximum correlation
+ Demod->SOF_corr_prev = Demod->SOF_corr;
+ } else {
+ Demod->lastBit = SOF_PART1; // detected 1st part of SOF
+ Demod->sum1 = Demod->SOF_correlator[Demod->SOF_last];
+ Demod->sum2 = 0;
+ Demod->posCount = 2;
+ Demod->state = DEMOD_RECEIVING_DATA;
+ LED_C_ON();
+ }
+
+ break;
+
+ case DEMOD_RECEIVING_DATA:
+ if (Demod->posCount == 1) {
+ Demod->sum1 = 0;
+ Demod->sum2 = 0;
+ }
+
+ if (Demod->posCount <= 4) {
+ Demod->sum1 += AMPLITUDE(ci, cq);
+ } else {
+ Demod->sum2 += AMPLITUDE(ci, cq);
+ }
+
+ if (Demod->posCount == 8) {
+ int16_t corr_1 = (Demod->sum2 - Demod->sum1) / 4;
+ int16_t corr_0 = (Demod->sum1 - Demod->sum2) / 4;
+ int16_t corr_EOF = (Demod->sum1 + Demod->sum2) / 8;
+ if (corr_EOF > corr_0 && corr_EOF > corr_1) {
+ Demod->state = DEMOD_AWAIT_EOF;
+ } else if (corr_1 > corr_0) {
+ // logic 1
+ if (Demod->lastBit == SOF_PART1) { // still part of SOF
+ Demod->lastBit = SOF_PART2;
+ } else {
+ Demod->lastBit = LOGIC1;
+ Demod->shiftReg >>= 1;
+ Demod->shiftReg |= 0x80;
+ Demod->bitCount++;
+ if (Demod->bitCount == 8) {
+ Demod->output[Demod->len] = Demod->shiftReg;
+ Demod->len++;
+ Demod->bitCount = 0;
+ Demod->shiftReg = 0;
+ }
+ }
+ } else {
+ // logic 0
+ if (Demod->lastBit == SOF_PART1) { // incomplete SOF
+ Demod->state = DEMOD_UNSYNCD;
+ LED_C_OFF();
+ } else {
+ Demod->lastBit = LOGIC0;
+ Demod->shiftReg >>= 1;
+ Demod->bitCount++;
+ if (Demod->bitCount == 8) {
+ Demod->output[Demod->len] = Demod->shiftReg;
+ Demod->len++;
+ Demod->bitCount = 0;
+ Demod->shiftReg = 0;
+ }
+ }
+ }
+ Demod->posCount = 0;
+ }
+ Demod->posCount++;
+ break;
+
+ case DEMOD_AWAIT_EOF:
+ if (Demod->lastBit == LOGIC0) { // this was already part of EOF
+ LED_C_OFF();
+ return true;
} else {
- reg = (reg >> 1);
+ Demod->state = DEMOD_UNSYNCD;
+ LED_C_OFF();
}
+ break;
+
+ default:
+ Demod->state = DEMOD_UNSYNCD;
+ LED_C_OFF();
+ break;
+ }
+
+ return false;
+}
+
+
+static void DemodInit(Demod_t* Demod, uint8_t* data)
+{
+ Demod->output = data;
+ Demod->state = DEMOD_UNSYNCD;
+}
+
+
+/*
+ * Demodulate the samples we received from the tag, also log to tracebuffer
+ */
+static int GetIso15693AnswerFromTag(uint8_t* response, int timeout)
+{
+ int maxBehindBy = 0;
+ int lastRxCounter, samples = 0;
+ int8_t ci, cq;
+ bool gotFrame = false;
+
+ // Allocate memory from BigBuf for some buffers
+ // free all previous allocations first
+ BigBuf_free();
+
+ // The DMA buffer, used to stream samples from the FPGA
+ uint16_t* dmaBuf = (uint16_t*) BigBuf_malloc(ISO15693_DMA_BUFFER_SIZE * sizeof(uint16_t));
+
+ // the Demodulatur data structure
+ Demod_t* Demod = (Demod_t*) BigBuf_malloc(sizeof(Demod_t));
+
+ // Set up the demodulator for tag -> reader responses.
+ DemodInit(Demod, response);
+
+ // wait for last transfer to complete
+ while (!(AT91C_BASE_SSC->SSC_SR & AT91C_SSC_TXEMPTY));
+
+ // And put the FPGA in the appropriate mode
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR);
+
+ // Setup and start DMA.
+ FpgaSetupSsc(FPGA_MAJOR_MODE_HF_READER_RX_XCORR);
+ FpgaSetupSscDma((uint8_t*) dmaBuf, ISO15693_DMA_BUFFER_SIZE);
+
+ uint16_t *upTo = dmaBuf;
+ lastRxCounter = ISO15693_DMA_BUFFER_SIZE;
+
+ for(;;) {
+ int behindBy = (lastRxCounter - AT91C_BASE_PDC_SSC->PDC_RCR) & (ISO15693_DMA_BUFFER_SIZE-1);
+ if(behindBy > maxBehindBy) {
+ maxBehindBy = behindBy;
+ }
+
+ if (behindBy < 1) continue;
+
+ ci = (int8_t)(*upTo >> 8);
+ cq = (int8_t)(*upTo & 0xff);
+
+ upTo++;
+ lastRxCounter--;
+ if(upTo >= dmaBuf + ISO15693_DMA_BUFFER_SIZE) { // we have read all of the DMA buffer content.
+ upTo = dmaBuf; // start reading the circular buffer from the beginning
+ lastRxCounter += ISO15693_DMA_BUFFER_SIZE;
}
+ if (AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_ENDRX)) { // DMA Counter Register had reached 0, already rotated.
