+
+ }
+ DbpString("Stopped");
+ if (ledcontrol) LED_A_OFF();
+}
+
+uint32_t bytebits_to_byte(uint8_t* src, int numbits)
+{
+ uint32_t num = 0;
+ for(int i = 0 ; i < numbits ; i++)
+ {
+ num = (num << 1) | (*src);
+ src++;
+ }
+ return num;
+}
+
+
+void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol)
+{
+ uint8_t *dest = (uint8_t *)BigBuf;
+
+ size_t size=0, idx=0;
+ uint32_t code=0, code2=0;
+
+ // Configure to go in 125Khz listen mode
+ LFSetupFPGAForADC(95, true);
+
+ while(!BUTTON_PRESS()) {
+
+
+ WDT_HIT();
+ if (ledcontrol) LED_A_ON();
+
+ DoAcquisition125k_internal(-1,true);
+ size = sizeof(BigBuf);
+
+ // FSK demodulator
+ size = fsk_demod(dest, size);
+
+ // we now have a set of cycle counts, loop over previous results and aggregate data into bit patterns
+ // 1->0 : fc/8 in sets of 7
+ // 0->1 : fc/10 in sets of 6
+ size = aggregate_bits(dest, size, 7,6,13);
+
+ WDT_HIT();
+
+ //Handle the data
+ uint8_t mask[] = {0,0,0,0,0,0,0,0,0,1};
+ for( idx=0; idx < size - 64; idx++) {
+
+ if ( memcmp(dest + idx, mask, sizeof(mask)) ) continue;
+
+ Dbprintf("%d%d%d%d%d%d%d%d",dest[idx], dest[idx+1], dest[idx+2],dest[idx+3],dest[idx+4],dest[idx+5],dest[idx+6],dest[idx+7]);
+ Dbprintf("%d%d%d%d%d%d%d%d",dest[idx+8], dest[idx+9], dest[idx+10],dest[idx+11],dest[idx+12],dest[idx+13],dest[idx+14],dest[idx+15]);
+ Dbprintf("%d%d%d%d%d%d%d%d",dest[idx+16],dest[idx+17],dest[idx+18],dest[idx+19],dest[idx+20],dest[idx+21],dest[idx+22],dest[idx+23]);
+ Dbprintf("%d%d%d%d%d%d%d%d",dest[idx+24],dest[idx+25],dest[idx+26],dest[idx+27],dest[idx+28],dest[idx+29],dest[idx+30],dest[idx+31]);
+ Dbprintf("%d%d%d%d%d%d%d%d",dest[idx+32],dest[idx+33],dest[idx+34],dest[idx+35],dest[idx+36],dest[idx+37],dest[idx+38],dest[idx+39]);
+ Dbprintf("%d%d%d%d%d%d%d%d",dest[idx+40],dest[idx+41],dest[idx+42],dest[idx+43],dest[idx+44],dest[idx+45],dest[idx+46],dest[idx+47]);
+ Dbprintf("%d%d%d%d%d%d%d%d",dest[idx+48],dest[idx+49],dest[idx+50],dest[idx+51],dest[idx+52],dest[idx+53],dest[idx+54],dest[idx+55]);
+ Dbprintf("%d%d%d%d%d%d%d%d",dest[idx+56],dest[idx+57],dest[idx+58],dest[idx+59],dest[idx+60],dest[idx+61],dest[idx+62],dest[idx+63]);
+
+ code = bytebits_to_byte(dest+idx,32);
+ code2 = bytebits_to_byte(dest+idx+32,32);
+
+ short version = bytebits_to_byte(dest+idx+14,4);
+ char unknown = bytebits_to_byte(dest+idx+19,8) ;
+ uint16_t number = bytebits_to_byte(dest+idx+36,9);
+
+ Dbprintf("XSF(%02d)%02x:%d (%08x%08x)",version,unknown,number,code,code2);
+ if (ledcontrol) LED_D_OFF();
+
+ // if we're only looking for one tag
+ if (findone){
+ LED_A_OFF();
+ return;
+ }
+ }
+ WDT_HIT();
+ }
+ DbpString("Stopped");
+ if (ledcontrol) LED_A_OFF();
+}
+
+/*------------------------------
+ * T5555/T5557/T5567 routines
+ *------------------------------
+ */
