sample_config sc = { 0,0,1, divisor_used, 0};
setSamplingConfig(&sc);
- /* Make sure the tag is reset */
- FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
- FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
- SpinDelay(2500);
+ /* 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);
+ // And a little more time for the tag to fully power up
+ SpinDelay(2000);
// now modulate the reader field
while(*command != '\0' && *command != ' ') {
DoAcquisition_config(false);
}
-
-
/* blank r/w tag data stream
...0000000000000000 01111111
1010101010101010101010101010101010101010101010101010101010101010
DbpString("Now use tiread to check");
}
-void SimulateTagLowFrequency(int period, int gap, int ledcontrol)
+void SimulateTagLowFrequency(uint16_t period, uint32_t gap, uint8_t ledcontrol)
{
int i;
uint8_t *tab = BigBuf_get_addr();
if (encoding==2){ //biphase
uint8_t phase=0;
- for (i=0; i<size; i++){
+ 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++){
+ for (i=0; i<size; i++){
biphaseSimBit(BitStream[i]^invert, &n, clk, &phase);
}
}
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);
- }
+ }
}
}
if (ledcontrol) LED_A_ON();
DoAcquisition_default(-1,true);
- // FSK demodulator
+ // FSK demodulator
size = sizeOfBigBuff; //variable size will change after demod so re initialize it before use
idx = HIDdemodFSK(dest, &size, &hi2, &hi, &lo);
{
uint8_t *dest = BigBuf_get_addr();
- size_t size=0, idx=0;
+ size_t size=0, idx=0;
int clk=0, invert=0, errCnt=0, maxErr=20;
uint32_t hi=0;
uint64_t lo=0;
WDT_HIT();
if (ledcontrol) LED_A_ON();
- DoAcquisition_default(-1,true);
+ DoAcquisition_default(-1,true);
size = BigBuf_max_traceLen();
//Dbprintf("DEBUG: Buffer got");
- //askdemod and manchester decode
- errCnt = askmandemod(dest, &size, &clk, &invert, maxErr);
+ //askdemod and manchester decode
+ errCnt = askmandemod(dest, &size, &clk, &invert, maxErr);
//Dbprintf("DEBUG: ASK Got");
WDT_HIT();
(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));
- }
+ 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();
uint8_t version=0;
uint8_t facilitycode=0;
uint16_t number=0;
+ uint8_t crc = 0;
+ uint16_t calccrc = 0;
// Configure to go in 125Khz listen mode
LFSetupFPGAForADC(95, true);
WDT_HIT();
if (ledcontrol) LED_A_ON();
DoAcquisition_default(-1,true);
- //fskdemod and get start index
+ //fskdemod and get start index
WDT_HIT();
idx = IOdemodFSK(dest, BigBuf_max_traceLen());
if (idx>0){
//| | | | | | |
//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
+ //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 checksum 11
//
+ //Checksum:
+ //00000000 0 11110000 1 11100000 1 00000001 1 00000011 1 10110110 1 01110101 11
+ //preamble F0 E0 01 03 B6 75
+ // How to calc checksum,
+ // http://www.proxmark.org/forum/viewtopic.php?id=364&p=6
+ // F0 + E0 + 01 + 03 + B6 = 28A
+ // 28A & FF = 8A
+ // FF - 8A = 75
+ // Checksum: 0x75
//XSF(version)facility:codeone+codetwo
//Handle the data
if(findone){ //only print binary if we are doing one
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);
+ crc = bytebits_to_byte(dest+idx+54,8);
+ for (uint8_t i=1; i<6; ++i)
+ calccrc += bytebits_to_byte(dest+idx+9*i,8);
+ calccrc &= 0xff;
+ calccrc = 0xff - calccrc;
+
+ char *crcStr = (crc == calccrc) ? "ok":"!crc";
+
+ Dbprintf("IO Prox XSF(%02d)%02x:%05d (%08x%08x) [%02x %s]",version,facilitycode,number,code,code2, crc, crcStr);
// if we're only looking for one tag
if (findone){
if (ledcontrol) LED_A_OFF();
* and enlarge the gap ones.
*/
#define START_GAP 50*8 // 10 - 50fc 250
-#define WRITE_GAP 20*8 // - 30fc 160
-#define WRITE_0 24*8 // 16 - 63fc 54fc 144
-#define WRITE_1 54*8 // 48 - 63fc 54fc 432 for T55x7; 448 for E5550 //400
+#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)
-#define T55xx_SAMPLES_SIZE 12000 // 32 x 32 x 10 (32 bit times numofblock (7), times clock skip..)
