X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/90d74dc206d876ed38632f3e9b3771dbe0c929fc..ea7d657f7512b95d7dc04f834ae01de021f5573e:/client/cmddata.c diff --git a/client/cmddata.c b/client/cmddata.c index a333fe39..6d151140 100644 --- a/client/cmddata.c +++ b/client/cmddata.c @@ -17,6 +17,7 @@ #include "ui.h" #include "graph.h" #include "cmdparser.h" +#include "util.h" #include "cmdmain.h" #include "cmddata.h" @@ -68,6 +69,9 @@ int CmdAmp(const char *Cmd) * Arguments: * c : 0 or 1 */ + //this method is dependant on all highs and lows to be the same(or clipped) this could be an issue[marshmellow] + //might be able to use clock to help identify highs and lows with some more tolerance + //but for now I will try a fuzz factor int Cmdaskdemod(const char *Cmd) { int i; @@ -78,7 +82,7 @@ int Cmdaskdemod(const char *Cmd) sscanf(Cmd, "%i", &c); /* Detect high and lows and clock */ - // (AL - clock???) + // (AL - clock???) for (i = 0; i < GraphTraceLen; ++i) { if (GraphBuffer[i] > high) @@ -90,12 +94,15 @@ int Cmdaskdemod(const char *Cmd) PrintAndLog("Invalid argument: %s", Cmd); return 0; } - + //prime loop if (GraphBuffer[0] > 0) { GraphBuffer[0] = 1-c; } else { GraphBuffer[0] = c; } + //13% fuzz [marshmellow] + high=(int)(0.87*high); + low=(int)(0.87*low); for (i = 1; i < GraphTraceLen; ++i) { /* Transitions are detected at each peak * Transitions are either: @@ -105,6 +112,7 @@ int Cmdaskdemod(const char *Cmd) * low for long periods, others just reach the peak and go * down) */ + //[marhsmellow] change == to >= for high and <= for low for fuzz if ((GraphBuffer[i] == high) && (GraphBuffer[i - 1] == c)) { GraphBuffer[i] = 1 - c; } else if ((GraphBuffer[i] == low) && (GraphBuffer[i - 1] == (1 - c))){ @@ -118,6 +126,145 @@ int Cmdaskdemod(const char *Cmd) return 0; } +void printBitStream(uint8_t BitStream[], uint32_t bitLen){ + uint32_t i = 0; + if (bitLen<16) return; + if (bitLen>512) bitLen=512; + for (i = 0; i < (bitLen-16); i+=16) { + PrintAndLog("%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i", + BitStream[i], + BitStream[i+1], + BitStream[i+2], + BitStream[i+3], + BitStream[i+4], + BitStream[i+5], + BitStream[i+6], + BitStream[i+7], + BitStream[i+8], + BitStream[i+9], + BitStream[i+10], + BitStream[i+11], + BitStream[i+12], + BitStream[i+13], + BitStream[i+14], + BitStream[i+15]); + } + return; +} + +//by marshmellow +//takes 2 arguments - clock and invert both as integers +//prints binary found and saves in graphbuffer for further commands +int Cmdaskrawdemod(const char *Cmd) +{ + uint32_t i; + int invert=0; //invert default + int high = 0, low = 0; + int clk=64; //clock default + uint8_t BitStream[MAX_GRAPH_TRACE_LEN] = {0}; + sscanf(Cmd, "%i %i", &clk, &invert); + if (!(clk>8)){ + PrintAndLog("Invalid argument: %s",Cmd); + return 0; + } + if (invert != 0 && invert != 1) { + PrintAndLog("Invalid argument: %s", Cmd); + return 0; + } + uint32_t initLoopMax = 1000; + if (initLoopMax>GraphTraceLen) initLoopMax=GraphTraceLen; + // Detect high and lows + PrintAndLog("Using Clock: %d and invert=%d",clk,invert); + for (i = 0; i < initLoopMax; ++i) //1000 samples should be plenty to find high and low values + { + if (GraphBuffer[i] > high) + high = GraphBuffer[i]; + else if (GraphBuffer[i] < low) + low = GraphBuffer[i]; + } + if ((high < 30) && ((high !