+
+/* T55x7 configuration register definitions */
+#define T55x7_POR_DELAY 0x00000001
+#define T55x7_ST_TERMINATOR 0x00000008
+#define T55x7_PWD 0x00000010
+#define T55x7_MAXBLOCK_SHIFT 5
+#define T55x7_AOR 0x00000200
+#define T55x7_PSKCF_RF_2 0
+#define T55x7_PSKCF_RF_4 0x00000400
+#define T55x7_PSKCF_RF_8 0x00000800
+#define T55x7_MODULATION_DIRECT 0
+#define T55x7_MODULATION_PSK1 0x00001000
+#define T55x7_MODULATION_PSK2 0x00002000
+#define T55x7_MODULATION_PSK3 0x00003000
+#define T55x7_MODULATION_FSK1 0x00004000
+#define T55x7_MODULATION_FSK2 0x00005000
+#define T55x7_MODULATION_FSK1a 0x00006000
+#define T55x7_MODULATION_FSK2a 0x00007000
+#define T55x7_MODULATION_MANCHESTER 0x00008000
+#define T55x7_MODULATION_BIPHASE 0x00010000
+#define T55x7_BITRATE_RF_8 0
+#define T55x7_BITRATE_RF_16 0x00040000
+#define T55x7_BITRATE_RF_32 0x00080000
+#define T55x7_BITRATE_RF_40 0x000C0000
+#define T55x7_BITRATE_RF_50 0x00100000
+#define T55x7_BITRATE_RF_64 0x00140000
+#define T55x7_BITRATE_RF_100 0x00180000
+#define T55x7_BITRATE_RF_128 0x001C0000
+
+/* T5555 (Q5) configuration register definitions */
+#define T5555_ST_TERMINATOR 0x00000001
+#define T5555_MAXBLOCK_SHIFT 0x00000001
+#define T5555_MODULATION_MANCHESTER 0
+#define T5555_MODULATION_PSK1 0x00000010
+#define T5555_MODULATION_PSK2 0x00000020
+#define T5555_MODULATION_PSK3 0x00000030
+#define T5555_MODULATION_FSK1 0x00000040
+#define T5555_MODULATION_FSK2 0x00000050
+#define T5555_MODULATION_BIPHASE 0x00000060
+#define T5555_MODULATION_DIRECT 0x00000070
+#define T5555_INVERT_OUTPUT 0x00000080
+#define T5555_PSK_RF_2 0
+#define T5555_PSK_RF_4 0x00000100
+#define T5555_PSK_RF_8 0x00000200
+#define T5555_USE_PWD 0x00000400
+#define T5555_USE_AOR 0x00000800
+#define T5555_BITRATE_SHIFT 12
+#define T5555_FAST_WRITE 0x00004000
+#define T5555_PAGE_SELECT 0x00008000
+
+/*
+ * Relevant times in microsecond
+ * To compensate antenna falling times shorten the write times
+ * and enlarge the gap ones.
+ */
+#define START_GAP 250
+#define WRITE_GAP 160
+#define WRITE_0 144 // 192
+#define WRITE_1 400 // 432 for T55x7; 448 for E5550
+
+// Write one bit to card
+void T55xxWriteBit(int bit)
+{
+ FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
+ FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
+ if (bit == 0)
+ SpinDelayUs(WRITE_0);
+ else
+ SpinDelayUs(WRITE_1);
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+ SpinDelayUs(WRITE_GAP);
+}
+
+// Write one card block in page 0, no lock
+void T55xxWriteBlock(uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t PwdMode)
+{
+ unsigned int i;
+
+ FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
+ FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
+
+ // Give it a bit of time for the resonant antenna to settle.
