X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/e0165dcf3a5fad10eb9f9595c245365e3c5e5c0d..refs/pull/910/head:/client/cmddata.c?ds=sidebyside diff --git a/client/cmddata.c b/client/cmddata.c index faea2dc3..8f93ba17 100644 --- a/client/cmddata.c +++ b/client/cmddata.c @@ -8,25 +8,29 @@ // Data and Graph commands //----------------------------------------------------------------------------- -#include -#include -#include -#include -#include "proxmark3.h" -#include "data.h" -#include "ui.h" -#include "graph.h" -#include "cmdparser.h" +#include "cmddata.h" + +#include // also included in util.h +#include // also included in util.h +#include +#include // for CmdNorm INT_MIN && INT_MAX #include "util.h" #include "cmdmain.h" -#include "cmddata.h" -#include "lfdemod.h" -#include "usb_cmd.h" -#include "crc.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 +#include "usb_cmd.h" // already included in cmdmain.h and proxmark3.h +#include "lfdemod.h" // for demod code +#include "loclass/cipherutils.h" // for decimating samples in getsamples +#include "cmdlfem4x.h"// for em410x demod uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN]; -uint8_t g_debugMode; -int DemodBufferLen; +uint8_t g_debugMode=0; +size_t DemodBufferLen=0; +int g_DemodStartIdx=0; +int g_DemodClock=0; + static int CmdHelp(const char *Cmd); //set the demod buffer with given array of binary (one bit per byte) @@ -36,8 +40,8 @@ void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx) if (buff == NULL) return; - if ( size >= MAX_DEMOD_BUF_LEN) - size = MAX_DEMOD_BUF_LEN; + if ( size > MAX_DEMOD_BUF_LEN - startIdx) + size = MAX_DEMOD_BUF_LEN - startIdx; size_t i = 0; for (; i < size; i++){ @@ -47,6 +51,42 @@ void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx) return; } +bool getDemodBuf(uint8_t *buff, size_t *size) { + if (buff == NULL) return false; + if (size == NULL) return false; + if (*size == 0) return false; + + *size = (*size > DemodBufferLen) ? DemodBufferLen : *size; + + memcpy(buff, DemodBuffer, *size); + return true; +} + +// option '1' to save DemodBuffer any other to restore +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 == 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; +} + int CmdSetDebugMode(const char *Cmd) { int demod=0; @@ -55,164 +95,89 @@ int CmdSetDebugMode(const char *Cmd) return 1; } +int usage_data_printdemodbuf(){ + PrintAndLog("Usage: data printdemodbuffer x o l "); + PrintAndLog("Options: "); + PrintAndLog(" h This help"); + 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; +} + //by marshmellow void printDemodBuff(void) { - uint32_t i = 0; int bitLen = DemodBufferLen; - if (bitLen<16) { + if (bitLen<1) { PrintAndLog("no bits found in demod buffer"); return; } if (bitLen>512) bitLen=512; //max output to 512 bits if we have more - should be plenty - // ensure equally divided by 16 - bitLen &= 0xfff0; - - 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", - DemodBuffer[i], - DemodBuffer[i+1], - DemodBuffer[i+2], - DemodBuffer[i+3], - DemodBuffer[i+4], - DemodBuffer[i+5], - DemodBuffer[i+6], - DemodBuffer[i+7], - DemodBuffer[i+8], - DemodBuffer[i+9], - DemodBuffer[i+10], - DemodBuffer[i+11], - DemodBuffer[i+12], - DemodBuffer[i+13], - DemodBuffer[i+14], - DemodBuffer[i+15] - ); - } + char *bin = sprint_bin_break(DemodBuffer,bitLen,16); + PrintAndLog("%s",bin); + return; } int CmdPrintDemodBuff(const char *Cmd) { - char hex; - char printBuff[512]={0x00}; - uint8_t numBits = DemodBufferLen & 0xFFF0; - sscanf(Cmd, "%c", &hex); - if (hex == 'h'){ - PrintAndLog("Usage: data printdemodbuffer [x]"); - PrintAndLog("Options: "); - PrintAndLog(" h This help"); - PrintAndLog(" x output in hex (omit for binary output)"); - return 0; - } - if (hex == 'x'){ - numBits = binarraytohex(printBuff, (char *)DemodBuffer, numBits); - if (numBits==0) return 0; - PrintAndLog("DemodBuffer: %s",printBuff); - } else { - printDemodBuff(); - } - return 1; -} -int CmdAmp(const char *Cmd) -{ - int i, rising, falling; - int max = INT_MIN, min = INT_MAX; - - for (i = 10; i < GraphTraceLen; ++i) { - if (GraphBuffer[i] > max) - max = GraphBuffer[i]; - if (GraphBuffer[i] < min) - min = GraphBuffer[i]; - } - - if (max != min) { - rising = falling= 0; - for (i = 0; i < GraphTraceLen; ++i) { - if (GraphBuffer[i + 1] < GraphBuffer[i]) { - if (rising) { - GraphBuffer[i] = max; - rising = 0; - } - falling = 1; - } - if (GraphBuffer[i + 1] > GraphBuffer[i]) { - if (falling) { - GraphBuffer[i] = min; - falling = 0; - } - rising= 1; - } + char hex[512]={0x00}; + bool hexMode = false; + bool errors = false; + uint32_t offset = 0; //could be size_t but no param_get16... + uint32_t length = 512; + char cmdp = 0; + while(param_getchar(Cmd, cmdp) != 0x00) + { + switch(param_getchar(Cmd, cmdp)) + { + case 'h': + case 'H': + return usage_data_printdemodbuf(); + case 'x': + case 'X': + hexMode = true; + cmdp++; + break; + case 'o': + case 'O': + offset = param_get32ex(Cmd, cmdp+1, 0, 10); + if (!offset) errors = true; + cmdp += 2; + break; + case 'l': + case 'L': + length = param_get32ex(Cmd, cmdp+1, 512, 10); + if (!length) errors = true; + cmdp += 2; + break; + default: + PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp)); + errors = true; + break; } + if(errors) break; } - RepaintGraphWindow(); - return 0; -} + //Validations + if(errors) return usage_data_printdemodbuf(); + length = (length > (DemodBufferLen-offset)) ? DemodBufferLen-offset : length; + int numBits = (length) & 0x00FFC; //make sure we don't exceed our string -/* - * Generic command to demodulate ASK. - * - * Argument is convention: positive or negative (High mod means zero - * or high mod means one) - * - * Updates the Graph trace with 0/1 values - * - * Arguments: - * c : 0 or 1 (or invert) - */ - //this method ignores the clock - - //this function strictly converts highs and lows to 1s and 0s for each sample in the graphbuffer -int Cmdaskdemod(const char *Cmd) -{ - int i; - int c, high = 0, low = 0; - - sscanf(Cmd, "%i", &c); - - /* Detect high and lows */ - for (i = 0; i < GraphTraceLen; ++i) - { - if (GraphBuffer[i] > high) - high = GraphBuffer[i]; - else if (GraphBuffer[i] < low) - low = GraphBuffer[i]; - } - high=abs(high*.75); - low=abs(low*.75); - if (c != 0 && c != 1) { - PrintAndLog("Invalid argument: %s", Cmd); - return 0; - } - //prime loop - if (GraphBuffer[0] > 0) { - GraphBuffer[0] = 1-c; + if (hexMode){ + char *buf = (char *) (DemodBuffer + offset); + numBits = (numBits > sizeof(hex)) ? sizeof(hex) : numBits; + numBits = binarraytohex(hex, buf, numBits); + if (numBits==0) return 0; + PrintAndLog("DemodBuffer: %s",hex); } else { - GraphBuffer[0] = c; - } - for (i = 1; i < GraphTraceLen; ++i) { - /* Transitions are detected at each peak - * Transitions are either: - * - we're low: transition if we hit a high - * - we're high: transition if we hit a low - * (we need to do it this way because some tags keep high or - * 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))){ - GraphBuffer[i] = c; - } else { - /* No transition */ - GraphBuffer[i] = GraphBuffer[i - 1]; - } + PrintAndLog("DemodBuffer:\n%s", sprint_bin_break(DemodBuffer+offset,numBits,16)); } - RepaintGraphWindow(); - return 0; + return 1; } +//by marshmellow //this function strictly converts >1 to 1 and <1 to 0 for each sample in the graphbuffer int CmdGetBitStream(const char *Cmd) { @@ -229,194 +194,22 @@ int CmdGetBitStream(const char *Cmd) return 0; } - //by marshmellow -void printBitStream(uint8_t BitStream[], uint32_t bitLen) -{ - uint32_t i = 0; - if (bitLen<16) { - PrintAndLog("Too few bits found: %d",bitLen); - return; - } - if (bitLen>512) bitLen=512; - - // ensure equally divided by 16 - bitLen &= 0xfff0; - - - 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 -//print 64 bit EM410x ID in multiple formats -void printEM410x(uint32_t hi, uint64_t id) -{ - if (id || hi){ - uint64_t iii=1; - uint64_t id2lo=0; - uint32_t ii=0; - uint32_t i=0; - for (ii=5; ii>0;ii--){ - for (i=0;i<8;i++){ - id2lo=(id2lo<<1LL) | ((id & (iii << (i+((ii-1)*8)))) >> (i+((ii-1)*8))); - } - } - if (hi){ - //output 88 bit em id - PrintAndLog("\nEM TAG ID : %06x%016llx", hi, id); - } else{ - //output 40 bit em id - PrintAndLog("\nEM TAG ID : %010llx", id); - PrintAndLog("Unique TAG ID : %010llx", id2lo); - PrintAndLog("\nPossible de-scramble patterns"); - PrintAndLog("HoneyWell IdentKey {"); - PrintAndLog("DEZ 8 : %08lld",id & 0xFFFFFF); - PrintAndLog("DEZ 10 : %010lld",id & 0xFFFFFFFF); - PrintAndLog("DEZ 5.5 : %05lld.