=1)||(low !=-1))){ //throw away static - allow 1 and -1 (in case of threshold command first) + PrintAndLog("no data found"); + return 0; + } + //13% fuzz in case highs and lows aren't clipped [marshmellow] + high=(int)(0.75*high); + low=(int)(0.75*low); + + //PrintAndLog("valid high: %d - valid low: %d",high,low); + int lastBit = 0; //set first clock check + uint32_t bitnum = 0; //output counter + uint8_t tol = 32;//clock tolerance adjust + uint32_t iii = 0; + uint32_t gLen = GraphTraceLen; + if (gLen > 500) gLen=500; + uint8_t errCnt =0; + + //PrintAndLog("lastbit - %d",lastBit); + + //loop to find first wave that works + for (iii=0; iii < gLen; ++iii){ + if ((GraphBuffer[iii]>=high)||(GraphBuffer[iii]<=low)){ + lastBit=iii-clk; + //loop through to see if this start location works + for (i = iii; i < GraphTraceLen; ++i) { + if ((GraphBuffer[i] >= high) && ((i-lastBit)>(clk-((int)clk/tol)))) { // && GraphBuffer[i-1] < high + lastBit+=clk; + BitStream[bitnum] = invert; + bitnum++; + } else if ((GraphBuffer[i] <= low) && ((i-lastBit)>(clk-((int)clk/tol)))){ + //low found and we are expecting a bar + lastBit+=clk; + BitStream[bitnum] = 1-invert; + bitnum++; + } else { + //mid value found or no bar supposed to be here + if ((i-lastBit)>(clk+((int)(clk/tol)))){ + //should have hit a high or low based on clock!! + + /* + //debug + PrintAndLog("no wave in expected area - location: %d, expected: %d-%d, lastBit: %d - resetting search",i,(lastBit+(clk-((int)(clk/tol)))),(lastBit+(clk+((int)(clk/tol)))),lastBit); + if (bitnum > 0){ + BitStream[bitnum]=77; + bitnum++; + } + */ + + errCnt++; + lastBit+=clk;//skip over until hit too many errors + if (errCnt>((GraphTraceLen/1000)*2)){ //allow 2 errors for every 1000 samples else start over + errCnt=0; + bitnum=0;//start over + break; + } + } + } + } + + //debug + if ((bitnum>64) && (BitStream[bitnum-1]!=77)) break; + + } + } + ClearGraph(0); + //move BitStream back to GraphBuffer + for (i=0; i < bitnum; ++i){ + GraphBuffer[i]=BitStream[i]; + } + GraphTraceLen=bitnum; + RepaintGraphWindow(); + + //output + if (errCnt>0){ + PrintAndLog("# Error during Demoding: %d\n",errCnt); + } + PrintAndLog("ASK decoded bitstream:"); + // Now output the bitstream to the scrollback by line of 16 bits + printBitStream(BitStream,bitnum); + + return 0; +} + int CmdAutoCorr(const char *Cmd) { static int CorrelBuffer[MAX_GRAPH_TRACE_LEN]; @@ -263,7 +410,424 @@ int CmdDetectClockRate(const char *Cmd) return 0; } -int CmdFSKdemod(const char *Cmd) +//demod GraphBuffer wave to 0s and 1s for each wave - 0s for short waves 1s for long waves +size_t fsk_wave_demod(int size) +{ + uint32_t last_transition = 0; + uint32_t idx = 1; + uint32_t maxVal = 0; + // we don't care about actual value, only if it's more or less than a + // threshold essentially we capture zero crossings for later analysis + for(idx=1; idx1 transition + if (GraphBuffer[idx-1] < GraphBuffer[idx]) { // 0 -> 1 transition + if (idx-last_transition<6){ + // do nothing with extra garbage (shouldn't be any) noise