+ // And for the tag to fully power up
+ SpinDelay(150);
+
+ // Now start writting
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+ SpinDelayUs(START_GAP);
+
+ // Opcode
+ T55xxWriteBit(1);
+ T55xxWriteBit(0); //Page 0
+ if (PwdMode == 1){
+ // Pwd
+ for (i = 0x80000000; i != 0; i >>= 1)
+ T55xxWriteBit(Pwd & i);
+ }
+ // Lock bit
+ T55xxWriteBit(0);
+
+ // Data
+ for (i = 0x80000000; i != 0; i >>= 1)
+ T55xxWriteBit(Data & i);
+
+ // Block
+ for (i = 0x04; i != 0; i >>= 1)
+ T55xxWriteBit(Block & i);
+
+ // Now perform write (nominal is 5.6 ms for T55x7 and 18ms for E5550,
+ // so wait a little more)
+ FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
+ SpinDelay(20);
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+}
+
+// Read one card block in page 0
+void T55xxReadBlock(uint32_t Block, uint32_t Pwd, uint8_t PwdMode)
+{
+ uint8_t *dest = (uint8_t *)BigBuf;
+ int m=0, i=0;
+
+ FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
+ m = sizeof(BigBuf);
+ // Clear destination buffer before sending the command
+ memset(dest, 128, m);
+ // Connect the A/D to the peak-detected low-frequency path.
+ SetAdcMuxFor(GPIO_MUXSEL_LOPKD);
+ // Now set up the SSC to get the ADC samples that are now streaming at us.
+ FpgaSetupSsc();
+
+ LED_D_ON();
+ FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
+
+ // Give it a bit of time for the resonant antenna to settle.
+ // And for the tag to fully power up
+ SpinDelay(150);
+
+ // Now start writting
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+ SpinDelayUs(START_GAP);
+
+ // Opcode
+ T55xxWriteBit(1);
+ T55xxWriteBit(0); //Page 0
+ if (PwdMode == 1){
+ // Pwd
+ for (i = 0x80000000; i != 0; i >>= 1)
+ T55xxWriteBit(Pwd & i);
+ }
+ // Lock bit
+ T55xxWriteBit(0);
+ // Block
+ for (i = 0x04; i != 0; i >>= 1)
+ T55xxWriteBit(Block & i);
+
+ // Turn field on to read the response
+ FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
+
+ // Now do the acquisition
+ i = 0;
+ 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) {
+ dest[i] = (uint8_t)AT91C_BASE_SSC->SSC_RHR;
+ // we don't care about actual value, only if it's more or less than a
+ // threshold essentially we capture zero crossings for later analysis
+ // if(dest[i] < 127) dest[i] = 0; else dest[i] = 1;
+ i++;
+ if (i >= m) break;
+ }
+ }
+
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
+ LED_D_OFF();
+ DbpString("DONE!");
+}
+
+// Read card traceability data (page 1)
+void T55xxReadTrace(void){
+ uint8_t *dest = (uint8_t *)BigBuf;
+ int m=0, i=0;
+
+ FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
+ m = sizeof(BigBuf);
+ // Clear destination buffer before sending the command
+ memset(dest, 128, m);
+ // Connect the A/D to the peak-detected low-frequency path.
+ SetAdcMuxFor(GPIO_MUXSEL_LOPKD);
+ // Now set up the SSC to get the ADC samples that are now streaming at us.
+ FpgaSetupSsc();
+
+ LED_D_ON();
+ FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
+
+ // Give it a bit of time for the resonant antenna to settle.
