-int CmdFSKdemod(const char *Cmd)
-{
- 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)
- 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];
- bits[sizeof(bits)-1] = '\0';
-
- // 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;
+//by marshmellow
+//fsk raw demod and print binary
+//takes 4 arguments - Clock, invert, rchigh, rclow
+//defaults: clock = 50, invert=0, rchigh=10, rclow=8 (RF/10 RF/8 (fsk2a))
+int CmdFSKrawdemod(const char *Cmd)
+{
+ //raw fsk demod no manchester decoding no start bit finding just get binary from wave
+ //set defaults
+ int rfLen = 50;
+ int invert=0;
+ int fchigh=10;
+ int fclow=8;
+ //set options from parameters entered with the command
+ sscanf(Cmd, "%i %i %i %i", &rfLen, &invert, &fchigh, &fclow);
+
+ if (strlen(Cmd)>0 && strlen(Cmd)<=2) {
+ //rfLen=param_get8(Cmd, 0); //if rfLen option only is used
+ if (rfLen==1){
+ invert=1; //if invert option only is used
+ rfLen = 50;
+ } else if(rfLen==0) rfLen=50;
+ }
+ PrintAndLog("Args invert: %d - Clock:%d - fchigh:%d - fclow: %d",invert,rfLen,fchigh, fclow);
+ uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
+ size_t BitLen = getFromGraphBuf(BitStream);
+ int size = fskdemod(BitStream,BitLen,(uint8_t)rfLen,(uint8_t)invert,(uint8_t)fchigh,(uint8_t)fclow);
+ if (size>0){
+ PrintAndLog("FSK decoded bitstream:");
+ setDemodBuf(BitStream,size);
+
+ // Now output the bitstream to the scrollback by line of 16 bits
+ if(size > (8*32)+2) size = (8*32)+2; //only output a max of 8 blocks of 32 bits most tags will have full bit stream inside that sample size
+ printBitStream(BitStream,size);
+ } else{
+ PrintAndLog("no FSK data found");
+ }
+ return 0;
+}
+
+//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);
+ //get binary from fsk wave
+ size_t size = HIDdemodFSK(BitStream,BitLen,&hi2,&hi,&lo);
+ if (size<0){
+ PrintAndLog("Error demoding fsk");
+ return 0;
+ }
+ if (hi2==0 && hi==0 && lo==0) 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);
+ setDemodBuf(BitStream,BitLen);
+ return 1;
+ }
+ 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 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 & 15) << 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==37){
+ cardnum = (lo>>1)&0x7FFFF;
+ fc = ((hi&0xF)<<12)|(lo>>20);
+ }
+ 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);
+ return 1;
+ }
+ return 0;
+}
+
+//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) return 0;
+ uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
+ size_t BitLen = getFromGraphBuf(BitStream);
+ //get binary from fsk wave
+ // PrintAndLog("DEBUG: got buff");
+ idx = IOdemodFSK(BitStream,BitLen);
+ if (idx<0){
+ //PrintAndLog("Error demoding fsk");
+ return 0;
+ }
+ // PrintAndLog("DEBUG: Got IOdemodFSK");
+ if (idx==0){
+ //PrintAndLog("IO Prox Data not found - FSK Data:");
+ //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) 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);
+ int i;
+ for (i=0;i<64;++i)
+ DemodBuffer[i]=BitStream[idx++];
+
+ DemodBufferLen=64;
+ 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; //if highlen > lowLen then highlen else 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];