tolerance? + } else if(idx-last_transition < 9) { + GraphBuffer[numBits]=1; + // Other fsk demods reverse this making the short waves 1 and long waves 0 + // this is really backwards... smaller waves will typically be 0 and larger 1 [marshmellow] + // but will leave as is and invert when needed later + } else{ + GraphBuffer[numBits]=0; + } + last_transition = idx; + numBits++; + // PrintAndLog("numbits %d",numBits); + } + } + return numBits; //Actually, it returns the number of bytes, but each byte represents a bit: 1 or 0 +} +uint32_t myround(float f) +{ + if (f >= UINT_MAX) return UINT_MAX; + return (uint32_t) (f + (float)0.5); +} +//translate 11111100000 to 10 +size_t aggregate_bits(int size, uint8_t rfLen, uint8_t maxConsequtiveBits, uint8_t invert) //,uint8_t l2h_crossing_value +{ + int lastval=GraphBuffer[0]; + uint32_t idx=0; + size_t numBits=0; + uint32_t n=1; + uint32_t n2=0; + for( idx=1; idx < size; idx++) { + + if (GraphBuffer[idx]==lastval) { + n++; + continue; + } + // if lastval was 1, we have a 1->0 crossing + if ( GraphBuffer[idx-1]==1 ) { + n=myround((float)(n+1)/((float)(rfLen)/(float)8)); //-2 noise tolerance + + // n=(n+1) / h2l_crossing_value; + //truncating could get us into trouble + //now we will try with actual clock (RF/64 or RF/50) variable instead + //then devide with float casting then truncate after more acurate division + //and round to nearest int + //like n = (((float)n)/(float)rfLen/(float)10); + } else {// 0->1 crossing + n=myround((float)(n+1)/((float)(rfLen-2)/(float)10)); // as int 120/6 = 20 as float 120/(64/10) = 18 (18.75) + //n=(n+1) / l2h_crossing_value; + } + if (n == 0) n = 1; //this should never happen... should we error if it does? + + if (n < maxConsequtiveBits) // Consecutive //when the consecutive bits are low - the noise tolerance can be high + //if it is high then we must be careful how much noise tolerance we allow + { + if (invert==0){ // do not invert bits + for (n2=0; n20 && 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; + } + if (strlen(Cmd)>2) { + rfLen=param_get8(Cmd, 0); //if both options are used + invert=param_get8(Cmd,1); + } + PrintAndLog("Args invert: %d \nClock:%d",invert,rfLen); + + size_t size = fskdemod(rfLen,invert); + + PrintAndLog("FSK decoded bitstream:"); + // Now output the bitstream to the scrollback by line of 16 bits + if(size > (7*32)+2) size = (7*32)+2; //only output a max of 7 blocks of 32 bits most tags will have full bit stream inside that sample size + + for (int i = 2; i < (size-16); i+=16) { + PrintAndLog("%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i", + GraphBuffer[i], + GraphBuffer[i+1], + GraphBuffer[i+2], + GraphBuffer[i+3], + GraphBuffer[i+4], + GraphBuffer[i+5], + GraphBuffer[i+6], + GraphBuffer[i+7], + GraphBuffer[i+8], + GraphBuffer[i+9], + GraphBuffer[i+10], + GraphBuffer[i+11], + GraphBuffer[i+12], + GraphBuffer[i+13], + GraphBuffer[i+14], + GraphBuffer[i+15]); + } + ClearGraph(1); + return 0; +} + +int CmdFSKdemodHID(const char *Cmd) +{ + //raw fsk demod no manchester decoding no start bit finding just get binary from wave + //set defaults + uint8_t rfLen = 50; + uint8_t invert=0;//param_get8(Cmd, 