git.zerfleddert.de Git - proxmark3-svn/blobdiff

#include "crc16.h"

#include "string.h"

#include "lfdemod.h"

#include "crc16.h"

#include "string.h"

#include "lfdemod.h"

-

-/**

-* Does the sample acquisition. If threshold is specified, the actual sampling

-* is not commenced until the threshold has been reached.

-* @param trigger_threshold - the threshold

-* @param silent - is true, now outputs are made. If false, dbprints the status

-*/

-void DoAcquisition125k_internal(int trigger_threshold,bool silent)

-{

- uint8_t *dest = (uint8_t *)BigBuf;

- int n = sizeof(BigBuf);

- int i;

-

- memset(dest, 0, n);

- i = 0;

- for(;;) {

- if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_TXRDY) {

- AT91C_BASE_SSC->SSC_THR = 0x43;

- LED_D_ON();

- }

- if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_RXRDY) {

- dest[i] = (uint8_t)AT91C_BASE_SSC->SSC_RHR;

- LED_D_OFF();

- if (trigger_threshold != -1 && dest[i] < trigger_threshold)

- continue;

- else

- trigger_threshold = -1;

- if (++i >= n) break;

- }

- if(!silent)

- {

- Dbprintf("buffer samples: %02x %02x %02x %02x %02x %02x %02x %02x ...",

- dest[0], dest[1], dest[2], dest[3], dest[4], dest[5], dest[6], dest[7]);

-

- }

-}

-/**

-* Perform sample aquisition.

-*/

-void DoAcquisition125k(int trigger_threshold)

-{

- DoAcquisition125k_internal(trigger_threshold, false);

-}

+#include "lfsampling.h"

+#include "protocols.h"

+#include "usb_cdc.h" // for usb_poll_validate_length

/**

-* Setup the FPGA to listen for samples. This method downloads the FPGA bitstream

-* if not already loaded, sets divisor and starts up the antenna.

-* @param divisor : 1, 88> 255 or negative ==> 134.8 KHz

-* 0 or 95 ==> 125 KHz

-*

-**/

-void LFSetupFPGAForADC(int divisor, bool lf_field)

-{

- FpgaDownloadAndGo(FPGA_BITSTREAM_LF);

- if ( (divisor == 1) || (divisor < 0) || (divisor > 255) )

- FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 88); //134.8Khz

- else if (divisor == 0)

- FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz

- else

- FpgaSendCommand(FPGA_CMD_SET_DIVISOR, divisor);

-

- FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | (lf_field ? FPGA_LF_ADC_READER_FIELD : 0));

-

- // Connect the A/D to the peak-detected low-frequency path.

- SetAdcMuxFor(GPIO_MUXSEL_LOPKD);

- // Give it a bit of time for the resonant antenna to settle.

- SpinDelay(50);

- // Now set up the SSC to get the ADC samples that are now streaming at us.

- FpgaSetupSsc();

-}

-/**

-* Initializes the FPGA, and acquires the samples.

-**/

-void AcquireRawAdcSamples125k(int divisor)

+ * Function to do a modulation and then get samples.

+ * @param delay_off

+ * @param period_0

+ * @param period_1

+ * @param command

+ */

+void ModThenAcquireRawAdcSamples125k(uint32_t delay_off, uint32_t period_0, uint32_t period_1, uint8_t *command)

{

- LFSetupFPGAForADC(divisor, true);

- // Now call the acquisition routine

- DoAcquisition125k_internal(-1,false);

-}

-/**

-* Initializes the FPGA for snoop-mode, and acquires the samples.

-**/

-void SnoopLFRawAdcSamples(int divisor, int trigger_threshold)

-{

- LFSetupFPGAForADC(divisor, false);

- DoAcquisition125k(trigger_threshold);

-}

-

-void ModThenAcquireRawAdcSamples125k(int delay_off, int period_0, int period_1, uint8_t *command)

-{

-

- /* Make sure the tag is reset */

- FpgaDownloadAndGo(FPGA_BITSTREAM_LF);

- FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);

- SpinDelay(2500);

-

- int divisor_used = 95; // 125 KHz

- // see if 'h' was specified

-

- if (command[strlen((char *) command) - 1] == 'h')

- divisor_used = 88; // 134.8 KHz

-

- FpgaSendCommand(FPGA_CMD_SET_DIVISOR, divisor_used);

- FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);

- // Give it a bit of time for the resonant antenna to settle.

- SpinDelay(50);

-

- // And a little more time for the tag to fully power up

- SpinDelay(2000);

-

- // Now set up the SSC to get the ADC samples that are now streaming at us.

- FpgaSetupSsc();

-

- // now modulate the reader field

- while(*command != '\0' && *command != ' ') {

- FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);

- LED_D_OFF();

- SpinDelayUs(delay_off);

- FpgaSendCommand(FPGA_CMD_SET_DIVISOR, divisor_used);

-

- FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);

- LED_D_ON();

- if(*(command++) == '0')

- SpinDelayUs(period_0);

- else

- SpinDelayUs(period_1);

- }

- FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);

- LED_D_OFF();

- SpinDelayUs(delay_off);

- FpgaSendCommand(FPGA_CMD_SET_DIVISOR, divisor_used);

-

- FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);

-

- // now do the read

- DoAcquisition125k(-1);

+ int divisor_used = 95; // 125 KHz

+ // see if 'h' was specified

+

+ if (command[strlen((char *) command) - 1] == 'h')

+ divisor_used = 88; // 134.8 KHz

+

+ sample_config sc = { 0,0,1, divisor_used, 0};

+ setSamplingConfig(&sc);

+ //clear read buffer

+ BigBuf_Clear_keep_EM();

+

+ /* Make sure the tag is reset */

+ FpgaDownloadAndGo(FPGA_BITSTREAM_LF);

+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);

+ SpinDelay(2500);

+

+ LFSetupFPGAForADC(sc.divisor, 1);

+

+ // And a little more time for the tag to fully power up

+ SpinDelay(2000);

+

+ // now modulate the reader field

+ while(*command != '\0' && *command != ' ') {

+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);

+ LED_D_OFF();

+ SpinDelayUs(delay_off);

+ FpgaSendCommand(FPGA_CMD_SET_DIVISOR, sc.divisor);

+

+ FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);

+ LED_D_ON();

+ if(*(command++) == '0')

+ SpinDelayUs(period_0);

+ else

+ SpinDelayUs(period_1);

+ }

+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);

+ LED_D_OFF();

+ SpinDelayUs(delay_off);

+ FpgaSendCommand(FPGA_CMD_SET_DIVISOR, sc.divisor);

+

+ FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);

+

+ // now do the read

+ DoAcquisition_config(false);

}

/* blank r/w tag data stream

}

/* blank r/w tag data stream

*/

void ReadTItag(void)

{

*/

void ReadTItag(void)

{

- // some hardcoded initial params

- // when we read a TI tag we sample the zerocross line at 2Mhz

- // TI tags modulate a 1 as 16 cycles of 123.2Khz

- // TI tags modulate a 0 as 16 cycles of 134.2Khz

-#define FSAMPLE 2000000

-#define FREQLO 123200

-#define FREQHI 134200

-

- signed char *dest = (signed char *)BigBuf;

- int n = sizeof(BigBuf);

-

- // 128 bit shift register [shift3:shift2:shift1:shift0]

- uint32_t shift3 = 0, shift2 = 0, shift1 = 0, shift0 = 0;

-

- int i, cycles=0, samples=0;

- // how many sample points fit in 16 cycles of each frequency

- uint32_t sampleslo = (FSAMPLE<<4)/FREQLO, sampleshi = (FSAMPLE<<4)/FREQHI;

- // when to tell if we're close enough to one freq or another

- uint32_t threshold = (sampleslo - sampleshi + 1)>>1;

-

- // TI tags charge at 134.2Khz

- FpgaDownloadAndGo(FPGA_BITSTREAM_LF);

- FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 88); //134.8Khz

-

- // Place FPGA in passthrough mode, in this mode the CROSS_LO line

- // connects to SSP_DIN and the SSP_DOUT logic level controls

- // whether we're modulating the antenna (high)

- // or listening to the antenna (low)

- FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_PASSTHRU);

-

- // get TI tag data into the buffer

- AcquireTiType();

-

- FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);

-

- for (i=0; i<n-1; i++) {

- // count cycles by looking for lo to hi zero crossings

- if ( (dest[i]<0) && (dest[i+1]>0) ) {

- cycles++;

- // after 16 cycles, measure the frequency

- if (cycles>15) {

- cycles=0;

- samples=i-samples; // number of samples in these 16 cycles

-

- // TI bits are coming to us lsb first so shift them

- // right through our 128 bit right shift register

- shift0 = (shift0>>1) | (shift1 << 31);

- shift1 = (shift1>>1) | (shift2 << 31);

- shift2 = (shift2>>1) | (shift3 << 31);

- shift3 >>= 1;

-

- // check if the cycles fall close to the number

- // expected for either the low or high frequency

- if ( (samples>(sampleslo-threshold)) && (samples<(sampleslo+threshold)) ) {

- // low frequency represents a 1

- shift3 |= (1<<31);

- } else if ( (samples>(sampleshi-threshold)) && (samples<(sampleshi+threshold)) ) {

- // high frequency represents a 0

- } else {

- // probably detected a gay waveform or noise

- // use this as gaydar or discard shift register and start again

- shift3 = shift2 = shift1 = shift0 = 0;

- }

- samples = i;

-

- // for each bit we receive, test if we've detected a valid tag

-

- // if we see 17 zeroes followed by 6 ones, we might have a tag

- // remember the bits are backwards

- if ( ((shift0 & 0x7fffff) == 0x7e0000) ) {

- // if start and end bytes match, we have a tag so break out of the loop

- if ( ((shift0>>16)&0xff) == ((shift3>>8)&0xff) ) {

- cycles = 0xF0B; //use this as a flag (ugly but whatever)

- break;

- }

-

- // if flag is set we have a tag

- if (cycles!=0xF0B) {

- DbpString("Info: No valid tag detected.");

- } else {

- // put 64 bit data into shift1 and shift0

- shift0 = (shift0>>24) | (shift1 << 8);

- shift1 = (shift1>>24) | (shift2 << 8);

-

- // align 16 bit crc into lower half of shift2

- shift2 = ((shift2>>24) | (shift3 << 8)) & 0x0ffff;

-

- // if r/w tag, check ident match

- if ( shift3&(1<<15) ) {

- DbpString("Info: TI tag is rewriteable");

- // only 15 bits compare, last bit of ident is not valid

- if ( ((shift3>>16)^shift0)&0x7fff ) {

- DbpString("Error: Ident mismatch!");

- } else {

- DbpString("Info: TI tag ident is valid");

- }

- } else {

- DbpString("Info: TI tag is readonly");

- }

-

- // WARNING the order of the bytes in which we calc crc below needs checking

- // i'm 99% sure the crc algorithm is correct, but it may need to eat the

- // bytes in reverse or something

- // calculate CRC

- uint32_t crc=0;

-

- crc = update_crc16(crc, (shift0)&0xff);

- crc = update_crc16(crc, (shift0>>8)&0xff);

- crc = update_crc16(crc, (shift0>>16)&0xff);

- crc = update_crc16(crc, (shift0>>24)&0xff);

- crc = update_crc16(crc, (shift1)&0xff);

- crc = update_crc16(crc, (shift1>>8)&0xff);

- crc = update_crc16(crc, (shift1>>16)&0xff);

- crc = update_crc16(crc, (shift1>>24)&0xff);

-

- Dbprintf("Info: Tag data: %x%08x, crc=%x",

- (unsigned int)shift1, (unsigned int)shift0, (unsigned int)shift2 & 0xFFFF);

- if (crc != (shift2&0xffff)) {

- Dbprintf("Error: CRC mismatch, expected %x", (unsigned int)crc);

- } else {

- DbpString("Info: CRC is good");

- }

+ // some hardcoded initial params

+ // when we read a TI tag we sample the zerocross line at 2Mhz

+ // TI tags modulate a 1 as 16 cycles of 123.2Khz

+ // TI tags modulate a 0 as 16 cycles of 134.2Khz

+ #define FSAMPLE 2000000

+ #define FREQLO 123200

+ #define FREQHI 134200

+

+ signed char *dest = (signed char *)BigBuf_get_addr();

+ uint16_t n = BigBuf_max_traceLen();

+ // 128 bit shift register [shift3:shift2:shift1:shift0]

