// Also routines for raw mode reading/simulating of LF waveform
//-----------------------------------------------------------------------------
-#include "proxmark3.h"
+#include "../include/proxmark3.h"
#include "apps.h"
#include "util.h"
-#include "hitag2.h"
-#include "crc16.h"
+#include "../common/crc16.h"
+#include "../common/lfdemod.h"
#include "string.h"
+#include "crapto1.h"
+#include "mifareutil.h"
+#include "../include/hitag2.h"
-void AcquireRawAdcSamples125k(int at134khz)
+// Sam7s has several timers, we will use the source TIMER_CLOCK1 (aka AT91C_TC_CLKS_TIMER_DIV1_CLOCK)
+// TIMER_CLOCK1 = MCK/2, MCK is running at 48 MHz, Timer is running at 48/2 = 24 MHz
+// Hitag units (T0) have duration of 8 microseconds (us), which is 1/125000 per second (carrier)
+// T0 = TIMER_CLOCK1 / 125000 = 192
+#define T0 192
+
+#define SHORT_COIL() LOW(GPIO_SSC_DOUT)
+#define OPEN_COIL() HIGH(GPIO_SSC_DOUT)
+
+void LFSetupFPGAForADC(int divisor, bool lf_field)
{
- if (at134khz)
+ FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
+ if ( (divisor == 1) || (divisor < 0) || (divisor > 255) )
FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 88); //134.8Khz
- else
+ else if (divisor == 0)
FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
+ else
+ FpgaSendCommand(FPGA_CMD_SET_DIVISOR, divisor);
- FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER);
+ 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);
-
+ SpinDelay(150);
+
// Now set up the SSC to get the ADC samples that are now streaming at us.
FpgaSetupSsc();
+}
- // Now call the acquisition routine
+void AcquireRawAdcSamples125k(int divisor)
+{
+ LFSetupFPGAForADC(divisor, true);
DoAcquisition125k();
}
+void SnoopLFRawAdcSamples(int divisor, int trigger_threshold)
+{
+ LFSetupFPGAForADC(divisor, false);
+ DoAcquisition125k_threshold(trigger_threshold);
+}
+
// split into two routines so we can avoid timing issues after sending commands //
-void DoAcquisition125k(void)
+void DoAcquisition125k_internal(int trigger_threshold, bool silent)
{
uint8_t *dest = (uint8_t *)BigBuf;
- int n = sizeof(BigBuf);
- int i;
+ uint16_t i = 0;
+ memset(dest, 0x00, BIGBUF_SIZE);
- memset(dest, 0, n);
- 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++;
LED_D_OFF();
- if (i >= n) break;
+ if (trigger_threshold != -1 && dest[i] < trigger_threshold)
+ continue;
+ else
+ trigger_threshold = -1;
+ if (++i >= BIGBUF_SIZE) break;
}
}
- Dbprintf("buffer samples: %02x %02x %02x %02x %02x %02x %02x %02x ...",
+ 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]);
+ }
}
-
+void DoAcquisition125k_threshold(int trigger_threshold) {
+ DoAcquisition125k_internal(trigger_threshold, true);
+}
+void DoAcquisition125k() {
+ DoAcquisition125k_internal(-1, true);
+}
+
void ModThenAcquireRawAdcSamples125k(int delay_off, int period_0, int period_1, uint8_t *command)
{
- int at134khz;
-
+ FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
+
/* Make sure the tag is reset */
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
SpinDelay(2500);
+ int divisor = 95; // 125 KHz
// see if 'h' was specified
if (command[strlen((char *) command) - 1] == 'h')
- at134khz = TRUE;
- else
- at134khz = FALSE;
-
- if (at134khz)
- FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 88); //134.8Khz
- else
- FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
-
- FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER);
+ divisor = 88; // 134.8 KHz
+ FpgaSendCommand(FPGA_CMD_SET_DIVISOR, divisor);
+ 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.