0); + size_t idx=0; + uint32_t hi2=0, hi=0, lo=0; + + //get binary from fsk wave + size_t size = fskdemod(rfLen,invert); + + // final loop, go over previously decoded fsk data and now manchester decode into usable tag ID + // 111000 bit pattern represent start of frame, 01 pattern represents a 1 and 10 represents a 0 + int frame_marker_mask[] = {1,1,1,0,0,0}; + int numshifts = 0; + idx = 0; + while( idx + 6 < size) { + // search for a start of frame marker + + if ( memcmp(GraphBuffer+idx, frame_marker_mask, sizeof(frame_marker_mask)) == 0) + { // frame marker found + idx+=6;//sizeof(frame_marker_mask); //size of int is >6 + while(GraphBuffer[idx] != GraphBuffer[idx+1] && idx < size-2) + { + // Keep going until next frame marker (or error) + // Shift in a bit. Start by shifting high registers + hi2 = (hi2<<1)|(hi>>31); + hi = (hi<<1)|(lo>>31); + //Then, shift in a 0 or one into low + if (GraphBuffer[idx] && !GraphBuffer[idx+1]) // 1 0 + lo=(lo<<1)|0; + else // 0 1 + lo=(lo<<1)|1; + numshifts++; + idx += 2; + } + + //PrintAndLog("Num shifts: %d ", numshifts); + // Hopefully, we read a tag and hit upon the next frame marker + if(idx + 6 < size) + { + if ( memcmp(GraphBuffer+(idx), frame_marker_mask, sizeof(frame_marker_mask)) == 0) + { + if (hi2 != 0){ //extra large HID tags + PrintAndLog("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 & 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++; + } + 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); + } + } + + PrintAndLog("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); + ClearGraph(1); + return 0; + } + } + } + // reset + hi2 = hi = lo = 0; + numshifts = 0; + }else + { + idx++; + } + } + if (idx + sizeof(frame_marker_mask) >= size){ + PrintAndLog("start bits for hid not found"); + PrintAndLog("FSK decoded bitstream:"); + // Now output the bitstream to the scrollback by line of 16 bits + if(size > (7*32)+2) size = (7*32)+2; //only output a max of 7 blocks of 32 bits most tags will have full bit stream inside that sample size + printBitStream(GraphBuffer,size); + /* + for (int i = 2; i < (size-16); i+=16) { + PrintAndLog("%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i", + GraphBuffer[i], + GraphBuffer[i+1], + GraphBuffer[i+2], + GraphBuffer[i+3], + GraphBuffer[i+4], + GraphBuffer[i+5], + GraphBuffer[i+6], + GraphBuffer[i+7], + GraphBuffer[i+8], + GraphBuffer[i+9], + GraphBuffer[i+10], + GraphBuffer[i+11], + GraphBuffer[i+12], + GraphBuffer[i+13], + GraphBuffer[i+14], + GraphBuffer[i+15]); + } + */ + } + ClearGraph(1); + return 0; +} + + +int CmdFSKdemodIO(const char *Cmd) +{ + //raw fsk demod no manchester decoding no start bit finding just get binary from wave + //set defaults + uint8_t rfLen = 64; + uint8_t invert=1; + size_t idx=0; + uint8_t testMax=0; + //test samples are not just noise + if (GraphTraceLen < 64) return 0; + for(idx=0;idx<64;idx++){ + if (testMax40){ + //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 + int mask[] = {0,0,0,0,0,0,0,0,0,1}; + for( idx=0; idx < (size - 74); idx++) { + if ( memcmp(GraphBuffer + idx, mask, sizeof(mask))==0) { + //frame marker found + if (GraphBuffer[idx+17]==1 && GraphBuffer[idx+26]==1 && GraphBuffer[idx+35]==1 && GraphBuffer[idx+44]==1 && GraphBuffer[idx+53]==1){ + //confirmed proper separator bits found + + PrintAndLog("%d%d%d%d%d%d%d%d %d",GraphBuffer[idx], GraphBuffer[idx+1], GraphBuffer[idx+2], GraphBuffer[idx+3], GraphBuffer[idx+4], GraphBuffer[idx+5], GraphBuffer[idx+6], GraphBuffer[idx+7], GraphBuffer[idx+8]); + PrintAndLog("%d%d%d%d%d%d%d%d %d",GraphBuffer[idx+9], GraphBuffer[idx+10], GraphBuffer[idx+11],GraphBuffer[idx+12],GraphBuffer[idx+13],GraphBuffer[idx+14],GraphBuffer[idx+15],GraphBuffer[idx+16],GraphBuffer[idx+17]); + PrintAndLog("%d%d%d%d%d%d%d%d %d",GraphBuffer[idx+18], GraphBuffer[idx+19], GraphBuffer[idx+20],GraphBuffer[idx+21],GraphBuffer[idx+22],GraphBuffer[idx+23],GraphBuffer[idx+24],GraphBuffer[idx+25],GraphBuffer[idx+26]); + PrintAndLog("%d%d%d%d%d%d%d%d %d",GraphBuffer[idx+27], GraphBuffer[idx+28], GraphBuffer[idx+29],GraphBuffer[idx+30],GraphBuffer[idx+31],GraphBuffer[idx+32],GraphBuffer[idx+33],GraphBuffer[idx+34],GraphBuffer[idx+35]); + PrintAndLog("%d%d%d%d%d%d%d%d %d",GraphBuffer[idx+36], GraphBuffer[idx+37], GraphBuffer[idx+38],GraphBuffer[idx+39],GraphBuffer[idx+40],GraphBuffer[idx+41],GraphBuffer[idx+42],GraphBuffer[idx+43],GraphBuffer[idx+44]); + PrintAndLog("%d%d%d%d%d%d%d%d %d",GraphBuffer[idx+45], GraphBuffer[idx+46], GraphBuffer[idx+47],GraphBuffer[idx+48],GraphBuffer[idx+49],GraphBuffer[idx+50],GraphBuffer[idx+51],GraphBuffer[idx+52],GraphBuffer[idx+53]); + PrintAndLog("%d%d%d%d%d%d%d%d %d%d",GraphBuffer[idx+54],GraphBuffer[idx+55],GraphBuffer[idx+56],GraphBuffer[idx+57],GraphBuffer[idx+58],GraphBuffer[idx+59],GraphBuffer[idx+60],GraphBuffer[idx+61],GraphBuffer[idx+62],GraphBuffer[idx+63]); + + uint32_t code = bytebits_to_byte(GraphBuffer+idx,32); + uint32_t code2 = bytebits_to_byte(GraphBuffer+idx+32,32); + short version = bytebits_to_byte(GraphBuffer+idx+27,8); //14,4 + uint8_t facilitycode = bytebits_to_byte(GraphBuffer+idx+19,8) ; + uint16_t number = (bytebits_to_byte(GraphBuffer+idx+36,8)<<8)|(bytebits_to_byte(GraphBuffer+idx+45,8)); //36,9 + + PrintAndLog("XSF(%02d)%02x:%d (%08x%08x)",version,facilitycode,number,code,code2); + ClearGraph(1); + return 0; + } else { + PrintAndLog("thought we had a valid tag but did not match format"); + } + } + } + if (idx >= (size-74)){ + PrintAndLog("start bits for io prox not found"); + PrintAndLog("FSK decoded bitstream:"); + // Now output the bitstream to the scrollback by line of 16 bits + if(size > (7*32)+2) size = (7*32)+2; //only output a max of 7 blocks of 32 bits most tags will have full bit stream inside that sample size + printBitStream(GraphBuffer,size); + /* + for (int i = 2; i < (size-16); i+=16) { + PrintAndLog("%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i", + GraphBuffer[i], + GraphBuffer[i+1], + GraphBuffer[i+2], + GraphBuffer[i+3], + GraphBuffer[i+4], + GraphBuffer[i+5], + GraphBuffer[i+6], + GraphBuffer[i+7], + GraphBuffer[i+8], + GraphBuffer[i+9], + GraphBuffer[i+10], + GraphBuffer[i+11], + GraphBuffer[i+12], + GraphBuffer[i+13], + GraphBuffer[i+14], + GraphBuffer[i+15]); + } + */ + } + } + ClearGraph(1); + return 0; +} +int CmdFSKdemod(const char *Cmd) //old CmdFSKdemod needs updating { static const int LowTone[] = { 1, 1, 1, 1, 1, -1, -1, -1, -1, -1, @@ -283,12 +847,12 @@ int CmdFSKdemod(const char *Cmd) int lowLen = sizeof (LowTone) / sizeof (int); int highLen = sizeof (HighTone) / sizeof (int); - int convLen = (highLen > lowLen) ? highLen : lowLen; + 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; @@ -320,7 +884,7 @@ int CmdFSKdemod(const char *Cmd) GraphTraceLen -= (convLen + 16); RepaintGraphWindow(); - // Find bit-sync (3 lo followed by 3 high) + // 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; @@ -393,46 +957,43 @@ int CmdGrid(const char *Cmd) int CmdHexsamples(const char *Cmd) { - int n; + int i, j; int requested = 0; int offset = 0; - sscanf(Cmd, "%i %i", &requested, &offset); - - int delivered = 0; + char string_buf[25]; + char* string_ptr = string_buf; uint8_t got[40000]; + + sscanf(Cmd, "%i %i", &requested, &offset); - /* round up to nearest 8 bytes so the printed data is all valid */ - if (requested < 8) { + /* if no args send something */ + if (requested == 0) { requested = 8; } - if (requested % 8 != 0) { - int remainder = requested % 8; - requested = requested + 8 - remainder; - } if (offset + requested > sizeof(got)) { PrintAndLog("Tried to read past end of buffer, + > 40000"); - return 0; - } else { - n = requested; - } + return 0; + } - GetFromBigBuf(got,n,offset); + GetFromBigBuf(got,requested,offset); WaitForResponse(CMD_ACK,NULL); - for (int j = 0; j < n; j += 8) { - PrintAndLog("%02x %02x %02x %02x %02x %02x %02x %02x", - sample_buf[j+0], - sample_buf[j+1], - sample_buf[j+2], - sample_buf[j+3], - sample_buf[j+4], - sample_buf[j+5], - sample_buf[j+6], - sample_buf[j+7] - ); - delivered += 8; - if (delivered >= requested) - break; + i = 0; + for (j = 0; j < requested; j++) { + i++; + string_ptr += sprintf(string_ptr, "%02x ", got[j]); + if (i == 8) { + *(string_ptr - 1) = '\0'; // remove the trailing space + PrintAndLog("%s", string_buf); + string_buf[0] = '\0'; + string_ptr = string_buf; + i = 0; + } + if (j == requested - 1 && string_buf[0] != '\0') { // print any remaining bytes + *(string_ptr - 1) = '\0'; + PrintAndLog("%s", string_buf); + string_buf[0] = '\0'; + } } return 0; } @@ -465,7 +1026,7 @@ int CmdSamples(const char *Cmd) uint8_t got[40000]; n = strtol(Cmd, NULL, 0); - if (n == 0) n = 512; + if (n == 0) n = 6000; if (n > sizeof(got)) n = sizeof(got); PrintAndLog("Reading %d samples\n", n); @@ -481,6 +1042,26 @@ int CmdSamples(const char *Cmd) return 0; } +int CmdTuneSamples(const char *Cmd) +{ + int cnt = 0; + int n = 255; + uint8_t got[255]; + + PrintAndLog("Reading %d samples\n", n); + GetFromBigBuf(got,n,7256); // armsrc/apps.h: #define FREE_BUFFER_OFFSET 7256 + WaitForResponse(CMD_ACK,NULL); + for (int j = 0; j < n; j++) { + GraphBuffer[cnt++] = ((int)got[j]) - 128; + } + + PrintAndLog("Done! Divisor 89 is 134khz, 95 is 125khz.