+ uint32_t shift3 = 0, shift2 = 0, shift1 = 0, shift0 = 0;

+

+ int i, cycles=0, samples=0;

+ // how many sample points fit in 16 cycles of each frequency

+ uint32_t sampleslo = (FSAMPLE<<4)/FREQLO, sampleshi = (FSAMPLE<<4)/FREQHI;

+ // when to tell if we're close enough to one freq or another

+ uint32_t threshold = (sampleslo - sampleshi + 1)>>1;

+

+ // TI tags charge at 134.2Khz

+ FpgaDownloadAndGo(FPGA_BITSTREAM_LF);

+ FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 88); //134.8Khz

+

+ // Place FPGA in passthrough mode, in this mode the CROSS_LO line

+ // connects to SSP_DIN and the SSP_DOUT logic level controls

+ // whether we're modulating the antenna (high)

+ // or listening to the antenna (low)

+ FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_PASSTHRU);

+

+ // get TI tag data into the buffer

+ AcquireTiType();

+

+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);

+

+ for (i=0; i<n-1; i++) {

+ // count cycles by looking for lo to hi zero crossings

+ if ( (dest[i]<0) && (dest[i+1]>0) ) {

+ cycles++;

+ // after 16 cycles, measure the frequency

+ if (cycles>15) {

+ cycles=0;

+ samples=i-samples; // number of samples in these 16 cycles

+

+ // TI bits are coming to us lsb first so shift them

+ // right through our 128 bit right shift register

+ shift0 = (shift0>>1) | (shift1 << 31);

+ shift1 = (shift1>>1) | (shift2 << 31);

+ shift2 = (shift2>>1) | (shift3 << 31);

+ shift3 >>= 1;

+

+ // check if the cycles fall close to the number

+ // expected for either the low or high frequency

+ if ( (samples>(sampleslo-threshold)) && (samples<(sampleslo+threshold)) ) {

+ // low frequency represents a 1

+ shift3 |= (1<<31);

+ } else if ( (samples>(sampleshi-threshold)) && (samples<(sampleshi+threshold)) ) {

+ // high frequency represents a 0

+ } else {

+ // probably detected a gay waveform or noise

+ // use this as gaydar or discard shift register and start again

+ shift3 = shift2 = shift1 = shift0 = 0;

+ }

+ samples = i;

+

+ // for each bit we receive, test if we've detected a valid tag

+

+ // if we see 17 zeroes followed by 6 ones, we might have a tag

+ // remember the bits are backwards

+ if ( ((shift0 & 0x7fffff) == 0x7e0000) ) {

+ // if start and end bytes match, we have a tag so break out of the loop

+ if ( ((shift0>>16)&0xff) == ((shift3>>8)&0xff) ) {

+ cycles = 0xF0B; //use this as a flag (ugly but whatever)

+ break;

+ }

+

+ // if flag is set we have a tag

+ if (cycles!=0xF0B) {

+ DbpString("Info: No valid tag detected.");

+ } else {

+ // put 64 bit data into shift1 and shift0

+ shift0 = (shift0>>24) | (shift1 << 8);

+ shift1 = (shift1>>24) | (shift2 << 8);

+

+ // align 16 bit crc into lower half of shift2

+ shift2 = ((shift2>>24) | (shift3 << 8)) & 0x0ffff;

+

+ // if r/w tag, check ident match

+ if (shift3 & (1<<15) ) {

+ DbpString("Info: TI tag is rewriteable");

+ // only 15 bits compare, last bit of ident is not valid

+ if (((shift3 >> 16) ^ shift0) & 0x7fff ) {

+ DbpString("Error: Ident mismatch!");

+ } else {

+ DbpString("Info: TI tag ident is valid");

+ }

+ } else {

+ DbpString("Info: TI tag is readonly");

+ }

+

+ // WARNING the order of the bytes in which we calc crc below needs checking

+ // i'm 99% sure the crc algorithm is correct, but it may need to eat the

+ // bytes in reverse or something

+ // calculate CRC

+ uint32_t crc=0;

+

+ crc = update_crc16(crc, (shift0)&0xff);

+ crc = update_crc16(crc, (shift0>>8)&0xff);

+ crc = update_crc16(crc, (shift0>>16)&0xff);

+ crc = update_crc16(crc, (shift0>>24)&0xff);

+ crc = update_crc16(crc, (shift1)&0xff);

+ crc = update_crc16(crc, (shift1>>8)&0xff);

+ crc = update_crc16(crc, (shift1>>16)&0xff);

+ crc = update_crc16(crc, (shift1>>24)&0xff);

+

+ Dbprintf("Info: Tag data: %x%08x, crc=%x",

+ (unsigned int)shift1, (unsigned int)shift0, (unsigned int)shift2 & 0xFFFF);

+ if (crc != (shift2&0xffff)) {

+ Dbprintf("Error: CRC mismatch, expected %x", (unsigned int)crc);

+ } else {

+ DbpString("Info: CRC is good");

+ }

}

void WriteTIbyte(uint8_t b)

{

}

void WriteTIbyte(uint8_t b)

{

- int i = 0;

-

- // modulate 8 bits out to the antenna

- for (i=0; i<8; i++)

- {

- if (b&(1<<i)) {

- // stop modulating antenna

- LOW(GPIO_SSC_DOUT);

- SpinDelayUs(1000);

- // modulate antenna

- HIGH(GPIO_SSC_DOUT);

- SpinDelayUs(1000);

- } else {

- // stop modulating antenna

- LOW(GPIO_SSC_DOUT);

- SpinDelayUs(300);

- // modulate antenna

- HIGH(GPIO_SSC_DOUT);

- SpinDelayUs(1700);

- }

+ int i = 0;

+

+ // modulate 8 bits out to the antenna

+ for (i=0; i<8; i++)

+ {

+ if (b&(1<<i)) {

+ // stop modulating antenna

+ LOW(GPIO_SSC_DOUT);

+ SpinDelayUs(1000);

+ // modulate antenna

+ HIGH(GPIO_SSC_DOUT);

+ SpinDelayUs(1000);

+ } else {

+ // stop modulating antenna

+ LOW(GPIO_SSC_DOUT);

+ SpinDelayUs(300);

+ // modulate antenna

+ HIGH(GPIO_SSC_DOUT);

+ SpinDelayUs(1700);

+ }

}

void AcquireTiType(void)

{

}

void AcquireTiType(void)

{

- int i, j, n;

- // tag transmission is <20ms, sampling at 2M gives us 40K samples max

- // each sample is 1 bit stuffed into a uint32_t so we need 1250 uint32_t

-#define TIBUFLEN 1250

-

- // clear buffer

- memset(BigBuf,0,sizeof(BigBuf));

-

- // Set up the synchronous serial port

- AT91C_BASE_PIOA->PIO_PDR = GPIO_SSC_DIN;

- AT91C_BASE_PIOA->PIO_ASR = GPIO_SSC_DIN;

-

- // steal this pin from the SSP and use it to control the modulation

- AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DOUT;

- AT91C_BASE_PIOA->PIO_OER = GPIO_SSC_DOUT;

-

- AT91C_BASE_SSC->SSC_CR = AT91C_SSC_SWRST;

- AT91C_BASE_SSC->SSC_CR = AT91C_SSC_RXEN | AT91C_SSC_TXEN;

-

- // Sample at 2 Mbit/s, so TI tags are 16.2 vs. 14.9 clocks long

- // 48/2 = 24 MHz clock must be divided by 12

- AT91C_BASE_SSC->SSC_CMR = 12;

-

- AT91C_BASE_SSC->SSC_RCMR = SSC_CLOCK_MODE_SELECT(0);

- AT91C_BASE_SSC->SSC_RFMR = SSC_FRAME_MODE_BITS_IN_WORD(32) | AT91C_SSC_MSBF;

- AT91C_BASE_SSC->SSC_TCMR = 0;

- AT91C_BASE_SSC->SSC_TFMR = 0;

-

- LED_D_ON();

-

- // modulate antenna

- HIGH(GPIO_SSC_DOUT);

-

- // Charge TI tag for 50ms.

- SpinDelay(50);

-

- // stop modulating antenna and listen

- LOW(GPIO_SSC_DOUT);

-

- LED_D_OFF();

-

- i = 0;

- for(;;) {

- if(AT91C_BASE_SSC->SSC_SR & AT91C_SSC_RXRDY) {

- BigBuf[i] = AT91C_BASE_SSC->SSC_RHR; // store 32 bit values in buffer

- i++; if(i >= TIBUFLEN) break;

- }

- WDT_HIT();

- }

-

- // return stolen pin to SSP

- AT91C_BASE_PIOA->PIO_PDR = GPIO_SSC_DOUT;

- AT91C_BASE_PIOA->PIO_ASR = GPIO_SSC_DIN | GPIO_SSC_DOUT;

-

- char *dest = (char *)BigBuf;

- n = TIBUFLEN*32;

- // unpack buffer

- for (i=TIBUFLEN-1; i>=0; i--) {

- for (j=0; j<32; j++) {

- if(BigBuf[i] & (1 << j)) {

- dest[--n] = 1;

- } else {

- dest[--n] = -1;

- }

+ int i, j, n;

+ // tag transmission is <20ms, sampling at 2M gives us 40K samples max

+ // each sample is 1 bit stuffed into a uint32_t so we need 1250 uint32_t

+ #define TIBUFLEN 1250

+

+ // clear buffer

+ uint32_t *BigBuf = (uint32_t *)BigBuf_get_addr();

+ BigBuf_Clear_ext(false);

+

+ // Set up the synchronous serial port

+ AT91C_BASE_PIOA->PIO_PDR = GPIO_SSC_DIN;

+ AT91C_BASE_PIOA->PIO_ASR = GPIO_SSC_DIN;

+

+ // steal this pin from the SSP and use it to control the modulation

+ AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DOUT;

+ AT91C_BASE_PIOA->PIO_OER = GPIO_SSC_DOUT;

+

+ AT91C_BASE_SSC->SSC_CR = AT91C_SSC_SWRST;

+ AT91C_BASE_SSC->SSC_CR = AT91C_SSC_RXEN | AT91C_SSC_TXEN;

+

+ // Sample at 2 Mbit/s, so TI tags are 16.2 vs. 14.9 clocks long

+ // 48/2 = 24 MHz clock must be divided by 12

+ AT91C_BASE_SSC->SSC_CMR = 12;

+

+ AT91C_BASE_SSC->SSC_RCMR = SSC_CLOCK_MODE_SELECT(0);

+ AT91C_BASE_SSC->SSC_RFMR = SSC_FRAME_MODE_BITS_IN_WORD(32) | AT91C_SSC_MSBF;

+ AT91C_BASE_SSC->SSC_TCMR = 0;

+ AT91C_BASE_SSC->SSC_TFMR = 0;

+

+ LED_D_ON();

+

+ // modulate antenna

+ HIGH(GPIO_SSC_DOUT);

+

+ // Charge TI tag for 50ms.