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
LED_D_OFF();
SpinDelayUs(delay_off);
- if (at134khz)
- FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 88); //134.8Khz
- else
- FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
+ FpgaSendCommand(FPGA_CMD_SET_DIVISOR, divisor);
- FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER);
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
LED_D_ON();
if(*(command++) == '0')
SpinDelayUs(period_0);
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
LED_D_OFF();
SpinDelayUs(delay_off);
- if (at134khz)
- FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 88); //134.8Khz
- else
- FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
-
- FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER);
+ FpgaSendCommand(FPGA_CMD_SET_DIVISOR, divisor);
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
// now do the read
- DoAcquisition125k();
+ DoAcquisition125k(-1);
}
/* blank r/w tag data stream
signed char *dest = (signed char *)BigBuf;
int n = sizeof(BigBuf);
-// int *dest = GraphBuffer;
-// int n = GraphTraceLen;
// 128 bit shift register [shift3:shift2:shift1:shift0]
uint32_t shift3 = 0, shift2 = 0, shift1 = 0, shift0 = 0;
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
{
if (b&(1<<i)) {
// stop modulating antenna
- LOW(GPIO_SSC_DOUT);
+ SHORT_COIL();
SpinDelayUs(1000);
// modulate antenna
- HIGH(GPIO_SSC_DOUT);
+ OPEN_COIL();
SpinDelayUs(1000);
} else {
// stop modulating antenna
- LOW(GPIO_SSC_DOUT);
+ SHORT_COIL();
SpinDelayUs(300);
// modulate antenna
- HIGH(GPIO_SSC_DOUT);
+ OPEN_COIL();
SpinDelayUs(1700);
}
}
// 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);
DbpString("Now use tiread to check");
}
-void SimulateTagLowFrequency(int period, int gap, int ledcontrol)
+
+
+// PIO_CODR = Clear Output Data Register
+// PIO_SODR = Set Output Data Register
+//#define LOW(x) AT91C_BASE_PIOA->PIO_CODR = (x)
+//#define HIGH(x) AT91C_BASE_PIOA->PIO_SODR = (x)
+void SimulateTagLowFrequency( uint16_t period, uint32_t gap, uint8_t ledcontrol)
{
- int i;
- uint8_t *tab = (uint8_t *)BigBuf;
-
- FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_EDGE_DETECT);
-
- AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DOUT | GPIO_SSC_CLK;
-
+ LED_D_ON();
+
+ uint16_t i = 0;
+ uint8_t send = 0;
+
+ //int overflow = 0;
+ uint8_t *buf = (uint8_t *)BigBuf;
+
+ FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_EDGE_DETECT | FPGA_LF_EDGE_DETECT_READER_FIELD);
+ FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
+ SetAdcMuxFor(GPIO_MUXSEL_LOPKD);
+ RELAY_OFF();
+
+ // Configure output pin that is connected to the FPGA (for modulating)
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;
+ AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DOUT;
+
+ SHORT_COIL();
+
+ // Enable Peripheral Clock for TIMER_CLOCK0, used to measure exact timing before answering
+ AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_TC0);
+
+ // Enable Peripheral Clock for TIMER_CLOCK1, used to capture edges of the reader frames
+ AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_TC1);
+ AT91C_BASE_PIOA->PIO_BSR = GPIO_SSC_FRAME;
+
+ // Disable timer during configuration
+ AT91C_BASE_TC1->TC_CCR = AT91C_TC_CLKDIS;
+
+ // Capture mode, default timer source = MCK/2 (TIMER_CLOCK1), TIOA is external trigger,
+ // external trigger rising edge, load RA on rising edge of TIOA.
+ AT91C_BASE_TC1->TC_CMR = AT91C_TC_CLKS_TIMER_DIV1_CLOCK | AT91C_TC_ETRGEDG_RISING | AT91C_TC_ABETRG | AT91C_TC_LDRA_RISING;
+
+ // Enable and reset counter
+ //AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKEN | AT91C_TC_SWTRG;
+ AT91C_BASE_TC1->TC_CCR = AT91C_TC_CLKEN | AT91C_TC_SWTRG;
+
+ while(!BUTTON_PRESS()) {
+ WDT_HIT();
+
+ // Receive frame, watch for at most T0*EOF periods
+ while (AT91C_BASE_TC1->TC_CV < T0 * 55) {
+
+ // Check if rising edge in modulation is detected
+ if(AT91C_BASE_TC1->TC_SR & AT91C_TC_LDRAS) {
+ // Retrieve the new timing values
+ //int ra = (AT91C_BASE_TC1->TC_RA/T0) + overflow;
+ //Dbprintf("Timing value - %d %d", ra, overflow);
+ //overflow = 0;
+
+ // Reset timer every frame, we have to capture the last edge for timing
+ AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKEN | AT91C_TC_SWTRG;
+ send = 1;
+
+ LED_B_ON();
}
- 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;