\n"); + PrintAndLog("\n"); + GraphTraceLen = n; + RepaintGraphWindow(); + return 0; +} + int CmdLoad(const char *Cmd) { FILE *f = fopen(Cmd, "r"); @@ -558,7 +1139,7 @@ int CmdManchesterDemod(const char *Cmd) /* But it does not work if compiling on WIndows: therefore we just allocate a */ /* large array */ - uint8_t BitStream[MAX_GRAPH_TRACE_LEN]; + uint8_t BitStream[MAX_GRAPH_TRACE_LEN] = {0}; /* Detect high and lows */ for (i = 0; i < GraphTraceLen; i++) @@ -639,30 +1220,30 @@ int CmdManchesterDemod(const char *Cmd) { if (GraphBuffer[i-1] != GraphBuffer[i]) { - lc = i-lastval; - lastval = i; - - // Error check: if bitidx becomes too large, we do not - // have a Manchester encoded bitstream or the clock is really - // wrong! - if (bitidx > (GraphTraceLen*2/clock+8) ) { - PrintAndLog("Error: the clock you gave is probably wrong, aborting."); - return 0; - } - // Then switch depending on lc length: - // Tolerance is 1/4 of clock rate (arbitrary) - if (abs(lc-clock/2) < tolerance) { - // Short pulse : either "1" or "0" - BitStream[bitidx++]=GraphBuffer[i-1]; - } else if (abs(lc-clock) < tolerance) { - // Long pulse: either "11" or "00" - BitStream[bitidx++]=GraphBuffer[i-1]; - BitStream[bitidx++]=GraphBuffer[i-1]; - } else { + lc = i-lastval; + lastval = i; + + // Error check: if bitidx becomes too large, we do not + // have a Manchester encoded bitstream or the clock is really + // wrong! + if (bitidx > (GraphTraceLen*2/clock+8) ) { + PrintAndLog("Error: the clock you gave is probably wrong, aborting."); + return 0; + } + // Then switch depending on lc length: + // Tolerance is 1/4 of clock rate (arbitrary) + if (abs(lc-clock/2) < tolerance) { + // Short pulse : either "1" or "0" + BitStream[bitidx++]=GraphBuffer[i-1]; + } else if (abs(lc-clock) < tolerance) { + // Long pulse: either "11" or "00" + BitStream[bitidx++]=GraphBuffer[i-1]; + BitStream[bitidx++]=GraphBuffer[i-1]; + } else { // Error warnings++; - PrintAndLog("Warning: Manchester decode error for pulse width detection."); - PrintAndLog("(too many of those messages mean either the stream is not Manchester encoded, or clock is wrong)"); + PrintAndLog("Warning: Manchester decode error for pulse width detection."); + PrintAndLog("(too many of those messages mean either the stream is not Manchester encoded, or clock is wrong)"); if (warnings > 10) { @@ -679,15 +1260,15 @@ int CmdManchesterDemod(const char *Cmd) for (i = 0; i < bitidx; i += 2) { if ((BitStream[i] == 0) && (BitStream[i+1] == 1)) { BitStream[bit2idx++] = 1 ^ invert; - } else if ((BitStream[i] == 1) && (BitStream[i+1] == 0)) { - BitStream[bit2idx++] = 0 ^ invert; - } else { - // We cannot end up in this state, this means we are unsynchronized, - // move up 1 bit: - i++; + } else if ((BitStream[i] == 1) && (BitStream[i+1] == 0)) { + BitStream[bit2idx++] = 0 ^ invert; + } else { + // We cannot end up in this state, this means we are unsynchronized, + // move up 1 bit: + i++; warnings++; - PrintAndLog("Unsynchronized, resync..."); - PrintAndLog("(too many of those messages mean the stream is not Manchester encoded)"); + PrintAndLog("Unsynchronized, resync..."); + PrintAndLog("(too many of those messages mean the stream is not Manchester encoded)"); if (warnings > 10) { @@ -815,8 +1396,43 @@ int CmdThreshold(const char *Cmd) if (GraphBuffer[i] >= threshold) GraphBuffer[i] = 1; else - GraphBuffer[i] =- 1; + GraphBuffer[i] = -1; + } + RepaintGraphWindow(); + return 0; +} + +int CmdDirectionalThreshold(const char *Cmd) +{ + int8_t