+ AT91C_BASE_PDC_SSC->PDC_RNPR = (uint32_t) dmaBuf; // refresh the DMA Next Buffer and
+ AT91C_BASE_PDC_SSC->PDC_RNCR = ISO15693_DMA_BUFFER_SIZE; // DMA Next Counter registers
+ }
+ samples++;
+
+ if (Handle15693SamplesDemod(ci, cq, Demod)) {
+ gotFrame = true;
+ break;
+ }
+
+ if(samples > timeout && Demod->state < DEMOD_RECEIVING_DATA) {
+ Demod->len = 0;
+ break;
+ }
+ }
+
+ FpgaDisableSscDma();
+
+ if (DEBUG) Dbprintf("max behindby = %d, samples = %d, gotFrame = %d, Demod.state = %d, Demod.len = %d, Demod.bitCount = %d, Demod.posCount = %d",
+ maxBehindBy, samples, gotFrame, Demod->state, Demod->len, Demod->bitCount, Demod->posCount);
+
+ if (tracing && Demod->len > 0) {
+ uint8_t parity[MAX_PARITY_SIZE];
+ LogTrace(Demod->output, Demod->len, 0, 0, parity, false);
}
- return ~reg;
+ return Demod->len;
}
-char *strcat(char *dest, const char *src)
+
+// Now the GetISO15693 message from sniffing command
+// TODO: fix it. This cannot work for several reasons:
+// 1. Carrier is switched on during sniffing?
+// 2. We most probable miss the next reader command when demodulating
+static int GetIso15693AnswerFromSniff(uint8_t *receivedResponse, int maxLen, int *samples, int *elapsed)
{
- size_t dest_len = strlen(dest);
- size_t i;
+ uint8_t *dest = BigBuf_get_addr();
+
+// NOW READ RESPONSE
+ LED_D_ON();
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR);
+ //spindelay(60); // greg - experiment to get rid of some of the 0 byte/failed reads
+ for(int c = 0; c < BIGBUF_SIZE; ) {
+ if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
+ uint16_t iq = AT91C_BASE_SSC->SSC_RHR;
+ // The samples are correlations against I and Q versions of the
+ // tone that the tag AM-modulates. We just want power,
+ // so abs(I) + abs(Q) is close to what we want.
+ int8_t i = (int8_t)(iq >> 8);
+ int8_t q = (int8_t)(iq & 0xff);
+ uint8_t r = AMPLITUDE(i, q);
+ dest[c++] = r;
+ }
+ }
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+ LED_D_OFF();
+
+ //////////////////////////////////////////
+ /////////// DEMODULATE ///////////////////
+ //////////////////////////////////////////
+
+ int i, j;
+ int max = 0, maxPos=0;
+
+ int skip = 2;
+
+ // First, correlate for SOF
+ for(i = 0; i < 38000; i++) {
+ int corr = 0;
+ for(j = 0; j < arraylen(FrameSOF); j += skip) {
+ corr += FrameSOF[j]*dest[i+(j/skip)];
+ }
+ if(corr > max) {
+ max = corr;
+ maxPos = i;
+ }
+ }
+
+ if (DEBUG) Dbprintf("SOF at %d, correlation %d", maxPos,max/(arraylen(FrameSOF)/skip));
- for (i = 0 ; src[i] != '\0' ; i++)
- dest[dest_len + i] = src[i];
- dest[dest_len + i] = '\0';
+ int k = 0; // this will be our return value
+
+ // greg - If correlation is less than 1 then there's little point in continuing
+ if ((max/(arraylen(FrameSOF)/skip)) >= 1) // THIS SHOULD BE 1
+ {
+
+ i = maxPos + arraylen(FrameSOF)/skip;
+
+ uint8_t outBuf[20];
+ memset(outBuf, 0, sizeof(outBuf));
+ uint8_t mask = 0x01;
+ for(;;) {
+ 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)];
+ }
+ for(j = 0; j < arraylen(FrameEOF); j += skip) {
+ 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 > 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;
+ outBuf[k] |= mask;
+ } else {
+ i += arraylen(Logic0)/skip;
+ }
+ mask <<= 1;
+ if(mask == 0) {
+ k++;
+ mask = 0x01;
+ }
+ if((i+(int)arraylen(FrameEOF)/skip) >= BIGBUF_SIZE) {
+ DbpString("ran off end!");
+ break;
+ }
+ }
+ if(mask != 0x01) {
+ DbpString("sniff: error, uneven octet! (discard extra bits!)");
+ /// DbpString(" mask=%02x", mask);
+ }
+ // uint8_t str1 [8];
+ // itoa(k,str1);
+ // strncat(str1," octets read",8);
+
+ // DbpString( str1); // DbpString("%d octets", k);
+
+ // for(i = 0; i < k; i+=3) {
+ // //DbpString("# %2d: %02x ", i, outBuf[i]);
+ // DbpIntegers(outBuf[i],outBuf[i+1],outBuf[i+2]);
+ // }
+
+ for(i = 0; i < k; i++) {
+ receivedResponse[i] = outBuf[i];
+ }
+ } // "end if correlation > 0" (max/(arraylen(FrameSOF)/skip))
+ return k; // return the number of bytes demodulated
- return dest;
+/// DbpString("CRC=%04x", Iso15693Crc(outBuf, k-2));
}
-////////////////////////////////////////// code to do 'itoa'
-/* reverse: reverse string s in place */
-void reverse(char s[])
+static void BuildIdentifyRequest(void);
+//-----------------------------------------------------------------------------
+// Start to read an ISO 15693 tag. We send an identify request, then wait
+// for the response. The response is not demodulated, just left in the buffer
+// so that it can be downloaded to a PC and processed there.
