- char cmdp = param_getchar(Cmd, 0);
- if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
- PrintAndLog("Usage: data rawdemod fs [clock] <invert> [fchigh] [fclow]");
- PrintAndLog(" [set clock as integer] optional, omit for autodetect.");
- PrintAndLog(" <invert>, 1 for invert output, can be used even if the clock is omitted");
- PrintAndLog(" [fchigh], larger field clock length, omit for autodetect");
- PrintAndLog(" [fclow], small field clock length, omit for autodetect");
- PrintAndLog("");
- PrintAndLog(" sample: data rawdemod fs = demod an fsk tag from GraphBuffer using autodetect");
- PrintAndLog(" : data rawdemod fs 32 = demod an fsk tag from GraphBuffer using a clock of RF/32, autodetect fc");
- PrintAndLog(" : data rawdemod fs 1 = demod an fsk tag from GraphBuffer using autodetect, invert output");
- PrintAndLog(" : data rawdemod fs 32 1 = demod an fsk tag from GraphBuffer using a clock of RF/32, invert output, autodetect fc");
- PrintAndLog(" : data rawdemod fs 64 0 8 5 = demod an fsk1 RF/64 tag from GraphBuffer");
- PrintAndLog(" : data rawdemod fs 50 0 10 8 = demod an fsk2 RF/50 tag from GraphBuffer");
- PrintAndLog(" : data rawdemod fs 50 1 10 8 = demod an fsk2a RF/50 tag from GraphBuffer");
- return 0;
- }
- return FSKrawDemod(Cmd, TRUE);
-}
-
-//by marshmellow (based on existing demod + holiman's refactor)
-//HID Prox demod - FSK RF/50 with preamble of 00011101 (then manchester encoded)
-//print full HID Prox ID and some bit format details if found
-int CmdFSKdemodHID(const char *Cmd)
-{
- //raw fsk demod no manchester decoding no start bit finding just get binary from wave
- uint32_t hi2=0, hi=0, lo=0;
-
- uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
- size_t BitLen = getFromGraphBuf(BitStream);
- if (BitLen==0) return 0;
- //get binary from fsk wave
- int idx = HIDdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
- if (idx<0){
- if (g_debugMode){
- if (idx==-1){
- PrintAndLog("DEBUG: Just Noise Detected");
- } else if (idx == -2) {
- PrintAndLog("DEBUG: Error demoding fsk");
- } else if (idx == -3) {
- PrintAndLog("DEBUG: Preamble not found");
- } else if (idx == -4) {
- PrintAndLog("DEBUG: Error in Manchester data, SIZE: %d", BitLen);
- } else {
- PrintAndLog("DEBUG: Error demoding fsk %d", idx);
- }
- }
- return 0;
- }
- if (hi2==0 && hi==0 && lo==0) {
- if (g_debugMode) PrintAndLog("DEBUG: Error - no values found");
- return 0;
- }
- if (hi2 != 0){ //extra large HID tags
- PrintAndLog("HID Prox 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 fmtLen = 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++;
- }
- fmtLen =idx3+19;
- fc =0;
- cardnum=0;
- if(fmtLen==26){
- cardnum = (lo>>1)&0xFFFF;
- fc = (lo>>17)&0xFF;
- }
- if(fmtLen==34){
- cardnum = (lo>>1)&0xFFFF;
- fc= ((hi&1)<<15)|(lo>>17);
- }
- if(fmtLen==35){
- cardnum = (lo>>1)&0xFFFFF;
- fc = ((hi&1)<<11)|(lo>>21);
- }
- }
- else { //if bit 38 is not set then 37 bit format is used
- fmtLen = 37;
- fc = 0;
- cardnum = 0;
- if(fmtLen == 37){
- cardnum = (lo>>1)&0x7FFFF;
- fc = ((hi&0xF)<<12)|(lo>>20);
- }
- }
- PrintAndLog("HID Prox 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) fmtLen, (unsigned int) fc, (unsigned int) cardnum);
- }
- setDemodBuf(BitStream,BitLen,idx);
- if (g_debugMode){
- PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
