- // 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++;
+void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol)
+{
+ 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;
+ uint8_t crc = 0;
+ uint16_t calccrc = 0;
+ // Configure to go in 125Khz listen mode
+ LFSetupFPGAForADC(95, true);
+
+ while(!BUTTON_PRESS()) {
+ 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 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
+ 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]);
projects / proxmark3-svn / blobdiff