+ SpinDelay(50);

+

+ // stop modulating antenna and listen

+ LOW(GPIO_SSC_DOUT);

+

+ LED_D_OFF();

+

+ i = 0;

+ for(;;) {

+ if(AT91C_BASE_SSC->SSC_SR & AT91C_SSC_RXRDY) {

+ BigBuf[i] = AT91C_BASE_SSC->SSC_RHR; // store 32 bit values in buffer

+ i++; if(i >= TIBUFLEN) break;

+ }

+ WDT_HIT();

+ }

+

+ // return stolen pin to SSP

+ AT91C_BASE_PIOA->PIO_PDR = GPIO_SSC_DOUT;

+ AT91C_BASE_PIOA->PIO_ASR = GPIO_SSC_DIN | GPIO_SSC_DOUT;

+

+ char *dest = (char *)BigBuf_get_addr();

+ n = TIBUFLEN*32;

+ // unpack buffer

+ for (i=TIBUFLEN-1; i>=0; i--) {

+ for (j=0; j<32; j++) {

+ if(BigBuf[i] & (1 << j)) {

+ dest[--n] = 1;

+ } else {

+ dest[--n] = -1;

+ }

}

// arguments: 64bit data split into 32bit idhi:idlo and optional 16bit crc

}

// arguments: 64bit data split into 32bit idhi:idlo and optional 16bit crc

// if not provided a valid crc will be computed from the data and written.

void WriteTItag(uint32_t idhi, uint32_t idlo, uint16_t crc)

{

// if not provided a valid crc will be computed from the data and written.

void WriteTItag(uint32_t idhi, uint32_t idlo, uint16_t crc)

{

- FpgaDownloadAndGo(FPGA_BITSTREAM_LF);

- if(crc == 0) {

- crc = update_crc16(crc, (idlo)&0xff);

- crc = update_crc16(crc, (idlo>>8)&0xff);

- crc = update_crc16(crc, (idlo>>16)&0xff);

- crc = update_crc16(crc, (idlo>>24)&0xff);

- crc = update_crc16(crc, (idhi)&0xff);

- crc = update_crc16(crc, (idhi>>8)&0xff);

- crc = update_crc16(crc, (idhi>>16)&0xff);

- crc = update_crc16(crc, (idhi>>24)&0xff);

- }

- Dbprintf("Writing to tag: %x%08x, crc=%x",

- (unsigned int) idhi, (unsigned int) idlo, crc);

-

- // TI tags charge at 134.2Khz

- FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 88); //134.8Khz

- // Place FPGA in passthrough mode, in this mode the CROSS_LO line

- // connects to SSP_DIN and the SSP_DOUT logic level controls

- // whether we're modulating the antenna (high)

- // or listening to the antenna (low)

- FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_PASSTHRU);

- LED_A_ON();

-

- // steal this pin from the SSP and use it to control the modulation

- AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DOUT;

- AT91C_BASE_PIOA->PIO_OER = GPIO_SSC_DOUT;

-

- // writing algorithm:

- // a high bit consists of a field off for 1ms and field on for 1ms

- // a low bit consists of a field off for 0.3ms and field on for 1.7ms

- // initiate a charge time of 50ms (field on) then immediately start writing bits

- // start by writing 0xBB (keyword) and 0xEB (password)

- // then write 80 bits of data (or 64 bit data + 16 bit crc if you prefer)

- // finally end with 0x0300 (write frame)

- // all data is sent lsb firts

- // finish with 15ms programming time

-

- // modulate antenna

- HIGH(GPIO_SSC_DOUT);

- SpinDelay(50); // charge time

-

- WriteTIbyte(0xbb); // keyword

- WriteTIbyte(0xeb); // password

- WriteTIbyte( (idlo )&0xff );

- WriteTIbyte( (idlo>>8 )&0xff );

- WriteTIbyte( (idlo>>16)&0xff );

- WriteTIbyte( (idlo>>24)&0xff );

- WriteTIbyte( (idhi )&0xff );

- WriteTIbyte( (idhi>>8 )&0xff );

- WriteTIbyte( (idhi>>16)&0xff );

- WriteTIbyte( (idhi>>24)&0xff ); // data hi to lo

- WriteTIbyte( (crc )&0xff ); // crc lo

- WriteTIbyte( (crc>>8 )&0xff ); // crc hi

- WriteTIbyte(0x00); // write frame lo

- WriteTIbyte(0x03); // write frame hi

- HIGH(GPIO_SSC_DOUT);

- SpinDelay(50); // programming time

-

- LED_A_OFF();

-

- // get TI tag data into the buffer

- AcquireTiType();

-

- FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);

- DbpString("Now use tiread to check");

+ FpgaDownloadAndGo(FPGA_BITSTREAM_LF);

+ if(crc == 0) {

+ crc = update_crc16(crc, (idlo)&0xff);

+ crc = update_crc16(crc, (idlo>>8)&0xff);

+ crc = update_crc16(crc, (idlo>>16)&0xff);

+ crc = update_crc16(crc, (idlo>>24)&0xff);

+ crc = update_crc16(crc, (idhi)&0xff);

+ crc = update_crc16(crc, (idhi>>8)&0xff);

+ crc = update_crc16(crc, (idhi>>16)&0xff);

+ crc = update_crc16(crc, (idhi>>24)&0xff);

+ }

+ Dbprintf("Writing to tag: %x%08x, crc=%x",

+ (unsigned int) idhi, (unsigned int) idlo, crc);

+

+ // TI tags charge at 134.2Khz

+ FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 88); //134.8Khz

+ // Place FPGA in passthrough mode, in this mode the CROSS_LO line

+ // connects to SSP_DIN and the SSP_DOUT logic level controls

+ // whether we're modulating the antenna (high)

+ // or listening to the antenna (low)

+ FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_PASSTHRU);

+ LED_A_ON();

+

+ // steal this pin from the SSP and use it to control the modulation

+ AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DOUT;

+ AT91C_BASE_PIOA->PIO_OER = GPIO_SSC_DOUT;

+

+ // writing algorithm:

+ // a high bit consists of a field off for 1ms and field on for 1ms

+ // a low bit consists of a field off for 0.3ms and field on for 1.7ms

+ // initiate a charge time of 50ms (field on) then immediately start writing bits

+ // start by writing 0xBB (keyword) and 0xEB (password)

+ // then write 80 bits of data (or 64 bit data + 16 bit crc if you prefer)

+ // finally end with 0x0300 (write frame)

+ // all data is sent lsb firts

+ // finish with 15ms programming time

+

+ // modulate antenna

+ HIGH(GPIO_SSC_DOUT);

+ SpinDelay(50); // charge time

+

+ WriteTIbyte(0xbb); // keyword

+ WriteTIbyte(0xeb); // password

+ WriteTIbyte( (idlo )&0xff );

+ WriteTIbyte( (idlo>>8 )&0xff );

+ WriteTIbyte( (idlo>>16)&0xff );

+ WriteTIbyte( (idlo>>24)&0xff );

+ WriteTIbyte( (idhi )&0xff );

+ WriteTIbyte( (idhi>>8 )&0xff );

+ WriteTIbyte( (idhi>>16)&0xff );

+ WriteTIbyte( (idhi>>24)&0xff ); // data hi to lo

+ WriteTIbyte( (crc )&0xff ); // crc lo

+ WriteTIbyte( (crc>>8 )&0xff ); // crc hi

+ WriteTIbyte(0x00); // write frame lo

+ WriteTIbyte(0x03); // write frame hi

+ HIGH(GPIO_SSC_DOUT);

+ SpinDelay(50); // programming time

+

+ LED_A_OFF();

+

+ // get TI tag data into the buffer

+ AcquireTiType();

+

+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);

+ DbpString("Now use tiread to check");

}

void SimulateTagLowFrequency(int period, int gap, int ledcontrol)

{

}

void SimulateTagLowFrequency(int period, int gap, int ledcontrol)

{

- int i;

- uint8_t *tab = (uint8_t *)BigBuf;

-

- FpgaDownloadAndGo(FPGA_BITSTREAM_LF);

- FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_EDGE_DETECT);

-

- AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DOUT | GPIO_SSC_CLK;

-

- AT91C_BASE_PIOA->PIO_OER = GPIO_SSC_DOUT;

- AT91C_BASE_PIOA->PIO_ODR = GPIO_SSC_CLK;

-

-#define SHORT_COIL() LOW(GPIO_SSC_DOUT)

-#define OPEN_COIL() HIGH(GPIO_SSC_DOUT)

-

- i = 0;

- for(;;) {

- while(!(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_CLK)) {

- if(BUTTON_PRESS()) {

- DbpString("Stopped");

- return;

- }

- WDT_HIT();

- }

-

- if (ledcontrol)

- LED_D_ON();

-

- if(tab[i])

- OPEN_COIL();

- else

- SHORT_COIL();

-

- if (ledcontrol)

- LED_D_OFF();

-

- while(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_CLK) {

- if(BUTTON_PRESS()) {

- DbpString("Stopped");

- return;

- }

- WDT_HIT();

- }

-

- i++;

- if(i == period) {

- i = 0;

- if (gap) {

- SHORT_COIL();

- SpinDelayUs(gap);

- }

+ int i;

+ uint8_t *tab = BigBuf_get_addr();

+

+ FpgaDownloadAndGo(FPGA_BITSTREAM_LF);

+ FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_EDGE_DETECT);

+

+ AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DOUT | GPIO_SSC_CLK;

+

+ AT91C_BASE_PIOA->PIO_OER = GPIO_SSC_DOUT;

+ AT91C_BASE_PIOA->PIO_ODR = GPIO_SSC_CLK;

+

+ #define SHORT_COIL() LOW(GPIO_SSC_DOUT)

+ #define OPEN_COIL() HIGH(GPIO_SSC_DOUT)

+

+ i = 0;

+ for(;;) {

+ //wait until SSC_CLK goes HIGH

+ while(!(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_CLK)) {

+ if(BUTTON_PRESS() || (usb_poll_validate_length() )) {

+ DbpString("Stopped");

+ return;

+ }

+ WDT_HIT();

+ }

+ if (ledcontrol)

+ LED_D_ON();

+

+ if(tab[i])

+ OPEN_COIL();

+ else

+ SHORT_COIL();

+

+ if (ledcontrol)

+ LED_D_OFF();

+ //wait until SSC_CLK goes LOW

+ while(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_CLK) {

+ if(BUTTON_PRESS()) {

+ DbpString("Stopped");

+ return;

+ }

+ WDT_HIT();

+ }

+

+ i++;

+ if(i == period) {

+

+ i = 0;

+ if (gap) {

+ SHORT_COIL();

+ SpinDelayUs(gap);

+ }

}

#define DEBUG_FRAME_CONTENTS 1

}

#define DEBUG_FRAME_CONTENTS 1

{

}

{

}

-// compose fc/8 fc/10 waveform

-static void fc(int c, int *n) {

- uint8_t *dest = (uint8_t *)BigBuf;

- int idx;

-

- // for when we want an fc8 pattern every 4 logical bits

- if(c==0) {

- dest[((*n)++)]=1;

- dest[((*n)++)]=0;

- }

- // an fc/8 encoded bit is a bit pattern of 11000000 x6 = 48 samples

- if(c==8) {

- for (idx=0; idx<6; idx++) {

- dest[((*n)++)]=1;

- dest[((*n)++)]=0;

- }

-

- // an fc/10 encoded bit is a bit pattern of 1110000000 x5 = 50 samples

- if(c==10) {

- for (idx=0; idx<5; idx++) {

- dest[((*n)++)]=1;

- dest[((*n)++)]=0;

- }

+// compose fc/8 fc/10 waveform (FSK2)

+static void fc(int c, int *n)

+{

+ uint8_t *dest = BigBuf_get_addr();

+ int idx;

+

+ // for when we want an fc8 pattern every 4 logical bits

+ if(c==0) {

+ dest[((*n)++)]=1;

+ dest[((*n)++)]=0;

+ }

+

+ // an fc/8 encoded bit is a bit pattern of 11110000 x6 = 48 samples

+ if(c==8) {

+ for (idx=0; idx<6; idx++) {

+ dest[((*n)++)]=1;

+ dest[((*n)++)]=0;

+ }

+

+ // an fc/10 encoded bit is a bit pattern of 1111100000 x5 = 50 samples

+ if(c==10) {

+ for (idx=0; idx<5; idx++) {

+ dest[((*n)++)]=1;

+ dest[((*n)++)]=0;

+ }

+}

+// compose fc/X fc/Y waveform (FSKx)

+static void fcAll(uint8_t fc, int *n, uint8_t clock, uint16_t *modCnt)

+{

+ uint8_t *dest = BigBuf_get_addr();

+ uint8_t halfFC = fc/2;

+ uint8_t wavesPerClock = clock/fc;

+ uint8_t mod = clock % fc; //modifier

+ uint8_t modAdj = fc/mod; //how often to apply modifier

+ bool modAdjOk = !(fc % mod); //if (fc % mod==0) modAdjOk=TRUE;

+ // loop through clock - step field clock

+ for (uint8_t idx=0; idx < wavesPerClock; idx++){

+ // put 1/2 FC length 1's and 1/2 0's per field clock wave (to create the wave)

+ memset(dest+(*n), 0, fc-halfFC); //in case of odd number use extra here

+ memset(dest+(*n)+(fc-halfFC), 1, halfFC);

+ *n += fc;

+ }

+ if (mod>0) (*modCnt)++;

+ if ((mod>0) && modAdjOk){ //fsk2

+ if ((*modCnt % modAdj) == 0){ //if 4th 8 length wave in a rf/50 add extra 8 length wave

+ memset(dest+(*n), 0, fc-halfFC);

+ memset(dest+(*n)+(fc-halfFC), 1, halfFC);

+ *n += fc;

+ }

+ if (mod>0 && !modAdjOk){ //fsk1

+ memset(dest+(*n), 0, mod-(mod/2));

+ memset(dest+(*n)+(mod-(mod/2)), 1, mod/2);

+ *n += mod;