%05lld",(id>>16LL) & 0xFFFF,(id & 0xFFFF)); - PrintAndLog("DEZ 3.5A : %03lld.%05lld",(id>>32ll),(id & 0xFFFF)); - PrintAndLog("DEZ 3.5B : %03lld.%05lld",(id & 0xFF000000) >> 24,(id & 0xFFFF)); - PrintAndLog("DEZ 3.5C : %03lld.%05lld",(id & 0xFF0000) >> 16,(id & 0xFFFF)); - PrintAndLog("DEZ 14/IK2 : %014lld",id); - PrintAndLog("DEZ 15/IK3 : %015lld",id2lo); - PrintAndLog("DEZ 20/ZK : %02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld", - (id2lo & 0xf000000000) >> 36, - (id2lo & 0x0f00000000) >> 32, - (id2lo & 0x00f0000000) >> 28, - (id2lo & 0x000f000000) >> 24, - (id2lo & 0x0000f00000) >> 20, - (id2lo & 0x00000f0000) >> 16, - (id2lo & 0x000000f000) >> 12, - (id2lo & 0x0000000f00) >> 8, - (id2lo & 0x00000000f0) >> 4, - (id2lo & 0x000000000f) - ); - uint64_t paxton = (((id>>32) << 24) | (id & 0xffffff)) + 0x143e00; - PrintAndLog("}\nOther : %05lld_%03lld_%08lld",(id&0xFFFF),((id>>16LL) & 0xFF),(id & 0xFFFFFF)); - PrintAndLog("Pattern Paxton : %0d", paxton); - - uint32_t p1id = (id & 0xFFFFFF); - uint8_t arr[32] = {0x00}; - int i =0; - int j = 23; - for (; i < 24; ++i, --j ){ - arr[i] = (p1id >> i) & 1; - } - - uint32_t p1 = 0; - - p1 |= arr[23] << 21; - p1 |= arr[22] << 23; - p1 |= arr[21] << 20; - p1 |= arr[20] << 22; - - p1 |= arr[19] << 18; - p1 |= arr[18] << 16; - p1 |= arr[17] << 19; - p1 |= arr[16] << 17; - - p1 |= arr[15] << 13; - p1 |= arr[14] << 15; - p1 |= arr[13] << 12; - p1 |= arr[12] << 14; - - p1 |= arr[11] << 6; - p1 |= arr[10] << 2; - p1 |= arr[9] << 7; - p1 |= arr[8] << 1; - - p1 |= arr[7] << 0; - p1 |= arr[6] << 8; - p1 |= arr[5] << 11; - p1 |= arr[4] << 3; - - p1 |= arr[3] << 10; - p1 |= arr[2] << 4; - p1 |= arr[1] << 5; - p1 |= arr[0] << 9; - PrintAndLog("Pattern 1 : 0x%X - %d", p1, p1); - - uint16_t sebury1 = id & 0xFFFF; - uint8_t sebury2 = (id >> 16) & 0x7F; - uint32_t sebury3 = id & 0x7FFFFF; - PrintAndLog("Pattern Sebury : %d %d %d (hex: %X %X %X)", sebury1, sebury2, sebury3, sebury1, sebury2, sebury3); - } - } - return; -} - - -int AskEm410xDemod(const char *Cmd, uint32_t *hi, uint64_t *lo) -{ - int ans = ASKmanDemod(Cmd, FALSE, FALSE); - if (!ans) return 0; - - size_t idx=0; - if (Em410xDecode(DemodBuffer,(size_t *) &DemodBufferLen, &idx, hi, lo)){ - if (g_debugMode){ - PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, DemodBufferLen); - printDemodBuff(); - } - return 1; - } - return 0; -} -//by marshmellow -//takes 3 arguments - clock, invert and maxErr as integers -//attempts to demodulate ask while decoding manchester -//prints binary found and saves in graphbuffer for further commands -int CmdAskEM410xDemod(const char *Cmd) -{ - char cmdp = param_getchar(Cmd, 0); - if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') { - PrintAndLog("Usage: data askem410xdemod [clock] <0|1> [maxError]"); - PrintAndLog(" [set clock as integer] optional, if not set, autodetect."); - PrintAndLog(" , 1 for invert output"); - PrintAndLog(" [set maximum allowed errors], default = 100."); - PrintAndLog(""); - PrintAndLog(" sample: data askem410xdemod = demod an EM410x Tag ID from GraphBuffer"); - PrintAndLog(" : data askem410xdemod 32 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32"); - PrintAndLog(" : data askem410xdemod 32 1 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32 and inverting data"); - PrintAndLog(" : data askem410xdemod 1 = demod an EM410x Tag ID from GraphBuffer while inverting data"); - PrintAndLog(" : data askem410xdemod 64 1 0 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/64 and inverting data and allowing 0 demod errors"); - return 0; - } - uint32_t hi = 0; - uint64_t lo = 0; - if (AskEm410xDemod(Cmd, &hi, &lo)) { - PrintAndLog("EM410x pattern found: "); - printEM410x(hi, lo); - return 1; - } - return 0; -} - -int ASKmanDemod(const char *Cmd, bool verbose, bool emSearch) -{ +//Cmd Args: Clock, invert, maxErr, maxLen as integers and amplify as char == 'a' +// (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 +int ASKDemod_ext(const char *Cmd, bool verbose, bool emSearch, uint8_t askType, bool *stCheck) { int invert=0; int clk=0; int maxErr=100; - + int maxLen=0; + uint8_t askamp = 0; + char amp = param_getchar(Cmd, 0); uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; - sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr); + sscanf(Cmd, "%i %i %i %i %c", &clk, &invert, &maxErr, &maxLen, &); + if (!maxLen) maxLen = BIGBUF_SIZE; if (invert != 0 && invert != 1) { PrintAndLog("Invalid argument: %s", Cmd); return 0; @@ -426,55 +219,79 @@ int ASKmanDemod(const char *Cmd, bool verbose, bool emSearch) clk=0; } size_t BitLen = getFromGraphBuf(BitStream); - if (g_debugMode==1) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen); - if (BitLen==0) return 0; - int errCnt=0; - errCnt = askmandemod(BitStream, &BitLen, &clk, &invert, maxErr); - if (errCnt<0||BitLen<16){ //if fatal error (or -1) - if (g_debugMode==1) PrintAndLog("no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk); + if (g_debugMode) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen); + if (BitLen < 255) return 0; + if (maxLen < BitLen && maxLen != 0) BitLen = maxLen; + int foundclk = 0; + //amp before ST check + if (amp == 'a' || amp == 'A') { + askAmp(BitStream, BitLen); + } + bool st = false; + size_t ststart = 0, stend = 0; + if (*stCheck) st = DetectST(BitStream, &BitLen, &foundclk, &ststart, &stend); + *stCheck = st; + if (st) { + clk = (clk == 0) ? foundclk : clk; + CursorCPos = ststart; + CursorDPos = stend; + if (verbose || g_debugMode) PrintAndLog("\nFound Sequence Terminator - First one is shown by orange and blue graph markers"); + //Graph ST trim (for testing) + //for (int i = 0; i < BitLen; i++) { + // GraphBuffer[i] = BitStream[i]-128; + //} + //RepaintGraphWindow(); + } + int startIdx = 0; + int errCnt = askdemod_ext(BitStream, &BitLen, &clk, &invert, maxErr, askamp, askType, &startIdx); + if (errCnt<0 || BitLen<16){ //if fatal error (or -1) + if (g_debugMode) PrintAndLog("DEBUG: no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk); return 0; } - if (verbose || g_debugMode) PrintAndLog("\nUsing Clock: %d - Invert: %d - Bits Found: %d",clk,invert,BitLen); - - //output - if (errCnt>0){ - if (verbose || g_debugMode) PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt); + if (errCnt > maxErr){ + if (g_debugMode) PrintAndLog("DEBUG: Too many errors found, errors:%d, bits:%d, clock:%d",errCnt, BitLen, clk); + return 0; } - if (verbose || g_debugMode) PrintAndLog("ASK/Manchester decoded bitstream:"); - // Now output the bitstream to the scrollback by line of 16 bits + if (verbose || g_debugMode) PrintAndLog("\nUsing Clock:%d, Invert:%d, Bits Found:%d",clk,invert,BitLen); + //output setDemodBuf(BitStream,BitLen,0); - if (verbose || g_debugMode) printDemodBuff(); - uint64_t lo =0; - uint32_t hi =0; - size_t idx=0; + setClockGrid(clk, startIdx); + + if (verbose || g_debugMode){ + if (errCnt>0) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt); + if (askType) PrintAndLog("ASK/Manchester - Clock: %d - Decoded bitstream:",clk); + 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; if (emSearch){ - if (Em410xDecode(BitStream, &BitLen, &idx, &hi, &lo)){ - //set GraphBuffer for clone or sim command - setDemodBuf(BitStream, BitLen, idx); - if (g_debugMode){ - PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen); - printDemodBuff(); - } - if (verbose) PrintAndLog("EM410x pattern found: "); - if (verbose) printEM410x(hi, lo); - return 1; - } + AskEm410xDecode(true, &hi, &lo); } return 1; } +int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType) { + bool st = false; + return ASKDemod_ext(Cmd, verbose, emSearch, askType, &st); +} //by marshmellow -//takes 3 arguments - clock, invert, maxErr as integers +//takes 5 arguments - clock, invert, maxErr, maxLen as integers and amplify as char == 'a' //attempts to