+ }
+
+ if ( send ) {
+ // Disable timer 1 with external trigger to avoid triggers during our own modulation
+ AT91C_BASE_TC1->TC_CCR = AT91C_TC_CLKDIS;
+
+ // Wait for HITAG_T_WAIT_1 carrier periods after the last reader bit,
+ // not that since the clock counts since the rising edge, but T_Wait1 is
+ // with respect to the falling edge, we need to wait actually (T_Wait1 - T_Low)
+ // periods. The gap time T_Low varies (4..10). All timer values are in
+ // terms of T0 units
+ while(AT91C_BASE_TC0->TC_CV < T0 * 16 );
+
+ // datat kommer in som 1 bit för varje position i arrayn
+ for(i = 0; i < period; ++i) {
+
+ // Reset clock for the next bit
+ AT91C_BASE_TC0->TC_CCR = AT91C_TC_SWTRG;
+
+ if ( buf[i] > 0 )
+ HIGH(GPIO_SSC_DOUT);
+ else
+ LOW(GPIO_SSC_DOUT);
+
+ while(AT91C_BASE_TC0->TC_CV < T0 * 1 );
}
- WDT_HIT();
+ // Drop modulation
+ LOW(GPIO_SSC_DOUT);
+
+ // Enable and reset external trigger in timer for capturing future frames
+ AT91C_BASE_TC1->TC_CCR = AT91C_TC_CLKEN | AT91C_TC_SWTRG;
+ LED_B_OFF();
}
-
- i++;
- if(i == period) {
- i = 0;
- if (gap) {
- SHORT_COIL();
- SpinDelayUs(gap);
+
+ send = 0;
+
+ // Save the timer overflow, will be 0 when frame was received
+ //overflow += (AT91C_BASE_TC1->TC_CV/T0);
+
+ // Reset the timer to restart while-loop that receives frames
+ AT91C_BASE_TC1->TC_CCR = AT91C_TC_SWTRG;
+ }
+
+ LED_B_OFF();
+ LED_D_OFF();
+ AT91C_BASE_TC1->TC_CCR = AT91C_TC_CLKDIS;
+ AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKDIS;
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+
+ DbpString("Sim Stopped");
+}
+
+
+void SimulateTagLowFrequencyA(int len, int gap)
+{
+ uint8_t *buf = (uint8_t *)BigBuf;
+
+ FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
+ FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_EDGE_DETECT | FPGA_LF_EDGE_DETECT_TOGGLE_MODE); // new izsh toggle mode!
+
+ // 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();
+ SpinDelay(5);
+
+ AT91C_BASE_SSC->SSC_THR = 0x00;
+
+ int i = 0;
+ while(!BUTTON_PRESS()) {
+ WDT_HIT();
+ if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_TXRDY) {
+
+ if ( buf[i] > 0 )
+ AT91C_BASE_SSC->SSC_THR = 0x43;
+ else
+ AT91C_BASE_SSC->SSC_THR = 0x00;
+
+ ++i;
+ LED_A_ON();
+ if (i >= len){
+ i = 0;
}
}
+
+ if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_RXRDY) {
+ volatile uint32_t r = AT91C_BASE_SSC->SSC_RHR;
+ (void)r;
+ LED_A_OFF();
+ }
}
+ DbpString("lf simulate stopped");
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
}
#define DEBUG_FRAME_CONTENTS 1
}
// compose fc/8 fc/10 waveform
-static void fc(int c, int *n) {
+static void fc(int c, uint16_t *n) {
uint8_t *dest = (uint8_t *)BigBuf;
int idx;
// for when we want an fc8 pattern every 4 logical bits
- if(c==0) {
+ if(c == 0) {
dest[((*n)++)]=1;
dest[((*n)++)]=1;
dest[((*n)++)]=0;
dest[((*n)++)]=0;
}
// an fc/8 encoded bit is a bit pattern of 11000000 x6 = 48 samples
- if(c==8) {
+ if(c == 8) {
for (idx=0; idx<6; idx++) {
dest[((*n)++)]=1;
dest[((*n)++)]=1;
}
// an fc/10 encoded bit is a bit pattern of 1110000000 x5 = 50 samples
- if(c==10) {
- for (idx=0; idx<5; idx++) {
+ if(c == 10) {
+ for (idx = 0; idx < 5; idx++) {
dest[((*n)++)]=1;
dest[((*n)++)]=1;
dest[((*n)++)]=1;
// 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)
+void CmdHIDsimTAG(int hi, int lo, uint8_t ledcontrol)
{
- int n=0, i=0;
+ uint16_t 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
nor 1 bits, they are special patterns (a = set of 12 fc8 and b = set of 10 fc10)
*/
- if (hi>0xFFF) {
+ if (hi > 0xFFF) {
DbpString("Tags can only have 44 bits.");
return;
}
- fc(0,&n);
+ 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
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) {
+ 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) {
+ 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();
}
-
-// loop to capture raw HID waveform then FSK demodulate the TAG ID from it
+// 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;
- int m=0, n=0, i=0, idx=0, found=0, lastval=0;
- uint32_t hi2=0, hi=0, lo=0;
+ uint32_t hi2 = 0, hi = 0, lo = 0;
- FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
- FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER);
+ // Configure to go in 125Khz listen mode
+ LFSetupFPGAForADC(0, true);
- // Connect the A/D to the peak-detected low-frequency path.