+ }

}

// prepare a waveform pattern in the buffer based on the ID given then

// simulate a HID tag until the button is pressed

void CmdHIDsimTAG(int hi, int lo, int ledcontrol)

{

}

// prepare a waveform pattern in the buffer based on the ID given then

// simulate a HID tag until the button is pressed

void CmdHIDsimTAG(int hi, int lo, int ledcontrol)

{

- int n=0, i=0;

- /*

- HID tag bitstream format

- The tag contains a 44bit unique code. This is sent out MSB first in sets of 4 bits

- A 1 bit is represented as 6 fc8 and 5 fc10 patterns

- A 0 bit is represented as 5 fc10 and 6 fc8 patterns

- A fc8 is inserted before every 4 bits

- A special start of frame pattern is used consisting a0b0 where a and b are neither 0

- nor 1 bits, they are special patterns (a = set of 12 fc8 and b = set of 10 fc10)

- */

-

- if (hi>0xFFF) {

- DbpString("Tags can only have 44 bits.");

- return;

- }

- fc(0,&n);

- // special start of frame marker containing invalid bit sequences

- fc(8, &n); fc(8, &n); // invalid

- fc(8, &n); fc(10, &n); // logical 0

- fc(10, &n); fc(10, &n); // invalid

- fc(8, &n); fc(10, &n); // logical 0

-

- WDT_HIT();

- // manchester encode bits 43 to 32

- for (i=11; i>=0; i--) {

- if ((i%4)==3) fc(0,&n);

- if ((hi>>i)&1) {

- fc(10, &n); fc(8, &n); // low-high transition

- } else {

- fc(8, &n); fc(10, &n); // high-low transition

- }

-

- WDT_HIT();

- // manchester encode bits 31 to 0

- for (i=31; i>=0; i--) {

- if ((i%4)==3) fc(0,&n);

- if ((lo>>i)&1) {

- fc(10, &n); fc(8, &n); // low-high transition

- } else {

- fc(8, &n); fc(10, &n); // high-low transition

- }

-

- if (ledcontrol)

- LED_A_ON();

+ int n=0, i=0;

+ /*

+ HID tag bitstream format

+ The tag contains a 44bit unique code. This is sent out MSB first in sets of 4 bits

+ A 1 bit is represented as 6 fc8 and 5 fc10 patterns

+ A 0 bit is represented as 5 fc10 and 6 fc8 patterns

+ A fc8 is inserted before every 4 bits

+ A special start of frame pattern is used consisting a0b0 where a and b are neither 0

+ nor 1 bits, they are special patterns (a = set of 12 fc8 and b = set of 10 fc10)

+ */

+

+ if (hi>0xFFF) {

+ DbpString("Tags can only have 44 bits. - USE lf simfsk for larger tags");

+ return;

+ }

+ fc(0,&n);

+ // special start of frame marker containing invalid bit sequences

+ fc(8, &n); fc(8, &n); // invalid

+ fc(8, &n); fc(10, &n); // logical 0

+ fc(10, &n); fc(10, &n); // invalid

+ fc(8, &n); fc(10, &n); // logical 0

+

+ WDT_HIT();

+ // manchester encode bits 43 to 32

+ for (i=11; i>=0; i--) {

+ if ((i%4)==3) fc(0,&n);

+ if ((hi>>i)&1) {

+ fc(10, &n); fc(8, &n); // low-high transition

+ } else {

+ fc(8, &n); fc(10, &n); // high-low transition

+ }

+

+ WDT_HIT();

+ // manchester encode bits 31 to 0

+ for (i=31; i>=0; i--) {

+ if ((i%4)==3) fc(0,&n);

+ if ((lo>>i)&1) {

+ fc(10, &n); fc(8, &n); // low-high transition

+ } else {

+ fc(8, &n); fc(10, &n); // high-low transition

+ }

+

+ if (ledcontrol)

+ LED_A_ON();

+ SimulateTagLowFrequency(n, 0, ledcontrol);

+

+ if (ledcontrol)

+ LED_A_OFF();

+}

+

+// prepare a waveform pattern in the buffer based on the ID given then

+// simulate a FSK tag until the button is pressed

+// arg1 contains fcHigh and fcLow, arg2 contains invert and clock

+void CmdFSKsimTAG(uint16_t arg1, uint16_t arg2, size_t size, uint8_t *BitStream)

+{

+ int ledcontrol=1;

+ int n=0, i=0;

+ uint8_t fcHigh = arg1 >> 8;

+ uint8_t fcLow = arg1 & 0xFF;

+ uint16_t modCnt = 0;

+ uint8_t clk = arg2 & 0xFF;

+ uint8_t invert = (arg2 >> 8) & 1;

+

+ for (i=0; i<size; i++){

+ if (BitStream[i] == invert){

+ fcAll(fcLow, &n, clk, &modCnt);

+ } else {

+ fcAll(fcHigh, &n, clk, &modCnt);

+ }

+ Dbprintf("Simulating with fcHigh: %d, fcLow: %d, clk: %d, invert: %d, n: %d",fcHigh, fcLow, clk, invert, n);

+ /*Dbprintf("DEBUG: First 32:");

+ uint8_t *dest = BigBuf_get_addr();

+ i=0;

+ Dbprintf("%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d", dest[i],dest[i+1],dest[i+2],dest[i+3],dest[i+4],dest[i+5],dest[i+6],dest[i+7],dest[i+8],dest[i+9],dest[i+10],dest[i+11],dest[i+12],dest[i+13],dest[i+14],dest[i+15]);

+ i+=16;

+ Dbprintf("%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d", dest[i],dest[i+1],dest[i+2],dest[i+3],dest[i+4],dest[i+5],dest[i+6],dest[i+7],dest[i+8],dest[i+9],dest[i+10],dest[i+11],dest[i+12],dest[i+13],dest[i+14],dest[i+15]);

+ */

+ if (ledcontrol)

+ LED_A_ON();

+

+ SimulateTagLowFrequency(n, 0, ledcontrol);

+

+ if (ledcontrol)

+ LED_A_OFF();

+}

+

+// compose ask waveform for one bit(ASK)

+static void askSimBit(uint8_t c, int *n, uint8_t clock, uint8_t manchester)

+{

+ uint8_t *dest = BigBuf_get_addr();

+ uint8_t halfClk = clock/2;

+ // c = current bit 1 or 0

+ if (manchester==1){

+ memset(dest+(*n), c, halfClk);

+ memset(dest+(*n) + halfClk, c^1, halfClk);

+ } else {

+ memset(dest+(*n), c, clock);

+ }

+ *n += clock;

+}

+

+static void biphaseSimBit(uint8_t c, int *n, uint8_t clock, uint8_t *phase)

+{

+ uint8_t *dest = BigBuf_get_addr();

+ uint8_t halfClk = clock/2;

+ if (c){

+ memset(dest+(*n), c ^ 1 ^ *phase, halfClk);

+ memset(dest+(*n) + halfClk, c ^ *phase, halfClk);

+ } else {

+ memset(dest+(*n), c ^ *phase, clock);

+ *phase ^= 1;

+ }

+}

+

+// args clock, ask/man or askraw, invert, transmission separator

+void CmdASKsimTag(uint16_t arg1, uint16_t arg2, size_t size, uint8_t *BitStream)

+{

+ int ledcontrol = 1;

+ int n=0, i=0;

+ uint8_t clk = (arg1 >> 8) & 0xFF;

+ uint8_t encoding = arg1 & 0xFF;

+ uint8_t separator = arg2 & 1;

+ uint8_t invert = (arg2 >> 8) & 1;

+

+ if (encoding==2){ //biphase

+ uint8_t phase=0;

+ for (i=0; i<size; i++){

+ biphaseSimBit(BitStream[i]^invert, &n, clk, &phase);

+ }

+ if (BitStream[0]==BitStream[size-1]){ //run a second set inverted to keep phase in check

+ for (i=0; i<size; i++){

+ biphaseSimBit(BitStream[i]^invert, &n, clk, &phase);

+ }

+ } else { // ask/manchester || ask/raw

+ for (i=0; i<size; i++){

+ askSimBit(BitStream[i]^invert, &n, clk, encoding);

+ }

+ if (encoding==0 && BitStream[0]==BitStream[size-1]){ //run a second set inverted (for biphase phase)

+ for (i=0; i<size; i++){

+ askSimBit(BitStream[i]^invert^1, &n, clk, encoding);

+ }

- SimulateTagLowFrequency(n, 0, ledcontrol);

+ if (separator==1) Dbprintf("sorry but separator option not yet available");

+

+ Dbprintf("Simulating with clk: %d, invert: %d, encoding: %d, separator: %d, n: %d",clk, invert, encoding, separator, n);

+ //DEBUG

+ //Dbprintf("First 32:");

+ //uint8_t *dest = BigBuf_get_addr();

+ //i=0;

+ //Dbprintf("%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d", dest[i],dest[i+1],dest[i+2],dest[i+3],dest[i+4],dest[i+5],dest[i+6],dest[i+7],dest[i+8],dest[i+9],dest[i+10],dest[i+11],dest[i+12],dest[i+13],dest[i+14],dest[i+15]);

+ //i+=16;

+ //Dbprintf("%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d", dest[i],dest[i+1],dest[i+2],dest[i+3],dest[i+4],dest[i+5],dest[i+6],dest[i+7],dest[i+8],dest[i+9],dest[i+10],dest[i+11],dest[i+12],dest[i+13],dest[i+14],dest[i+15]);

+

+ if (ledcontrol) LED_A_ON();

+ SimulateTagLowFrequency(n, 0, ledcontrol);

+ if (ledcontrol) LED_A_OFF();

+}

- if (ledcontrol)

- LED_A_OFF();

+//carrier can be 2,4 or 8

+static void pskSimBit(uint8_t waveLen, int *n, uint8_t clk, uint8_t *curPhase, bool phaseChg)

+{

+ uint8_t *dest = BigBuf_get_addr();

+ uint8_t halfWave = waveLen/2;

+ //uint8_t idx;

+ int i = 0;

+ if (phaseChg){

+ // write phase change

+ memset(dest+(*n), *curPhase^1, halfWave);

+ memset(dest+(*n) + halfWave, *curPhase, halfWave);

+ *n += waveLen;

+ *curPhase ^= 1;

+ i += waveLen;

+ }

+ //write each normal clock wave for the clock duration

+ for (; i < clk; i+=waveLen){

+ memset(dest+(*n), *curPhase, halfWave);

+ memset(dest+(*n) + halfWave, *curPhase^1, halfWave);

+ *n += waveLen;

+ }

+}

+

+// args clock, carrier, invert,

+void CmdPSKsimTag(uint16_t arg1, uint16_t arg2, size_t size, uint8_t *BitStream)

+{

+ int ledcontrol=1;

+ int n=0, i=0;

+ uint8_t clk = arg1 >> 8;

+ uint8_t carrier = arg1 & 0xFF;

+ uint8_t invert = arg2 & 0xFF;

+ uint8_t curPhase = 0;

+ for (i=0; i<size; i++){

+ if (BitStream[i] == curPhase){

+ pskSimBit(carrier, &n, clk, &curPhase, FALSE);

+ } else {

+ pskSimBit(carrier, &n, clk, &curPhase, TRUE);

+ }

+ Dbprintf("Simulating with Carrier: %d, clk: %d, invert: %d, n: %d",carrier, clk, invert, n);

+ //Dbprintf("DEBUG: First 32:");

+ //uint8_t *dest = BigBuf_get_addr();

+ //i=0;

+ //Dbprintf("%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d", dest[i],dest[i+1],dest[i+2],dest[i+3],dest[i+4],dest[i+5],dest[i+6],dest[i+7],dest[i+8],dest[i+9],dest[i+10],dest[i+11],dest[i+12],dest[i+13],dest[i+14],dest[i+15]);

+ //i+=16;

+ //Dbprintf("%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d", dest[i],dest[i+1],dest[i+2],dest[i+3],dest[i+4],dest[i+5],dest[i+6],dest[i+7],dest[i+8],dest[i+9],dest[i+10],dest[i+11],dest[i+12],dest[i+13],dest[i+14],dest[i+15]);

+

+ if (ledcontrol) LED_A_ON();

+ SimulateTagLowFrequency(n, 0, ledcontrol);

+ if (ledcontrol) LED_A_OFF();

}

// loop to get raw HID waveform then FSK demodulate the TAG ID from it

void CmdHIDdemodFSK(int findone, int *high, int *low, int ledcontrol)