upThres = param_get8(Cmd, 0); + int8_t downThres = param_get8(Cmd, 1); + + printf("Applying Up Threshold: %d, Down Threshold: %d\n", upThres, downThres); + + int lastValue = GraphBuffer[0]; + GraphBuffer[0] = 0; // Will be changed at the end, but init 0 as we adjust to last samples value if no threshold kicks in. + + for (int i = 1; i < GraphTraceLen; ++i) { + // Apply first threshold to samples heading up + if (GraphBuffer[i] >= upThres && GraphBuffer[i] > lastValue) + { + lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it. + GraphBuffer[i] = 1; + } + // Apply second threshold to samples heading down + else if (GraphBuffer[i] <= downThres && GraphBuffer[i] < lastValue) + { + lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it. + GraphBuffer[i] = -1; + } + else + { + lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it. + GraphBuffer[i] = GraphBuffer[i-1]; + + } } + GraphBuffer[0] = GraphBuffer[1]; // Aline with first edited sample. RepaintGraphWindow(); return 0; } @@ -854,7 +1470,8 @@ static command_t CommandTable[] = { {"help", CmdHelp, 1, "This help"}, {"amp", CmdAmp, 1, "Amplify peaks"}, - {"askdemod", Cmdaskdemod, 1, "<0|1> -- Attempt to demodulate simple ASK tags"}, + {"askdemod", Cmdaskdemod, 1, "<0 or 1> -- Attempt to demodulate simple ASK tags"}, + {"askrawdemod", Cmdaskrawdemod, 1, "[clock] [invert<0 or 1>] -- Attempt to demodulate simple ASK tags and output binary (args optional-defaults='64 0'"}, {"autocorr", CmdAutoCorr, 1, " -- Autocorrelation over window"}, {"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"}, {"bitstream", CmdBitstream, 1, "[clock rate] -- Convert waveform into a bitstream"}, @@ -862,6 +1479,9 @@ static command_t CommandTable[] = {"dec", CmdDec, 1, "Decimate samples"}, {"detectclock", CmdDetectClockRate, 1, "Detect clock rate"}, {"fskdemod", CmdFSKdemod, 1, "Demodulate graph window as a HID FSK"}, + {"fskhiddemod", CmdFSKdemodHID, 1, "Demodulate graph window as a HID FSK using raw"}, + {"fskiodemod", CmdFSKdemodIO, 1, "Demodulate graph window as an IO Prox FSK using raw"}, + {"fskrawdemod", CmdFSKrawdemod, 1, "[clock rate] [invert] Demodulate graph window from FSK to binary (clock = 64 or 50)(invert = 1 or 0)"}, {"grid", CmdGrid, 1, " -- overlay grid on graph window, use zero value to turn off either"}, {"hexsamples", CmdHexsamples, 0, " [] -- Dump big buffer as hex bytes"}, {"hide", CmdHide, 1, "Hide graph window"}, @@ -873,10 +1493,12 @@ static command_t CommandTable[] = {"norm", CmdNorm, 1, "Normalize max/min to +/-500"}, {"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"}, {"samples", CmdSamples, 0, "[512 - 40000] -- Get raw samples for graph window"}, + {"tune", CmdTuneSamples, 0, "Get hw tune samples for graph window"}, {"save", CmdSave, 1, " -- Save trace (from graph window)"}, {"scale", CmdScale, 1, " -- Set cursor display scale"}, {"threshold", CmdThreshold, 1, " -- Maximize/minimize every value in the graph window depending on threshold"}, {"zerocrossings", CmdZerocrossings, 1, "Count time between zero-crossings"}, + {"dirthreshold", CmdDirectionalThreshold, 1, " -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."}, {NULL, NULL, 0, NULL} };