- SetAdcMuxFor(GPIO_MUXSEL_LOPKD);
+ while(!BUTTON_PRESS()) {
- // 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();
-
- for(;;) {
WDT_HIT();
- if (ledcontrol)
- LED_A_ON();
- if(BUTTON_PRESS()) {
- DbpString("Stopped");
- if (ledcontrol)
- LED_A_OFF();
- return;
- }
+ if (ledcontrol) LED_A_ON();
- i = 0;
- m = sizeof(BigBuf);
- memset(dest,128,m);
- for(;;) {
- if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
- AT91C_BASE_SSC->SSC_THR = 0x43;
- if (ledcontrol)
- LED_D_ON();
- }
- 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 (ledcontrol)
- LED_D_OFF();
- if(i >= m) {
- break;
- }
- }
- }
+ DoAcquisition125k_internal(-1,true);
// FSK demodulator
+ int bitLen = HIDdemodFSK(dest,BIGBUF_SIZE,&hi2,&hi,&lo);
- // sync to first lo-hi transition
- for( idx=1; idx<m; idx++) {
- if (dest[idx-1]<dest[idx])
- lastval=idx;
- break;
- }
WDT_HIT();
- // count cycles between consecutive lo-hi transitions, there should be either 8 (fc/8)
- // or 10 (fc/10) cycles but in practice due to noise etc we may end up with with anywhere
- // between 7 to 11 cycles so fuzz it by treat anything <9 as 8 and anything else as 10
- for( i=0; idx<m; idx++) {
- if (dest[idx-1]<dest[idx]) {
- dest[i]=idx-lastval;
- if (dest[i] <= 8) {
- dest[i]=1;
- } else {
- dest[i]=0;
- }
+ if (bitLen > 0 && lo > 0){
- lastval=idx;
- i++;
- }
- }
- m=i;
- WDT_HIT();
+ // 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
- // we now have a set of cycle counts, loop over previous results and aggregate data into bit patterns
- lastval=dest[0];
- idx=0;
- i=0;
- n=0;
- for( idx=0; idx<m; idx++) {
- if (dest[idx]==lastval) {
- n++;
+ 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 {
- // a bit time is five fc/10 or six fc/8 cycles so figure out how many bits a pattern width represents,
- // an extra fc/8 pattern preceeds every 4 bits (about 200 cycles) just to complicate things but it gets
- // swallowed up by rounding
- // expected results are 1 or 2 bits, any more and it's an invalid manchester encoding
- // special start of frame markers use invalid manchester states (no transitions) by using sequences
- // like 111000
- if (dest[idx-1]) {
- n=(n+1)/6; // fc/8 in sets of 6
- } else {
- n=(n+1)/5; // fc/10 in sets of 5
+ //standard HID tags <38 bits
+ 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);
+ }
}
- switch (n) { // stuff appropriate bits in buffer
- case 0:
- case 1: // one bit
- dest[i++]=dest[idx-1];
- break;
- case 2: // two bits
- dest[i++]=dest[idx-1];
- dest[i++]=dest[idx-1];
- break;
- case 3: // 3 bit start of frame markers
- dest[i++]=dest[idx-1];
- dest[i++]=dest[idx-1];
- dest[i++]=dest[idx-1];
- break;
- // When a logic 0 is immediately followed by the start of the next transmisson
- // (special pattern) a pattern of 4 bit duration lengths is created.
- case 4:
- dest[i++]=dest[idx-1];
- dest[i++]=dest[idx-1];
- dest[i++]=dest[idx-1];
- dest[i++]=dest[idx-1];
- break;
- default: // this shouldn't happen, don't stuff any bits
- break;
+ 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);
+ }
}
- n=0;
- lastval=dest[idx];
+ 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;
}
- m=i;
WDT_HIT();
+ }
+ DbpString("Stopped");
+ if (ledcontrol) LED_A_OFF();
+}
- // 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
- for( idx=0; idx<m-6; idx++) {
- // search for a start of frame marker
- if ( dest[idx] && dest[idx+1] && dest[idx+2] && (!dest[idx+3]) && (!dest[idx+4]) && (!dest[idx+5]) )
- {
- found=1;
- idx+=6;
- if (found && (hi2|hi|lo)) {
- if (hi2 != 0){
- Dbprintf("TAG ID: %x%08x%08x (%d)",
- (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
- }
- else {
- Dbprintf("TAG ID: %x%08x (%d)",
- (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
- }
- /* if we're only looking for one tag */
- if (findone)
- {
- *high = hi;
- *low = lo;
- return;
- }
- hi2=0;
- hi=0;
- lo=0;
- found=0;
- }
- }
- if (found) {
- if (dest[idx] && (!dest[idx+1]) ) {
- hi2=(hi2<<1)|(hi>>31);
- hi=(hi<<1)|(lo>>31);
- lo=(lo<<1)|0;