- printDemodBuff();
- }
- return 1;
-}
-
-//by marshmellow
-//Paradox Prox demod - FSK RF/50 with preamble of 00001111 (then manchester encoded)
-//print full Paradox Prox ID and some bit format details if found
-int CmdFSKdemodParadox(const char *Cmd)
-{
- //raw fsk demod no manchester decoding no start bit finding just get binary from wave
- uint32_t hi2=0, hi=0, lo=0;
-
- uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
- size_t BitLen = getFromGraphBuf(BitStream);
- if (BitLen==0) return 0;
- //get binary from fsk wave
- int idx = ParadoxdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
- if (idx<0){
- if (g_debugMode){
- if (idx==-1){
- PrintAndLog("DEBUG: Just Noise Detected");
- } else if (idx == -2) {
- PrintAndLog("DEBUG: Error demoding fsk");
- } else if (idx == -3) {
- PrintAndLog("DEBUG: Preamble not found");
- } else if (idx == -4) {
- PrintAndLog("DEBUG: Error in Manchester data");
- } else {
- PrintAndLog("DEBUG: Error demoding fsk %d", idx);
- }
- }
- return 0;
- }
- if (hi2==0 && hi==0 && lo==0){
- if (g_debugMode) PrintAndLog("DEBUG: Error - no value found");
- return 0;
- }
- uint32_t fc = ((hi & 0x3)<<6) | (lo>>26);
- uint32_t cardnum = (lo>>10)&0xFFFF;
- uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
- uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
- uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
-
- PrintAndLog("Paradox TAG ID: %x%08x - FC: %d - Card: %d - Checksum: %02x - RAW: %08x%08x%08x",
- hi>>10, (hi & 0x3)<<26 | (lo>>10), fc, cardnum, (lo>>2) & 0xFF, rawHi2, rawHi, rawLo);
- setDemodBuf(BitStream,BitLen,idx);
- if (g_debugMode){
- PrintAndLog("DEBUG: idx: %d, len: %d, Printing Demod Buffer:", idx, BitLen);
- printDemodBuff();
- }
- return 1;
-}
-
-//by marshmellow
-//IO-Prox demod - FSK RF/64 with preamble of 000000001
-//print ioprox ID and some format details
-int CmdFSKdemodIO(const char *Cmd)
-{
- //raw fsk demod no manchester decoding no start bit finding just get binary from wave
- //set defaults
- int idx=0;
- //something in graphbuffer?
- if (GraphTraceLen < 65) {
- if (g_debugMode)PrintAndLog("DEBUG: not enough samples in GraphBuffer");
- return 0;
- }
- uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
- size_t BitLen = getFromGraphBuf(BitStream);
- if (BitLen==0) return 0;
-
- //get binary from fsk wave
- idx = IOdemodFSK(BitStream,BitLen);
- if (idx<0){
- if (g_debugMode){
- if (idx==-1){
- PrintAndLog("DEBUG: Just Noise Detected");
- } else if (idx == -2) {
- PrintAndLog("DEBUG: not enough samples");
- } else if (idx == -3) {
- PrintAndLog("DEBUG: error during fskdemod");
- } else if (idx == -4) {
- PrintAndLog("DEBUG: Preamble not found");
- } else if (idx == -5) {
- PrintAndLog("DEBUG: Separator bits not found");
- } else {
- PrintAndLog("DEBUG: Error demoding fsk %d", idx);
- }
- }
- return 0;
- }
- if (idx==0){
- if (g_debugMode==1){
- PrintAndLog("DEBUG: IO Prox Data not found - FSK Bits: %d",BitLen);
- if (BitLen > 92) printBitStream(BitStream,92);
- }
- return 0;
- }
- //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 (raw)
- //Handle the data
- if (idx+64>BitLen) {
- if (g_debugMode==1) PrintAndLog("not enough bits found - bitlen: %d",BitLen);
- return 0;
- }