+ // And for the tag to fully power up
+ SpinDelay(150);
+
+ // Now start writting
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+ SpinDelayUs(START_GAP);
+
+ // Opcode
+ T55xxWriteBit(1);
+ T55xxWriteBit(1); //Page 1
+
+ // Turn field on to read the response
+ FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
+
+ // Now do the acquisition
+ i = 0;
+ 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) {
+ dest[i] = (uint8_t)AT91C_BASE_SSC->SSC_RHR;
+ i++;
+ if (i >= m) break;
+ }
+ }
+
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
+ LED_D_OFF();
+ DbpString("DONE!");
+}
+
+/*-------------- Cloning routines -----------*/
+// Copy HID id to card and setup block 0 config
+void CopyHIDtoT55x7(uint32_t hi2, uint32_t hi, uint32_t lo, uint8_t longFMT)
+{
+ int data1=0, data2=0, data3=0, data4=0, data5=0, data6=0; //up to six blocks for long format
+ int last_block = 0;
+
+ if (longFMT){
+ // Ensure no more than 84 bits supplied
+ if (hi2>0xFFFFF) {
+ DbpString("Tags can only have 84 bits.");
+ return;
+ }
+ // Build the 6 data blocks for supplied 84bit ID
+ last_block = 6;
+ data1 = 0x1D96A900; // load preamble (1D) & long format identifier (9E manchester encoded)
+ for (int i=0;i<4;i++) {
+ if (hi2 & (1<<(19-i)))
+ data1 |= (1<<(((3-i)*2)+1)); // 1 -> 10
+ else
+ data1 |= (1<<((3-i)*2)); // 0 -> 01
+ }
+
+ data2 = 0;
+ for (int i=0;i<16;i++) {
+ if (hi2 & (1<<(15-i)))
+ data2 |= (1<<(((15-i)*2)+1)); // 1 -> 10
+ else
+ data2 |= (1<<((15-i)*2)); // 0 -> 01
+ }
+
+ data3 = 0;
+ for (int i=0;i<16;i++) {
+ if (hi & (1<<(31-i)))
+ data3 |= (1<<(((15-i)*2)+1)); // 1 -> 10
+ else
+ data3 |= (1<<((15-i)*2)); // 0 -> 01
+ }
+
+ data4 = 0;
+ for (int i=0;i<16;i++) {
+ if (hi & (1<<(15-i)))
+ data4 |= (1<<(((15-i)*2)+1)); // 1 -> 10
+ else
+ data4 |= (1<<((15-i)*2)); // 0 -> 01
+ }
+
+ data5 = 0;
+ for (int i=0;i<16;i++) {
+ if (lo & (1<<(31-i)))
+ data5 |= (1<<(((15-i)*2)+1)); // 1 -> 10
+ else
+ data5 |= (1<<((15-i)*2)); // 0 -> 01
+ }
+
+ data6 = 0;
+ for (int i=0;i<16;i++) {
+ if (lo & (1<<(15-i)))
+ data6 |= (1<<(((15-i)*2)+1)); // 1 -> 10
+ else
+ data6 |= (1<<((15-i)*2)); // 0 -> 01
+ }
+ }
+ else {
+ // Ensure no more than 44 bits supplied
+ if (hi>0xFFF) {
+ DbpString("Tags can only have 44 bits.");
+ return;
+ }
+
+ // Build the 3 data blocks for supplied 44bit ID
+ last_block = 3;
+
+ data1 = 0x1D000000; // load preamble
+
+ for (int i=0;i<12;i++) {
+ if (hi & (1<<(11-i)))
+ data1 |= (1<<(((11-i)*2)+1)); // 1 -> 10
+ else
+ data1 |= (1<<((11-i)*2)); // 0 -> 01
+ }
+
+ data2 = 0;
+ for (int i=0;i<16;i++) {
+ if (lo & (1<<(31-i)))
+ data2 |= (1<<(((15-i)*2)+1)); // 1 -> 10
+ else
+ data2 |= (1<<((15-i)*2)); // 0 -> 01
+ }
+
+ data3 = 0;
+ for (int i=0;i<16;i++) {
+ if (lo & (1<<(15-i)))
+ data3 |= (1<<(((15-i)*2)+1)); // 1 -> 10
+ else
+ data3 |= (1<<((15-i)*2)); // 0 -> 01
+ }
+ }
+
+ LED_D_ON();
+ // Program the data blocks for supplied ID