+//-----------------------------------------------------------------------------
+void AcquireRawAdcSamplesIso15693(void)
{
- int c, i, j;
+ LEDsoff();
+ LED_A_ON();
+
+ uint8_t *dest = BigBuf_get_addr();
- for (i = 0, j = strlen(s)-1; i<j; i++, j--) {
- c = s[i];
- s[i] = s[j];
- s[j] = c;
- }
+ FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
+ BuildIdentifyRequest();
+
+ SetAdcMuxFor(GPIO_MUXSEL_HIPKD);
+
+ // Give the tags time to energize
+ LED_D_ON();
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR);
+ SpinDelay(100);
+
+ // Now send the command
+ FpgaSetupSsc(FPGA_MAJOR_MODE_HF_READER_TX);
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_TX);
+
+ LED_B_ON();
+ for(int c = 0; c < ToSendMax; ) {
+ if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
+ AT91C_BASE_SSC->SSC_THR = ~ToSend[c];
+ c++;
+ }
+ WDT_HIT();
+ }
+ LED_B_OFF();
+
+ // wait for last transfer to complete
+ while (!(AT91C_BASE_SSC->SSC_SR & AT91C_SSC_TXEMPTY));
+
+ FpgaSetupSsc(FPGA_MAJOR_MODE_HF_READER_RX_XCORR);
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR);
+
+ for(int c = 0; c < 4000; ) {
+ if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
+ uint16_t iq = AT91C_BASE_SSC->SSC_RHR;
+ // The samples are correlations against I and Q versions of the
+ // tone that the tag AM-modulates. We just want power,
+ // so abs(I) + abs(Q) is close to what we want.
+ int8_t i = (int8_t)(iq >> 8);
+ int8_t q = (int8_t)(iq & 0xff);
+ uint8_t r = AMPLITUDE(i, q);
+ dest[c++] = r;
+ }
+ }
+
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+ LEDsoff();
}
-/* itoa: convert n to characters in s */
-void itoa(int n, char s[])
+
+// TODO: there is no trigger condition. The 14000 samples represent a time frame of 66ms.
+// It is unlikely that we get something meaningful.
+// TODO: Currently we only record tag answers. Add tracing of reader commands.
+// TODO: would we get something at all? The carrier is switched on...
+void RecordRawAdcSamplesIso15693(void)
{
- int i, sign;
-
- if ((sign = n) < 0) /* record sign */
- n = -n; /* make n positive */
- i = 0;
- do { /* generate digits in reverse order */
- s[i++] = n % 10 + '0'; /* get next digit */
- } while ((n /= 10) > 0); /* delete it */
- if (sign < 0)
- s[i++] = '-';
- s[i] = '\0';
- reverse(s);
+ LEDsoff();
+ LED_A_ON();
+
+ uint8_t *dest = BigBuf_get_addr();
+
+ FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
+ // Setup SSC
+ FpgaSetupSsc(FPGA_MAJOR_MODE_HF_READER_RX_XCORR);
+
+ // Start from off (no field generated)
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+ SpinDelay(200);
+
+ SetAdcMuxFor(GPIO_MUXSEL_HIPKD);
+
+ SpinDelay(100);
+
+ LED_D_ON();
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR);
+
+ for(int c = 0; c < 14000;) {
+ if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
+ uint16_t iq = AT91C_BASE_SSC->SSC_RHR;
+ // The samples are correlations against I and Q versions of the
+ // tone that the tag AM-modulates. We just want power,
+ // so abs(I) + abs(Q) is close to what we want.
+ int8_t i = (int8_t)(iq >> 8);
+ int8_t q = (int8_t)(iq & 0xff);
+ uint8_t r = AMPLITUDE(i, q);
+ dest[c++] = r;
+ }
+ }
+
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+ LED_D_OFF();
+ Dbprintf("finished recording");
+ LED_A_OFF();
}
-//////////////////////////////////////// END 'itoa' CODE
-//-----------------------------------------------------------------------------
+// Initialize the proxmark as iso15k reader
+// (this might produces glitches that confuse some tags
+static void Iso15693InitReader() {
+ FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
+ // Setup SSC
+ // FpgaSetupSsc();
+
+ // Start from off (no field generated)
+ LED_D_OFF();
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+ SpinDelay(10);
+
+ SetAdcMuxFor(GPIO_MUXSEL_HIPKD);
+ FpgaSetupSsc(FPGA_MAJOR_MODE_HF_READER_RX_XCORR);
+
+ // Give the tags time to energize
+ LED_D_ON();
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR);
+ SpinDelay(250);
+}
+
+///////////////////////////////////////////////////////////////////////
+// ISO 15693 Part 3 - Air Interface
+// This section basically contains transmission and receiving of bits
+///////////////////////////////////////////////////////////////////////
+
// Encode (into the ToSend buffers) an identify request, which is the first
// thing that you must send to a tag to get a response.
-//-----------------------------------------------------------------------------
static void BuildIdentifyRequest(void)
{
uint8_t cmd[5];
CodeIso15693AsReader(cmd, sizeof(cmd));
}
-static void __attribute__((unused)) BuildSysInfoRequest(uint8_t *uid)
+// uid is in transmission order (which is reverse of display order)
+static void BuildReadBlockRequest(uint8_t *uid, uint8_t blockNumber )
{
- uint8_t cmd[12];
+ uint8_t cmd[13];
uint16_t crc;
// If we set the Option_Flag in this request, the VICC will respond with the secuirty status of the block
// followed by teh block data
// one sub-carrier, inventory, 1 slot, fast rate
- cmd[0] = (1 << 5) | (1 << 1); // no SELECT bit
- // System Information command code
- cmd[1] = 0x2B;
+ cmd[0] = (1 << 6)| (1 << 5) | (1 << 1); // no SELECT bit, ADDR bit, OPTION bit
+ // READ BLOCK command code
+ cmd[1] = 0x20;
// UID may be optionally specified here
// 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; // always e0 (not exactly unique)
+ cmd[2] = uid[0];
+ cmd[3] = uid[1];
+ cmd[4] = uid[2];
+ cmd[5] = uid[3];
+ cmd[6] = uid[4];
+ cmd[7] = uid[5];
+ cmd[8] = uid[6];
+ cmd[9] = uid[7]; // 0xe0; // always e0 (not exactly unique)
+ // Block number to read
+ cmd[10] = blockNumber;//0x00;
//Now the CRC
- crc = Crc(cmd, 10); // the crc needs to be calculated over 2 bytes
- cmd[10] = crc & 0xff;
- cmd[11] = crc >> 8;
+ crc = Crc(cmd, 11); // the crc needs to be calculated over 12 bytes
+ cmd[11] = crc & 0xff;
+ cmd[12] = crc >> 8;
CodeIso15693AsReader(cmd, sizeof(cmd));
}
-static void BuildSelectRequest( uint8_t uid[])
-{
-// uid[6]=0x31; // this is getting ignored - the uid array is not happening...