demodulate ask while decoding manchester //prints binary found and saves in graphbuffer for further commands int Cmdaskmandemod(const char *Cmd) { char cmdp = param_getchar(Cmd, 0); - if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') { - PrintAndLog("Usage: data rawdemod am [clock] <0|1> [maxError]"); - PrintAndLog(" [set clock as integer] optional, if not set, autodetect."); - PrintAndLog(" , 1 for invert output"); - PrintAndLog(" [set maximum allowed errors], default = 100."); + if (strlen(Cmd) > 45 || cmdp == 'h' || cmdp == 'H') { + PrintAndLog("Usage: data rawdemod am [clock] [maxError] [maxLen] [amplify]"); + PrintAndLog(" ['s'] optional, check for Sequence Terminator"); + PrintAndLog(" [set clock as integer] optional, if not set, autodetect"); + PrintAndLog(" , 1 to invert output"); + PrintAndLog(" [set maximum allowed errors], default = 100"); + PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)"); + PrintAndLog(" , 'a' to attempt demod with ask amplification, default = no amp"); PrintAndLog(""); PrintAndLog(" sample: data rawdemod am = demod an ask/manchester tag from GraphBuffer"); PrintAndLog(" : data rawdemod am 32 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32"); @@ -483,7 +300,13 @@ int Cmdaskmandemod(const char *Cmd) PrintAndLog(" : data rawdemod am 64 1 0 = demod an ask/manchester tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors"); return 0; } - return ASKmanDemod(Cmd, TRUE, TRUE); + bool st = true; + 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); + else + return ASKDemod(Cmd, true, false, 1); } //by marshmellow @@ -494,36 +317,42 @@ int Cmdmandecoderaw(const char *Cmd) int i =0; int errCnt=0; size_t size=0; - size_t maxErr = 20; + int invert=0; + int maxErr = 20; char cmdp = param_getchar(Cmd, 0); - if (strlen(Cmd) > 1 || cmdp == 'h' || cmdp == 'H') { - PrintAndLog("Usage: data manrawdecode"); + if (strlen(Cmd) > 5 || cmdp == 'h' || cmdp == 'H') { + 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(""); PrintAndLog(" sample: data manrawdecode = decode manchester bitstream from the demodbuffer"); return 0; } if (DemodBufferLen==0) return 0; - uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; + uint8_t BitStream[MAX_DEMOD_BUF_LEN]={0}; int high=0,low=0; for (;ihigh) high=DemodBuffer[i]; else if(DemodBuffer[i]1 || low <0 ){ - PrintAndLog("Error: please raw demod the wave first then mancheseter raw decode"); + if (high>7 || low <0 ){ + PrintAndLog("Error: please raw demod the wave first then manchester raw decode"); return 0; } + + sscanf(Cmd, "%i %i", &invert, &maxErr); size=i; - errCnt=manrawdecode(BitStream, &size); + uint8_t alignPos = 0; + errCnt=manrawdecode(BitStream, &size, invert, &alignPos); if (errCnt>=maxErr){ PrintAndLog("Too many errors: %d",errCnt); return 0; } PrintAndLog("Manchester Decoded - # errors:%d - data:",errCnt); - printBitStream(BitStream, size); + PrintAndLog("%s", sprint_bin_break(BitStream, size, 16)); if (errCnt==0){ uint64_t id = 0; uint32_t hi = 0; @@ -538,22 +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 -// since it is not like manchester and doesn't have an incorrect bit pattern we -// cannot determine if our decode is correct or if it should be shifted by one bit -// the argument offset allows us to manually shift if the output is incorrect -// (better would be to demod and decode at the same time so we can distinguish large -// width waves vs small width waves to help the decode positioning) or askbiphdemod +/** + * @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)"); @@ -568,14 +395,14 @@ int CmdBiphaseDecodeRaw(const char *Cmd) return 0; } sscanf(Cmd, "%i %i %i", &offset, &invert, &maxErr); - if (DemodBufferLen==0){ + if (DemodBufferLen==0) { PrintAndLog("DemodBuffer Empty - run 'data rawdemod ar' first"); return 0; } - uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; - memcpy(BitStream, DemodBuffer, DemodBufferLen); - size = DemodBufferLen; - errCnt=BiphaseRawDecode(BitStream, &size, offset, invert); + uint8_t BitStream[MAX_DEMOD_BUF_LEN]={0}; + size = sizeof(BitStream); + if ( !getDemodBuf(BitStream, &size) ) return 0; + errCnt=BiphaseRawDecode(BitStream, &size, &offset, invert); if (errCnt<0){ PrintAndLog("Error during decode:%d", errCnt); return 0; @@ -586,84 +413,14 @@ int CmdBiphaseDecodeRaw(const char *Cmd) } if (errCnt>0){ - PrintAndLog("# Errors found during Demod (shown as 77 in bit stream): %d",errCnt); + PrintAndLog("# Errors found during Demod (shown as 7 in bit stream): %d",errCnt); } + PrintAndLog("Biphase Decoded using offset: %d - # invert:%d - data:",offset,invert); - printBitStream(BitStream, size); + PrintAndLog("%s", sprint_bin_break(BitStream, size, 16)); if (offset) setDemodBuf(DemodBuffer,DemodBufferLen-offset, offset); //remove first bit from raw demod - return 1; -} - -// set demod buffer back to raw after biphase demod -void setBiphasetoRawDemodBuf(uint8_t *BitStream, size_t size) -{ - uint8_t rawStream[512]={0x00}; - size_t i=0; - uint8_t curPhase=0; - if (size > 256) { - PrintAndLog("ERROR - Biphase Demod Buffer overrun"); - return; - } - for (size_t idx=0; idx0 && (verbose || g_debugMode)){ - PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d", errCnt); - } - if (verbose || g_debugMode){ - PrintAndLog("ASK demoded bitstream:"); - // Now output the bitstream to the scrollback by line of 16 bits - printBitStream(BitStream,BitLen); - } + setClockGrid(g_DemodClock, g_DemodStartIdx + g_DemodClock*offset/2); return 1; } @@ -672,35 +429,34 @@ int ASKrawDemod(const char *Cmd, bool verbose) int ASKbiphaseDemod(const char *Cmd, bool verbose) { //ask raw demod GraphBuffer first - int offset=0, clk=0, invert=0, maxErr=0, ans=0; - ans = sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr); - if (ans>0) - ans = ASKrawDemod(Cmd+2, FALSE); - else - ans = ASKrawDemod(Cmd, FALSE); - if (!ans) { - if (g_debugMode || verbose) PrintAndLog("Error AskrawDemod: %d", ans); - return 0; - } + int offset=0, clk=0, invert=0, maxErr=100; + sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr); - //attempt to Biphase decode DemodBuffer - size_t size = DemodBufferLen; - uint8_t BitStream[MAX_DEMOD_BUF_LEN]; - memcpy(BitStream, DemodBuffer, DemodBufferLen); + 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 = BiphaseRawDecode(BitStream, &size, offset, invert); + //attempt to Biphase decode BitStream + errCnt = BiphaseRawDecode(BitStream, &size, &offset, invert); if (errCnt < 0){ if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode: %d", errCnt); return 0; - } + } if (errCnt > maxErr) { if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode too many errors: %d", errCnt); return 0; } //success set DemodBuffer and return setDemodBuf(BitStream, size, 0); + setClockGrid(clk, startIdx + clk*offset/2); if (g_debugMode || verbose){ - PrintAndLog("Biphase Decoded using offset: %d - # errors:%d - data:",offset,errCnt); + PrintAndLog("Biphase Decoded using offset: %d - clock: %d - # errors:%d - data:",offset,clk,errCnt); printDemodBuff(); } return 1; @@ -709,12 +465,13 @@ int ASKbiphaseDemod(const char *Cmd, bool verbose) int Cmdaskbiphdemod(const char *Cmd) { char cmdp = param_getchar(Cmd, 0); - if (strlen(Cmd) > 12 || cmdp == 'h' || cmdp == 'H') { - PrintAndLog("Usage: data rawdemod ab [offset] [clock] [maxError] "); + if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') { + PrintAndLog("Usage: data rawdemod ab [offset] [clock] [maxError] [maxLen] "); PrintAndLog(" [offset], offset to begin biphase, default=0"); PrintAndLog(" [set clock as integer] optional, if not set, autodetect"); PrintAndLog(" , 1 to invert output"); PrintAndLog(" [set maximum allowed errors], default = 100"); + PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)"); PrintAndLog(" , 'a' to attempt demod with ask amplification, default = no amp"); PrintAndLog(" NOTE: can be entered as second or third argument"); PrintAndLog(" NOTE: can be entered as first, second or last argument"); @@ -722,158 +479,80 @@ int Cmdaskbiphdemod(const char *Cmd) PrintAndLog(""); PrintAndLog(" NOTE: --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester"); PrintAndLog(""); - PrintAndLog(" sample: data rawdemod