- PrintAndLog("%d%d%d%d%d%d%d%d %d",BitStream[idx], BitStream[idx+1], BitStream[idx+2], BitStream[idx+3], BitStream[idx+4], BitStream[idx+5], BitStream[idx+6], BitStream[idx+7], BitStream[idx+8]);
- PrintAndLog("%d%d%d%d%d%d%d%d %d",BitStream[idx+9], BitStream[idx+10], BitStream[idx+11],BitStream[idx+12],BitStream[idx+13],BitStream[idx+14],BitStream[idx+15],BitStream[idx+16],BitStream[idx+17]);
- PrintAndLog("%d%d%d%d%d%d%d%d %d facility",BitStream[idx+18], BitStream[idx+19], BitStream[idx+20],BitStream[idx+21],BitStream[idx+22],BitStream[idx+23],BitStream[idx+24],BitStream[idx+25],BitStream[idx+26]);
- PrintAndLog("%d%d%d%d%d%d%d%d %d version",BitStream[idx+27], BitStream[idx+28], BitStream[idx+29],BitStream[idx+30],BitStream[idx+31],BitStream[idx+32],BitStream[idx+33],BitStream[idx+34],BitStream[idx+35]);
- PrintAndLog("%d%d%d%d%d%d%d%d %d code1",BitStream[idx+36], BitStream[idx+37], BitStream[idx+38],BitStream[idx+39],BitStream[idx+40],BitStream[idx+41],BitStream[idx+42],BitStream[idx+43],BitStream[idx+44]);
- PrintAndLog("%d%d%d%d%d%d%d%d %d code2",BitStream[idx+45], BitStream[idx+46], BitStream[idx+47],BitStream[idx+48],BitStream[idx+49],BitStream[idx+50],BitStream[idx+51],BitStream[idx+52],BitStream[idx+53]);
- PrintAndLog("%d%d%d%d%d%d%d%d %d%d checksum",BitStream[idx+54],BitStream[idx+55],BitStream[idx+56],BitStream[idx+57],BitStream[idx+58],BitStream[idx+59],BitStream[idx+60],BitStream[idx+61],BitStream[idx+62],BitStream[idx+63]);
-
- uint32_t code = bytebits_to_byte(BitStream+idx,32);
- uint32_t code2 = bytebits_to_byte(BitStream+idx+32,32);
- uint8_t version = bytebits_to_byte(BitStream+idx+27,8); //14,4
- uint8_t facilitycode = bytebits_to_byte(BitStream+idx+18,8) ;
- uint16_t number = (bytebits_to_byte(BitStream+idx+36,8)<<8)|(bytebits_to_byte(BitStream+idx+45,8)); //36,9
- PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x)",version,facilitycode,number,code,code2);
- setDemodBuf(BitStream,64,idx);
- if (g_debugMode){
- PrintAndLog("DEBUG: idx: %d, Len: %d, Printing demod buffer:",idx,64);
- printDemodBuff();
- }
- return 1;
-}
-
-//by marshmellow
-//AWID Prox demod - FSK RF/50 with preamble of 00000001 (always a 96 bit data stream)
-//print full AWID Prox ID and some bit format details if found
-int CmdFSKdemodAWID(const char *Cmd)
-{
-
- //int verbose=1;
- //sscanf(Cmd, "%i", &verbose);
-
- //raw fsk demod no manchester decoding no start bit finding just get binary from wave
- uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
- size_t size = getFromGraphBuf(BitStream);
- if (size==0) return 0;
-
- //get binary from fsk wave
- int idx = AWIDdemodFSK(BitStream, &size);
- if (idx<=0){
- if (g_debugMode==1){
- if (idx == -1)
- PrintAndLog("DEBUG: Error - not enough samples");
- else if (idx == -2)
- PrintAndLog("DEBUG: Error - only noise found");
- else if (idx == -3)
- PrintAndLog("DEBUG: Error - problem during FSK demod");
- else if (idx == -4)
- PrintAndLog("DEBUG: Error - AWID preamble not found");
- else if (idx == -5)
- PrintAndLog("DEBUG: Error - Size not correct: %d", size);
- else
- PrintAndLog("DEBUG: Error %d",idx);
- }
- return 0;
- }
-
- // 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(BitStream+idx+64,32);
- uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
- uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
- setDemodBuf(BitStream,96,idx);