+// Now the VICC>VCD responses when we are simulating a tag
+static void BuildInventoryResponse( uint8_t *uid)
+{
uint8_t cmd[12];
uint16_t crc;
// one sub-carrier, inventory, 1 slot, fast rate
- //cmd[0] = (1 << 2) | (1 << 5) | (1 << 1); // INVENTROY FLAGS
- cmd[0] = (1 << 4) | (1 << 5) | (1 << 1); // Select and addressed FLAGS
- // SELECT command code
- cmd[1] = 0x25;
+ // AFI is at bit 5 (1<<4) when doing an INVENTORY
+ //(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] = uid[0];//0x32;
-// cmd[3]= uid[1];//0x4b;
-// cmd[4] = uid[2];//0x03;
-// cmd[5] = uid[3];//0x01;
-// cmd[6] = uid[4];//0x00;
-// cmd[7] = uid[5];//0x10;
-// cmd[8] = uid[6];//0x05;
- cmd[2] = 0x32;//
- cmd[3] = 0x4b;
- cmd[4] = 0x03;
- cmd[5] = 0x01;
- cmd[6] = 0x00;
- cmd[7] = 0x10;
- cmd[8] = 0x05; // infineon?
-
- cmd[9]= 0xe0; // always e0 (not exactly unique)
-
-// DbpIntegers(cmd[8],cmd[7],cmd[6]);
- // Now the CRC
- crc = Crc(cmd, 10); // the crc needs to be calculated over 10 bytes
+ 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;
cmd[11] = crc >> 8;
CodeIso15693AsReader(cmd, sizeof(cmd));
}
-static void __attribute__((unused)) BuildReadBlockRequest(uint8_t *uid, uint8_t blockNumber )
+// Universal Method for sending to and recv bytes from a tag
+// init ... should we initialize the reader?
+// speed ... 0 low speed, 1 hi speed
+// **recv will return you a pointer to the received data
+// If you do not need the answer use NULL for *recv[]
+// return: lenght of received data
+int SendDataTag(uint8_t *send, int sendlen, bool init, int speed, uint8_t **recv) {
+
+ LED_A_ON();
+ LED_B_OFF();
+ LED_C_OFF();
+
+ if (init) Iso15693InitReader();
+
+ int answerLen=0;
+ uint8_t *answer = BigBuf_get_addr() + 4000;
+ if (recv != NULL) memset(answer, 0, 100);
+
+ if (!speed) {
+ // low speed (1 out of 256)
+ CodeIso15693AsReader256(send, sendlen);
+ } else {
+ // high speed (1 out of 4)
+ CodeIso15693AsReader(send, sendlen);
+ }
+
+ TransmitTo15693Tag(ToSend,ToSendMax);
+ // Now wait for a response
+ if (recv!=NULL) {
+ answerLen = GetIso15693AnswerFromTag(answer, 100);
+ *recv=answer;
+ }
+
+ LED_A_OFF();
+
+ return answerLen;
+}
+
+
+// --------------------------------------------------------------------
+// Debug Functions
+// --------------------------------------------------------------------
+
+// Decodes a message from a tag and displays its metadata and content
+#define DBD15STATLEN 48
+void DbdecodeIso15693Answer(int len, uint8_t *d) {
+ char status[DBD15STATLEN+1]={0};
+ uint16_t crc;
+
+ if (len>3) {
+ if (d[0]&(1<<3))
+ strncat(status,"ProtExt ",DBD15STATLEN);
+ if (d[0]&1) {
+ // error
+ strncat(status,"Error ",DBD15STATLEN);
+ switch (d[1]) {
+ case 0x01:
+ strncat(status,"01:notSupp",DBD15STATLEN);
+ break;
+ case 0x02:
+ strncat(status,"02:notRecog",DBD15STATLEN);
+ break;
+ case 0x03:
+ strncat(status,"03:optNotSupp",DBD15STATLEN);
+ break;
+ case 0x0f:
+ strncat(status,"0f:noInfo",DBD15STATLEN);
+ break;
+ case 0x10:
+ strncat(status,"10:dontExist",DBD15STATLEN);
+ break;
+ case 0x11:
+ strncat(status,"11:lockAgain",DBD15STATLEN);
+ break;
+ case 0x12:
+ strncat(status,"12:locked",DBD15STATLEN);
+ break;
+ case 0x13:
+ strncat(status,"13:progErr",DBD15STATLEN);
+ break;
+ case 0x14:
+ strncat(status,"14:lockErr",DBD15STATLEN);
+ break;
+ default:
+ strncat(status,"unknownErr",DBD15STATLEN);
+ }
+ strncat(status," ",DBD15STATLEN);
+ } else {
+ strncat(status,"NoErr ",DBD15STATLEN);
+ }
+
+ crc=Crc(d,len-2);
+ if ( (( crc & 0xff ) == d[len-2]) && (( crc >> 8 ) == d[len-1]) )
+ strncat(status,"CrcOK",DBD15STATLEN);
+ else
+ strncat(status,"CrcFail!",DBD15STATLEN);
+
+ Dbprintf("%s",status);
+ }
+}
+
+
+
+///////////////////////////////////////////////////////////////////////
+// Functions called via USB/Client
+///////////////////////////////////////////////////////////////////////
+
+void SetDebugIso15693(uint32_t debug) {
+ DEBUG=debug;
+ Dbprintf("Iso15693 Debug is now %s",DEBUG?"on":"off");
+ return;
+}
+
+//-----------------------------------------------------------------------------
+// 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)
{
- uint8_t cmd[13];
+ LEDsoff();
+ LED_A_ON();
+
+ int answerLen1 = 0;
+ uint8_t TagUID[8] = {0x00};
+
+ FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
+
+ uint8_t *answer1 = BigBuf_get_addr() + 4000;