ab = demod an ask/biph tag from GraphBuffer"); - PrintAndLog(" : data rawdemod ab a = demod an ask/biph tag from GraphBuffer, amplified"); - PrintAndLog(" : data rawdemod ab 1 32 = demod an ask/biph tag from GraphBuffer using an offset of 1 and a clock of RF/32"); - PrintAndLog(" : data rawdemod ab 0 32 1 = demod an ask/biph tag from GraphBuffer using a clock of RF/32 and inverting data"); - PrintAndLog(" : data rawdemod ab 0 1 = demod an ask/biph tag from GraphBuffer while inverting data"); - PrintAndLog(" : data rawdemod ab 0 64 1 0 = demod an ask/biph tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors"); - PrintAndLog(" : data rawdemod ab 0 64 1 0 a = demod an ask/biph tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors, and amp"); + PrintAndLog(" sample: data rawdemod ab = demod an ask/biph tag from GraphBuffer"); + PrintAndLog(" : data rawdemod ab 0 a = demod an ask/biph tag from GraphBuffer, amplified"); + PrintAndLog(" : data rawdemod ab 1 32 = demod an ask/biph tag from GraphBuffer using an offset of 1 and a clock of RF/32"); + PrintAndLog(" : data rawdemod ab 0 32 1 = demod an ask/biph tag from GraphBuffer using a clock of RF/32 and inverting data"); + PrintAndLog(" : data rawdemod ab 0 1 = demod an ask/biph tag from GraphBuffer while inverting data"); + PrintAndLog(" : data rawdemod ab 0 64 1 0 = demod an ask/biph tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors"); + PrintAndLog(" : data rawdemod ab 0 64 1 0 0 a = demod an ask/biph tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors, and amp"); return 0; } - return ASKbiphaseDemod(Cmd, TRUE); + return ASKbiphaseDemod(Cmd, true); } -//by marshmellow -//attempts to demodulate and identify a G_Prox_II verex/chubb card -//WARNING: if it fails during some points it will destroy the DemodBuffer data -// but will leave the GraphBuffer intact. -//if successful it will push askraw data back to demod buffer ready for emulation -int CmdG_Prox_II_Demod(const char *Cmd) -{ - if (!ASKbiphaseDemod(Cmd, FALSE)){ - if (g_debugMode) PrintAndLog("ASKbiphaseDemod failed 1st try"); - return 0; - } - size_t size = DemodBufferLen; - //call lfdemod.c demod for gProxII - int ans = gProxII_Demod(DemodBuffer, &size); - if (ans < 0){ - if (g_debugMode) PrintAndLog("Error gProxII_Demod"); - return 0; - } - //got a good demod - uint32_t ByteStream[65] = {0x00}; - uint8_t xorKey=0; - uint8_t keyCnt=0; - uint8_t bitCnt=0; - uint8_t ByteCnt=0; - size_t startIdx = ans + 6; //start after preamble - for (size_t idx = 0; idx>2; - uint32_t FC = 0; - uint32_t Card = 0; - uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans,32); - uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32); - uint32_t raw3 = bytebits_to_byte(DemodBuffer+ans+64, 32); - - if (fmtLen==36){ - FC = ((ByteStream[3] & 0x7F)<<7) | (ByteStream[4]>>1); - Card = ((ByteStream[4]&1)<<19) | (ByteStream[5]<<11) | (ByteStream[6]<<3) | (ByteStream[7]>>5); - PrintAndLog("G-Prox-II Found: FmtLen %d, FC %d, Card %d",fmtLen,FC,Card); - } else if(fmtLen==26){ - FC = ((ByteStream[3] & 0x7F)<<1) | (ByteStream[4]>>7); - Card = ((ByteStream[4]&0x7F)<<9) | (ByteStream[5]<<1) | (ByteStream[6]>>7); - PrintAndLog("G-Prox-II Found: FmtLen %d, FC %d, Card %d",fmtLen,FC,Card); - } else { - PrintAndLog("Unknown G-Prox-II Fmt Found: FmtLen %d",fmtLen); - } - PrintAndLog("Raw: %08x%08x%08x", raw1,raw2,raw3); - setDemodBuf(DemodBuffer+ans, 96, 0); - return 1; -} - -//by marshmellow - see ASKrawDemod +//by marshmellow - see ASKDemod int Cmdaskrawdemod(const char *Cmd) { char cmdp = param_getchar(Cmd, 0); - if (strlen(Cmd) > 12 || cmdp == 'h' || cmdp == 'H') { - PrintAndLog("Usage: data rawdemod ar [clock] [maxError] [amplify]"); + if (strlen(Cmd) > 35 || cmdp == 'h' || cmdp == 'H') { + PrintAndLog("Usage: data rawdemod ar [clock] [maxError] [maxLen] [amplify]"); PrintAndLog(" [set clock as integer] optional, if not set, autodetect"); PrintAndLog(" , 1 to invert output"); PrintAndLog(" [set maximum allowed errors], default = 100"); + PrintAndLog(" [set maximum Samples to read], default = 32768 (1024 bits at rf/64)"); PrintAndLog(" , 'a' to attempt demod with ask amplification, default = no amp"); PrintAndLog(""); - PrintAndLog(" sample: data rawdemod ar = demod an ask tag from GraphBuffer"); - PrintAndLog(" : data rawdemod ar a = demod an ask tag from GraphBuffer, amplified"); - PrintAndLog(" : data rawdemod ar 32 = demod an ask tag from GraphBuffer using a clock of RF/32"); - PrintAndLog(" : data rawdemod ar 32 1 = demod an ask tag from GraphBuffer using a clock of RF/32 and inverting data"); - PrintAndLog(" : data rawdemod ar 1 = demod an ask tag from GraphBuffer while inverting data"); - PrintAndLog(" : data rawdemod ar 64 1 0 = demod an ask tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors"); - PrintAndLog(" : data rawdemod ar 64 1 0 a = demod an ask tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors, and amp"); + PrintAndLog(" sample: data rawdemod ar = demod an ask tag from GraphBuffer"); + PrintAndLog(" : data rawdemod ar a = demod an ask tag from GraphBuffer, amplified"); + PrintAndLog(" : data rawdemod ar 32 = demod an ask tag from GraphBuffer using a clock of RF/32"); + PrintAndLog(" : data rawdemod ar 32 1 = demod an ask tag from GraphBuffer using a clock of RF/32 and inverting data"); + PrintAndLog(" : data rawdemod ar 1 = demod an ask tag from GraphBuffer while inverting data"); + PrintAndLog(" : data rawdemod ar 64 1 0 = demod an ask tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors"); + PrintAndLog(" : data rawdemod ar 64 1 0 0 a = demod an ask tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors, and amp"); return 0; } - return ASKrawDemod(Cmd, TRUE); + return ASKDemod(Cmd, true, false, 0); } -int AutoCorrelate(int window, bool SaveGrph, bool verbose) +int AutoCorrelate(const int *in, int *out, size_t len, int window, bool SaveGrph, bool verbose) { static int CorrelBuffer[MAX_GRAPH_TRACE_LEN]; size_t Correlation = 0; int maxSum = 0; int lastMax = 0; if (verbose) PrintAndLog("performing %d correlations", GraphTraceLen - window); - for (int i = 0; i < GraphTraceLen - window; ++i) { + for (int i = 0; i < len - window; ++i) { int sum = 0; for (int j = 0; j < window; ++j) { - sum += (GraphBuffer[j]*GraphBuffer[i + j]) / 256; + sum += (in[j]*in[i + j]) / 256; } CorrelBuffer[i] = sum; - if (sum >= maxSum-100 && sum <= maxSum+100){ + if (sum >= maxSum-100 && sum <= maxSum+100) { //another max Correlation = i-lastMax; lastMax = i; if (sum > maxSum) maxSum = sum; - } else if (sum > maxSum){ + } else if (sum > maxSum) { maxSum=sum; lastMax = i; } } - if (Correlation==0){ + if (Correlation==0) { //try again with wider margin - for (int i = 0; i < GraphTraceLen - window; i++){ - if (CorrelBuffer[i] >= maxSum-(maxSum*0.05) && CorrelBuffer[i] <= maxSum+(maxSum*0.05)){ + for (int i = 0; i < len - window; i++) { + if (CorrelBuffer[i] >= maxSum-(maxSum*0.05) && CorrelBuffer[i] <= maxSum+(maxSum*0.05)) { //another max Correlation = i-lastMax; lastMax = i; - //if (CorrelBuffer[i] > maxSum) maxSum = sum; } } } if (verbose && Correlation > 0) PrintAndLog("Possible Correlation: %d samples",Correlation); - if (SaveGrph){ - GraphTraceLen = GraphTraceLen - window; - memcpy(GraphBuffer, CorrelBuffer, GraphTraceLen * sizeof (int)); + if (SaveGrph) { + //GraphTraceLen = GraphTraceLen - window; + memcpy(out, CorrelBuffer, len * sizeof(int)); RepaintGraphWindow(); } return Correlation; @@ -897,7 +576,7 @@ int CmdAutoCorr(const char *Cmd) return usage_data_autocorr(); int window = 4000; //set default char grph=0; - bool updateGrph = FALSE; + bool updateGrph = false; sscanf(Cmd, "%i %c", &window, &grph); if (window >= GraphTraceLen) { @@ -905,8 +584,8 @@ int CmdAutoCorr(const char *Cmd) GraphTraceLen); return 0; } - if (grph == 'g') updateGrph=TRUE; - return AutoCorrelate(window, updateGrph, TRUE); + if (grph == 'g') updateGrph=true; + return AutoCorrelate(GraphBuffer, GraphBuffer, GraphTraceLen, window, updateGrph, true); } int CmdBitsamples(const char *Cmd) @@ -914,8 +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++) { @@ -931,67 +609,6 @@ int CmdBitsamples(const char *Cmd) return 