{

}

// loop to get raw HID waveform then FSK demodulate the TAG ID from it

void CmdHIDdemodFSK(int findone, int *high, int *low, int ledcontrol)

{

- uint8_t *dest = (uint8_t *)BigBuf;

-

- size_t size=0; //, found=0;

- uint32_t hi2=0, hi=0, lo=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);

- if (size < 2000) continue;

- // FSK demodulator

-

- int bitLen = HIDdemodFSK(dest,size,&hi2,&hi,&lo);

-

- WDT_HIT();

-

- if (bitLen>0 && lo>0){

- // final loop, go over previously decoded manchester data and decode into usable tag ID

- // 111000 bit pattern represent start of frame, 01 pattern represents a 1 and 10 represents a 0

- if (hi2 != 0){ //extra large HID tags

- Dbprintf("TAG ID: %x%08x%08x (%d)",

- (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);

- }else { //standard HID tags <38 bits

- //Dbprintf("TAG ID: %x%08x (%d)",(unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF); //old print cmd

- uint8_t bitlen = 0;

- uint32_t fc = 0;

- uint32_t cardnum = 0;

- if (((hi>>5)&1)==1){//if bit 38 is set then < 37 bit format is used

- uint32_t lo2=0;

- lo2=(((hi & 31) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit

- uint8_t idx3 = 1;

- while(lo2>1){ //find last bit set to 1 (format len bit)

- lo2=lo2>>1;

- idx3++;

- }

- bitlen =idx3+19;

- fc =0;

- cardnum=0;

- if(bitlen==26){

- cardnum = (lo>>1)&0xFFFF;

- fc = (lo>>17)&0xFF;

- }

- if(bitlen==37){

- cardnum = (lo>>1)&0x7FFFF;

- fc = ((hi&0xF)<<12)|(lo>>20);

- }

- if(bitlen==34){

- cardnum = (lo>>1)&0xFFFF;

- fc= ((hi&1)<<15)|(lo>>17);

- }

- if(bitlen==35){

- cardnum = (lo>>1)&0xFFFFF;

- fc = ((hi&1)<<11)|(lo>>21);

- }

- else { //if bit 38 is not set then 37 bit format is used

- bitlen= 37;

- fc =0;

- cardnum=0;

- if(bitlen==37){

- cardnum = (lo>>1)&0x7FFFF;

- fc = ((hi&0xF)<<12)|(lo>>20);

- }

- //Dbprintf("TAG ID: %x%08x (%d)",

- // (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);

- Dbprintf("TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d",

- (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF,

- (unsigned int) bitlen, (unsigned int) fc, (unsigned int) cardnum);

- }

- if (findone){

- if (ledcontrol) LED_A_OFF();

- return;

- }

- // reset

- hi2 = hi = lo = 0;

- }

- WDT_HIT();

- }

- DbpString("Stopped");

- if (ledcontrol) LED_A_OFF();

+ uint8_t *dest = BigBuf_get_addr();

+ //const size_t sizeOfBigBuff = BigBuf_max_traceLen();

+ size_t size;

+ uint32_t hi2=0, hi=0, lo=0;

+ int idx=0;

+ // Configure to go in 125Khz listen mode

+ LFSetupFPGAForADC(95, true);

+

+ //clear read buffer

+ BigBuf_Clear_keep_EM();

+

+ while(!BUTTON_PRESS() && !usb_poll_validate_length()) {

+

+ WDT_HIT();

+ if (ledcontrol) LED_A_ON();

+

+ DoAcquisition_default(-1,true);

+ // FSK demodulator

+ //size = sizeOfBigBuff; //variable size will change after demod so re initialize it before use

+ size = 50*128*2; //big enough to catch 2 sequences of largest format

+ idx = HIDdemodFSK(dest, &size, &hi2, &hi, &lo);

+

+ if (idx>0 && lo>0 && (size==96 || size==192)){

+ // go over previously decoded manchester data and decode into usable tag ID

+ if (hi2 != 0){ //extra large HID tags 88/192 bits

+ Dbprintf("TAG ID: %x%08x%08x (%d)",

+ (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);

+ }else { //standard HID tags 44/96 bits

+ //Dbprintf("TAG ID: %x%08x (%d)",(unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF); //old print cmd

+ uint8_t bitlen = 0;

+ uint32_t fc = 0;

+ uint32_t cardnum = 0;

+ if (((hi>>5)&1) == 1){//if bit 38 is set then < 37 bit format is used

+ uint32_t lo2=0;

+ lo2=(((hi & 31) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit

+ uint8_t idx3 = 1;

+ while(lo2 > 1){ //find last bit set to 1 (format len bit)

+ lo2=lo2 >> 1;

+ idx3++;

+ }

+ bitlen = idx3+19;

+ fc =0;

+ cardnum=0;

+ if(bitlen == 26){

+ cardnum = (lo>>1)&0xFFFF;

+ fc = (lo>>17)&0xFF;

+ }

+ if(bitlen == 37){

+ cardnum = (lo>>1)&0x7FFFF;

+ fc = ((hi&0xF)<<12)|(lo>>20);

+ }

+ if(bitlen == 34){

+ cardnum = (lo>>1)&0xFFFF;

+ fc= ((hi&1)<<15)|(lo>>17);

+ }

+ if(bitlen == 35){

+ cardnum = (lo>>1)&0xFFFFF;

+ fc = ((hi&1)<<11)|(lo>>21);

+ }

+ else { //if bit 38 is not set then 37 bit format is used

+ bitlen= 37;

+ fc =0;

+ cardnum=0;

+ if(bitlen==37){

+ cardnum = (lo>>1)&0x7FFFF;

+ fc = ((hi&0xF)<<12)|(lo>>20);

+ }

+ //Dbprintf("TAG ID: %x%08x (%d)",

+ // (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);

+ Dbprintf("TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d",

+ (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF,

+ (unsigned int) bitlen, (unsigned int) fc, (unsigned int) cardnum);

+ }

+ if (findone){

+ if (ledcontrol) LED_A_OFF();

+ *high = hi;

+ *low = lo;

+ return;

+ }

+ // reset

+ }

+ hi2 = hi = lo = idx = 0;

+ WDT_HIT();

+ }

+ DbpString("Stopped");

+ if (ledcontrol) LED_A_OFF();

+}

+

+// loop to get raw HID waveform then FSK demodulate the TAG ID from it

+void CmdAWIDdemodFSK(int findone, int *high, int *low, int ledcontrol)

+{

+ uint8_t *dest = BigBuf_get_addr();

+ size_t size;

+ int idx=0;

+ //clear read buffer

+ BigBuf_Clear_keep_EM();

+ // Configure to go in 125Khz listen mode

+ LFSetupFPGAForADC(95, true);

+

+ while(!BUTTON_PRESS() && !usb_poll_validate_length()) {

+

+ WDT_HIT();

+ if (ledcontrol) LED_A_ON();

+

+ DoAcquisition_default(-1,true);

+ // FSK demodulator

+ size = 50*128*2; //big enough to catch 2 sequences of largest format

+ idx = AWIDdemodFSK(dest, &size);

+

+ if (idx<=0 || size!=96) continue;

+ // Index map

+ // 0 10 20 30 40 50 60

+ // | | | | | | |

+ // 01234567 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 - to 96

+ // -----------------------------------------------------------------------------

+ // 00000001 000 1 110 1 101 1 011 1 101 1 010 0 000 1 000 1 010 0 001 0 110 1 100 0 000 1 000 1

+ // premable bbb o bbb o bbw o fff o fff o ffc o ccc o ccc o ccc o ccc o ccc o wxx o xxx o xxx o - to 96

+ // |---26 bit---| |-----117----||-------------142-------------|

+ // b = format bit len, o = odd parity of last 3 bits

+ // f = facility code, c = card number

+ // w = wiegand parity

+ // (26 bit format shown)

+

+ //get raw ID before removing parities

+ uint32_t rawLo = bytebits_to_byte(dest+idx+64,32);

+ uint32_t rawHi = bytebits_to_byte(dest+idx+32,32);

+ uint32_t rawHi2 = bytebits_to_byte(dest+idx,32);

+

+ size = removeParity(dest, idx+8, 4, 1, 88);

+ if (size != 66) continue;

+ // ok valid card found!

+

+ // Index map

+ // 0 10 20 30 40 50 60

+ // | | | | | | |

+ // 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456

+ // -----------------------------------------------------------------------------

+ // 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000

+ // bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

+ // |26 bit| |-117--| |-----142------|

+ // b = format bit len, o = odd parity of last 3 bits

+ // f = facility code, c = card number

+ // w = wiegand parity

+ // (26 bit format shown)

+

+ uint32_t fc = 0;

+ uint32_t cardnum = 0;

+ uint32_t code1 = 0;

+ uint32_t code2 = 0;

+ uint8_t fmtLen = bytebits_to_byte(dest,8);

+ if (fmtLen==26){

+ fc = bytebits_to_byte(dest+9, 8);

+ cardnum = bytebits_to_byte(dest+17, 16);

+ code1 = bytebits_to_byte(dest+8,fmtLen);

+ Dbprintf("AWID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi2, rawHi, rawLo);

+ } else {

+ cardnum = bytebits_to_byte(dest+8+(fmtLen-17), 16);

+ if (fmtLen>32){

+ code1 = bytebits_to_byte(dest+8,fmtLen-32);

+ code2 = bytebits_to_byte(dest+8+(fmtLen-32),32);

+ Dbprintf("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, code2, rawHi2, rawHi, rawLo);

+ } else{

+ code1 = bytebits_to_byte(dest+8,fmtLen);

+ Dbprintf("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);

+ }

+ if (findone){

+ if (ledcontrol) LED_A_OFF();

+ return;

+ }

+ // reset

+ idx = 0;

+ WDT_HIT();

+ }

+ DbpString("Stopped");

+ if (ledcontrol) LED_A_OFF();

}

void CmdEM410xdemod(int findone, int *high, int *low, int ledcontrol)

{

}

void CmdEM410xdemod(int findone, int *high, int *low, int ledcontrol)

{

- uint8_t *dest = (uint8_t *)BigBuf;

-

- size_t size=0; //, found=0;

- uint32_t bitLen=0;

- int clk=0, invert=0, errCnt=0;

- uint64_t lo=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);

- if (size < 2000) continue;

- // FSK demodulator

- //int askmandemod(uint8_t *BinStream,uint32_t *BitLen,int *clk, int *invert);

- bitLen=size;

- //Dbprintf("DEBUG: Buffer got");

- errCnt = askmandemod(dest,&bitLen,&clk,&invert); //HIDdemodFSK(dest,size,&hi2,&hi,&lo);

- //Dbprintf("DEBUG: ASK Got");

- WDT_HIT();

-

- if (errCnt>=0){

- lo = Em410xDecode(dest,bitLen);

- //Dbprintf("DEBUG: EM GOT");

- //printEM410x(lo);

- if (lo>0){

- Dbprintf("EM TAG ID: %02x%08x - (%05d_%03d_%08d)",(uint32_t)(lo>>32),(uint32_t)lo,(uint32_t)(lo&0xFFFF),(uint32_t)((lo>>16LL) & 0xFF),(uint32_t)(lo & 0xFFFFFF));

- }

- if (findone){

- if (ledcontrol) LED_A_OFF();

- return;

- }

- } else{

- //Dbprintf("DEBUG: No Tag");

- }

- WDT_HIT();

- lo = 0;

- clk=0;

- invert=0;

- errCnt=0;

- size=0;

- //SpinDelay(50);

- }

- DbpString("Stopped");

- if (ledcontrol) LED_A_OFF();

+ uint8_t *dest = BigBuf_get_addr();

+

+ size_t size=0, idx=0;

+ int clk=0, invert=0, errCnt=0, maxErr=20;

+ uint32_t hi=0;

+ uint64_t lo=0;

+ //clear read buffer

+ BigBuf_Clear_keep_EM();

+ // Configure to go in 125Khz listen mode

+ LFSetupFPGAForADC(95, true);

+

+ while(!BUTTON_PRESS() && !usb_poll_validate_length()) {

+

+ WDT_HIT();

+ if (ledcontrol) LED_A_ON();

+

+ DoAcquisition_default(-1,true);

+ size = BigBuf_max_traceLen();

+ //askdemod and manchester decode

+ if (size > 16385) size = 16385; //big enough to catch 2 sequences of largest format

+ errCnt = askdemod(dest, &size, &clk, &invert, maxErr, 0, 1);

+ WDT_HIT();

+

+ if (errCnt<0) continue;

