X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/c4809fd411a00e9d0ce2b7ad62dc9a19a9c7a89d..cbecb8a20943239fe217ec329f05e8460bfc49e9:/client/cmddata.c diff --git a/client/cmddata.c b/client/cmddata.c index e291c924..f5416fee 100644 --- a/client/cmddata.c +++ b/client/cmddata.c @@ -8,15 +8,15 @@ // Data and Graph commands //----------------------------------------------------------------------------- +#include "cmddata.h" + #include // also included in util.h #include // also included in util.h #include #include // for CmdNorm INT_MIN && INT_MAX -#include "data.h" // also included in util.h -#include "cmddata.h" #include "util.h" #include "cmdmain.h" -#include "proxmark3.h" +#include "comms.h" #include "ui.h" // for show graph controls #include "graph.h" // for graph data #include "cmdparser.h"// already included in cmdmain.h @@ -37,7 +37,7 @@ static int CmdHelp(const char *Cmd); //by marshmellow void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx) { - if (buff == NULL) + if (buff == NULL) return; if ( size > MAX_DEMOD_BUF_LEN - startIdx) @@ -68,15 +68,21 @@ void save_restoreDB(uint8_t saveOpt) static uint8_t SavedDB[MAX_DEMOD_BUF_LEN]; static size_t SavedDBlen; static bool DB_Saved = false; + static int savedDemodStartIdx = 0; + static int savedDemodClock = 0; - if (saveOpt==1) { //save + if (saveOpt == GRAPH_SAVE) { //save memcpy(SavedDB, DemodBuffer, sizeof(DemodBuffer)); SavedDBlen = DemodBufferLen; DB_Saved=true; + savedDemodStartIdx = g_DemodStartIdx; + savedDemodClock = g_DemodClock; } else if (DB_Saved) { //restore memcpy(DemodBuffer, SavedDB, sizeof(DemodBuffer)); DemodBufferLen = SavedDBlen; + g_DemodClock = savedDemodClock; + g_DemodStartIdx = savedDemodStartIdx; } return; } @@ -96,7 +102,7 @@ int usage_data_printdemodbuf(){ PrintAndLog(" x output in hex (omit for binary output)"); PrintAndLog(" o enter offset in # of bits"); PrintAndLog(" l enter length to print in # of bits or hex characters respectively"); - return 0; + return 0; } //by marshmellow @@ -156,7 +162,7 @@ int CmdPrintDemodBuff(const char *Cmd) } //Validations if(errors) return usage_data_printdemodbuf(); - length = (length > (DemodBufferLen-offset)) ? DemodBufferLen-offset : length; + length = (length > (DemodBufferLen-offset)) ? DemodBufferLen-offset : length; int numBits = (length) & 0x00FFC; //make sure we don't exceed our string if (hexMode){ @@ -164,7 +170,7 @@ int CmdPrintDemodBuff(const char *Cmd) numBits = (numBits > sizeof(hex)) ? sizeof(hex) : numBits; numBits = binarraytohex(hex, buf, numBits); if (numBits==0) return 0; - PrintAndLog("DemodBuffer: %s",hex); + PrintAndLog("DemodBuffer: %s",hex); } else { PrintAndLog("DemodBuffer:\n%s", sprint_bin_break(DemodBuffer+offset,numBits,16)); } @@ -193,7 +199,7 @@ int CmdGetBitStream(const char *Cmd) // (amp may not be needed anymore) //verbose will print results and demoding messages //emSearch will auto search for EM410x format in bitstream -//askType switches decode: ask/raw = 0, ask/manchester = 1 +//askType switches decode: ask/raw = 0, ask/manchester = 1 int ASKDemod_ext(const char *Cmd, bool verbose, bool emSearch, uint8_t askType, bool *stCheck) { int invert=0; int clk=0; @@ -219,7 +225,7 @@ int ASKDemod_ext(const char *Cmd, bool verbose, bool emSearch, uint8_t askType, int foundclk = 0; //amp before ST check if (amp == 'a' || amp == 'A') { - askAmp(BitStream, BitLen); + askAmp(BitStream, BitLen); } bool st = false; size_t ststart = 0, stend = 0; @@ -257,7 +263,7 @@ int ASKDemod_ext(const char *Cmd, bool verbose, bool emSearch, uint8_t