// split into two routines so we can avoid timing issues after sending commands //
void DoAcquisition125k_internal(int trigger_threshold, bool silent)
{
- uint8_t *dest = get_bigbufptr_recvrespbuf();
+ uint8_t *dest = (uint8_t *)BigBuf;
uint16_t i = 0;
- memset(dest, 0x00, FREE_BUFFER_SIZE);
+ memset(dest, 0x00, BIGBUF_SIZE);
for(;;) {
if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_TXRDY) {
continue;
else
trigger_threshold = -1;
- if (++i >= FREE_BUFFER_SIZE) break;
+ if (++i >= BIGBUF_SIZE) break;
}
}
if (!silent){
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;
void SimulateTagLowFrequencyA(int len, int gap)
{
- //Dbprintf("LEN %d || Gap %d",len, gap);
-
uint8_t *buf = (uint8_t *)BigBuf;
FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
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;
// simulate a HID tag until the button is pressed
void CmdHIDsimTAG(int hi, int lo, uint8_t ledcontrol)
{
- uint16_t 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
// 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 = get_bigbufptr_recvrespbuf();
-
- size_t size=0; //, found=0;
- uint32_t hi2=0, hi=0, lo=0;
+ uint8_t *dest = (uint8_t *)BigBuf;
+ uint32_t hi2 = 0, hi = 0, lo = 0;
// Configure to go in 125Khz listen mode
LFSetupFPGAForADC(0, true);
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);
+ // FSK demodulator
+ int bitLen = HIDdemodFSK(dest,BIGBUF_SIZE,&hi2,&hi,&lo);
WDT_HIT();
- if (bitLen>0 && lo>0){
+ 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;
+
+ 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
+ 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);
+ }
}
- // reset
- hi2 = hi = lo = 0;
+ 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();
- //SpinDelay(50);
}
DbpString("Stopped");
if (ledcontrol) LED_A_OFF();
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;
+ 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);
+ LFSetupFPGAForADC(0, true);
while(!BUTTON_PRESS()) {
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();
+ bitLen = BIGBUF_SIZE;
+ errCnt = askmandemod(dest,&bitLen,&clk,&invert);
+ if ( errCnt < 0 ) continue;
- 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();
+ 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;
- }
- } else {
- //Dbprintf("DEBUG: No Tag");
}
+
WDT_HIT();
- lo = 0;
- clk=0;
- invert=0;
- errCnt=0;
- size=0;
- //SpinDelay(50);
+ 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;
- size_t size=0;
- 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
+ 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);
- size = sizeof(BigBuf);
- //make sure buffer has data
- if (size < 2000) continue;
- //fskdemod and get start index
- WDT_HIT();
- idx = IOdemodFSK(dest,size);
- if (idx>0){
- //valid tag found
+ DoAcquisition125k_internal(-1, true);
+
+ idx = IOdemodFSK(dest, BIGBUF_SIZE);
+
+ if ( idx < 0 )
+ continue;
+
+ WDT_HIT();
//Index map
//0 10 20 30 40 50 60
//
//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();
+
+ 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;
}
- WDT_HIT();
+ code = code2 = 0;
+ version = facilitycode = 0;
+ number = 0;
+ idx = 0;
}
+
DbpString("Stopped");
if (ledcontrol) LED_A_OFF();
}
projects / proxmark3-svn / blobdiff