-
- size = removeParity(BitStream, idx+8, 4, 1, 88);
- if (size != 66){
- if (g_debugMode==1) PrintAndLog("DEBUG: Error - at parity check-tag size does not match AWID format");
- return 0;
- }
- // 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(BitStream,8);
- if (fmtLen==26){
- fc = bytebits_to_byte(BitStream+9, 8);
- cardnum = bytebits_to_byte(BitStream+17, 16);
- code1 = bytebits_to_byte(BitStream+8,fmtLen);
- PrintAndLog("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(BitStream+8+(fmtLen-17), 16);
- if (fmtLen>32){
- code1 = bytebits_to_byte(BitStream+8,fmtLen-32);
- code2 = bytebits_to_byte(BitStream+8+(fmtLen-32),32);
- PrintAndLog("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(BitStream+8,fmtLen);
- PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
- }
- }
- if (g_debugMode){
- PrintAndLog("DEBUG: idx: %d, Len: %d Printing Demod Buffer:", idx, 96);
- printDemodBuff();
- }
- //todo - convert hi2, hi, lo to demodbuffer for future sim/clone commands
- return 1;
-}
-
-//by marshmellow
-//Pyramid Prox demod - FSK RF/50 with preamble of 0000000000000001 (always a 128 bit data stream)
-//print full Farpointe Data/Pyramid Prox ID and some bit format details if found
-int CmdFSKdemodPyramid(const char *Cmd)
-{
- //raw fsk demod no manchester decoding no start bit finding just get binary from wave
- uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
- size_t size = getFromGraphBuf(BitStream);
- if (size==0) return 0;
-
- //get binary from fsk wave
- int idx = PyramiddemodFSK(BitStream, &size);
- if (idx < 0){
- if (g_debugMode==1){
- if (idx == -5)
- PrintAndLog("DEBUG: Error - not enough samples");
- else if (idx == -1)
- PrintAndLog("DEBUG: Error - only noise found");
- else if (idx == -2)
- PrintAndLog("DEBUG: Error - problem during FSK demod");
- else if (idx == -3)
- PrintAndLog("DEBUG: Error - Size not correct: %d", size);
- else if (idx == -4)
- PrintAndLog("DEBUG: Error - Pyramid preamble not found");
- else
- PrintAndLog("DEBUG: Error - idx: %d",idx);
- }
- return 0;
- }
- // Index map
- // 0 10 20 30 40 50 60
- // | | | | | | |
- // 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3
- // -----------------------------------------------------------------------------
- // 0000000 0 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1
- // premable xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o
-
- // 64 70 80 90 100 110 120
- // | | | | | | |
- // 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7
- // -----------------------------------------------------------------------------
- // 0000000 1 0000000 1 0000000 1 0110111 0 0011000 1 0000001 0 0001100 1 1001010 0
- // xxxxxxx o xxxxxxx o xxxxxxx o xswffff o ffffccc o ccccccc o ccccccw o ppppppp o
- // |---115---||---------71---------|
- // s = format start bit, o = odd parity of last 7 bits
- // f = facility code, c = card number
- // w = wiegand parity, x = extra space for other formats
- // p = unknown checksum
- // (26 bit format shown)
-
- //get bytes for checksum calc
- uint8_t checksum = bytebits_to_byte(BitStream + idx + 120, 8);
- uint8_t csBuff[14] = {0x00};
- for (uint8_t i = 0; i < 13; i++){
- csBuff[i] = bytebits_to_byte(BitStream + idx + 16 + (i*8), 8);
- }
- //check checksum calc
- //checksum calc thanks to ICEMAN!!