askType, else PrintAndLog("ASK/Raw - Clock: %d - Decoded bitstream:",clk); // Now output the bitstream to the scrollback by line of 16 bits printDemodBuff(); - + } uint64_t lo = 0; uint32_t hi = 0; @@ -295,7 +301,7 @@ int Cmdaskmandemod(const char *Cmd) return 0; } bool st = true; - if (Cmd[0]=='s') + if (Cmd[0]=='s') return ASKDemod_ext(Cmd++, true, false, 1, &st); else if (Cmd[1] == 's') return ASKDemod_ext(Cmd+=2, true, false, 1, &st); @@ -318,8 +324,8 @@ int Cmdmandecoderaw(const char *Cmd) PrintAndLog("Usage: data manrawdecode [invert] [maxErr]"); PrintAndLog(" Takes 10 and 01 and converts to 0 and 1 respectively"); PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)"); - PrintAndLog(" [invert] invert output"); - PrintAndLog(" [maxErr] set number of errors allowed (default = 20)"); + PrintAndLog(" [invert] invert output"); + PrintAndLog(" [maxErr] set number of errors allowed (default = 20)"); PrintAndLog(""); PrintAndLog(" sample: data manrawdecode = decode manchester bitstream from the demodbuffer"); return 0; @@ -361,18 +367,20 @@ int Cmdmandecoderaw(const char *Cmd) return 1; } -//by marshmellow -//biphase decode -//take 01 or 10 = 0 and 11 or 00 = 1 -//takes 2 arguments "offset" default = 0 if 1 it will shift the decode by one bit -// and "invert" default = 0 if 1 it will invert output -// the argument offset allows us to manually shift if the output is incorrect - [EDIT: now auto detects] +/** + * @author marshmellow + * biphase decode + * decdoes 01 or 10 to 0 and 11 or 00 to 1 + * param offset adjust start position + * param invert invert output + * param maxErr maximum tolerated errors + */ int CmdBiphaseDecodeRaw(const char *Cmd) { size_t size=0; int offset=0, invert=0, maxErr=20, errCnt=0; char cmdp = param_getchar(Cmd, 0); - if (strlen(Cmd) > 3 || cmdp == 'h' || cmdp == 'H') { + if (strlen(Cmd) > 7 || cmdp == 'h' || cmdp == 'H') { PrintAndLog("Usage: data biphaserawdecode [offset] [invert] [maxErr]"); PrintAndLog(" Converts 10 or 01 to 1 and 11 or 00 to 0"); PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)"); @@ -410,7 +418,7 @@ int CmdBiphaseDecodeRaw(const char *Cmd) PrintAndLog("Biphase Decoded using offset: %d - # invert:%d - data:",offset,invert); PrintAndLog("%s", sprint_bin_break(BitStream, size, 16)); - + if (offset) setDemodBuf(DemodBuffer,DemodBufferLen-offset, offset); //remove first bit from raw demod setClockGrid(g_DemodClock, g_DemodStartIdx + g_DemodClock*offset/2); return 1; @@ -421,17 +429,17 @@ int CmdBiphaseDecodeRaw(const char *Cmd) int ASKbiphaseDemod(const char *Cmd, bool verbose) { //ask raw demod GraphBuffer first - int offset=0, clk=0, invert=0, maxErr=0; + int offset=0, clk=0, invert=0, maxErr=100; sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr); - uint8_t BitStream[MAX_GRAPH_TRACE_LEN]; + uint8_t BitStream[MAX_GRAPH_TRACE_LEN]; size_t size = getFromGraphBuf(BitStream); int startIdx = 0; //invert here inverts the ask raw demoded bits which has no effect on the demod, but we need the pointer - int errCnt = askdemod_ext(BitStream, &size, &clk, &invert, maxErr, 0, 0, &startIdx); - if ( errCnt < 0 || errCnt > maxErr ) { - if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk); - return 0; + int errCnt = askdemod_ext(BitStream, &size, &clk, &invert, maxErr, 0, 0, &startIdx); + if ( errCnt < 0 || errCnt > maxErr ) { + if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk); + return 0; } //attempt to Biphase decode BitStream @@ -545,7 +553,7 @@ int AutoCorrelate(const int *in, int *out, size_t len, int window, bool SaveGrph if (SaveGrph) { //GraphTraceLen = GraphTraceLen - window; memcpy(out, CorrelBuffer, len * sizeof(int)); - RepaintGraphWindow(); + RepaintGraphWindow(); } return Correlation; } @@ -564,7 +572,7 @@ int usage_data_autocorr(void) int CmdAutoCorr(const char *Cmd) { char cmdp = param_getchar(Cmd, 0); - if (cmdp == 'h' || cmdp == 'H') + if (cmdp == 'h' || cmdp == 'H') return usage_data_autocorr(); int window = 4000; //set default char grph=0; @@ -585,8 +593,7 @@ int CmdBitsamples(const char *Cmd) int cnt = 0; uint8_t got[12288]; - GetFromBigBuf(got,sizeof(got),0); - WaitForResponse(CMD_ACK,NULL); + GetFromBigBuf(got, sizeof(got), 0 , NULL, -1, false); for (int j = 0; j < sizeof(got); j++) { for (int k = 0; k < 8; k++) { @@ -670,9 +677,9 @@ int CmdGraphShiftZero(const char *Cmd) int shiftedVal=0; for(int i = 0; i127) + if (shiftedVal>127) shiftedVal=127; - else if (shiftedVal<-127) + else if (shiftedVal<-127) shiftedVal=-127; GraphBuffer[i]= shiftedVal; } @@ -694,13 +701,13 @@ int AskEdgeDetect(const int *in, int *out, int len, int threshold) { //by marshmellow //use large jumps in read samples to identify edges of waves and then amplify that wave to max -//similar to dirtheshold, threshold commands +//similar to dirtheshold, threshold commands //takes a threshold length which is the measured length between two samples then determines an edge int CmdAskEdgeDetect(const char *Cmd) { int thresLen = 25; int ans = 0; - sscanf(Cmd, "%i", &thresLen); + sscanf(Cmd, "%i", &thresLen); ans = AskEdgeDetect(GraphBuffer, GraphBuffer, GraphTraceLen, thresLen); RepaintGraphWindow(); @@ -803,12 +810,12 @@ int FSKrawDemod(const char *Cmd, bool verbose) if (!rfLen) rfLen = 50; } int startIdx = 0; - int size = fskdemod_ext(BitStream, BitLen, rfLen, invert, fchigh, fclow, &startIdx); + int size = fskdemod(BitStream, BitLen, rfLen, invert, fchigh, fclow, &startIdx); if (size > 0) { setDemodBuf(BitStream,size,0); setClockGrid(rfLen, startIdx); - // Now output the bitstream to the scrollback by line of 16 bits + // Now output the bitstream to the scrollback by line of 16 bits if (verbose || g_debugMode) { PrintAndLog("\nUsing Clock:%u, invert:%u, fchigh:%u, fclow:%u", (unsigned int)rfLen, (unsigned int)invert, (unsigned int)fchigh, (unsigned int)fclow); PrintAndLog("%s decoded bitstream:",GetFSKType(fchigh,fclow,invert)); @@ -838,7 +845,7 @@ int CmdFSKrawdemod(const char *Cmd) 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 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"); @@ -873,7 +880,7 @@ int PSKDemod(const char *Cmd, bool verbose) if (errCnt > maxErr){ if (g_debugMode || verbose) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt); return 0; - } + } if (errCnt<0|| BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first) if (g_debugMode || verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt); return 0; @@ -918,7 +925,7 @@ int NRZrawDemod(const char *Cmd, bool verbose) if (errCnt > maxErr){ if (g_debugMode) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt); return 0; - } + } if (errCnt<0 || BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first) if (g_debugMode) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt); return 0; @@ -935,7 +942,7 @@ int NRZrawDemod(const char *Cmd, bool verbose) // Now output the bitstream to the scrollback by line of 16 bits printDemodBuff(); } - return 1; + return 1; } int CmdNRZrawDemod(const char *Cmd) @@ -981,10 +988,10 @@ int CmdPSK1rawDemod(const char *Cmd) ans = PSKDemod(Cmd, true); //output if (!ans){ - if (g_debugMode) PrintAndLog("Error