+ bits[sizeof(bits)-1] = '\0';
+
+ // 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;
+}
+
+int CmdDetectNRZpskClockRate(const char *Cmd)
+{
+ GetNRZpskClock("",0,0);
+ return 0;
+}
+
+int PSKnrzDemod(const char *Cmd){
+ int invert=0;
+ int clk=0;
+ sscanf(Cmd, "%i %i", &clk, &invert);
+ if (invert != 0 && invert != 1) {
+ PrintAndLog("Invalid argument: %s", Cmd);
+ return -1;
+ }
+ uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
+ size_t BitLen = getFromGraphBuf(BitStream);
+ int errCnt=0;
+ errCnt = pskNRZrawDemod(BitStream, &BitLen,&clk,&invert);
+ if (errCnt<0|| BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
+ //PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
+ return -1;
+ }
+ PrintAndLog("Tried PSK/NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
+
+ //prime demod buffer for output
+ setDemodBuf(BitStream,BitLen);
+ return errCnt;
+}
+// Indala 26 bit decode
+// by marshmellow
+// optional arguments - same as CmdpskNRZrawDemod (clock & invert)
+int CmdIndalaDecode(const char *Cmd)
+{
+
+ int ans=PSKnrzDemod(Cmd);
+ if (ans < 0){
+ PrintAndLog("Error1: %d",ans);
+ return 0;
+ }
+ uint8_t invert=0;
+ ans = indala26decode(DemodBuffer,(size_t *) &DemodBufferLen, &invert);
+ if (ans < 1) {
+ PrintAndLog("Error2: %d",ans);
+ return -1;
+ }
+ char showbits[251];
+ if(invert==1) PrintAndLog("Had to invert bits");
+ //convert UID to HEX
+ uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
+ int idx;
+ uid1=0;
+ uid2=0;
+ PrintAndLog("BitLen: %d",DemodBufferLen);
+ if (DemodBufferLen==64){
+ for( idx=0; idx<64; idx++) {
+ uid1=(uid1<<1)|(uid2>>31);
+ if (DemodBuffer[idx] == 0) {
+ uid2=(uid2<<1)|0;
+ showbits[idx]='0';
+ } else {
+ uid2=(uid2<<1)|1;
+ showbits[idx]='1';
+ }
+ }
+ showbits[idx]='\0';
+ PrintAndLog("Indala UID=%s (%x%08x)", showbits, uid1, uid2);
+ }
+ else {
+ uid3=0;
+ uid4=0;
+ uid5=0;
+ uid6=0;
+ uid7=0;
+ for( idx=0; idx<DemodBufferLen; idx++) {
+ uid1=(uid1<<1)|(uid2>>31);
+ uid2=(uid2<<1)|(uid3>>31);
+ uid3=(uid3<<1)|(uid4>>31);
+ uid4=(uid4<<1)|(uid5>>31);
+ uid5=(uid5<<1)|(uid6>>31);
+ uid6=(uid6<<1)|(uid7>>31);
+ if (DemodBuffer[idx] == 0) {
+ uid7=(uid7<<1)|0;
+ showbits[idx]='0';
+ }
+ else {
+ uid7=(uid7<<1)|1;
+ showbits[idx]='1';
+ }
+ }
+ showbits[idx]='\0';
+ PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)", showbits, uid1, uid2, uid3, uid4, uid5, uid6, uid7);
+ }
+ return 1;
+}
+
+int CmdPskClean(const char *Cmd)
+{
+ uint8_t bitStream[MAX_GRAPH_TRACE_LEN]={0};
+ size_t bitLen = getFromGraphBuf(bitStream);
+ pskCleanWave(bitStream, bitLen);
+ setGraphBuf(bitStream, bitLen);
+ return 0;
+}
+
+//by marshmellow
+//takes 2 arguments - clock and invert both as integers
+//attempts to demodulate ask only
+//prints binary found and saves in graphbuffer for further commands
+int CmdpskNRZrawDemod(const char *Cmd)
+{
+ int errCnt= PSKnrzDemod(Cmd);
+ //output
+ if (errCnt<0) return 0;
+ if (errCnt>0){
+ PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt);
+ }
+ PrintAndLog("PSK or NRZ demoded bitstream:");
+ // Now output the bitstream to the scrollback by line of 16 bits
+ printDemodBuff();
+
+ return 1;