+

+ errCnt = Em410xDecode(dest, &size, &idx, &hi, &lo);

+ if (errCnt){

+ if (size>64){

+ Dbprintf("EM XL TAG ID: %06x%08x%08x - (%05d_%03d_%08d)",

+ hi,

+ (uint32_t)(lo>>32),

+ (uint32_t)lo,

+ (uint32_t)(lo&0xFFFF),

+ (uint32_t)((lo>>16LL) & 0xFF),

+ (uint32_t)(lo & 0xFFFFFF));

+ } else {

+ Dbprintf("EM TAG ID: %02x%08x - (%05d_%03d_%08d)",

+ (uint32_t)(lo>>32),

+ (uint32_t)lo,

+ (uint32_t)(lo&0xFFFF),

+ (uint32_t)((lo>>16LL) & 0xFF),

+ (uint32_t)(lo & 0xFFFFFF));

+ }

+

+ if (findone){

+ if (ledcontrol) LED_A_OFF();

+ *high=lo>>32;

+ *low=lo & 0xFFFFFFFF;

+ return;

+ }

+ WDT_HIT();

+ hi = lo = size = idx = 0;

+ clk = invert = errCnt = 0;

+ }

+ DbpString("Stopped");

+ if (ledcontrol) LED_A_OFF();

}

void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol)

{

}

void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol)

{

- uint8_t *dest = (uint8_t *)BigBuf;

- int idx=0;

- uint32_t code=0, code2=0;

- uint8_t version=0;

- uint8_t facilitycode=0;

- uint16_t number=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);

- //fskdemod and get start index

- WDT_HIT();

- idx = IOdemodFSK(dest,sizeof(BigBuf));

- if (idx>0){

- //valid tag found

-

- //Index map

- //0 10 20 30 40 50 60

- //| | | | | | |

- //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23

- //-----------------------------------------------------------------------------

- //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11

- //

- //XSF(version)facility:codeone+codetwo

- //Handle the data

- if(findone){ //only print binary if we are doing one

- Dbprintf("%d%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],dest[idx+8]);

- Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+9], dest[idx+10],dest[idx+11],dest[idx+12],dest[idx+13],dest[idx+14],dest[idx+15],dest[idx+16],dest[idx+17]);

- Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+18],dest[idx+19],dest[idx+20],dest[idx+21],dest[idx+22],dest[idx+23],dest[idx+24],dest[idx+25],dest[idx+26]);

- Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+27],dest[idx+28],dest[idx+29],dest[idx+30],dest[idx+31],dest[idx+32],dest[idx+33],dest[idx+34],dest[idx+35]);

- Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+36],dest[idx+37],dest[idx+38],dest[idx+39],dest[idx+40],dest[idx+41],dest[idx+42],dest[idx+43],dest[idx+44]);

- Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+45],dest[idx+46],dest[idx+47],dest[idx+48],dest[idx+49],dest[idx+50],dest[idx+51],dest[idx+52],dest[idx+53]);

- Dbprintf("%d%d%d%d%d%d%d%d %d%d",dest[idx+54],dest[idx+55],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);

- version = bytebits_to_byte(dest+idx+27,8); //14,4

- facilitycode = bytebits_to_byte(dest+idx+18,8) ;

- number = (bytebits_to_byte(dest+idx+36,8)<<8)|(bytebits_to_byte(dest+idx+45,8)); //36,9

-

- Dbprintf("XSF(%02d)%02x:%05d (%08x%08x)",version,facilitycode,number,code,code2);

- // if we're only looking for one tag

- if (findone){

- if (ledcontrol) LED_A_OFF();

- //LED_A_OFF();

- return;

- }

- code=code2=0;

- version=facilitycode=0;

- number=0;

- idx=0;

- }

- WDT_HIT();

- }

- DbpString("Stopped");

- if (ledcontrol) LED_A_OFF();

+ uint8_t *dest = BigBuf_get_addr();

+ int idx=0;

+ uint32_t code=0, code2=0;

+ uint8_t version=0;

+ uint8_t facilitycode=0;

+ uint16_t number=0;

+ //clear read buffer

+ BigBuf_Clear_keep_EM();

+ // Configure to go in 125Khz listen mode

+ LFSetupFPGAForADC(95, true);

+

+ while(!BUTTON_PRESS() && !usb_poll_validate_length()) {

+ WDT_HIT();

+ if (ledcontrol) LED_A_ON();

+ DoAcquisition_default(-1,true);

+ //fskdemod and get start index

+ WDT_HIT();

+ idx = IOdemodFSK(dest, BigBuf_max_traceLen());

+ if (idx<0) continue;

+ //valid tag found

+

+ //Index map

+ //0 10 20 30 40 50 60

+ //| | | | | | |

+ //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23

+ //-----------------------------------------------------------------------------

+ //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11

+ //

+ //XSF(version)facility:codeone+codetwo

+ //Handle the data

+ if(findone){ //only print binary if we are doing one

+ Dbprintf("%d%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],dest[idx+8]);

+ Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+9], dest[idx+10],dest[idx+11],dest[idx+12],dest[idx+13],dest[idx+14],dest[idx+15],dest[idx+16],dest[idx+17]);

+ Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+18],dest[idx+19],dest[idx+20],dest[idx+21],dest[idx+22],dest[idx+23],dest[idx+24],dest[idx+25],dest[idx+26]);

+ Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+27],dest[idx+28],dest[idx+29],dest[idx+30],dest[idx+31],dest[idx+32],dest[idx+33],dest[idx+34],dest[idx+35]);

+ Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+36],dest[idx+37],dest[idx+38],dest[idx+39],dest[idx+40],dest[idx+41],dest[idx+42],dest[idx+43],dest[idx+44]);

+ Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+45],dest[idx+46],dest[idx+47],dest[idx+48],dest[idx+49],dest[idx+50],dest[idx+51],dest[idx+52],dest[idx+53]);

+ Dbprintf("%d%d%d%d%d%d%d%d %d%d",dest[idx+54],dest[idx+55],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);

+ version = bytebits_to_byte(dest+idx+27,8); //14,4

+ facilitycode = bytebits_to_byte(dest+idx+18,8);

+ number = (bytebits_to_byte(dest+idx+36,8)<<8)|(bytebits_to_byte(dest+idx+45,8)); //36,9

+

+ Dbprintf("XSF(%02d)%02x:%05d (%08x%08x)",version,facilitycode,number,code,code2);

+ // if we're only looking for one tag

+ if (findone){

+ if (ledcontrol) LED_A_OFF();

+ //LED_A_OFF();

+ *high=code;

+ *low=code2;

+ return;

+ }

+ code=code2=0;

+ version=facilitycode=0;

+ number=0;

+ idx=0;

+

+ WDT_HIT();

+ }

+ DbpString("Stopped");

+ if (ledcontrol) LED_A_OFF();

}

/*------------------------------

}

/*------------------------------

- * T5555/T5557/T5567 routines

+ * T5555/T5557/T5567/T5577 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

+ * NOTE: T55x7/T5555 configuration register definitions moved to protocols.h

+ *

+ * Relevant communication times in microsecond

* To compensate antenna falling times shorten the write times

* and enlarge the gap ones.

* To compensate antenna falling times shorten the write times

* and enlarge the gap ones.

+ * Q5 tags seems to have issues when these values changes.

*/

-#define START_GAP 250

-#define WRITE_GAP 160

-#define WRITE_0 144 // 192

-#define WRITE_1 400 // 432 for T55x7; 448 for E5550

+#define START_GAP 31*8 // was 250 // SPEC: 1*8 to 50*8 - typ 15*8 (or 15fc)

+#define WRITE_GAP 20*8 // was 160 // SPEC: 1*8 to 20*8 - typ 10*8 (or 10fc)

+#define WRITE_0 18*8 // was 144 // SPEC: 16*8 to 32*8 - typ 24*8 (or 24fc)

+#define WRITE_1 50*8 // was 400 // SPEC: 48*8 to 64*8 - typ 56*8 (or 56fc) 432 for T55x7; 448 for E5550

+#define READ_GAP 15*8

+

+void TurnReadLFOn(int delay) {

+ FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);

+ // Give it a bit of time for the resonant antenna to settle.

+ SpinDelayUs(delay); //155*8 //50*8

+}

// 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);

+void T55xxWriteBit(int bit) {

+ if (!bit)

+ TurnReadLFOn(WRITE_0);

+ else

+ TurnReadLFOn(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; //enio adjustment 12/10/14

- uint32_t 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);

-}

+// Send T5577 reset command then read stream (see if we can identify the start of the stream)

+void T55xxResetRead(void) {

+ LED_A_ON();

+ //clear buffer now so it does not interfere with timing later

+ BigBuf_Clear_keep_EM();

-// 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; //enio adjustment 12/10/14

- uint32_t 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!");

+ // Set up FPGA, 125kHz

+ LFSetupFPGAForADC(95, true);

+

+ // Trigger T55x7 in mode.

+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);

+ SpinDelayUs(START_GAP);

+

+ // reset tag - op code 00

+ T55xxWriteBit(0);

+

+ // Turn field on to read the response

+ TurnReadLFOn(READ_GAP);

+

+ // Acquisition

+ doT55x7Acquisition(BigBuf_max_traceLen());

+

+ // Turn the field off

+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off

+ cmd_send(CMD_ACK,0,0,0,0,0);

+ LED_A_OFF();

}

-// 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!");

+// Write one card block in page 0, no lock

+void T55xxWriteBlockExt(uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t arg) {

+ LED_A_ON();

+ bool PwdMode = arg & 0x1;

+ uint8_t Page = (arg & 0x2)>>1;

+ uint32_t i = 0;

+

+ // Set up FPGA, 125kHz

+ LFSetupFPGAForADC(95, true);

+

+ // Trigger T55x7 in mode.

+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);

+ SpinDelayUs(START_GAP);

+

+ // Opcode 10

+ T55xxWriteBit(1);

+ T55xxWriteBit(Page); //Page 0

+ if (PwdMode){

+ // Send Pwd

+ for (i = 0x80000000; i != 0; i >>= 1)

+ T55xxWriteBit(Pwd & i);

+ }

+ // Send Lock bit

+ T55xxWriteBit(0);

+

+ // Send Data

+ for (i = 0x80000000; i != 0; i >>= 1)

+ T55xxWriteBit(Data & i);

+

+ // Send Block number

+ for (i = 0x04; i != 0; i >>= 1)

+ T55xxWriteBit(Block & i);

+

+ // Perform write (nominal is 5.6 ms for T55x7 and 18ms for E5550,

+ // so wait a little more)

+ TurnReadLFOn(20 * 1000);

+ //could attempt to do a read to confirm write took

+ // as the tag should repeat back the new block

+ // until it is reset, but to confirm it we would

+ // need to know the current block 0 config mode

+

+ // turn field off

+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);

+ LED_A_OFF();

}

-/*-------------- 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!");

+// Write one card block in page 0, no lock

+void T55xxWriteBlock(uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t arg) {

+ T55xxWriteBlockExt(Data, Block, Pwd, arg);

+ cmd_send(CMD_ACK,0,0,0,0,0);

}

-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!");

+// Read one card block in page [page]

+void T55xxReadBlock(uint16_t arg0, uint8_t Block, uint32_t Pwd) {

+ LED_A_ON();

+ bool PwdMode = arg0 & 0x1;

+ uint8_t Page = (arg0 & 0x2) >> 1;

+ uint32_t i = 0;

+ bool RegReadMode = (Block == 0xFF);

+

+ //clear buffer now so it does not interfere with timing later

+ BigBuf_Clear_ext(false);

+

+ //make sure block is at max 7

+ Block &= 0x7;

+

+ // Set up FPGA, 125kHz to power up the tag

+ LFSetupFPGAForADC(95, true);

+

+ // Trigger T55x7 Direct Access Mode with start gap

+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);

+ SpinDelayUs(START_GAP);

+

+ // Opcode 1[page]

+ T55xxWriteBit(1);

+ T55xxWriteBit(Page); //Page 0

+

+ if (PwdMode){

+ // Send Pwd

+ for (i = 0x80000000; i != 0; i >>= 1)

+ T55xxWriteBit(Pwd & i);

+ }

+ // Send a zero bit separation

+ T55xxWriteBit(0);

+

+ // Send Block number (if direct access mode)

+ if (!RegReadMode)

+ for (i = 0x04; i != 0; i >>= 1)

+ T55xxWriteBit(Block & i);

+

+ // Turn field on to read the response

+ TurnReadLFOn(READ_GAP);