demoding: %d",ans); + if (g_debugMode) PrintAndLog("Error demoding: %d",ans); return 0; } - + PrintAndLog("PSK1 demoded bitstream:"); // Now output the bitstream to the scrollback by line of 16 bits printDemodBuff(); @@ -1012,13 +1019,13 @@ int CmdPSK2rawDemod(const char *Cmd) } ans=PSKDemod(Cmd, true); if (!ans){ - if (g_debugMode) PrintAndLog("Error demoding: %d",ans); + if (g_debugMode) PrintAndLog("Error demoding: %d",ans); return 0; - } + } psk1TOpsk2(DemodBuffer, DemodBufferLen); PrintAndLog("PSK2 demoded bitstream:"); // Now output the bitstream to the scrollback by line of 16 bits - printDemodBuff(); + printDemodBuff(); return 1; } @@ -1029,10 +1036,10 @@ int CmdRawDemod(const char *Cmd) if (strlen(Cmd) > 35 || cmdp == 'h' || cmdp == 'H' || strlen(Cmd)<2) { PrintAndLog("Usage: data rawdemod [modulation] |"); - PrintAndLog(" [modulation] as 2 char, 'ab' for ask/biphase, 'am' for ask/manchester, 'ar' for ask/raw, 'fs' for fsk, ..."); + PrintAndLog(" [modulation] as 2 char, 'ab' for ask/biphase, 'am' for ask/manchester, 'ar' for ask/raw, 'fs' for fsk, ..."); PrintAndLog(" 'nr' for nrz/direct, 'p1' for psk1, 'p2' for psk2"); - PrintAndLog(" as 'h', prints the help for the specific modulation"); - PrintAndLog(" see specific modulation help for optional parameters"); + PrintAndLog(" as 'h', prints the help for the specific modulation"); + PrintAndLog(" see specific modulation help for optional parameters"); PrintAndLog(""); PrintAndLog(" sample: data rawdemod fs h = print help specific to fsk demod"); PrintAndLog(" : data rawdemod fs = demod GraphBuffer using: fsk - autodetect"); @@ -1060,7 +1067,7 @@ int CmdRawDemod(const char *Cmd) ans = CmdPSK1rawDemod(Cmd+2); } else if(cmdp == 'p' && cmdp2 == '2'){ ans = CmdPSK2rawDemod(Cmd+2); - } else { + } else { PrintAndLog("unknown modulation entered - see help ('h') for parameter structure"); } return ans; @@ -1071,7 +1078,7 @@ void setClockGrid(int clk, int offset) { g_DemodClock = clk; if (g_debugMode) PrintAndLog("demodoffset %d, clk %d",offset,clk); - if (offset > clk) offset %= clk; + if (offset > clk) offset %= clk; if (offset < 0) offset += clk; if (offset > GraphTraceLen || offset < 0) return; @@ -1125,8 +1132,7 @@ int CmdHexsamples(const char *Cmd) return 0; } - GetFromBigBuf(got,requested,offset); - WaitForResponse(CMD_ACK,NULL); + GetFromBigBuf(got, requested, offset, NULL, -1, false); i = 0; for (j = 0; j < requested; j++) { @@ -1194,20 +1200,22 @@ int getSamples(int n, bool silent) n = sizeof(got); if (!silent) PrintAndLog("Reading %d bytes from device memory\n", n); - GetFromBigBuf(got,n,0); - if (!silent) PrintAndLog("Data fetched"); UsbCommand response; - WaitForResponse(CMD_ACK, &response); + GetFromBigBuf(got, n, 0, &response, -1, false); + if (!silent) PrintAndLog("Data fetched"); uint8_t bits_per_sample = 8; //Old devices without this feature would send 0 at arg[0] - if(response.arg[0] > 0) - { + if(response.arg[0] > 0) { + #pragma GCC diagnostic push + #pragma GCC diagnostic ignored "-Waddress-of-packed-member" sample_config *sc = (sample_config *) response.d.asBytes; + #pragma GCC diagnostic pop if (!silent) PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc->bits_per_sample , sc->decimation); bits_per_sample = sc->bits_per_sample; } + if(bits_per_sample < 8) { if (!silent) PrintAndLog("Unpacking..."); @@ -1228,6 +1236,7 @@ int getSamples(int n, bool silent) } setClockGrid(0,0); + DemodBufferLen = 0; RepaintGraphWindow(); return 0; } @@ -1274,26 +1283,36 @@ int CmdTuneSamples(const char *Cmd) peakf = resp.arg[2] & 