- } else if ( (!dest[idx]) && dest[idx+1]) {
- hi2=(hi2<<1)|(hi>>31);
- hi=(hi<<1)|(lo>>31);
- lo=(lo<<1)|1;
- } else {
- found=0;
- hi2=0;
- hi=0;
- lo=0;
- }
- idx++;
- }
- if ( dest[idx] && dest[idx+1] && dest[idx+2] && (!dest[idx+3]) && (!dest[idx+4]) && (!dest[idx+5]) )
- {
- found=1;
- idx+=6;
- if (found && (hi|lo)) {
- if (hi2 != 0){
- Dbprintf("TAG ID: %x%08x%08x (%d)",
- (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
- }
- else {
- Dbprintf("TAG ID: %x%08x (%d)",
- (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
- }
- /* if we're only looking for one tag */
- if (findone)
- {
- *high = hi;
- *low = lo;
- return;
- }
- hi2=0;
- hi=0;
- lo=0;
- found=0;
- }
- }
+void CmdEM410xdemod(int findone, int *high, int *low, int ledcontrol)
+{
+ uint8_t *dest = (uint8_t *)BigBuf;
+ uint32_t bitLen = 0;
+ int clk = 0, invert = 0, errCnt = 0;
+ uint64_t lo = 0;
+
+ // Configure to go in 125Khz listen mode
+ LFSetupFPGAForADC(0, true);
+
+ while(!BUTTON_PRESS()) {
+
+ WDT_HIT();
+ if (ledcontrol) LED_A_ON();
+
+ DoAcquisition125k_internal(-1,true);
+
+ // FSK demodulator
+ bitLen = BIGBUF_SIZE;
+ errCnt = askmandemod(dest,&bitLen,&clk,&invert);
+ if ( errCnt < 0 ) continue;
+
+ WDT_HIT();
+
+ lo = Em410xDecode(dest,bitLen);
+
+ if ( lo <= 0) continue;
+
+ 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;
}
+
WDT_HIT();
+ lo = clk = invert = errCnt = 0;
}
+ DbpString("Stopped");
+ if (ledcontrol) LED_A_OFF();
}
+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;
+
+ LFSetupFPGAForADC(0, true);
+
+ while(!BUTTON_PRESS()) {
+
+ WDT_HIT();
+ if (ledcontrol) LED_A_ON();
+
+ DoAcquisition125k_internal(-1, true);
+
+ idx = IOdemodFSK(dest, BIGBUF_SIZE);
+
+ if ( idx < 0 )
+ continue;
+
+ WDT_HIT();
+
+ //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 (findone){
+ if (ledcontrol) LED_A_OFF();
+ return;
+ }
+ code = code2 = 0;
+ version = facilitycode = 0;
+ number = 0;
+ idx = 0;
+ }
+
+ DbpString("Stopped");
+ if (ledcontrol) LED_A_OFF();
+}
/*------------------------------
* T5555/T5557/T5567 routines
*/
/* T55x7 configuration register definitions */
-#define T55x7_POR_DELAY 0x00000001
-#define T55x7_ST_TERMINATOR 0x00000008
-#define T55x7_PWD 0x00000010
+#define T55x7_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_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_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_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_ST_TERMINATOR 0x00000001
#define T5555_MAXBLOCK_SHIFT 0x00000001
#define T5555_MODULATION_MANCHESTER 0
#define T5555_MODULATION_PSK1 0x00000010
#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
+#define T5555_INVERT_OUTPUT 0x00000080
+#define T5555_PSK_RF_2 0
+#define T5555_PSK_RF_4 0x00000100
+#define T5555_PSK_RF_8 0x00000200
+#define T5555_USE_PWD 0x00000400
+#define T5555_USE_AOR 0x00000800
+#define T5555_BITRATE_SHIFT 12
+#define T5555_FAST_WRITE 0x00004000
+#define T5555_PAGE_SELECT 0x00008000
/*
* Relevant times in microsecond
* To compensate antenna falling times shorten the write times
* and enlarge the gap ones.
*/
-#define START_GAP 250
-#define WRITE_GAP 160
-#define WRITE_0 144 // 192
-#define WRITE_1 400 // 432 for T55x7; 448 for E5550
+#define START_GAP 30*8 // 10 - 50fc 250
+#define WRITE_GAP 20*8 // 8 - 30fc
+#define WRITE_0 24*8 // 16 - 31fc 24fc 192
+#define WRITE_1 54*8 // 48 - 63fc 54fc 432 for T55x7; 448 for E5550
+
+// 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);
+
+#define T55xx_SAMPLES_SIZE 12000 // 32 x 32 x 10 (32 bit times numofblock (7), times clock skip..)
// 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_READER);
- if (bit == 0)
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
+ if (!bit)
SpinDelayUs(WRITE_0);
else
SpinDelayUs(WRITE_1);
// 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;
+ uint32_t i = 0;
- FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
- FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER);
-
- // Give it a bit of time for the resonant antenna to settle.