- uint32_t checkCS = CRC8Maxim(csBuff,13);
-
- //get raw ID before removing parities
- uint32_t rawLo = bytebits_to_byte(BitStream+idx+96,32);
- uint32_t rawHi = bytebits_to_byte(BitStream+idx+64,32);
- uint32_t rawHi2 = bytebits_to_byte(BitStream+idx+32,32);
- uint32_t rawHi3 = bytebits_to_byte(BitStream+idx,32);
- setDemodBuf(BitStream,128,idx);
-
- size = removeParity(BitStream, idx+8, 8, 1, 120);
- if (size != 105){
- if (g_debugMode==1)
- PrintAndLog("DEBUG: Error at parity check - tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %x",size, idx, rawHi3);
- return 0;
- }
-
- // ok valid card found!
-
- // Index map
- // 0 10 20 30 40 50 60 70
- // | | | | | | | |
- // 01234567890123456789012345678901234567890123456789012345678901234567890
- // -----------------------------------------------------------------------
- // 00000000000000000000000000000000000000000000000000000000000000000000000
- // xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
-
- // 71 80 90 100
- // | | | |
- // 1 2 34567890 1234567890123456 7 8901234
- // ---------------------------------------
- // 1 1 01110011 0000000001000110 0 1001010
- // s w ffffffff cccccccccccccccc w ppppppp
- // |--115-| |------71------|
- // s = format start bit, o = odd parity of last 7 bits
- // f = facility code, c = card number
- // w = wiegand parity, x = extra space for other formats
- // p = unknown checksum
- // (26 bit format shown)
-
- //find start bit to get fmtLen
- int j;
- for (j=0; j<size; j++){
- if(BitStream[j]) break;
- }
- uint8_t fmtLen = size-j-8;
- uint32_t fc = 0;
- uint32_t cardnum = 0;
- uint32_t code1 = 0;
- //uint32_t code2 = 0;
- if (fmtLen==26){
- fc = bytebits_to_byte(BitStream+73, 8);
- cardnum = bytebits_to_byte(BitStream+81, 16);
- code1 = bytebits_to_byte(BitStream+72,fmtLen);
- PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi3, rawHi2, rawHi, rawLo);
- } else if (fmtLen==45){
- fmtLen=42; //end = 10 bits not 7 like 26 bit fmt
- fc = bytebits_to_byte(BitStream+53, 10);
- cardnum = bytebits_to_byte(BitStream+63, 32);
- PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, rawHi3, rawHi2, rawHi, rawLo);
- } else {
- cardnum = bytebits_to_byte(BitStream+81, 16);
- if (fmtLen>32){
- //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen-32);
- //code2 = bytebits_to_byte(BitStream+(size-32),32);
- PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
- } else{
- //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen);
- PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
- }
- }
- if (checksum == checkCS)
- PrintAndLog("Checksum %02x passed", checksum);
- else
- PrintAndLog("Checksum %02x failed - should have been %02x", checksum, checkCS);
-
- if (g_debugMode){
- PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, 128);
- printDemodBuff();
- }
- return 1;
-}
-
-int CmdFSKdemod(const char *Cmd) //old CmdFSKdemod needs updating
-{
- static const int LowTone[] = {