+ memset(answer1, 0x00, 200);
+
+ SetAdcMuxFor(GPIO_MUXSEL_HIPKD);
+ // Setup SSC
+ FpgaSetupSsc(FPGA_MAJOR_MODE_HF_READER_RX_XCORR);
+
+ // Start from off (no field generated)
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+ SpinDelay(200);
+
+ // Give the tags time to energize
+ LED_D_ON();
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR);
+ SpinDelay(200);
+
+ // FIRST WE RUN AN INVENTORY TO GET THE TAG UID
+ // THIS MEANS WE CAN PRE-BUILD REQUESTS TO SAVE CPU TIME
+
+ // Now send the IDENTIFY command
+ BuildIdentifyRequest();
+
+ TransmitTo15693Tag(ToSend,ToSendMax);
+
+ // Now wait for a response
+ answerLen1 = GetIso15693AnswerFromTag(answer1, 100) ;
+
+ if (answerLen1 >=12) // we should do a better check than this
+ {
+ TagUID[0] = answer1[2];
+ TagUID[1] = answer1[3];
+ TagUID[2] = answer1[4];
+ TagUID[3] = answer1[5];
+ TagUID[4] = answer1[6];
+ TagUID[5] = answer1[7];
+ TagUID[6] = answer1[8]; // IC Manufacturer code
+ TagUID[7] = answer1[9]; // always E0
+
+ }
+
+ Dbprintf("%d octets read from IDENTIFY request:", answerLen1);
+ DbdecodeIso15693Answer(answerLen1,answer1);
+ Dbhexdump(answerLen1,answer1,true);
+
+ // UID is reverse
+ if (answerLen1 >= 12)
+ 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 XXX request:", answerLen3);
+ // DbdecodeIso15693Answer(answerLen3,answer3);
+ // Dbhexdump(answerLen3,answer3,true);
+
+ // read all pages
+ if (answerLen1 >= 12 && DEBUG) {
+ uint8_t *answer2 = BigBuf_get_addr() + 4100;
+ int i=0;
+ while (i<32) { // sanity check, assume max 32 pages
+ BuildReadBlockRequest(TagUID,i);
+ TransmitTo15693Tag(ToSend,ToSendMax);
+ int answerLen2 = GetIso15693AnswerFromTag(answer2, 100);
+ if (answerLen2>0) {
+ Dbprintf("READ SINGLE BLOCK %d returned %d octets:",i,answerLen2);
+ DbdecodeIso15693Answer(answerLen2,answer2);
+ Dbhexdump(answerLen2,answer2,true);
+ if ( *((uint32_t*) answer2) == 0x07160101 ) break; // exit on NoPageErr
+ }
+ i++;
+ }
+ }
+
+ // for the time being, switch field off to protect rdv4.0
+ // note: this prevents using hf 15 cmd with s option - which isn't implemented yet anyway
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+ LED_D_OFF();
+
+ LED_A_OFF();
+}
+
+// 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, uint8_t *uid)
+{
+ LEDsoff();
+ LED_A_ON();
+
+ int answerLen1 = 0;
+ int samples = 0;
+ int elapsed = 0;
+
+ FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
+
+ uint8_t *buf = BigBuf_get_addr() + 4000;
+ memset(buf, 0x00, 100);
+
+ SetAdcMuxFor(GPIO_MUXSEL_HIPKD);
+ FpgaSetupSsc(FPGA_MAJOR_MODE_HF_READER_RX_XCORR);
+
+ // Start from off (no field generated)
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+ SpinDelay(200);
+
+ // 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
+ // 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);
+ }
+
+ Dbprintf("%d octets read from reader command: %x %x %x %x %x %x %x %x %x", answerLen1,
+ 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]);
+
+ LEDsoff();
+}
+
+
+// Since there is no standardized way of reading the AFI out of a tag, we will brute force it
+// (some manufactures offer a way to read the AFI, though)
+void BruteforceIso15693Afi(uint32_t speed)
+{
+ LEDsoff();
+ LED_A_ON();
+
+ uint8_t data[20];
+ uint8_t *recv=data;
+ int datalen=0, recvlen=0;
+
+ Iso15693InitReader();
+
+ // first without AFI
+ // Tags should respond wihtout AFI and with AFI=0 even when AFI is active
+
+ data[0]=ISO15_REQ_SUBCARRIER_SINGLE | ISO15_REQ_DATARATE_HIGH |
+ ISO15_REQ_INVENTORY | ISO15_REQINV_SLOT1;
+ data[1]=ISO15_CMD_INVENTORY;
+ data[2]=0; // mask length
+ datalen=AddCrc(data,3);
+ recvlen=SendDataTag(data, datalen, false, speed, &recv);
+ WDT_HIT();
+ if (recvlen>=12) {
+ Dbprintf("NoAFI UID=%s",sprintUID(NULL,&recv[2]));
+ }
+
+ // now with AFI
+
+ data[0]=ISO15_REQ_SUBCARRIER_SINGLE | ISO15_REQ_DATARATE_HIGH |
+ ISO15_REQ_INVENTORY | ISO15_REQINV_AFI | ISO15_REQINV_SLOT1;
+ data[1]=ISO15_CMD_INVENTORY;
+ data[2]=0; // AFI
+ data[3]=0; // mask length
+
+ for (int i=0;i<256;i++) {
+ data[2]=i & 0xFF;
+ datalen=AddCrc(data,4);
+ recvlen=SendDataTag(data, datalen, false, speed, &recv);
+ WDT_HIT();
+ if (recvlen>=12) {
+ Dbprintf("AFI=%i UID=%s",i,sprintUID(NULL,&recv[2]));
+ }
+ }
+ Dbprintf("AFI Bruteforcing done.");
+
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+ LEDsoff();