- // And for the tag to fully power up
- SpinDelay(150);
+ // Set up FPGA, 125kHz
+ // Wait for config.. (192+8190xPOW)x8 == 67ms
+ LFSetupFPGAForADC(0, true);
// Now start writting
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
// Pwd
for (i = 0x80000000; i != 0; i >>= 1)
T55xxWriteBit(Pwd & i);
- }
+ }
// Lock bit
T55xxWriteBit(0);
// 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_READER);
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
SpinDelay(20);
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
}
-
-// Read one card block in page 0
+// 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;
-
- 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();
+ uint8_t *dest = get_bigbufptr_recvrespbuf();
+ uint16_t bufferlength = T55xx_SAMPLES_SIZE;
+ uint32_t i = 0;
- LED_D_ON();
- FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
- FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER);
+ // Clear destination buffer before sending the command 0x80 = average.
+ memset(dest, 0x80, bufferlength);
- // Give it a bit of time for the resonant antenna to settle.
- // And for the tag to fully power up
- SpinDelay(150);
+ // Set up FPGA, 125kHz
+ // Wait for config.. (192+8190xPOW)x8 == 67ms
+ LFSetupFPGAForADC(0, true);
- // Now start writting
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
SpinDelayUs(START_GAP);
-
+
// Opcode
T55xxWriteBit(1);
T55xxWriteBit(0); //Page 0
// 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_READER);
-
- // Now do the acquisition
+ // Turn field on to read the response
+ TurnReadLFOn();
+
+ // Now do the acquisition
i = 0;
for(;;) {
if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_TXRDY) {
AT91C_BASE_SSC->SSC_THR = 0x43;
+ //AT91C_BASE_SSC->SSC_THR = 0xff;
+ LED_D_ON();
}
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;
+ ++i;
+ LED_D_OFF();
+ if (i >= bufferlength) break;
}
}
-
- FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
+
+ cmd_send(CMD_ACK,0,0,0,0,0);
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
LED_D_OFF();
- DbpString("DONE!");
}
// Read card traceability data (page 1)
-void T55xxReadTrace(void){
- uint8_t *dest = (uint8_t *)BigBuf;
- int m=0, i=0;
-
- 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_READER);
-
- // 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
+void T55xxReadTrace(void){
+ uint8_t *dest = get_bigbufptr_recvrespbuf();
+ uint16_t bufferlength = T55xx_SAMPLES_SIZE;
+ uint32_t i = 0;
+
+ // Clear destination buffer before sending the command 0x80 = average
+ memset(dest, 0x80, bufferlength);
+
+ LFSetupFPGAForADC(0, true);
+
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_READER);
-
- // Now do the acquisition
- i = 0;
+ // Turn field on to read the response
+ TurnReadLFOn();
+
+ // Now do the acquisition
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;
- i++;
- if (i >= m) break;
+ ++i;
+ LED_D_OFF();
+
+ if (i >= bufferlength) break;
}
}
-
- FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
+
+ cmd_send(CMD_ACK,0,0,0,0,0);
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
LED_D_OFF();
- DbpString("DONE!");
+}
+
+void TurnReadLFOn(){
+ 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.
+ //SpinDelay(30);
+ SpinDelayUs(8*150);
}
/*-------------- 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, data2, data3, data4, data5, data6; //up to six blocks for long format
+ 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) {
else
data1 |= (1<<((3-i)*2)); // 0 -> 01
}
-
+
data2 = 0;
for (int i=0;i<16;i++) {
if (hi2 & (1<<(15-i)))
else
data2 |= (1<<((15-i)*2)); // 0 -> 01
}
-
+
data3 = 0;
for (int i=0;i<16;i++) {
if (hi & (1<<(31-i)))
else
data3 |= (1<<((15-i)*2)); // 0 -> 01
}
-
+
data4 = 0;
for (int i=0;i<16;i++) {
if (hi & (1<<(15-i)))
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)); // 0 -> 01
}
}
- else {
+ 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
- }
-
+
+ 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)))
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(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);
+ T55xxWriteBlock(T55x7_BITRATE_RF_50 |
+ T55x7_MODULATION_FSK2a |
+ last_block << T55x7_MAXBLOCK_SHIFT,
+ 0,0,0);
LED_D_OFF();
DbpString("DONE!");
}
+void CopyIOtoT55x7(uint32_t hi, uint32_t lo, uint8_t longFMT)
+{
+ int data1=0, data2=0; //up to six blocks for long format
+
+ data1 = hi; // load preamble
+ data2 = lo;
+
+ LED_D_ON();
+ // Program the data blocks for supplied ID
+ // and the block 0 for HID format
+ T55xxWriteBlock(data1,1,0,0);
+ T55xxWriteBlock(data2,2,0,0);
+
+ //Config Block
+ T55xxWriteBlock(0x00147040,0,0,0);
+ LED_D_OFF();
+
+ DbpString("DONE!");
+}
+
// Define 9bit header for EM410x tags
#define EM410X_HEADER 0x1FF
#define EM410X_ID_LENGTH 40
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) {
T55xxWriteBlock((uint32_t)id, 2, 0, 0);
// Config for EM410x (RF/64, Manchester, Maxblock=2)
- if (card)
+ 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(T55x7_BITRATE_RF_64 |
+ T55xxWriteBlock(clock |