0; } -/* - * Convert to a bitstream - */ -int CmdBitstream(const char *Cmd) -{ - int i, j; - int bit; - int gtl; - int clock; - int low = 0; - int high = 0; - int hithigh, hitlow, first; - - /* Detect high and lows and clock */ - for (i = 0; i < GraphTraceLen; ++i) - { - if (GraphBuffer[i] > high) - high = GraphBuffer[i]; - else if (GraphBuffer[i] < low) - low = GraphBuffer[i]; - } - - /* Get our clock */ - clock = GetAskClock(Cmd, high, 1); - gtl = ClearGraph(0); - - bit = 0; - for (i = 0; i < (int)(gtl / clock); ++i) - { - hithigh = 0; - hitlow = 0; - first = 1; - /* Find out if we hit both high and low peaks */ - for (j = 0; j < clock; ++j) - { - if (GraphBuffer[(i * clock) + j] == high) - hithigh = 1; - else if (GraphBuffer[(i * clock) + j] == low) - hitlow = 1; - /* it doesn't count if it's the first part of our read - because it's really just trailing from the last sequence */ - if (first && (hithigh || hitlow)) - hithigh = hitlow = 0; - else - first = 0; - - if (hithigh && hitlow) - break; - } - - /* If we didn't hit both high and low peaks, we had a bit transition */ - if (!hithigh || !hitlow) - bit ^= 1; - - AppendGraph(0, clock, bit); - } - - RepaintGraphWindow(); - return 0; -} - int CmdBuffClear(const char *Cmd) { UsbCommand c = {CMD_BUFF_CLEAR}; @@ -1032,16 +649,18 @@ int CmdUndec(const char *Cmd) uint8_t factor = param_get8ex(Cmd, 0,2, 10); //We have memory, don't we? int swap[MAX_GRAPH_TRACE_LEN] = { 0 }; - uint32_t g_index = 0 ,s_index = 0; - while(g_index < GraphTraceLen && s_index < MAX_GRAPH_TRACE_LEN) + uint32_t g_index = 0, s_index = 0; + while(g_index < GraphTraceLen && s_index + factor < MAX_GRAPH_TRACE_LEN) { int count = 0; - for(count = 0; count < factor && s_index+count < MAX_GRAPH_TRACE_LEN; count ++) + for(count = 0; count < factor && s_index + count < MAX_GRAPH_TRACE_LEN; count++) swap[s_index+count] = GraphBuffer[g_index]; - s_index+=count; + + s_index += count; + g_index++; } - memcpy(GraphBuffer,swap, s_index * sizeof(int)); + memcpy(GraphBuffer, swap, s_index * sizeof(int)); GraphTraceLen = s_index; RepaintGraphWindow(); return 0; @@ -1068,33 +687,31 @@ int CmdGraphShiftZero(const char *Cmd) return 0; } +int AskEdgeDetect(const int *in, int *out, int len, int threshold) { + int Last = 0; + for(int i = 1; i= threshold) //large jump up + Last = 127; + else if(in[i]-in[i-1] <= -1 * threshold) //large jump down + Last = -127; + out[i-1] = Last; + } + return 0; +} + //by marshmellow //use large jumps in read samples to identify edges of waves and then amplify that wave to max -//similar to dirtheshold, threshold, and askdemod 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); - int shift = 127; - int shiftedVal=0; - for(int i = 1; i=thresLen) //large jump up - shift=127; - else if(GraphBuffer[i]-GraphBuffer[i-1]<=-1*thresLen) //large jump down - shift=-127; - - shiftedVal=GraphBuffer[i]+shift; - if (shiftedVal>127) - shiftedVal=127; - else if (shiftedVal<-127) - shiftedVal=-127; - GraphBuffer[i-1] = shiftedVal; - } + ans = AskEdgeDetect(GraphBuffer, GraphBuffer, GraphTraceLen, thresLen); RepaintGraphWindow(); - //CmdNorm(""); - return 0; + return ans; } /* Print our clock rate */ @@ -1103,9 +720,10 @@ int CmdAskEdgeDetect(const char *Cmd) int CmdDetectClockRate(const char *Cmd) { char cmdp = param_getchar(Cmd, 0); - if (strlen(Cmd) > 3 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') { - PrintAndLog("Usage: data detectclock [modulation]"); + if (strlen(Cmd) > 6 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') { + PrintAndLog("Usage: data detectclock [modulation] "); PrintAndLog(" [modulation as char], specify the modulation type you want to detect the clock of"); + PrintAndLog(" , specify the clock (optional - to get best start position only)"); PrintAndLog(" 'a' = ask, 'f' = fsk, 'n' = nrz/direct, 'p' = psk"); PrintAndLog(""); PrintAndLog(" sample: data detectclock a = detect the clock of an ask modulated wave in the GraphBuffer"); @@ -1115,7 +733,7 @@ int CmdDetectClockRate(const char *Cmd) } int ans=0; if (cmdp == 'a'){ - ans = GetAskClock("", true, false); + ans = GetAskClock(Cmd+1, true, false); } else if (cmdp == 'f'){ ans = GetFskClock("", true, false); } else if (cmdp == 'n'){ @@ -1128,6 +746,27 @@ int CmdDetectClockRate(const char *Cmd) return ans; } +char *GetFSKType(uint8_t fchigh, uint8_t fclow, uint8_t invert) +{ + static char fType[8]; + memset(fType, 0x00, 8); + char *fskType = fType; + if (fchigh==10 && fclow==8){ + if (invert) //fsk2a + memcpy(fskType, "FSK2a", 5); + else //fsk2 + memcpy(fskType, "FSK2", 4); + } else if (fchigh == 8 && fclow == 5) { + if (invert) + memcpy(fskType, "FSK1", 4); + else + memcpy(fskType, "FSK1a", 5); + } else { + memcpy(fskType, "FSK??", 5); + } + return fskType; +} + //by marshmellow //fsk raw demod and print binary //takes 4 arguments - Clock, invert, fchigh, fclow @@ -1135,58 +774,57 @@ int CmdDetectClockRate(const char *Cmd) int FSKrawDemod(const char *Cmd, bool verbose) { //raw fsk demod no manchester decoding no start bit finding just get binary from wave + uint8_t rfLen, invert, fchigh, fclow; //set defaults - int rfLen = 0; - int invert = 0; - int fchigh = 0; - int fclow = 0; - //set options from parameters entered with the command - sscanf(Cmd, "%i %i %i %i", &rfLen, &invert, &fchigh, &fclow); + rfLen = param_get8(Cmd, 0); + invert = param_get8(Cmd, 1); + fchigh = param_get8(Cmd, 2); + fclow = param_get8(Cmd, 3); if (strlen(Cmd)>0 && strlen(Cmd)<=2) { - if (rfLen==1){ - invert=1; //if invert option only is used + if (rfLen==1) { + invert = 1; //if invert option only is used rfLen = 0; - } + } } - uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; size_t BitLen = getFromGraphBuf(BitStream); if (BitLen==0) return 0; //get field clock lengths uint16_t fcs=0; - uint8_t dummy=0; - if (fchigh==0 || fclow == 0){ - fcs = countFC(BitStream, BitLen, &dummy); - if (fcs==0){ - fchigh=10; - fclow=8; - }else{ - fchigh = (fcs >> 8) & 0xFF; - fclow = fcs & 0xFF; + if (!fchigh || !fclow) { + fcs = countFC(BitStream, BitLen, 1); + if (!fcs) { + fchigh = 10; + fclow = 8; + } else { + fchigh = (fcs >> 8) & 0x00FF; + fclow = fcs & 0x00FF; } } //get bit clock length - if (rfLen==0){ - rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow); - if (rfLen == 0) rfLen = 50; - } - if (verbose) PrintAndLog("Args invert: %d - Clock:%d - fchigh:%d - fclow: %d",invert,rfLen,fchigh, fclow); - int size = fskdemod(BitStream,BitLen,(uint8_t)rfLen,(uint8_t)invert,(uint8_t)fchigh,(uint8_t)fclow); - if (size>0){ + if (!rfLen) { + int firstClockEdge = 0; //todo - align grid on graph with this... + rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow, &firstClockEdge); + if (!rfLen) rfLen = 50; + } + int startIdx = 0; + 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 - 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 - if (verbose) { - PrintAndLog("FSK decoded bitstream:"); - printBitStream(BitStream,size); + // 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)); + printDemodBuff(); } return 1; - } else{ - if (verbose) PrintAndLog("no FSK data found"); + } else { + if (g_debugMode) PrintAndLog("no FSK data found"); } return 0; } @@ -1196,611 +834,25 @@ int FSKrawDemod(const char *Cmd, bool verbose) //takes 4 arguments - Clock, invert, fchigh, fclow //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a)) int CmdFSKrawdemod(const char *Cmd) -{ - char cmdp = param_getchar(Cmd, 0); - if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') { - PrintAndLog("Usage: data rawdemod fs [clock] [fchigh] [fclow]"); - PrintAndLog(" [set clock as integer] optional, omit for autodetect."); - PrintAndLog(" , 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 - uint8_t crc = bytebits_to_byte(BitStream+idx+54,8); - uint16_t calccrc = 0; - - for (uint8_t i=1; i<6; ++i){ - calccrc += bytebits_to_byte(BitStream+idx+9*i,8); - //PrintAndLog("%d", calccrc); - } - calccrc &= 0xff; - calccrc = 0xff - calccrc; - - char *crcStr = (crc == calccrc) ? "crc ok": "!crc"; - - PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x) [%02x %s]",version,facilitycode,number,code,code2, crc, crcStr); - 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; j32){ - //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'; - } +{ + char cmdp = param_getchar(Cmd, 0); + if (strlen(Cmd) > 20 || cmdp == 'h' || cmdp == 'H') { + PrintAndLog("Usage: data rawdemod fs [clock] [fchigh] [fclow]"); + PrintAndLog(" [set clock as integer] optional, omit for autodetect."); + PrintAndLog(" , 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; } - PrintAndLog("bits: '%s'", bits); - PrintAndLog("hex: %08x %08x", hi, lo); - return 0; + return FSKrawDemod(Cmd, true); } //by marshmellow @@ -1816,116 +868,33 @@ int PSKDemod(const char *Cmd, bool verbose) clk=0; } if (invert != 0 && invert != 1) { - if (verbose) PrintAndLog("Invalid argument: %s", Cmd); + if (g_debugMode || verbose) PrintAndLog("Invalid argument: %s", Cmd); return 0; } uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; size_t BitLen = getFromGraphBuf(BitStream); - if (BitLen==0) return -1; - uint8_t carrier=countPSK_FC(BitStream, BitLen); - if (carrier!