+ // and the block 0 for HID format
+ T55xxWriteBlock(data1,1,0,0);
+ T55xxWriteBlock(data2,2,0,0);
+ T55xxWriteBlock(data3,3,0,0);
+
+ if (longFMT) { // if long format there are 6 blocks
+ T55xxWriteBlock(data4,4,0,0);
+ T55xxWriteBlock(data5,5,0,0);
+ T55xxWriteBlock(data6,6,0,0);
+ }
+
+ // Config for HID (RF/50, FSK2a, Maxblock=3 for short/6 for long)
+ T55xxWriteBlock(T55x7_BITRATE_RF_50 |
+ T55x7_MODULATION_FSK2a |
+ last_block << T55x7_MAXBLOCK_SHIFT,
+ 0,0,0);
+
+ LED_D_OFF();
+
+ DbpString("DONE!");
+}
+
+void CopyIOtoT55x7(uint32_t hi, uint32_t lo, uint8_t longFMT)
+{
+ int data1=0, data2=0; //up to six blocks for long format
+
+ data1 = hi; // load preamble
+ data2 = lo;
+
+ LED_D_ON();
+ // Program the data blocks for supplied ID
+ // and the block 0 for HID format
+ T55xxWriteBlock(data1,1,0,0);
+ T55xxWriteBlock(data2,2,0,0);
+
+ //Config Block
+ T55xxWriteBlock(0x00147040,0,0,0);
+ LED_D_OFF();
+
+ DbpString("DONE!");
+}
+
+// Define 9bit header for EM410x tags
+#define EM410X_HEADER 0x1FF
+#define EM410X_ID_LENGTH 40
+
+void WriteEM410x(uint32_t card, uint32_t id_hi, uint32_t id_lo)
+{
+ int i, id_bit;
+ uint64_t id = EM410X_HEADER;
+ uint64_t rev_id = 0; // reversed ID
+ int c_parity[4]; // column parity
+ int r_parity = 0; // row parity
+ uint32_t clock = 0;
+
+ // Reverse ID bits given as parameter (for simpler operations)
+ for (i = 0; i < EM410X_ID_LENGTH; ++i) {
+ if (i < 32) {
+ rev_id = (rev_id << 1) | (id_lo & 1);
+ id_lo >>= 1;
+ } else {
+ rev_id = (rev_id << 1) | (id_hi & 1);
+ id_hi >>= 1;
+ }
+ }
+
+ for (i = 0; i < EM410X_ID_LENGTH; ++i) {
+ id_bit = rev_id & 1;
+
+ if (i % 4 == 0) {
+ // Don't write row parity bit at start of parsing
+ if (i)
+ id = (id << 1) | r_parity;
+ // Start counting parity for new row
+ r_parity = id_bit;
+ } else {
+ // Count row parity
+ r_parity ^= id_bit;
+ }
+
+ // First elements in column?
+ if (i < 4)
+ // Fill out first elements
+ c_parity[i] = id_bit;
+ else
+ // Count column parity
+ c_parity[i % 4] ^= id_bit;
+
+ // Insert ID bit
+ id = (id << 1) | id_bit;
+ rev_id >>= 1;
+ }
+
+ // Insert parity bit of last row
+ id = (id << 1) | r_parity;
+
+ // Fill out column parity at the end of tag
+ for (i = 0; i < 4; ++i)
+ id = (id << 1) | c_parity[i];
+
+ // Add stop bit
+ id <<= 1;
+
+ Dbprintf("Started writing %s tag ...", card ? "T55x7":"T5555");
+ LED_D_ON();
+
+ // Write EM410x ID
+ T55xxWriteBlock((uint32_t)(id >> 32), 1, 0, 0);
+ T55xxWriteBlock((uint32_t)id, 2, 0, 0);
+
+ // Config for EM410x (RF/64, Manchester, Maxblock=2)
+ if (card) {
+ // Clock rate is stored in bits 8-15 of the card value
+ clock = (card & 0xFF00) >> 8;
+ Dbprintf("Clock rate: %d", clock);
+ switch (clock)
+ {
+ case 32:
+ clock = T55x7_BITRATE_RF_32;
+ break;
+ case 16:
+ clock = T55x7_BITRATE_RF_16;
+ break;
+ case 0:
+ // A value of 0 is assumed to be 64 for backwards-compatibility
+ // Fall through...