0xffff; peakv = resp.arg[2] >> 16; PrintAndLog(""); - PrintAndLog("# LF antenna: %5.2f V @ 125.00 kHz", vLf125/1000.0); - PrintAndLog("# LF antenna: %5.2f V @ 134.00 kHz", vLf134/1000.0); - PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/1000.0, 12000.0/(peakf+1)); - PrintAndLog("# HF antenna: %5.2f V @ 13.56 MHz", vHf/1000.0); - - #define LF_UNUSABLE_V 2948 // was 2000. Changed due to bugfix in voltage measurements. LF results are now 47% higher. - #define LF_MARGINAL_V 14739 // was 10000. Changed due to bugfix bug in voltage measurements. LF results are now 47% higher. - #define HF_UNUSABLE_V 3167 // was 2000. Changed due to bugfix in voltage measurements. HF results are now 58% higher. - #define HF_MARGINAL_V 7917 // was 5000. Changed due to bugfix in voltage measurements. HF results are now 58% higher. - - if (peakv < LF_UNUSABLE_V) - PrintAndLog("# Your LF antenna is unusable."); - else if (peakv < LF_MARGINAL_V) - PrintAndLog("# Your LF antenna is marginal."); - if (vHf < HF_UNUSABLE_V) - PrintAndLog("# Your HF antenna is unusable."); - else if (vHf < HF_MARGINAL_V) - PrintAndLog("# Your HF antenna is marginal."); - - if (peakv >= LF_UNUSABLE_V) { + if (arg & FLAG_TUNE_LF) + { + PrintAndLog("# LF antenna: %5.2f V @ 125.00 kHz", vLf125/500.0); + PrintAndLog("# LF antenna: %5.2f V @ 134.00 kHz", vLf134/500.0); + PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/500.0, 12000.0/(peakf+1)); + } + if (arg & FLAG_TUNE_HF) + PrintAndLog("# HF antenna: %5.2f V @ 13.56 MHz", vHf/1000.0); + + #define LF_UNUSABLE_V 3000 + #define LF_MARGINAL_V 15000 + #define HF_UNUSABLE_V 3200 + #define HF_MARGINAL_V 8000 + + if (arg & FLAG_TUNE_LF) + { + if (peakv<<1 < LF_UNUSABLE_V) + PrintAndLog("# Your LF antenna is unusable."); + else if (peakv<<1 < LF_MARGINAL_V) + PrintAndLog("# Your LF antenna is marginal."); + } + if (arg & FLAG_TUNE_HF) + { + if (vHf < HF_UNUSABLE_V) + PrintAndLog("# Your HF antenna is unusable."); + else if (vHf < HF_MARGINAL_V) + PrintAndLog("# Your HF antenna is marginal."); + } + + if (peakv<<1 >= LF_UNUSABLE_V) { for (int i = 0; i < 256; i++) { GraphBuffer[i] = resp.d.asBytes[i] - 128; } @@ -1316,7 +1335,7 @@ int CmdLoad(const char *Cmd) len = strlen(Cmd); if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE; memcpy(filename, Cmd, len); - + FILE *f = fopen(filename, "r"); if (!f) { PrintAndLog("couldn't open '%s'", filename); @@ -1332,6 +1351,7 @@ int CmdLoad(const char *Cmd) fclose(f); PrintAndLog("loaded %d samples", GraphTraceLen); setClockGrid(0,0); + DemodBufferLen = 0; RepaintGraphWindow(); return 0; } @@ -1389,8 +1409,7 @@ int CmdNorm(const char *Cmd) if (max != min) { for (i = 0; i < GraphTraceLen; ++i) { - GraphBuffer[i] = (GraphBuffer[i] - ((max + min) / 2)) * 256 / - (max - min); + GraphBuffer[i] = ((long)(GraphBuffer[i] - ((max + min) / 2)) * 256) / (max - min); //marshmelow: adjusted *1000 to *256 to make +/- 128 so demod commands still work } } @@ -1412,7 +1431,7 @@ int CmdSave(const char *Cmd) len = strlen(Cmd); if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE; memcpy(filename, Cmd, len); - + FILE *f = fopen(filename, "w"); if(!f) { @@ -1600,6 +1619,205 @@ int Cmdhex2bin(const char *Cmd) return 0; } + /* // example of FSK2 RF/50 Tones + 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, // note one extra 1 to padd due to 50/8 remainder (1/2 the remainder) + 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, // note one extra -1 to padd due to 50/8 remainder + }; + */ +void GetHiLoTone(int *LowTone, int *HighTone, int clk, int