- 1, 1, 1, 1, 1, -1, -1, -1, -1, -1,
- 1, 1, 1, 1, 1, -1, -1, -1, -1, -1,
- 1, 1, 1, 1, 1, -1, -1, -1, -1, -1,
- 1, 1, 1, 1, 1, -1, -1, -1, -1, -1,
- 1, 1, 1, 1, 1, -1, -1, -1, -1, -1
- };
- static const int HighTone[] = {
- 1, 1, 1, 1, 1, -1, -1, -1, -1,
- 1, 1, 1, 1, -1, -1, -1, -1,
- 1, 1, 1, 1, -1, -1, -1, -1,
- 1, 1, 1, 1, -1, -1, -1, -1,
- 1, 1, 1, 1, -1, -1, -1, -1,
- 1, 1, 1, 1, -1, -1, -1, -1, -1,
- };
-
- int lowLen = sizeof (LowTone) / sizeof (int);
- int highLen = sizeof (HighTone) / sizeof (int);
- int convLen = (highLen > lowLen) ? highLen : lowLen;
- uint32_t hi = 0, lo = 0;
-
- int i, j;
- int minMark = 0, maxMark = 0;
-
- for (i = 0; i < GraphTraceLen - convLen; ++i) {
- int lowSum = 0, highSum = 0;
-
- for (j = 0; j < lowLen; ++j) {
- lowSum += LowTone[j]*GraphBuffer[i+j];
- }
- for (j = 0; j < highLen; ++j) {
- highSum += HighTone[j] * GraphBuffer[i + j];
- }
- lowSum = abs(100 * lowSum / lowLen);
- highSum = abs(100 * highSum / highLen);
- GraphBuffer[i] = (highSum << 16) | lowSum;
- }
-
- for(i = 0; i < GraphTraceLen - convLen - 16; ++i) {
- int lowTot = 0, highTot = 0;
- // 10 and 8 are f_s divided by f_l and f_h, rounded
- for (j = 0; j < 10; ++j) {
- lowTot += (GraphBuffer[i+j] & 0xffff);
- }
- for (j = 0; j < 8; j++) {
- highTot += (GraphBuffer[i + j] >> 16);
- }
- GraphBuffer[i] = lowTot - highTot;
- if (GraphBuffer[i] > maxMark) maxMark = GraphBuffer[i];
- if (GraphBuffer[i] < minMark) minMark = GraphBuffer[i];
- }
-
- GraphTraceLen -= (convLen + 16);
- RepaintGraphWindow();
-
- // Find bit-sync (3 lo followed by 3 high) (HID ONLY)
- int max = 0, maxPos = 0;
- for (i = 0; i < 6000; ++i) {
- int dec = 0;
- for (j = 0; j < 3 * lowLen; ++j) {
- dec -= GraphBuffer[i + j];
- }
- for (; j < 3 * (lowLen + highLen ); ++j) {
- dec += GraphBuffer[i + j];
- }
- if (dec > max) {
- max = dec;
- maxPos = i;
- }
- }
-
- // place start of bit sync marker in graph
- GraphBuffer[maxPos] = maxMark;
- GraphBuffer[maxPos + 1] = minMark;
-
- maxPos += j;
-
- // place end of bit sync marker in graph
- GraphBuffer[maxPos] = maxMark;
- GraphBuffer[maxPos+1] = minMark;
-
- PrintAndLog("actual data bits start at sample %d", maxPos);
- PrintAndLog("length %d/%d", highLen, lowLen);
-
- uint8_t bits[46] = {0x00};
-
- // find bit pairs and manchester decode them
- for (i = 0; i < arraylen(bits) - 1; ++i) {
- int dec = 0;
- for (j = 0; j < lowLen; ++j) {
- dec -= GraphBuffer[maxPos + j];
- }
- for (; j < lowLen + highLen; ++j) {
- dec += GraphBuffer[maxPos + j];
- }
- maxPos += j;
- // place inter bit marker in graph
- GraphBuffer[maxPos] = maxMark;
- GraphBuffer[maxPos + 1] = minMark;
-
- // hi and lo form a 64 bit pair
- hi = (hi << 1) | (lo >> 31);
- lo = (lo << 1);
- // store decoded bit as binary (in hi/lo) and text (in bits[])
- if(dec < 0) {
- bits[i] = '1';
- lo |= 1;
- } else {
- bits[i] = '0';
- }
- }
- PrintAndLog("bits: '%s'", bits);
- PrintAndLog("hex: %08x %08x", hi, lo);
- return 0;