T55x7_MODULATION_MANCHESTER |
2 << T55x7_MAXBLOCK_SHIFT,
0, 0, 0);
+ }
else
// Writing configuration for T5555(Q5) tag
T55xxWriteBlock(0x1F << T5555_BITRATE_SHIFT |
// 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(T55x7_BITRATE_RF_32 |
T55x7_MODULATION_PSK1 |
2 << T55x7_MAXBLOCK_SHIFT,
- 0,0,0);
+ 0, 0, 0);
//Alternative config for Indala (Extended mode;RF/32;PSK1 with RF/2;Maxblock=2;Inverse data)
-// T5567WriteBlock(0x603E1042,0);
+ // 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);
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);
+ // T5567WriteBlock(0x603E10E2,0);
DbpString("DONE!");
-
}
+
#define abs(x) ( ((x)<0) ? -(x) : (x) )
#define max(x,y) ( x<y ? y:x)
int DemodPCF7931(uint8_t **outBlocks) {
- uint8_t BitStream[256];
- uint8_t Blocks[8][16];
- uint8_t *GraphBuffer = (uint8_t *)BigBuf;
- int GraphTraceLen = sizeof(BigBuf);
- int i, j, lastval, bitidx, half_switch;
- int clock = 64;
- int tolerance = clock / 8;
- int pmc, block_done;
- int lc, warnings = 0;
- int num_blocks = 0;
- int lmin=128, lmax=128;
- uint8_t dir;
-
- AcquireRawAdcSamples125k(0);
-
- lmin = 64;
- lmax = 192;
-
- i = 2;
-
- /* Find first local max/min */
- if(GraphBuffer[1] > GraphBuffer[0]) {
+ 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;
+ break;
i++;
}
dir = 0;
- }
- else {
+ }
+ else {
while(i < GraphTraceLen) {
if( !(GraphBuffer[i] < GraphBuffer[i-1]) && GraphBuffer[i] < lmin)
- break;
+ 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))
+ }
+
+ lastval = i++;
+ half_switch = 0;
+ pmc = 0;
+ block_done = 0;
+
+ for (bitidx = 0; i < GraphTraceLen; i++)
{
- 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)
+ 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)
{
- 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++;
+ if (GraphBuffer[i-1] > GraphBuffer[i]) dir=0;
+ else dir = 1;
+ }
}
- bitidx = 0;
- block_done = 0;
- half_switch = 0;
- }
- if (GraphBuffer[i-1] > GraphBuffer[i]) dir=0;
- else dir = 1;
+ if(bitidx==255)
+ bitidx=0;
+ warnings = 0;
+ if(num_blocks == 4) break;
}
- if(bitidx==255)
- bitidx=0;
- warnings = 0;
- if(num_blocks == 4) break;
- }
- memcpy(outBlocks, Blocks, 16*num_blocks);
- return num_blocks;
+ memcpy(outBlocks, Blocks, 16*num_blocks);
+ return num_blocks;
}
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
+ // 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 ?
+ 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;
+ return 0;
}
int IsBlock1PCF7931(uint8_t *Block) {
- // Assume RFU means 0 :)
- if(Block[10] == 0 && Block[11] == 0 && Block[12] == 0 && Block[13] == 0)
+ // 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;
-
- return 0;
+
+ return 0;
}
-
#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 {
+ 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)
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]);
+ 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;
- }
- }
+ 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;
- }
- }
- }
- }
- }
+ 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++) {
+ } 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]);
+ 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 ;
+ }
+ Dbprintf("-----------------------------------------");
+
+ return ;
}
//-----------------------------------
-// EM4469 / EM4305 routines
+// EM4469 / EM4305 routines
//-----------------------------------
-#define FWD_CMD_LOGIN 0xC //including the even parity, binary mirrored
-#define FWD_CMD_WRITE 0xA
-#define FWD_CMD_READ 0x9
-#define FWD_CMD_DISABLE 0x5
+#define FWD_CMD_LOGIN 0xC //including the even parity, binary mirrored
+#define FWD_CMD_WRITE 0xA
+#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 * fwd_write_ptr; //forwardlink bit pointer
+
+//====================================================================
+// prepares command bits
+// see EM4469 spec
+//====================================================================
+//--------------------------------------------------------------------
+uint8_t Prepare_Cmd( uint8_t cmd ) {
+ //--------------------------------------------------------------------
+
+ *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;
+
+ return 6; //return number of emited bits
+}
+//====================================================================
+// prepares address bits
+// see EM4469 spec
+//====================================================================
-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 * fwd_write_ptr; //forwardlink bit pointer
-
-//====================================================================
-// prepares command bits
-// see EM4469 spec
-//====================================================================
-//--------------------------------------------------------------------
-uint8_t Prepare_Cmd( uint8_t cmd ) {
-//--------------------------------------------------------------------
-
- *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;
-
- return 6; //return number of emited bits
-}
-
-//====================================================================