+ case 64:
+ clock = T55x7_BITRATE_RF_64;
+ break;
+ default:
+ Dbprintf("Invalid clock rate: %d", clock);
+ return;
+ }
+
+ // Writing configuration for T55x7 tag
+ T55xxWriteBlock(clock |
+ T55x7_MODULATION_MANCHESTER |
+ 2 << T55x7_MAXBLOCK_SHIFT,
+ 0, 0, 0);
+ }
+ else
+ // Writing configuration for T5555(Q5) tag
+ T55xxWriteBlock(0x1F << T5555_BITRATE_SHIFT |
+ T5555_MODULATION_MANCHESTER |
+ 2 << T5555_MAXBLOCK_SHIFT,
+ 0, 0, 0);
+
+ LED_D_OFF();
+ Dbprintf("Tag %s written with 0x%08x%08x\n", card ? "T55x7":"T5555",
+ (uint32_t)(id >> 32), (uint32_t)id);
+}
+
+// Clone Indala 64-bit tag by UID to T55x7
+void CopyIndala64toT55x7(int hi, int lo)
+{
+
+ //Program the 2 data blocks for supplied 64bit UID
+ // and the block 0 for Indala64 format
+ T55xxWriteBlock(hi,1,0,0);
+ T55xxWriteBlock(lo,2,0,0);
+ //Config for Indala (RF/32;PSK1 with RF/2;Maxblock=2)
+ T55xxWriteBlock(T55x7_BITRATE_RF_32 |
+ T55x7_MODULATION_PSK1 |
+ 2 << T55x7_MAXBLOCK_SHIFT,
+ 0, 0, 0);
+ //Alternative config for Indala (Extended mode;RF/32;PSK1 with RF/2;Maxblock=2;Inverse data)
+// T5567WriteBlock(0x603E1042,0);
+
+ DbpString("DONE!");
+
+}
+
+void CopyIndala224toT55x7(int uid1, int uid2, int uid3, int uid4, int uid5, int uid6, int uid7)
+{
+
+ //Program the 7 data blocks for supplied 224bit UID
+ // and the block 0 for Indala224 format
+ T55xxWriteBlock(uid1,1,0,0);
+ T55xxWriteBlock(uid2,2,0,0);
+ T55xxWriteBlock(uid3,3,0,0);
+ T55xxWriteBlock(uid4,4,0,0);
+ T55xxWriteBlock(uid5,5,0,0);
+ T55xxWriteBlock(uid6,6,0,0);
+ T55xxWriteBlock(uid7,7,0,0);
+ //Config for Indala (RF/32;PSK1 with RF/2;Maxblock=7)
+ T55xxWriteBlock(T55x7_BITRATE_RF_32 |
+ T55x7_MODULATION_PSK1 |
+ 7 << T55x7_MAXBLOCK_SHIFT,
+ 0,0,0);
+ //Alternative config for Indala (Extended mode;RF/32;PSK1 with RF/2;Maxblock=7;Inverse data)
+// T5567WriteBlock(0x603E10E2,0);
+
+ DbpString("DONE!");
+
+}
+
+
+#define abs(x) ( ((x)<0) ? -(x) : (x) )
+#define max(x,y) ( x<y ? y:x)
+
+int DemodPCF7931(uint8_t **outBlocks) {
+ uint8_t BitStream[256];
+ uint8_t Blocks[8][16];
+ uint8_t *GraphBuffer = (uint8_t *)BigBuf;
+ int GraphTraceLen = sizeof(BigBuf);
+ int i, j, lastval, bitidx, half_switch;
+ int clock = 64;
+ int tolerance = clock / 8;