+

+ // Acquisition

+ doT55x7Acquisition(12000);

+

+ // Turn the field off

+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off

+ cmd_send(CMD_ACK,0,0,0,0,0);

+ LED_A_OFF();

}

-// Define 9bit header for EM410x tags

-#define EM410X_HEADER 0x1FF

-#define EM410X_ID_LENGTH 40

+void T55xxWakeUp(uint32_t Pwd){

+ LED_B_ON();

+ uint32_t i = 0;

+

+ // Set up FPGA, 125kHz

+ LFSetupFPGAForADC(95, true);

+

+ // Trigger T55x7 Direct Access Mode

+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);

+ SpinDelayUs(START_GAP);

+

+ // Opcode 10

+ T55xxWriteBit(1);

+ T55xxWriteBit(0); //Page 0

-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);

-}

+ // Send Pwd

+ for (i = 0x80000000; i != 0; i >>= 1)

+ T55xxWriteBit(Pwd & i);

-// 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!");

+ // Turn and leave field on to let the begin repeating transmission

+ TurnReadLFOn(20*1000);

}

+/*-------------- Cloning routines -----------*/

-#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(i < GraphTraceLen)

- {

- if (GraphBuffer[i-1] > GraphBuffer[i]) dir=0;

- else dir = 1;

- }

- if(bitidx==255)

- bitidx=0;

- warnings = 0;

- if(num_blocks == 4) break;

- }

- memcpy(outBlocks, Blocks, 16*num_blocks);

- return num_blocks;

+void WriteT55xx(uint32_t *blockdata, uint8_t startblock, uint8_t numblocks) {

+ // write last block first and config block last (if included)

+ for (uint8_t i = numblocks+startblock; i > startblock; i--) {

+ T55xxWriteBlockExt(blockdata[i-1],i-1,0,0);

+ }

}

-int IsBlock0PCF7931(uint8_t *Block) {

- // Assume RFU means 0 :)

- if((memcmp(Block, "\x00\x00\x00\x00\x00\x00\x00\x01", 8) == 0) && memcmp(Block+9, "\x00\x00\x00\x00\x00\x00\x00", 7) == 0) // PAC enabled

- return 1;

- if((memcmp(Block+9, "\x00\x00\x00\x00\x00\x00\x00", 7) == 0) && Block[7] == 0) // PAC disabled, can it *really* happen ?

- return 1;

- return 0;

+// Copy HID id to card and setup block 0 config

+void CopyHIDtoT55x7(uint32_t hi2, uint32_t hi, uint32_t lo, uint8_t longFMT) {

+ uint32_t data[] = {0,0,0,0,0,0,0};

+ uint8_t 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;

+ // load preamble (1D) & long format identifier (9E manchester encoded)

+ data[1] = 0x1D96A900 | (manchesterEncode2Bytes((hi2 >> 16) & 0xF) & 0xFF);

+ // load raw id from hi2, hi, lo to data blocks (manchester encoded)

+ data[2] = manchesterEncode2Bytes(hi2 & 0xFFFF);

+ data[3] = manchesterEncode2Bytes(hi >> 16);

+ data[4] = manchesterEncode2Bytes(hi & 0xFFFF);

+ data[5] = manchesterEncode2Bytes(lo >> 16);

+ data[6] = manchesterEncode2Bytes(lo & 0xFFFF);

+ } 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;

+ // load preamble

+ data[1] = 0x1D000000 | (manchesterEncode2Bytes(hi) & 0xFFFFFF);

+ data[2] = manchesterEncode2Bytes(lo >> 16);

+ data[3] = manchesterEncode2Bytes(lo & 0xFFFF);

+ }

+ // load chip config block

+ data[0] = T55x7_BITRATE_RF_50 | T55x7_MODULATION_FSK2a | last_block << T55x7_MAXBLOCK_SHIFT;

+

+ //TODO add selection of chip for Q5 or T55x7

+ // data[0] = (((50-2)/2)<<T5555_BITRATE_SHIFT) | T5555_MODULATION_FSK2 | T5555_INVERT_OUTPUT | last_block << T5555_MAXBLOCK_SHIFT;

+

+ LED_D_ON();

+ // Program the data blocks for supplied ID

+ // and the block 0 for HID format

+ WriteT55xx(data, 0, last_block+1);

+

+ LED_D_OFF();

+

+ DbpString("DONE!");

}

-int IsBlock1PCF7931(uint8_t *Block) {

- // Assume RFU means 0 :)

- if(Block[10] == 0 && Block[11] == 0 && Block[12] == 0 && Block[13] == 0)

- if((Block[14] & 0x7f) <= 9 && Block[15] <= 9)

- return 1;

+void CopyIOtoT55x7(uint32_t hi, uint32_t lo) {

+ uint32_t data[] = {T55x7_BITRATE_RF_64 | T55x7_MODULATION_FSK2a | (2 << T55x7_MAXBLOCK_SHIFT), hi, lo};

+ //TODO add selection of chip for Q5 or T55x7

+ // data[0] = (((64-2)/2)<<T5555_BITRATE_SHIFT) | T5555_MODULATION_FSK2 | T5555_INVERT_OUTPUT | 2 << T5555_MAXBLOCK_SHIFT;

- return 0;

+ LED_D_ON();

+ // Program the data blocks for supplied ID

+ // and the block 0 config

+ WriteT55xx(data, 0, 3);

+

+ LED_D_OFF();

+

+ DbpString("DONE!");

}

-#define ALLOC 16

-

-void ReadPCF7931() {

- uint8_t Blocks[8][17];

- uint8_t tmpBlocks[4][16];

- int i, j, ind, ind2, n;

- int num_blocks = 0;

- int max_blocks = 8;

- int ident = 0;

- int error = 0;

- int tries = 0;

-

- memset(Blocks, 0, 8*17*sizeof(uint8_t));

-

- do {

- memset(tmpBlocks, 0, 4*16*sizeof(uint8_t));

- n = DemodPCF7931((uint8_t**)tmpBlocks);

- if(!n)

- error++;

- if(error==10 && num_blocks == 0) {

- Dbprintf("Error, no tag or bad tag");

- return;

- }

- else if (tries==20 || error==10) {

- Dbprintf("Error reading the tag");

- Dbprintf("Here is the partial content");

- goto end;

- }

-

- for(i=0; i<n; i++)

- Dbprintf("(dbg) %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x",

- tmpBlocks[i][0], tmpBlocks[i][1], tmpBlocks[i][2], tmpBlocks[i][3], tmpBlocks[i][4], tmpBlocks[i][5], tmpBlocks[i][6], tmpBlocks[i][7],

- tmpBlocks[i][8], tmpBlocks[i][9], tmpBlocks[i][10], tmpBlocks[i][11], tmpBlocks[i][12], tmpBlocks[i][13], tmpBlocks[i][14], tmpBlocks[i][15]);

- if(!ident) {

- for(i=0; i<n; i++) {

- if(IsBlock0PCF7931(tmpBlocks[i])) {

- // Found block 0 ?

- if(i < n-1 && IsBlock1PCF7931(tmpBlocks[i+1])) {

- // Found block 1!

- // \o/

- ident = 1;

- memcpy(Blocks[0], tmpBlocks[i], 16);

- Blocks[0][ALLOC] = 1;

- memcpy(Blocks[1], tmpBlocks[i+1], 16);

- Blocks[1][ALLOC] = 1;

- max_blocks = max((Blocks[1][14] & 0x7f), Blocks[1][15]) + 1;

- // Debug print

- Dbprintf("(dbg) Max blocks: %d", max_blocks);

- num_blocks = 2;

- // Handle following blocks

- for(j=i+2, ind2=2; j!=i; j++, ind2++, num_blocks++) {

- if(j==n) j=0;

- if(j==i) break;

- memcpy(Blocks[ind2], tmpBlocks[j], 16);

- Blocks[ind2][ALLOC] = 1;

- }

- break;

- }

- else {

- for(i=0; i<n; i++) { // Look for identical block in known blocks

- if(memcmp(tmpBlocks[i], "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 16)) { // Block is not full of 00

- for(j=0; j<max_blocks; j++) {

- if(Blocks[j][ALLOC] == 1 && !memcmp(tmpBlocks[i], Blocks[j], 16)) {

- // Found an identical block

- for(ind=i-1,ind2=j-1; ind >= 0; ind--,ind2--) {

- if(ind2 < 0)

- ind2 = max_blocks;

- if(!Blocks[ind2][ALLOC]) { // Block ind2 not already found

- // Dbprintf("Tmp %d -> Block %d", ind, ind2);

- memcpy(Blocks[ind2], tmpBlocks[ind], 16);

- Blocks[ind2][ALLOC] = 1;

- num_blocks++;

- if(num_blocks == max_blocks) goto end;

- }

- for(ind=i+1,ind2=j+1; ind < n; ind++,ind2++) {

- if(ind2 > max_blocks)

- ind2 = 0;

- if(!Blocks[ind2][ALLOC]) { // Block ind2 not already found

- // Dbprintf("Tmp %d -> Block %d", ind, ind2);

- memcpy(Blocks[ind2], tmpBlocks[ind], 16);

- Blocks[ind2][ALLOC] = 1;

- num_blocks++;

- if(num_blocks == max_blocks) goto end;

- }

- tries++;

- if (BUTTON_PRESS()) return;

- } while (num_blocks != max_blocks);

-end:

- Dbprintf("-----------------------------------------");

- Dbprintf("Memory content:");

- Dbprintf("-----------------------------------------");

- for(i=0; i<max_blocks; i++) {

- if(Blocks[i][ALLOC]==1)

- Dbprintf("%02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x",

- Blocks[i][0], Blocks[i][1], Blocks[i][2], Blocks[i][3], Blocks[i][4], Blocks[i][5], Blocks[i][6], Blocks[i][7],

- Blocks[i][8], Blocks[i][9], Blocks[i][10], Blocks[i][11], Blocks[i][12], Blocks[i][13], Blocks[i][14], Blocks[i][15]);

- else

- Dbprintf("<missing block %d>", i);

- }

- Dbprintf("-----------------------------------------");

-

- return ;

+

+// Clone Indala 64-bit tag by UID to T55x7

+void CopyIndala64toT55x7(uint32_t hi, uint32_t lo) {

+ //Program the 2 data blocks for supplied 64bit UID

+ // and the Config for Indala 64 format (RF/32;PSK1 with RF/2;Maxblock=2)

+ uint32_t data[] = { T55x7_BITRATE_RF_32 | T55x7_MODULATION_PSK1 | (2 << T55x7_MAXBLOCK_SHIFT), hi, lo};

+ //TODO add selection of chip for Q5 or T55x7

+ // data[0] = (((32-2)/2)<<T5555_BITRATE_SHIFT) | T5555_MODULATION_PSK1 | 2 << T5555_MAXBLOCK_SHIFT;

+

+ WriteT55xx(data, 0, 3);

+ //Alternative config for Indala (Extended mode;RF/32;PSK1 with RF/2;Maxblock=2;Inverse data)

+ // T5567WriteBlock(0x603E1042,0);

+ DbpString("DONE!");

+}

+// Clone Indala 224-bit tag by UID to T55x7

+void CopyIndala224toT55x7(uint32_t uid1, uint32_t uid2, uint32_t uid3, uint32_t uid4, uint32_t uid5, uint32_t uid6, uint32_t uid7) {

+ //Program the 7 data blocks for supplied 224bit UID

+ uint32_t data[] = {0, uid1, uid2, uid3, uid4, uid5, uid6, uid7};

+ // and the block 0 for Indala224 format

+ //Config for Indala (RF/32;PSK1 with RF/2;Maxblock=7)

+ data[0] = T55x7_BITRATE_RF_32 | T55x7_MODULATION_PSK1 | (7 << T55x7_MAXBLOCK_SHIFT);

+ //TODO add selection of chip for Q5 or T55x7

+ // data[0] = (((32-2)/2)<<T5555_BITRATE_SHIFT) | T5555_MODULATION_PSK1 | 7 << T5555_MAXBLOCK_SHIFT;

+ WriteT55xx(data, 0, 8);

+ //Alternative config for Indala (Extended mode;RF/32;PSK1 with RF/2;Maxblock=7;Inverse data)

+ // T5567WriteBlock(0x603E10E2,0);

+ DbpString("DONE!");

+}

+// clone viking tag to T55xx

+void CopyVikingtoT55xx(uint32_t block1, uint32_t block2, uint8_t Q5) {

+ uint32_t data[] = {T55x7_BITRATE_RF_32 | T55x7_MODULATION_MANCHESTER | (2 << T55x7_MAXBLOCK_SHIFT), block1, block2};