LowToneFC, int HighToneFC) { + int i,j=0; + int Left_Modifier = ((clk % LowToneFC) % 2) + ((clk % LowToneFC)/2); + int Right_Modifier = (clk % LowToneFC) / 2; + //int HighToneMod = clk mod HighToneFC; + int LeftHalfFCCnt = (LowToneFC % 2) + (LowToneFC/2); //truncate + int FCs_per_clk = clk/LowToneFC; + + // need to correctly split up the clock to field clocks. + // First attempt uses modifiers on each end to make up for when FCs don't evenly divide into Clk + + // start with LowTone + // set extra 1 modifiers to make up for when FC doesn't divide evenly into Clk + for (i = 0; i < Left_Modifier; i++) { + LowTone[i] = 1; + } + + // loop # of field clocks inside the main clock + for (i = 0; i < (FCs_per_clk); i++) { + // loop # of samples per field clock + for (j = 0; j < LowToneFC; j++) { + LowTone[(i*LowToneFC)+Left_Modifier+j] = ( j < LeftHalfFCCnt ) ? 1 : -1; + } + } + + int k; + // add last -1 modifiers + for (k = 0; k < Right_Modifier; k++) { + LowTone[((i-1)*LowToneFC)+Left_Modifier+j+k] = -1; + } + + // now do hightone + Left_Modifier = ((clk % HighToneFC) % 2) + ((clk % HighToneFC)/2); + Right_Modifier = (clk % HighToneFC) / 2; + LeftHalfFCCnt = (HighToneFC % 2) + (HighToneFC/2); //truncate + FCs_per_clk = clk/HighToneFC; + + for (i = 0; i < Left_Modifier; i++) { + HighTone[i] = 1; + } + + // loop # of field clocks inside the main clock + for (i = 0; i < (FCs_per_clk); i++) { + // loop # of samples per field clock + for (j = 0; j < HighToneFC; j++) { + HighTone[(i*HighToneFC)+Left_Modifier+j] = ( j < LeftHalfFCCnt ) ? 1 : -1; + } + } + + // add last -1 modifiers + for (k = 0; k < Right_Modifier; k++) { + PrintAndLog("(i-1)*HighToneFC+lm+j+k %i",((i-1)*HighToneFC)+Left_Modifier+j+k); + HighTone[((i-1)*HighToneFC)+Left_Modifier+j+k] = -1; + } + if (g_debugMode == 2) { + for ( i = 0; i < clk; i++) { + PrintAndLog("Low: %i, High: %i",LowTone[i],HighTone[i]); + } + } +} + +//old CmdFSKdemod adapted by marshmellow +//converts FSK to clear NRZ style wave. (or demodulates) +int FSKToNRZ(int *data, int *dataLen, int clk, int LowToneFC, int HighToneFC) { + uint8_t ans=0; + if (clk == 0 || LowToneFC == 0 || HighToneFC == 0) { + int firstClockEdge=0; + ans = fskClocks((uint8_t *) &LowToneFC, (uint8_t *) &HighToneFC, (uint8_t *) &clk, false, &firstClockEdge); + if (g_debugMode > 1) { + PrintAndLog ("DEBUG FSKtoNRZ: detected clocks: fc_low %i, fc_high %i, clk %i, firstClockEdge %i, ans %u", LowToneFC, HighToneFC, clk, firstClockEdge, ans); + } + } + // currently only know fsk modulations with field clocks < 10 samples and > 4 samples. filter out to remove false positives (and possibly destroying ask/psk modulated waves...) + if (ans == 0 || clk == 0 || LowToneFC == 0 || HighToneFC == 0 || LowToneFC > 10 || HighToneFC < 4) { + if (g_debugMode > 1) { + PrintAndLog ("DEBUG FSKtoNRZ: no fsk clocks found"); + } + return 0; + } + int LowTone[clk]; + int HighTone[clk]; + GetHiLoTone(LowTone, HighTone, clk, LowToneFC, HighToneFC); + + int i, j; + + // loop through ([all samples] - clk) + for (i = 0; i < *dataLen - clk; ++i) { + int lowSum = 0, highSum = 0; + + // sum all samples together starting from this sample for [clk] samples for each tone (multiply tone value with sample data) + for (j = 0; j < clk; ++j) { + lowSum += LowTone[j] * data[i+j]; + highSum += HighTone[j] * data[i + j]; + } + // get abs( [average sample value per clk] * 100 ) (or a rolling average of sorts) + lowSum = abs(100 * lowSum / clk); + highSum = abs(100 * highSum / clk); + // save these back to buffer for later use + data[i] = (highSum << 16) | lowSum; + } + + // now we have the abs( [average sample value per clk] * 100 ) for each tone + // loop through again [all samples] - clk - 16 + // note why 16??? is 16 the largest FC? changed to LowToneFC as that should be the > fc + for(i = 0; i < *dataLen - clk - LowToneFC; ++i) { + int lowTot = 0, highTot = 0; + + // sum a field clock width of abs( [average sample values per clk] * 100) for each tone + for (j = 0; j < LowToneFC; ++j) { //10 for fsk2 + lowTot += (data[i + j] & 0xffff); + } + for (j = 0; j < HighToneFC; j++) { //8 for fsk2 + highTot += (data[i + j] >> 16); + } + + // subtract the sum of lowTone averages by the sum of highTone averages as it + // and write back the new graph value + data[i] = lowTot - highTot; + } + // update dataLen to what we put back to the data sample buffer + *dataLen -= (clk + LowToneFC); + return 0; +} + +int usage_data_fsktonrz() { + PrintAndLog("Usage: data fsktonrz c l f "); + PrintAndLog("Options: "); + PrintAndLog(" h This help"); + PrintAndLog(" c enter the a clock (omit to autodetect)"); + PrintAndLog(" l enter a field clock (omit to autodetect)"); + PrintAndLog(" f enter a field clock (omit to autodetect)"); + return 0; +} + +int CmdFSKToNRZ(const char *Cmd) { + // take clk, fc_low, fc_high + // blank = auto; + bool errors = false; + int clk = 0; + char cmdp = 0; + int fc_low = 10, fc_high = 8; + while(param_getchar(Cmd, cmdp) != 0x00) + { + switch(param_getchar(Cmd, cmdp)) + { + case 'h': + case 'H': + return usage_data_fsktonrz(); + case 'C': + case 'c': + clk = param_get32ex(Cmd, cmdp+1, 0, 10); + cmdp += 2; + break; + case 'F': + case 'f': + fc_high = param_get32ex(Cmd, cmdp+1, 0, 10); + cmdp += 2; + break; + case 'L': + case 'l': + fc_low = param_get32ex(Cmd, cmdp+1, 0, 10); + cmdp += 2; + break; + default: + PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp)); + errors = true; + break; + } + if(errors) break; + } + //Validations + if(errors) return usage_data_fsktonrz(); + + setClockGrid(0,0); + DemodBufferLen = 0; + int ans = FSKToNRZ(GraphBuffer, &GraphTraceLen, clk, fc_low, fc_high); + CmdNorm(""); + RepaintGraphWindow(); + return ans; +} + + static command_t CommandTable[] = { {"help", CmdHelp, 1, "This help"}, @@ -1611,6 +1829,7 @@ static command_t CommandTable[] = {"buffclear", CmdBuffClear, 1, "Clear sample buffer and graph window"}, {"dec", CmdDec, 1, "Decimate samples"}, {"detectclock", CmdDetectClockRate, 1, "[modulation] Detect clock rate of wave in GraphBuffer (options: 'a','f','n','p' for ask, fsk, nrz, psk respectively)"}, + {"fsktonrz", CmdFSKToNRZ, 1, "Convert fsk2 to nrz wave for alternate fsk demodulating (for weak fsk)"}, {"getbitstream", CmdGetBitStream, 1, "Convert GraphBuffer's >=1 values to 1 and <1 to 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"}, @@ -1625,7 +1844,7 @@ static command_t CommandTable[] = {"norm", CmdNorm, 1, "Normalize max/min to +/-128"}, {"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"}, {"printdemodbuffer",CmdPrintDemodBuff, 1, "[x] [o] [l] -- print the data in the DemodBuffer - 'x' for hex output"}, - {"rawdemod", CmdRawDemod, 1, "[modulation] ... -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"}, + {"rawdemod", CmdRawDemod, 1, "[modulation] ... -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"}, {"samples", CmdSamples, 0, "[512 - 40000] -- Get raw samples for graph window (GraphBuffer)"}, {"save", CmdSave, 1, " -- Save trace (from graph window)"}, {"setgraphmarkers", CmdSetGraphMarkers, 1, "[orange_marker] [blue_marker] (in graph window)"},