=2 && carrier!=4 && carrier!=8){ - //invalid carrier - return 0; - } + if (BitLen==0) return 0; int errCnt=0; - errCnt = pskRawDemod(BitStream, &BitLen, &clk, &invert); + int startIdx = 0; + errCnt = pskRawDemod_ext(BitStream, &BitLen, &clk, &invert, &startIdx); if (errCnt > maxErr){ - if (g_debugMode==1 && verbose) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt); + 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==1 && verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt); + if (g_debugMode || verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt); return 0; } - if (verbose){ - PrintAndLog("Tried PSK Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen); + if (verbose || g_debugMode){ + PrintAndLog("\nUsing Clock:%d, invert:%d, Bits Found:%d",clk,invert,BitLen); if (errCnt>0){ - PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt); + PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt); } } //prime demod buffer for output setDemodBuf(BitStream,BitLen,0); - return 1; -} - -// Indala 26 bit decode -// by marshmellow -// optional arguments - same as CmdpskNRZrawDemod (clock & invert) -int CmdIndalaDecode(const char *Cmd) -{ - int ans; - if (strlen(Cmd)>0){ - ans = PSKDemod(Cmd, 0); - } else{ //default to RF/32 - ans = PSKDemod("32", 0); - } + setClockGrid(clk, startIdx); - if (!ans){ - if (g_debugMode==1) - PrintAndLog("Error1: %d",ans); - return 0; - } - uint8_t invert=0; - ans = indala26decode(DemodBuffer,(size_t *) &DemodBufferLen, &invert); - if (ans < 1) { - if (g_debugMode==1) - PrintAndLog("Error2: %d",ans); - return -1; - } - char showbits[251]={0x00}; - if (invert) - if (g_debugMode==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>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); - } - if (g_debugMode){ - PrintAndLog("DEBUG: printing demodbuffer:"); - printDemodBuff(); - } return 1; } @@ -1933,7 +902,6 @@ int CmdIndalaDecode(const char *Cmd) // takes 3 arguments - clock, invert, maxErr as integers // attempts to demodulate nrz only // prints binary found and saves in demodbuffer for further commands - int NRZrawDemod(const char *Cmd, bool verbose) { int invert=0; @@ -1952,20 +920,23 @@ int NRZrawDemod(const char *Cmd, bool verbose) size_t BitLen = getFromGraphBuf(BitStream); if (BitLen==0) return 0; int errCnt=0; - errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert, maxErr); + int clkStartIdx = 0; + errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert, &clkStartIdx); 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 (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; } if (verbose || g_debugMode) PrintAndLog("Tried NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen); //prime demod buffer for output setDemodBuf(BitStream,BitLen,0); + setClockGrid(clk, clkStartIdx); + - if (errCnt>0 && (verbose || g_debugMode)) PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt); + if (errCnt>0 && (verbose || g_debugMode)) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt); if (verbose || g_debugMode) { PrintAndLog("NRZ demoded bitstream:"); // Now output the bitstream to the scrollback by line of 16 bits @@ -1977,7 +948,7 @@ int NRZrawDemod(const char *Cmd, bool verbose) int CmdNRZrawDemod(const char *Cmd) { char cmdp = param_getchar(Cmd, 0); - if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') { + if (strlen(Cmd) > 16 || cmdp == 'h' || cmdp == 'H') { PrintAndLog("Usage: data rawdemod nr [clock] <0|1> [maxError]"); PrintAndLog(" [set clock as integer] optional, if not set, autodetect."); PrintAndLog(" , 1 for invert output"); @@ -1990,7 +961,7 @@ int CmdNRZrawDemod(const char *Cmd) PrintAndLog(" : data rawdemod nr 64 1 0 = demod a nrz/direct tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors"); return 0; } - return NRZrawDemod(Cmd, TRUE); + return NRZrawDemod(Cmd, true); } // by marshmellow @@ -2001,7 +972,7 @@ int CmdPSK1rawDemod(const char *Cmd) { int ans; char cmdp = param_getchar(Cmd, 0); - if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') { + if (strlen(Cmd) > 16 || cmdp == 'h' || cmdp == 'H') { PrintAndLog("Usage: data rawdemod p1 [clock] <0|1> [maxError]"); PrintAndLog(" [set clock as integer] optional, if not set, autodetect."); PrintAndLog(" , 1 for invert output"); @@ -2014,14 +985,14 @@ int CmdPSK1rawDemod(const char *Cmd) PrintAndLog(" : data rawdemod p1 64 1 0 = demod a psk1 tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors"); return 0; } - ans = PSKDemod(Cmd, TRUE); + ans = PSKDemod(Cmd, true); //output if (!ans){ if (g_debugMode) PrintAndLog("Error demoding: %d",ans); return 0; } - PrintAndLog("PSK demoded bitstream:"); + PrintAndLog("PSK1 demoded bitstream:"); // Now output the bitstream to the scrollback by line of 16 bits printDemodBuff(); return 1; @@ -2033,7 +1004,7 @@ int CmdPSK2rawDemod(const char *Cmd) { int ans=0; char cmdp = param_getchar(Cmd, 0); - if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') { + if (strlen(Cmd) > 16 || cmdp == 'h' || cmdp == 'H') { PrintAndLog("Usage: data rawdemod p2 [clock] <0|1> [maxError]"); PrintAndLog(" [set clock as integer] optional, if not set, autodetect."); PrintAndLog(" , 1 for invert output"); @@ -2046,7 +1017,7 @@ int CmdPSK2rawDemod(const char *Cmd) PrintAndLog(" : data rawdemod p2 64 1 0 = demod a psk2 tag from GraphBuffer using a clock of RF/64, inverting output and allowing 0 demod errors"); return 0; } - ans=PSKDemod(Cmd, TRUE); + ans=PSKDemod(Cmd, true); if (!ans){ if (g_debugMode) PrintAndLog("Error demoding: %d",ans); return 0; @@ -2063,7 +1034,7 @@ int CmdRawDemod(const char *Cmd) { char cmdp = Cmd[0]; //param_getchar(Cmd, 0); - if (strlen(Cmd) > 14 || cmdp == 'h' || cmdp == 'H' || strlen(Cmd)<2) { + 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(" 'nr' for nrz/direct, 'p1' for psk1, 'p2' for psk2"); @@ -2083,25 +1054,49 @@ int CmdRawDemod(const char *Cmd) char cmdp2 = Cmd[1]; int ans = 0; if (cmdp == 'f' && cmdp2 == 's'){ - ans = CmdFSKrawdemod(Cmd+3); + ans = CmdFSKrawdemod(Cmd+2); } else if(cmdp == 'a' && cmdp2 == 'b'){ - ans = Cmdaskbiphdemod(Cmd+3); + ans = Cmdaskbiphdemod(Cmd+2); } else if(cmdp == 'a' && cmdp2 == 'm'){ - ans = Cmdaskmandemod(Cmd+3); + ans = Cmdaskmandemod(Cmd+2); } else if(cmdp == 'a' && cmdp2 == 'r'){ - ans = Cmdaskrawdemod(Cmd+3); + ans = Cmdaskrawdemod(Cmd+2); } else if(cmdp == 'n' && cmdp2 == 'r'){ - ans = CmdNRZrawDemod(Cmd+3); + ans = CmdNRZrawDemod(Cmd+2); } else if(cmdp == 'p' && cmdp2 == '1'){ - ans = CmdPSK1rawDemod(Cmd+3); + ans = CmdPSK1rawDemod(Cmd+2); } else if(cmdp == 'p' && cmdp2 == '2'){ - ans = CmdPSK2rawDemod(Cmd+3); + ans = CmdPSK2rawDemod(Cmd+2); } else { PrintAndLog("unknown modulation entered - see help ('h') for parameter structure"); } return ans; } +void setClockGrid(int clk, int offset) { + g_DemodStartIdx = offset; + g_DemodClock = clk; + if (g_debugMode) PrintAndLog("demodoffset %d, clk %d",offset,clk); + + if (offset > clk) offset %= clk; + if (offset < 0) offset += clk; + + if (offset > GraphTraceLen || offset < 0) return; + if (clk < 8 || clk > GraphTraceLen) { + GridLocked = false; + GridOffset = 0; + PlotGridX = 0; + PlotGridXdefault = 0; + RepaintGraphWindow(); + } else { + GridLocked = true; + GridOffset = offset; + PlotGridX = clk; + PlotGridXdefault = clk; + RepaintGraphWindow(); + } +} + int CmdGrid(const char *Cmd) { sscanf(Cmd, "%i %i", &PlotGridX, &PlotGridY); @@ -2111,6 +1106,12 @@ int CmdGrid(const char *Cmd) return 0; } +int CmdSetGraphMarkers(const char *Cmd) { + sscanf(Cmd, "%i %i", &CursorCPos, &CursorDPos); + RepaintGraphWindow(); + return 0; +} + int CmdHexsamples(const char *Cmd) { int i, j; @@ -2131,8 +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++) { @@ -2175,31 +1175,19 @@ int CmdHpf(const char *Cmd) RepaintGraphWindow(); return 0; } -typedef struct { - uint8_t * buffer; - uint32_t numbits; - uint32_t position; -}BitstreamOut; - -bool _headBit( BitstreamOut *stream) -{ - int bytepos = stream->position >> 3; // divide by 8 - int bitpos = (stream->position++) & 7; // mask out 00000111 - return (*(stream->buffer + bytepos) >> (7-bitpos)) & 1; -} -uint8_t getByte(uint8_t bits_per_sample, BitstreamOut* b) +uint8_t getByte(uint8_t bits_per_sample, BitstreamIn* b) { int i; uint8_t val = 0; for(i =0 ; i < bits_per_sample; i++) { - val |= (_headBit(b) << (7-i)); + val |= (headBit(b) << (7-i)); } return val; } -int getSamples(const char *Cmd, bool silent) +int getSamples(int n, bool silent) { //If we get all but the last byte in bigbuf, // we don't have to worry about remaining trash @@ -2208,35 +1196,29 @@ int getSamples(const char *Cmd, bool silent) uint8_t got[BIGBUF_SIZE-1] = { 0 }; - int n = strtol(Cmd, NULL, 0); - - if (n == 0) - n = sizeof(got); - - if (n > sizeof(got)) + if (n == 0 || n > sizeof(got)) n = sizeof(got); - PrintAndLog("Reading %d bytes from device memory\n", n); - GetFromBigBuf(got,n,0); - PrintAndLog("Data fetched"); + if (!silent) PrintAndLog("Reading %d bytes from device memory\n", n); 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) { sample_config *sc = (sample_config *) response.d.asBytes; - PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc->bits_per_sample + 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) { - PrintAndLog("Unpacking..."); - BitstreamOut bout = { got, bits_per_sample * n, 0}; + if (!silent) PrintAndLog("Unpacking..."); + BitstreamIn bout = { got, bits_per_sample * n, 0}; int j =0; - for (j = 0; j * bits_per_sample < n * 8 && j < sizeof(GraphBuffer); j++) { + for (j = 0; j * bits_per_sample < n * 8 && j < n; j++) { uint8_t sample = getByte(bits_per_sample, &bout); GraphBuffer[j] = ((int) sample )- 128; } @@ -2250,21 +1232,34 @@ int getSamples(const char *Cmd, bool silent) GraphTraceLen = n; } + setClockGrid(0,0); + DemodBufferLen = 0; RepaintGraphWindow(); return 0; } int CmdSamples(const char *Cmd) { - return getSamples(Cmd, false); + int n = strtol(Cmd, NULL, 0); + return getSamples(n, false); } int CmdTuneSamples(const char *Cmd) { - int timeout = 0; + int timeout = 0, arg = FLAG_TUNE_ALL; + + if(*Cmd == 'l') { + arg = FLAG_TUNE_LF; + } else if (*Cmd == 'h') { + arg = FLAG_TUNE_HF; + } else if (*Cmd != '\0') { + PrintAndLog("use 'tune' or 'tune l' or 'tune h'"); + return 0; + } + printf("\nMeasuring antenna characteristics, please wait..."); - UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING}; + UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING, {arg, 0, 0}}; SendCommand(&c); UsbCommand resp; @@ -2285,26 +1280,36 @@ 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; } @@ -2342,6 +1347,8 @@ int CmdLoad(const char *Cmd) } fclose(f); PrintAndLog("loaded %d samples", GraphTraceLen); + setClockGrid(0,0); + DemodBufferLen = 0; RepaintGraphWindow(); return 0; } @@ -2349,7 +1356,7 @@ int CmdLoad(const char *Cmd) int CmdLtrim(const char *Cmd) { int ds = atoi(Cmd); - + if (GraphTraceLen<=0) return 0; for (int i = ds; i < GraphTraceLen; ++i) GraphBuffer[i-ds] = GraphBuffer[i]; GraphTraceLen -= ds; @@ -2369,244 +1376,21 @@ int CmdRtrim(const char *Cmd) return 0; } -/* - * Manchester demodulate a bitstream. The bitstream needs to be already in - * the GraphBuffer as 0 and 1 values - * - * Give the clock rate as argument in order to help the sync - the algorithm - * resyncs at each pulse anyway. - * - * Not optimized by any means, this is the 1st time I'm writing this type of - * routine, feel free to improve... - * - * 1st argument: clock rate (as number of samples per clock rate) - * Typical values can be 64, 32, 128... - */ -int CmdManchesterDemod(const char *Cmd) -{ - int i, j, invert= 0; - int bit; - int clock; - int lastval = 0; - int low = 0; - int high = 0; - int hithigh, hitlow, first; - int lc = 0; - int bitidx = 0; - int bit2idx = 0; - int warnings = 0; - - /* check if we're inverting output */ - if (*Cmd == 'i') - { - PrintAndLog("Inverting output"); - invert = 1; - ++Cmd; - do - ++Cmd; - while(*Cmd == ' '); // in case a 2nd argument was given - } - - /* Holds the decoded bitstream: each clock period contains 2 bits */ - /* later simplified to 1 bit after manchester decoding. */ - /* Add 10 bits to allow for noisy / uncertain traces without aborting */ - /* int BitStream[GraphTraceLen*2/clock+10]; */ - - /* But it does not work if compiling on WIndows: therefore we just allocate a */ - /* large array */ - uint8_t BitStream[MAX_GRAPH_TRACE_LEN] = {0}; - - /* Detect high and lows */ - for (i = 0; i < GraphTraceLen; i++) - { - if (GraphBuffer[i] > high) - high = GraphBuffer[i]; - else if (GraphBuffer[i] < low) - low = GraphBuffer[i]; - } - - /* Get our clock */ - clock = GetAskClock(Cmd, high, 1); - - int tolerance = clock/4; - - /* Detect first transition */ - /* Lo-Hi (arbitrary) */ - /* skip to the first high */ - for (i= 0; i < GraphTraceLen; i++) - if (GraphBuffer[i] == high) - break; - /* now look for the first low */ - for (; i < GraphTraceLen; i++) - { - if (GraphBuffer[i] == low) - { - lastval = i; - break; - } - } - - /* If we're not working with 1/0s, demod based off clock */ - if (high != 1) - { - bit = 0; /* We assume the 1st bit is zero, it may not be - * the case: this routine (I think) has an init problem. - * Ed. - */ - for (; i < (int)(GraphTraceLen / clock); i++) - { - hithigh = 0; - hitlow = 0; - first = 1; - - /* Find out if we hit both high and low peaks */ - for (j = 0; j < clock; j++) - { - if (GraphBuffer[(i * clock) + j] == high) - hithigh = 1; - else if (GraphBuffer[(i * clock) + j] == low) - hitlow = 1; - - /* it doesn't count if it's the first part of our read - because it's really just trailing from the last sequence */ - if (first && (hithigh || hitlow)) - hithigh = hitlow = 0; - else - first = 0; - - if (hithigh && hitlow) - break; - } - - /* If we didn't hit both high and low peaks, we had a bit transition */ - if (!hithigh || !hitlow) - bit ^= 1; - - BitStream[bit2idx++] = bit ^ invert; - } - } - - /* standard 1/0 bitstream */ - else - { - - /* Then detect duration between 2 successive transitions */ - for (bitidx = 1; i < GraphTraceLen; i++) - { - 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 { - // 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)"); - - if (warnings > 10) - { - PrintAndLog("Error: too many detection errors, aborting."); - return 0; - } - } - } - } +// trim graph (middle) piece +int CmdMtrim(const char *Cmd) { + int start = 0, stop = 0; + sscanf(Cmd, "%i %i", &start, &stop); - // At this stage, we now have a bitstream of "01" ("1") or "10" ("0"), parse it into final decoded bitstream - // Actually, we overwrite BitStream with the new decoded bitstream, we just need to be careful - // to stop output at the final bitidx2 value, not bitidx - 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++; - warnings++; - PrintAndLog("Unsynchronized, resync..."); - PrintAndLog("(too many of those messages mean the stream is not Manchester encoded)"); - - if (warnings > 10) - { - PrintAndLog("Error: too many decode errors, aborting."); - return 0; - } - } - } - } + if (start > GraphTraceLen || stop > GraphTraceLen || start > stop) return 0; + start++; //leave start position sample - PrintAndLog("Manchester decoded bitstream"); - // Now output the bitstream to the scrollback by line of 16 bits - for (i = 0; i < (bit2idx-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]); + GraphTraceLen = stop - start; + for (int i = 0; i < GraphTraceLen; i++) { + GraphBuffer[i] = GraphBuffer[start+i]; } return 