+}
+
+// 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[]) {
+
+ int recvlen=0;
+ uint8_t *recvbuf = BigBuf_get_addr();
+
+ LED_A_ON();
+
+ if (DEBUG) {
+ Dbprintf("SEND");
+ Dbhexdump(datalen,data,true);
+ }
+
+ recvlen = SendDataTag(data, datalen, true, speed, (recv?&recvbuf:NULL));
+
+ if (recv) {
+ cmd_send(CMD_ACK, recvlen>48?48:recvlen, 0, 0, recvbuf, 48);
+
+ if (DEBUG) {
+ Dbprintf("RECV");
+ DbdecodeIso15693Answer(recvlen,recvbuf);
+ Dbhexdump(recvlen,recvbuf,true);
+ }
+ }
+
+ // for the time being, switch field off to protect rdv4.0
+ // note: this prevents using hf 15 cmd with s option - which isn't implemented yet anyway
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+ LED_D_OFF();
+
+ LED_A_OFF();
+}
+
+
+
+
+// --------------------------------------------------------------------
+// -- Misc & deprecated functions
+// --------------------------------------------------------------------
+
+/*
+
+// do not use; has a fix UID
+static void __attribute__((unused)) BuildSysInfoRequest(uint8_t *uid)
+{
+ uint8_t cmd[12];
uint16_t crc;
// If we set the Option_Flag in this request, the VICC will respond with the secuirty status of the block
// followed by teh block data
// one sub-carrier, inventory, 1 slot, fast rate
- cmd[0] = (1 << 6)| (1 << 5) | (1 << 1); // no SELECT bit
- // READ BLOCK command code
- cmd[1] = 0x20;
+ cmd[0] = (1 << 5) | (1 << 1); // no SELECT bit
+ // System Information command code
+ cmd[1] = 0x2B;
// UID may be optionally specified here
// 64-bit UID
cmd[2] = 0x32;
cmd[7] = 0x10;
cmd[8] = 0x05;
cmd[9]= 0xe0; // always e0 (not exactly unique)
- // Block number to read
- cmd[10] = blockNumber;//0x00;
//Now the CRC
- crc = Crc(cmd, 11); // the crc needs to be calculated over 2 bytes
- cmd[11] = crc & 0xff;
- cmd[12] = crc >> 8;
+ crc = Crc(cmd, 10); // the crc needs to be calculated over 2 bytes
+ cmd[10] = crc & 0xff;
+ cmd[11] = crc >> 8;
CodeIso15693AsReader(cmd, sizeof(cmd));
}
+
+// do not use; has a fix UID
static void __attribute__((unused)) BuildReadMultiBlockRequest(uint8_t *uid)
{
uint8_t cmd[14];
CodeIso15693AsReader(cmd, sizeof(cmd));
}
+// do not use; has a fix UID
static void __attribute__((unused)) BuildArbitraryRequest(uint8_t *uid,uint8_t CmdCode)
{
uint8_t cmd[14];
CodeIso15693AsReader(cmd, sizeof(cmd));
}
+// do not use; has a fix UID
static void __attribute__((unused)) BuildArbitraryCustomRequest(uint8_t uid[], uint8_t CmdCode)
{
uint8_t cmd[14];
CodeIso15693AsReader(cmd, sizeof(cmd));
}
-/////////////////////////////////////////////////////////////////////////
-// Now the VICC>VCD responses when we are simulating a tag
-////////////////////////////////////////////////////////////////////
-
- static void BuildInventoryResponse(void)
-{
- 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;
- // 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;
- //Now the CRC
- crc = Crc(cmd, 10);
- cmd[10] = crc & 0xff;
- cmd[11] = crc >> 8;
-
- CodeIso15693AsReader(cmd, sizeof(cmd));
-}
-
-//-----------------------------------------------------------------------------
-// Transmit the command (to the tag) that was placed in ToSend[].
-//-----------------------------------------------------------------------------
-static void TransmitTo15693Tag(const uint8_t *cmd, int len, int *samples, int *wait)
-{
- int c;
-
-// FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD);
- FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_TX);
- if(*wait < 10) { *wait = 10; }
-
-// for(c = 0; c < *wait;) {
-// if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
-// AT91C_BASE_SSC->SSC_THR = 0x00; // For exact timing!
-// c++;
-// }
-// if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
-// volatile uint32_t r = AT91C_BASE_SSC->SSC_RHR;
-// (void)r;
-// }
-// WDT_HIT();
-// }
-
- c = 0;
- for(;;) {
- if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
- AT91C_BASE_SSC->SSC_THR = cmd[c];
- c++;
- if(c >= len) {
- break;
- }
- }
- if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
- volatile uint32_t r = AT91C_BASE_SSC->SSC_RHR;
- (void)r;
- }
- WDT_HIT();
- }
- *samples = (c + *wait) << 3;
-}
-
-//-----------------------------------------------------------------------------
-// Transmit the command (to the reader) that was placed in ToSend[].