+// These timings work for 4469/4269/4305 (with the 55*8 above)
+// WRITE_0 = 23*8 , 9*8 SpinDelayUs(23*8);
+
+// 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
+// 1 Cycle = 8 microseconds(us)
+
+#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_ADC | FPGA_LF_ADC_READER_FIELD);
- if (bit == 0)
+ if (!bit)
SpinDelayUs(WRITE_0);
else
SpinDelayUs(WRITE_1);
LED_D_OFF();
if (i >= bufferlength) break;
- }
- }
-
+ }
+ }
+
+ cmd_send(CMD_ACK,0,0,0,0,0);
cmd_send(CMD_ACK,0,0,0,0,0);
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
LED_D_OFF();
}
+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)
#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 = BigBuf_get_addr();
- int GraphTraceLen = BigBuf_max_traceLen();
+
+ uint8_t bits[256] = {0x00};
+ uint8_t blocks[8][16];
+ uint8_t *dest = BigBuf_get_addr();
+
+ int GraphTraceLen = BigBuf_max_traceLen();
+ if ( GraphTraceLen > 18000 )
+ GraphTraceLen = 18000;
+
+
int i, j, lastval, bitidx, half_switch;
int clock = 64;
int tolerance = clock / 8;
uint8_t dir;
LFSetupFPGAForADC(95, true);
- DoAcquisition_default(0, 0);
-
+ DoAcquisition_default(0, true);
lmin = 64;
lmax = 192;
i = 2;
/* Find first local max/min */
- if(GraphBuffer[1] > GraphBuffer[0]) {
+ if(dest[1] > dest[0]) {
while(i < GraphTraceLen) {
- if( !(GraphBuffer[i] > GraphBuffer[i-1]) && GraphBuffer[i] > lmax)
+ if( !(dest[i] > dest[i-1]) && dest[i] > lmax)
break;
i++;
}
}
else {
while(i < GraphTraceLen) {
- if( !(GraphBuffer[i] < GraphBuffer[i-1]) && GraphBuffer[i] < lmin)
+ if( !(dest[i] < dest[i-1]) && dest[i] < lmin)
break;
i++;
}
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))
+ if ( (dest[i-1] > dest[i] && dir == 1 && dest[i] > lmax) || (dest[i-1] < dest[i] && dir == 0 && dest[i] < lmin))
{
lc = i - lastval;
lastval = i;
block_done = 1;
}
else if(half_switch == 1) {
- BitStream[bitidx++] = 0;
+ bits[bitidx++] = 0;
half_switch = 0;
}
else
half_switch++;
} else if (abs(lc-clock) < tolerance) {
// 64TO
- BitStream[bitidx++] = 1;
+ bits[bitidx++] = 1;
} else {
// Error
warnings++;
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];
+ blocks[num_blocks][j] = 128*bits[j*8+7]+
+ 64*bits[j*8+6]+
+ 32*bits[j*8+5]+
+ 16*bits[j*8+4]+
+ 8*bits[j*8+3]+
+ 4*bits[j*8+2]+
+ 2*bits[j*8+1]+
+ bits[j*8];
+
}
num_blocks++;
}
half_switch = 0;
}
if(i < GraphTraceLen)
- {
- if (GraphBuffer[i-1] > GraphBuffer[i]) dir=0;
- else dir = 1;
- }
+ dir =(dest[i-1] > dest[i]) ? 0 : 1;
}
if(bitidx==255)
bitidx=0;
warnings = 0;
if(num_blocks == 4) break;
}
- memcpy(outBlocks, Blocks, 16*num_blocks);
+ memcpy(outBlocks, blocks, 16*num_blocks);
return num_blocks;
}
void EM4xReadWord(uint8_t Address, uint32_t Pwd, uint8_t PwdMode) {
+ uint8_t *dest = BigBuf_get_addr();
+ uint16_t bufferlength = BigBuf_max_traceLen();
+ uint32_t i = 0;
+
+ // Clear destination buffer before sending the command 0x80 = average.
+ memset(dest, 0x80, bufferlength);
+
uint8_t fwd_bit_count;
- uint8_t *dest = BigBuf_get_addr();
- int m=0, i=0;
//If password mode do login
if (PwdMode == 1) EM4xLogin(Pwd);
fwd_bit_count = Prepare_Cmd( FWD_CMD_READ );
fwd_bit_count += Prepare_Addr( Address );
- m = BigBuf_max_traceLen();
- // 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.
}
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;
+ }
+ }
+
+ cmd_send(CMD_ACK,0,0,0,0,0);
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
LED_D_OFF();
}
projects / proxmark3-svn / blobdiff