+ if (Q5) data[0] = (32 << T5555_BITRATE_SHIFT) | T5555_MODULATION_MANCHESTER | 2 << T5555_MAXBLOCK_SHIFT;

+ // Program the data blocks for supplied ID and the block 0 config

+ WriteT55xx(data, 0, 3);

+ LED_D_OFF();

+ cmd_send(CMD_ACK,0,0,0,0,0);

}

+// 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

+ uint32_t data[] = {0, id>>32, id & 0xFFFFFFFF};

+

+ clock = (card & 0xFF00) >> 8;

+ clock = (clock == 0) ? 64 : clock;

+ Dbprintf("Clock rate: %d", clock);

+ if (card & 0xFF) { //t55x7

+ clock = GetT55xxClockBit(clock);

+ if (clock == 0) {

+ Dbprintf("Invalid clock rate: %d", clock);

+ return;

+ }

+ data[0] = clock | T55x7_MODULATION_MANCHESTER | (2 << T55x7_MAXBLOCK_SHIFT);

+ } else { //t5555 (Q5)

+ clock = (clock-2)>>1; //n = (RF-2)/2

+ data[0] = (clock << T5555_BITRATE_SHIFT) | T5555_MODULATION_MANCHESTER | (2 << T5555_MAXBLOCK_SHIFT);

+ }

+

+ WriteT55xx(data, 0, 3);

+

+ LED_D_OFF();

+ Dbprintf("Tag %s written with 0x%08x%08x\n", card ? "T55x7":"T5555",

+ (uint32_t)(id >> 32), (uint32_t)id);

+}

//-----------------------------------

// EM4469 / EM4305 routines

//-----------------------------------

// EM4469 / EM4305 routines

#define FWD_CMD_READ 0x9

#define FWD_CMD_DISABLE 0x5

#define FWD_CMD_READ 0x9

#define FWD_CMD_DISABLE 0x5

-

uint8_t forwardLink_data[64]; //array of forwarded bits

uint8_t * forward_ptr; //ptr for forward message preparation

uint8_t fwd_bit_sz; //forwardlink bit counter

uint8_t forwardLink_data[64]; //array of forwarded bits

uint8_t * forward_ptr; //ptr for forward message preparation

uint8_t fwd_bit_sz; //forwardlink bit counter

// see EM4469 spec

//====================================================================

//--------------------------------------------------------------------

// see EM4469 spec

//====================================================================

//--------------------------------------------------------------------

+// VALUES TAKEN FROM EM4x function: SendForward

+// START_GAP = 440; (55*8) cycles at 125Khz (8us = 1cycle)

+// WRITE_GAP = 128; (16*8)

+// WRITE_1 = 256 32*8; (32*8)

+

+// These timings work for 4469/4269/4305 (with the 55*8 above)

+// WRITE_0 = 23*8 , 9*8 SpinDelayUs(23*8);

+

uint8_t Prepare_Cmd( uint8_t cmd ) {

- //--------------------------------------------------------------------

- *forward_ptr++ = 0; //start bit

- *forward_ptr++ = 0; //second pause for 4050 code

+ *forward_ptr++ = 0; //start bit

+ *forward_ptr++ = 0; //second pause for 4050 code

- *forward_ptr++ = cmd;

- cmd >>= 1;

- *forward_ptr++ = cmd;

- cmd >>= 1;

- *forward_ptr++ = cmd;

- cmd >>= 1;

- *forward_ptr++ = cmd;

+ *forward_ptr++ = cmd;

+ cmd >>= 1;

+ *forward_ptr++ = cmd;

+ cmd >>= 1;

+ *forward_ptr++ = cmd;

+ cmd >>= 1;

+ *forward_ptr++ = cmd;

- return 6; //return number of emited bits

+ return 6; //return number of emited bits

}

//====================================================================

// prepares address bits

// see EM4469 spec

//====================================================================

}

//====================================================================

// prepares address bits

// see EM4469 spec

//====================================================================

-

-//--------------------------------------------------------------------

uint8_t Prepare_Addr( uint8_t addr ) {

- //--------------------------------------------------------------------

- register uint8_t line_parity;

+ register uint8_t line_parity;

- uint8_t i;

- line_parity = 0;

- for(i=0;i<6;i++) {

- *forward_ptr++ = addr;

- line_parity ^= addr;

- addr >>= 1;

- }

+ uint8_t i;

+ line_parity = 0;

+ for(i=0;i<6;i++) {

+ *forward_ptr++ = addr;

+ line_parity ^= addr;

+ addr >>= 1;

+ }

- *forward_ptr++ = (line_parity & 1);

+ *forward_ptr++ = (line_parity & 1);

- return 7; //return number of emited bits

+ return 7; //return number of emited bits

}

//====================================================================

// prepares data bits intreleaved with parity bits

// see EM4469 spec

//====================================================================

}

//====================================================================

// prepares data bits intreleaved with parity bits

// see EM4469 spec

//====================================================================

-

-//--------------------------------------------------------------------

uint8_t Prepare_Data( uint16_t data_low, uint16_t data_hi) {

- //--------------------------------------------------------------------

-

- register uint8_t line_parity;

- register uint8_t column_parity;

- register uint8_t i, j;

- register uint16_t data;

-

- data = data_low;

- column_parity = 0;

-

- for(i=0; i<4; i++) {

- line_parity = 0;

- for(j=0; j<8; j++) {

- line_parity ^= data;

- column_parity ^= (data & 1) << j;

- *forward_ptr++ = data;

- data >>= 1;

- }

- *forward_ptr++ = line_parity;

- if(i == 1)

- data = data_hi;

- }

-

- for(j=0; j<8; j++) {

- *forward_ptr++ = column_parity;

- column_parity >>= 1;

- }

- *forward_ptr = 0;

-

- return 45; //return number of emited bits

+

+ register uint8_t line_parity;

+ register uint8_t column_parity;

+ register uint8_t i, j;

+ register uint16_t data;

+

+ data = data_low;

+ column_parity = 0;

+

+ for(i=0; i<4; i++) {

+ line_parity = 0;

+ for(j=0; j<8; j++) {

+ line_parity ^= data;

+ column_parity ^= (data & 1) << j;

+ *forward_ptr++ = data;

+ data >>= 1;

+ }

+ *forward_ptr++ = line_parity;

+ if(i == 1)

+ data = data_hi;

+ }

+

+ for(j=0; j<8; j++) {

+ *forward_ptr++ = column_parity;

+ column_parity >>= 1;

+ }

+ *forward_ptr = 0;

+

+ return 45; //return number of emited bits

}

//====================================================================

}

//====================================================================

void SendForward(uint8_t fwd_bit_count) {

//====================================================================

void SendForward(uint8_t fwd_bit_count) {

- fwd_write_ptr = forwardLink_data;

- fwd_bit_sz = fwd_bit_count;

-

- LED_D_ON();

-

- //Field on

- 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);

-

- // force 1st mod pulse (start gap must be longer for 4305)

- fwd_bit_sz--; //prepare next bit modulation

- fwd_write_ptr++;

- FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off

- SpinDelayUs(55*8); //55 cycles off (8us each)for 4305

- FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz

- FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);//field on

- SpinDelayUs(16*8); //16 cycles on (8us each)

-

- // now start writting

- while(fwd_bit_sz-- > 0) { //prepare next bit modulation

- if(((*fwd_write_ptr++) & 1) == 1)

- SpinDelayUs(32*8); //32 cycles at 125Khz (8us each)

- else {

- //These timings work for 4469/4269/4305 (with the 55*8 above)

- FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off

- SpinDelayUs(23*8); //16-4 cycles off (8us each)

- FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz

- FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);//field on

- SpinDelayUs(9*8); //16 cycles on (8us each)

- }

+ fwd_write_ptr = forwardLink_data;

+ fwd_bit_sz = fwd_bit_count;

+

+ LED_D_ON();

+

+ // Set up FPGA, 125kHz

+ LFSetupFPGAForADC(95, true);

+

+ // force 1st mod pulse (start gap must be longer for 4305)

+ fwd_bit_sz--; //prepare next bit modulation

+ fwd_write_ptr++;

+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off

+ SpinDelayUs(55*8); //55 cycles off (8us each)for 4305

+ FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);//field on

+ SpinDelayUs(16*8); //16 cycles on (8us each)

+

+ // now start writting

+ while(fwd_bit_sz-- > 0) { //prepare next bit modulation

+ if(((*fwd_write_ptr++) & 1) == 1)

+ SpinDelayUs(32*8); //32 cycles at 125Khz (8us each)

+ else {

+ //These timings work for 4469/4269/4305 (with the 55*8 above)

+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off

+ SpinDelayUs(23*8); //16-4 cycles off (8us each)

+ FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);//field on

+ SpinDelayUs(9*8); //16 cycles on (8us each)

+ }

}

-

void EM4xLogin(uint32_t Password) {

- uint8_t fwd_bit_count;

-

- forward_ptr = forwardLink_data;

- fwd_bit_count = Prepare_Cmd( FWD_CMD_LOGIN );

- fwd_bit_count += Prepare_Data( Password&0xFFFF, Password>>16 );

+ uint8_t fwd_bit_count;

- SendForward(fwd_bit_count);

+ forward_ptr = forwardLink_data;

+ fwd_bit_count = Prepare_Cmd( FWD_CMD_LOGIN );

+ fwd_bit_count += Prepare_Data( Password&0xFFFF, Password>>16 );

- //Wait for command to complete

- SpinDelay(20);

+ SendForward(fwd_bit_count);

+ //Wait for command to complete

+ SpinDelay(20);

}

void EM4xReadWord(uint8_t Address, uint32_t Pwd, uint8_t PwdMode) {

}

void EM4xReadWord(uint8_t Address, uint32_t Pwd, uint8_t PwdMode) {

- uint8_t fwd_bit_count;

- uint8_t *dest = (uint8_t *)BigBuf;

- int m=0, i=0;

-

- //If password mode do login

- if (PwdMode == 1) EM4xLogin(Pwd);

-

- forward_ptr = forwardLink_data;

- fwd_bit_count = Prepare_Cmd( FWD_CMD_READ );

- fwd_bit_count += Prepare_Addr( Address );

-

- 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();

-

- SendForward(fwd_bit_count);

-

- // 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();

+ uint8_t fwd_bit_count;

+ uint8_t *dest = BigBuf_get_addr();

+ uint16_t bufferlength = BigBuf_max_traceLen();

+ uint32_t i = 0;

+

+ // Clear destination buffer before sending the command

+ BigBuf_Clear_ext(false);

+

+ //If password mode do login

+ if (PwdMode == 1) EM4xLogin(Pwd);

+

+ forward_ptr = forwardLink_data;

+ fwd_bit_count = Prepare_Cmd( FWD_CMD_READ );

+ fwd_bit_count += Prepare_Addr( Address );

+

+ // 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();

+

+ SendForward(fwd_bit_count);

+

+ // 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 >= bufferlength) break;

+ }

+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off

+ cmd_send(CMD_ACK,0,0,0,0,0);

+ LED_D_OFF();

}

void EM4xWriteWord(uint32_t Data, uint8_t Address, uint32_t Pwd, uint8_t PwdMode) {

}

void EM4xWriteWord(uint32_t Data, uint8_t Address, uint32_t Pwd, uint8_t PwdMode) {

- uint8_t fwd_bit_count;

+ uint8_t fwd_bit_count;

- //If password mode do login

- if (PwdMode == 1) EM4xLogin(Pwd);

+ //If password mode do login

+ if (PwdMode == 1) EM4xLogin(Pwd);

- forward_ptr = forwardLink_data;

- fwd_bit_count = Prepare_Cmd( FWD_CMD_WRITE );

- fwd_bit_count += Prepare_Addr( Address );

- fwd_bit_count += Prepare_Data( Data&0xFFFF, Data>>16 );

+ forward_ptr = forwardLink_data;

+ fwd_bit_count = Prepare_Cmd( FWD_CMD_WRITE );

+ fwd_bit_count += Prepare_Addr( Address );

+ fwd_bit_count += Prepare_Data( Data&0xFFFF, Data>>16 );

- SendForward(fwd_bit_count);

+ SendForward(fwd_bit_count);

- //Wait for write to complete

- SpinDelay(20);

- FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off

- LED_D_OFF();

+ //Wait for write to complete

+ SpinDelay(20);

+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off

+ LED_D_OFF();

}