-//-----------------------------------------------------------------------------
-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
- if(*wait < 10) { *wait = 10; }
-
- c = 0;
- for(;;) {
- if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
- AT91C_BASE_SSC->SSC_THR = cmd[c];
- c++;
- if(c >= len) {
- break;
- }
- }
- if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
- volatile uint32_t r = AT91C_BASE_SSC->SSC_RHR;
- (void)r;
- }
- WDT_HIT();
- }
- *samples = (c + *wait) << 3;
-}
-
-static int GetIso15693AnswerFromTag(uint8_t *receivedResponse, int maxLen, int *samples, int *elapsed)
-{
- int c = 0;
- uint8_t *dest = (uint8_t *)BigBuf;
- 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;
- 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;
-
- // 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;
- }
-
- dest[c++] = (uint8_t)r;
-
- if(c >= 2000) {
- break;
- }
- } else {
- prev = b;
- }
-
- getNext = !getNext;
- }
- }
-//////////////////////////////////////////
-/////////// DEMODULATE ///////////////////
-//////////////////////////////////////////
- int i, j;
- int max = 0, maxPos=0;
- int skip = 4;
+*/
-// if(GraphTraceLen < 1000) return; // THIS CHECKS FOR A BUFFER TO SMALL
- // First, correlate for SOF
- for(i = 0; i < 100; i++) {
- int corr = 0;
- for(j = 0; j < arraylen(FrameSOF); j += skip) {
- corr += FrameSOF[j]*dest[i+(j/skip)];
- }
- if(corr > max) {
- max = corr;
- maxPos = i;
- }
- }
-// DbpString("SOF at %d, correlation %d", maxPos,max/(arraylen(FrameSOF)/skip));
-
- int k = 0; // this will be our return value
-
- // greg - If correlation is less than 1 then there's little point in continuing
- if ((max/(arraylen(FrameSOF)/skip)) >= 1)
- {
-
- i = maxPos + arraylen(FrameSOF)/skip;
-
- uint8_t outBuf[20];
- memset(outBuf, 0, sizeof(outBuf));
- uint8_t mask = 0x01;
- for(;;) {
- int corr0 = 0, corr1 = 0, corrEOF = 0;
- for(j = 0; j < arraylen(Logic0); j += skip) {
- corr0 += Logic0[j]*dest[i+(j/skip)];
- }
- for(j = 0; j < arraylen(Logic1); j += skip) {
- corr1 += Logic1[j]*dest[i+(j/skip)];
- }
- for(j = 0; j < arraylen(FrameEOF); j += skip) {
- corrEOF += FrameEOF[j]*dest[i+(j/skip)];
- }
- // Even things out by the length of the target waveform.
- corr0 *= 4;
- corr1 *= 4;
-
- if(corrEOF > corr1 && corrEOF > corr0) {
-// DbpString("EOF at %d", i);
- break;
- } else if(corr1 > corr0) {
- i += arraylen(Logic1)/skip;
- outBuf[k] |= mask;
- } else {
- i += arraylen(Logic0)/skip;
- }
- mask <<= 1;
- if(mask == 0) {
- k++;
- mask = 0x01;
- }
- if((i+(int)arraylen(FrameEOF)) >= 2000) {
- DbpString("ran off end!");
- break;
- }
- }
- if(mask != 0x01) {
- DbpString("error, uneven octet! (discard extra bits!)");
-/// DbpString(" mask=%02x", mask);
- }
-// uint8_t str1 [8];
-// itoa(k,str1);
-// strcat(str1," octets read");
-
-// DbpString( str1); // DbpString("%d octets", k);
-
-// for(i = 0; i < k; i+=3) {
-// //DbpString("# %2d: %02x ", i, outBuf[i]);
-// DbpIntegers(outBuf[i],outBuf[i+1],outBuf[i+2]);
-// }
-
- for(i = 0; i < k; i++) {
- receivedResponse[i] = outBuf[i];
- }
- } // "end if correlation > 0" (max/(arraylen(FrameSOF)/skip))
- return k; // return the number of bytes demodulated
-
-/// DbpString("CRC=%04x", Iso15693Crc(outBuf, k-2));
-
-}
-
-// Now the GetISO15693 message from sniffing command
-static int GetIso15693AnswerFromSniff(uint8_t *receivedResponse, int maxLen, int *samples, int *elapsed)
-{
- int c = 0;
- uint8_t *dest = (uint8_t *)BigBuf;
- 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;
- 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;
-
- // 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;
- }
-
- dest[c++] = (uint8_t)r;
-
- if(c >= 20000) {
- break;
- }
- } else {
- prev = b;
- }
-
- getNext = !getNext;
- }
- }
-
-//////////////////////////////////////////
-/////////// DEMODULATE ///////////////////
-//////////////////////////////////////////
-
- int i, j;
- int max = 0, maxPos=0;
-
- int skip = 4;
-
-// if(GraphTraceLen < 1000) return; // THIS CHECKS FOR A BUFFER TO SMALL
-
- // First, correlate for SOF
- for(i = 0; i < 19000; i++) {
- int corr = 0;
- for(j = 0; j < arraylen(FrameSOF); j += skip) {
- corr += FrameSOF[j]*dest[i+(j/skip)];
- }
- if(corr > max) {
- max = corr;
- maxPos = i;
- }
- }
-// DbpString("SOF at %d, correlation %d", maxPos,max/(arraylen(FrameSOF)/skip));
-
- int k = 0; // this will be our return value
-
- // greg - If correlation is less than 1 then there's little point in continuing
- if ((max/(arraylen(FrameSOF)/skip)) >= 1) // THIS SHOULD BE 1
- {
-
- i = maxPos + arraylen(FrameSOF)/skip;
-
- uint8_t outBuf[20];
- memset(outBuf, 0, sizeof(outBuf));
- uint8_t mask = 0x01;
- for(;;) {
- int corr0 = 0, corr1 = 0, corrEOF = 0;
- for(j = 0; j < arraylen(Logic0); j += skip) {
- corr0 += Logic0[j]*dest[i+(j/skip)];
- }
- for(j = 0; j < arraylen(Logic1); j += skip) {
- corr1 += Logic1[j]*dest[i+(j/skip)];
- }
- for(j = 0; j < arraylen(FrameEOF); j += skip) {
- corrEOF += FrameEOF[j]*dest[i+(j/skip)];
- }
- // Even things out by the length of the target waveform.