-// prepares address bits
-// see EM4469 spec
-//====================================================================
-
-//--------------------------------------------------------------------
-uint8_t Prepare_Addr( uint8_t addr ) {
-//--------------------------------------------------------------------
-
- register uint8_t line_parity;
-
+//--------------------------------------------------------------------
+uint8_t Prepare_Addr( uint8_t addr ) {
+ //--------------------------------------------------------------------
+
+ register uint8_t line_parity;
+
uint8_t i;
line_parity = 0;
for(i=0;i<6;i++) {
- *forward_ptr++ = addr;
- line_parity ^= addr;
+ *forward_ptr++ = addr;
+ line_parity ^= addr;
addr >>= 1;
}
- *forward_ptr++ = (line_parity & 1);
-
- return 7; //return number of emited bits
-}
-
-//====================================================================
-// 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
-}
-
-//====================================================================
-// Forward Link send function
-// Requires: forwarLink_data filled with valid bits (1 bit per byte)
-// fwd_bit_count set with number of bits to be sent
-//====================================================================
-void SendForward(uint8_t fwd_bit_count) {
+ *forward_ptr++ = (line_parity & 1);
+
+ return 7; //return number of emited bits
+}
- fwd_write_ptr = forwardLink_data;
- fwd_bit_sz = fwd_bit_count;
+//====================================================================
+// prepares data bits intreleaved with parity bits
+// see EM4469 spec
+//====================================================================
- LED_D_ON();
+//--------------------------------------------------------------------
+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
+}
+//====================================================================
+// Forward Link send function
+// Requires: forwarLink_data filled with valid bits (1 bit per byte)
+// fwd_bit_count set with number of bits to be sent
+//====================================================================
+void SendForward(uint8_t fwd_bit_count) {
+
+ fwd_write_ptr = forwardLink_data;
+ fwd_bit_sz = fwd_bit_count;
+
+ LED_D_ON();
+
//Field on
- FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
- FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER);
-
- // Give it a bit of time for the resonant antenna to settle.
- // And for the tag to fully power up
- SpinDelay(150);
-
+ 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++;
+ 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_READER);//field on
+ 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)
+
+ // 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
+ 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_READER);//field on
+ 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)
}
- }
+ }
}
-void Login (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 );
- SendForward(fwd_bit_count);
+void EM4xLogin(uint32_t Password) {
- //Wait for command to complete
- SpinDelay(20);
-
-}
-
-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) Login(Pwd);
+
+ forward_ptr = forwardLink_data;
+ fwd_bit_count = Prepare_Cmd( FWD_CMD_LOGIN );
+ fwd_bit_count += Prepare_Data( Password&0xFFFF, Password>>16 );
+
+ SendForward(fwd_bit_count);
+
+ //Wait for command to complete
+ SpinDelay(20);
+
+}
- forward_ptr = forwardLink_data;
- fwd_bit_count = Prepare_Cmd( FWD_CMD_READ );
- fwd_bit_count += Prepare_Addr( Address );
+void EM4xReadWord(uint8_t Address, uint32_t Pwd, uint8_t PwdMode) {
+
+ uint8_t *dest = (uint8_t *)BigBuf;
+ uint16_t bufferlength = 12000;
+ uint32_t i = 0;
- m = sizeof(BigBuf);
- // Clear destination buffer before sending the command
- memset(dest, 128, m);
+ // Clear destination buffer before sending the command 0x80 = average.
+ memset(dest, 0x80, bufferlength);
+
+ uint8_t fwd_bit_count;
+
+ //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
+ SendForward(fwd_bit_count);
+
+ // // Turn field on to read the response
+ // TurnReadLFOn();
+
+ // Now do the acquisition
i = 0;
for(;;) {
if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_TXRDY) {
}
if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_RXRDY) {
dest[i] = (uint8_t)AT91C_BASE_SSC->SSC_RHR;
- i++;
- if (i >= m) break;
+ ++i;
+ if (i >= bufferlength) break;
}
}
- FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
+
+ cmd_send(CMD_ACK,0,0,0,0,0);
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
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;
-
+
//If password mode do login
- if (PwdMode == 1) Login(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 );
-
- SendForward(fwd_bit_count);
+ if (PwdMode == 1) EM4xLogin(Pwd);
- //Wait for write to complete
- SpinDelay(20);
+ 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);
+
+ //Wait for write to complete
+ SpinDelay(20);
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
- LED_D_OFF();
+ LED_D_OFF();
}
-
projects / proxmark3-svn / blobdiff