0; } -/* Modulate our data into manchester */ -int CmdManchesterMod(const char *Cmd) -{ - int i, j; - int clock; - int bit, lastbit, wave; - - /* Get our clock */ - clock = GetAskClock(Cmd, 0, 1); - - wave = 0; - lastbit = 1; - for (i = 0; i < (int)(GraphTraceLen / clock); i++) - { - bit = GraphBuffer[i * clock] ^ 1; - - for (j = 0; j < (int)(clock/2); j++) - GraphBuffer[(i * clock) + j] = bit ^ lastbit ^ wave; - for (j = (int)(clock/2); j < clock; j++) - GraphBuffer[(i * clock) + j] = bit ^ lastbit ^ wave ^ 1; - - /* Keep track of how we start our wave and if we changed or not this time */ - wave ^= bit ^ lastbit; - lastbit = bit; - } - - RepaintGraphWindow(); - return 0; -} int CmdNorm(const char *Cmd) { @@ -2622,8 +1406,7 @@ 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 } } @@ -2672,17 +1455,31 @@ int CmdScale(const char *Cmd) return 0; } -int CmdThreshold(const char *Cmd) +int directionalThreshold(const int* in, int *out, size_t len, int8_t up, int8_t down) { - int threshold = atoi(Cmd); + int lastValue = in[0]; + out[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 = 0; i < GraphTraceLen; ++i) { - if (GraphBuffer[i] >= threshold) - GraphBuffer[i] = 1; + for (int i = 1; i < len; ++i) { + // Apply first threshold to samples heading up + if (in[i] >= up && in[i] > lastValue) + { + lastValue = out[i]; // Buffer last value as we overwrite it. + out[i] = 1; + } + // Apply second threshold to samples heading down + else if (in[i] <= down && in[i] < lastValue) + { + lastValue = out[i]; // Buffer last value as we overwrite it. + out[i] = -1; + } else - GraphBuffer[i] = -1; + { + lastValue = out[i]; // Buffer last value as we overwrite it. + out[i] = out[i-1]; + } } - RepaintGraphWindow(); + out[0] = out[1]; // Align with first edited sample. return 0; } @@ -2693,30 +1490,7 @@ int CmdDirectionalThreshold(const char *Cmd) 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. + directionalThreshold(GraphBuffer, GraphBuffer,GraphTraceLen, upThres, downThres); RepaintGraphWindow(); return 0; } @@ -2750,50 +1524,330 @@ int CmdZerocrossings(const char *Cmd) return 0; } +int usage_data_bin2hex(){ + PrintAndLog("Usage: data bin2hex "); + PrintAndLog(" This function will ignore all characters not 1 or 0 (but stop reading on whitespace)"); + return 0; +} + +/** + * @brief Utility for conversion via cmdline. + * @param Cmd + * @return + */ +int Cmdbin2hex(const char *Cmd) +{ + int bg =0, en =0; + if(param_getptr(Cmd, &bg, &en, 0)) + { + return usage_data_bin2hex(); + } + //Number of digits supplied as argument + size_t length = en - bg +1; + size_t bytelen = (length+7) / 8; + uint8_t* arr = (uint8_t *) malloc(bytelen); + memset(arr, 0, bytelen); + BitstreamOut bout = { arr, 0, 0 }; + + for(; bg <= en ;bg++) + { + char c = Cmd[bg]; + if( c == '1') pushBit(&bout, 1); + else if( c == '0') pushBit(&bout, 0); + else PrintAndLog("Ignoring '%c'", c); + } + + if(bout.numbits % 8 != 0) + { + printf("[padded with %d zeroes]\n", 8-(bout.numbits % 8)); + } + + //Uses printf instead of PrintAndLog since the latter + // adds linebreaks to each printout - this way was more convenient since we don't have to + // allocate a string and write to that first... + for(size_t x = 0; x < bytelen ; x++) + { + printf("%02X", arr[x]); + } + printf("\n"); + free(arr); + return 0; +} + +int usage_data_hex2bin() { + PrintAndLog("Usage: data hex2bin "); + PrintAndLog(" This function will ignore all non-hexadecimal characters (but stop reading on whitespace)"); + return 0; + +} + +int Cmdhex2bin(const char *Cmd) +{ + int bg =0, en =0; + if(param_getptr(Cmd, &bg, &en, 0)) + { + return usage_data_hex2bin(); + } + + + while(bg <= en ) + { + char x = Cmd[bg++]; + // capitalize + if (x >= 'a' && x <= 'f') + x -= 32; + // convert to numeric value + if (x >= '0' && x <= '9') + x -= '0'; + else if (x >= 'A' && x <= 'F') + x -= 'A' - 10; + else + continue; + + //Uses printf instead of PrintAndLog since the latter + // adds linebreaks to each printout - this way was more convenient since we don't have to + // allocate a string and write to that first... + + for(int i= 0 ; i < 4 ; ++i) + printf("%d",(x >> (3 - i)) & 1); + } + printf("\n"); + + 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"}, - {"amp", CmdAmp, 1, "Amplify peaks"}, - //{"askdemod", Cmdaskdemod, 1, "<0 or 1> -- Attempt to demodulate simple ASK tags"}, - {"askedgedetect", CmdAskEdgeDetect, 1, "[threshold] Adjust Graph for manual ask demod using length of sample differences to detect the edge of a wave (default = 25)"}, - {"askem410xdemod", CmdAskEM410xDemod, 1, "[clock] [invert<0|1>] [maxErr] -- Demodulate an EM410x tag from GraphBuffer (args optional)"}, - {"askgproxiidemod", CmdG_Prox_II_Demod, 1, "Demodulate a G Prox II tag from GraphBuffer"}, + {"askedgedetect", CmdAskEdgeDetect, 1, "[threshold] Adjust Graph for manual ask demod using the length of sample differences to detect the edge of a wave (use 20-45, def:25)"}, {"autocorr", CmdAutoCorr, 1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"}, - {"biphaserawdecode",CmdBiphaseDecodeRaw,1,"[offset] [invert<0|1>] Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"}, + {"biphaserawdecode",CmdBiphaseDecodeRaw,1, "[offset] [invert<0|1>] [maxErr] -- Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"}, + {"bin2hex", Cmdbin2hex, 1, "bin2hex -- Converts binary to hexadecimal"}, {"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"}, - //{"bitstream", CmdBitstream, 1, "[clock rate] -- Convert waveform into a bitstream"}, {"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)"}, - //{"fskdemod", CmdFSKdemod, 1, "Demodulate graph window as a HID FSK"}, - {"fskawiddemod", CmdFSKdemodAWID, 1, "Demodulate an AWID FSK tag from GraphBuffer"}, - //{"fskfcdetect", CmdFSKfcDetect, 1, "Try to detect the Field Clock of an FSK wave"}, - {"fskhiddemod", CmdFSKdemodHID, 1, "Demodulate a HID FSK tag from GraphBuffer"}, - {"fskiodemod", CmdFSKdemodIO, 1, "Demodulate an IO Prox FSK tag from GraphBuffer"}, - {"fskpyramiddemod", CmdFSKdemodPyramid, 1, "Demodulate a Pyramid FSK tag from GraphBuffer"}, - {"fskparadoxdemod", CmdFSKdemodParadox, 1, "Demodulate a Paradox FSK tag from GraphBuffer"}, + {"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"}, + {"hex2bin", Cmdhex2bin, 1, "hex2bin -- Converts hexadecimal to binary"}, {"hide", CmdHide, 1, "Hide graph window"}, {"hpf", CmdHpf, 1, "Remove DC offset from trace"}, {"load", CmdLoad, 1, " -- Load trace (to graph window"}, {"ltrim", CmdLtrim, 1, " -- Trim samples from left of trace"}, {"rtrim", CmdRtrim, 1, " -- Trim samples from right of trace"}, - //{"mandemod", CmdManchesterDemod, 1, "[i] [clock rate] -- Manchester demodulate binary stream (option 'i' to invert output)"}, - {"manrawdecode", Cmdmandecoderaw, 1, "Manchester decode binary stream in DemodBuffer"}, - {"manmod", CmdManchesterMod, 1, "[clock rate] -- Manchester modulate a binary stream"}, + {"mtrim", CmdMtrim, 1, " -- Trim out samples from the specified start to the specified stop"}, + {"manrawdecode", Cmdmandecoderaw, 1, "[invert] [maxErr] -- Manchester decode binary stream in DemodBuffer"}, {"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] -- print the data in the DemodBuffer - 'x' for hex output"}, - {"pskindalademod", CmdIndalaDecode, 1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"}, + {"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"}, {"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)"}, {"scale", CmdScale, 1, " -- Set cursor display scale"}, - {"setdebugmode", CmdSetDebugMode, 1, "<0|1> -- Turn on or off Debugging Mode for demods"}, + {"setdebugmode", CmdSetDebugMode, 1, "<0|1|2> -- Turn on or off Debugging Level for lf demods"}, {"shiftgraphzero", CmdGraphShiftZero, 1, " -- Shift 0 for Graphed wave + or - shift value"}, - //{"threshold", CmdThreshold, 1, " -- Maximize/minimize every value in the graph window depending on threshold"}, {"dirthreshold", CmdDirectionalThreshold, 1, " -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."}, {"tune", CmdTuneSamples, 0, "Get hw tune samples for graph window"}, {"undec", CmdUndec, 1, "Un-decimate samples by 2"},