- corr0 *= 4;
- corr1 *= 4;
-
- if(corrEOF > corr1 && corrEOF > corr0) {
-// DbpString("EOF at %d", i);
- break;
- } else if(corr1 > corr0) {
- i += arraylen(Logic1)/skip;
- outBuf[k] |= mask;
- } else {
- i += arraylen(Logic0)/skip;
- }
- mask <<= 1;
- if(mask == 0) {
- k++;
- mask = 0x01;
- }
- if((i+(int)arraylen(FrameEOF)) >= 2000) {
- DbpString("ran off end!");
- break;
- }
- }
- if(mask != 0x01) {
- DbpString("error, uneven octet! (discard extra bits!)");
-/// DbpString(" mask=%02x", mask);
- }
-// uint8_t str1 [8];
-// itoa(k,str1);
-// strcat(str1," octets read");
-
-// DbpString( str1); // DbpString("%d octets", k);
-
-// for(i = 0; i < k; i+=3) {
-// //DbpString("# %2d: %02x ", i, outBuf[i]);
-// DbpIntegers(outBuf[i],outBuf[i+1],outBuf[i+2]);
-// }
-
- for(i = 0; i < k; i++) {
- receivedResponse[i] = outBuf[i];
- }
- } // "end if correlation > 0" (max/(arraylen(FrameSOF)/skip))
- return k; // return the number of bytes demodulated
-
-/// DbpString("CRC=%04x", Iso15693Crc(outBuf, k-2));
-}
-
-//-----------------------------------------------------------------------------
-// Start to read an ISO 15693 tag. We send an identify request, then wait
-// for the response. The response is not demodulated, just left in the buffer
-// so that it can be downloaded to a PC and processed there.
-//-----------------------------------------------------------------------------
-void AcquireRawAdcSamplesIso15693(void)
-{
- int c = 0;
- uint8_t *dest = (uint8_t *)BigBuf;
- int getNext = 0;
-
- int8_t prev = 0;
-
- BuildIdentifyRequest();
-
- SetAdcMuxFor(GPIO_MUXSEL_HIPKD);
-
- // Give the tags time to energize
- FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR);
- SpinDelay(100);
-
- // Now send the command
- FpgaSetupSsc();
- FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_TX);
-
- c = 0;
- for(;;) {
- if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
- AT91C_BASE_SSC->SSC_THR = ToSend[c];
- c++;
- if(c == ToSendMax+3) {
- 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;
- 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;
-
- // 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;
- }
-
- dest[c++] = (uint8_t)r;
-
- if(c >= 2000) {
- break;
- }
- } else {
- prev = b;
- }
-
- getNext = !getNext;
- }
- }
-}
-
-//-----------------------------------------------------------------------------
-// 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)
-{
- LED_A_ON();
- LED_B_ON();
- 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;
-
- // Blank arrays
- memset(BigBuf + 3660, 0, 300);
-
- // Setup SSC
- FpgaSetupSsc();
-
- // Start from off (no field generated)
- FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
- SpinDelay(200);
-
- SetAdcMuxFor(GPIO_MUXSEL_HIPKD);
- FpgaSetupSsc();
-
- // Give the tags time to energize
- FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR);
- SpinDelay(200);
-
- LED_A_ON();
- LED_B_OFF();
- 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[7]; // 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
- // 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];
- TagUID[3] = answer1[5];
- TagUID[4] = answer1[6];
- TagUID[5] = answer1[7];
- TagUID[6] = answer1[8]; // IC Manufacturer code
-
- // Now send the SELECT command
- 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: %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]);
-
- Dbprintf("%d octets read from SELECT request: %x %x %x %x %x %x %x %x %x", answerLen2,
- answer2[0], answer2[1], answer2[2],
- answer2[3], answer2[4], answer2[5],
- answer2[6], answer2[7], answer2[8]);
-
- Dbprintf("%d octets read from XXX request: %x %x %x %x %x %x %x %x %x", answerLen3,
- answer3[0], answer3[1], answer3[2],
- answer3[3], answer3[4], answer3[5],
- answer3[6], answer3[7], answer3[8]);
-
-
-// str2[0]=0;
-// for(i = 0; i < responseLen3; i++) {
-// itoa(str1,receivedAnswer3[i]);
-// strcat(str2,str1);
-// }
-// DbpString(str2);
-
- LED_A_OFF();
- LED_B_OFF();
- LED_C_OFF();
- LED_D_OFF();
-}
-
-//-----------------------------------------------------------------------------
-// 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)
-{
- 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);
-
- // Setup SSC
- FpgaSetupSsc();
-
- // Start from off (no field generated)
- FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
- SpinDelay(200);
-
- SetAdcMuxFor(GPIO_MUXSEL_HIPKD);
- FpgaSetupSsc();
-
- // Give the tags time to energize
-// FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR); // NO GOOD FOR SIM TAG!!!!
- SpinDelay(200);
-
- LED_A_OFF();
- LED_B_OFF();
- LED_C_ON();
- LED_D_OFF();
-
- int samples = 0;
- int tsamples = 0;
- int wait = 0;
- int elapsed = 0;
-
- answerLen1 = GetIso15693AnswerFromSniff(answer1, 100, &samples, &elapsed) ;
-
- if (answerLen1 >=1) // we should do a better check than this
- {
- // Build a suitable reponse to the reader INVENTORY cocmmand
- BuildInventoryResponse();
- 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]);
-
- LED_A_OFF();
- LED_B_OFF();
- LED_C_OFF();
- LED_D_OFF();
-}
projects / proxmark3-svn / blobdiff