+ int pmc, block_done;
+ int lc, warnings = 0;
+ int num_blocks = 0;
+ int lmin=128, lmax=128;
+ uint8_t dir;
+
+ AcquireRawAdcSamples125k(0);
+
+ lmin = 64;
+ lmax = 192;
+
+ i = 2;
+
+ /* Find first local max/min */
+ if(GraphBuffer[1] > GraphBuffer[0]) {
+ while(i < GraphTraceLen) {
+ if( !(GraphBuffer[i] > GraphBuffer[i-1]) && GraphBuffer[i] > lmax)
+ break;
+ i++;
+ }
+ dir = 0;
+ }
+ else {
+ while(i < GraphTraceLen) {
+ if( !(GraphBuffer[i] < GraphBuffer[i-1]) && GraphBuffer[i] < lmin)
+ break;
+ i++;
+ }
+ dir = 1;
+ }
+
+ lastval = i++;
+ half_switch = 0;
+ pmc = 0;
+ block_done = 0;
+
+ for (bitidx = 0; i < GraphTraceLen; i++)
+ {
+ if ( (GraphBuffer[i-1] > GraphBuffer[i] && dir == 1 && GraphBuffer[i] > lmax) || (GraphBuffer[i-1] < GraphBuffer[i] && dir == 0 && GraphBuffer[i] < lmin))
+ {
+ lc = i - lastval;
+ lastval = i;
+
+ // Switch depending on lc length:
+ // Tolerance is 1/8 of clock rate (arbitrary)
+ if (abs(lc-clock/4) < tolerance) {
+ // 16T0
+ if((i - pmc) == lc) { /* 16T0 was previous one */
+ /* It's a PMC ! */
+ i += (128+127+16+32+33+16)-1;
+ lastval = i;
+ pmc = 0;
+ block_done = 1;
+ }
+ else {
+ pmc = i;
+ }
+ } else if (abs(lc-clock/2) < tolerance) {
+ // 32TO
+ if((i - pmc) == lc) { /* 16T0 was previous one */
+ /* It's a PMC ! */
+ i += (128+127+16+32+33)-1;
+ lastval = i;
+ pmc = 0;
+ block_done = 1;
+ }
+ else if(half_switch == 1) {
+ BitStream[bitidx++] = 0;
+ half_switch = 0;
+ }
+ else
+ half_switch++;
+ } else if (abs(lc-clock) < tolerance) {
+ // 64TO
+ BitStream[bitidx++] = 1;
+ } else {
+ // Error
+ warnings++;
+ if (warnings > 10)
+ {
+ Dbprintf("Error: too many detection errors, aborting.");
+ return 0;
+ }
+ }
+
+ if(block_done == 1) {
+ if(bitidx == 128) {
+ for(j=0; j<16; j++) {
+ Blocks[num_blocks][j] = 128*BitStream[j*8+7]+
+ 64*BitStream[j*8+6]+
+ 32*BitStream[j*8+5]+
+ 16*BitStream[j*8+4]+
+ 8*BitStream[j*8+3]+
+ 4*BitStream[j*8+2]+
+ 2*BitStream[j*8+1]+
+ BitStream[j*8];
+ }
+ num_blocks++;
+ }
+ bitidx = 0;
+ block_done = 0;
+ half_switch = 0;
+ }
+ if (GraphBuffer[i-1] > GraphBuffer[i]) dir=0;
+ else dir = 1;
+ }
+ if(bitidx==255)
+ bitidx=0;
+ warnings = 0;
+ if(num_blocks == 4) break;
projects / proxmark3-svn / blobdiff