X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/2595390c6d97d373253f6397a167875f37a90454..faa35ae02952b47fc04fb018b0c9f46b058243fc:/client/graph.c?ds=inline diff --git a/client/graph.c b/client/graph.c index 94d6054f..3ea47d2d 100644 --- a/client/graph.c +++ b/client/graph.c @@ -14,20 +14,23 @@ #include "ui.h" #include "graph.h" #include "lfdemod.h" +#include "cmddata.h" //for g_debugmode int GraphBuffer[MAX_GRAPH_TRACE_LEN]; int GraphTraceLen; -/* write a bit to the graph */ +int s_Buff[MAX_GRAPH_TRACE_LEN]; + +/* write a manchester bit to the graph */ void AppendGraph(int redraw, int clock, int bit) { int i; - + //set first half the clock bit (all 1's or 0's for a 0 or 1 bit) for (i = 0; i < (int)(clock / 2); ++i) - GraphBuffer[GraphTraceLen++] = bit ^ 1; - + GraphBuffer[GraphTraceLen++] = bit ; + //set second half of the clock bit (all 0's or 1's for a 0 or 1 bit) for (i = (int)(clock / 2); i < clock; ++i) - GraphBuffer[GraphTraceLen++] = bit; + GraphBuffer[GraphTraceLen++] = bit ^ 1; if (redraw) RepaintGraphWindow(); @@ -46,6 +49,27 @@ int ClearGraph(int redraw) return gtl; } +// option '1' to save GraphBuffer any other to restore +void save_restoreGB(uint8_t saveOpt) +{ + static int SavedGB[MAX_GRAPH_TRACE_LEN]; + static int SavedGBlen=0; + static bool GB_Saved = false; + static int SavedGridOffsetAdj=0; + + if (saveOpt == GRAPH_SAVE) { //save + memcpy(SavedGB, GraphBuffer, sizeof(GraphBuffer)); + SavedGBlen = GraphTraceLen; + GB_Saved=true; + SavedGridOffsetAdj = GridOffset; + } else if (GB_Saved) { //restore + memcpy(GraphBuffer, SavedGB, sizeof(GraphBuffer)); + GraphTraceLen = SavedGBlen; + GridOffset = SavedGridOffsetAdj; + RepaintGraphWindow(); + } + return; +} // DETECT CLOCK NOW IN LFDEMOD.C @@ -56,50 +80,24 @@ void setGraphBuf(uint8_t *buff, size_t size) uint16_t i = 0; if ( size > MAX_GRAPH_TRACE_LEN ) size = MAX_GRAPH_TRACE_LEN; - ClearGraph(0); - for (; i < size; ++i){ + ClearGraph(0); + for (; i < size; ++i){ GraphBuffer[i]=buff[i]-128; - } - GraphTraceLen=size; - RepaintGraphWindow(); - return; + } + GraphTraceLen=size; + RepaintGraphWindow(); + return; } size_t getFromGraphBuf(uint8_t *buff) { - if ( buff == NULL ) return 0; - - uint32_t i; - for (i=0;i127) GraphBuffer[i]=127; //trim - if (GraphBuffer[i]<-127) GraphBuffer[i]=-127; //trim - buff[i]=(uint8_t)(GraphBuffer[i]+128); - } - return i; -} -// Get or auto-detect clock rate -int GetClock(const char *str, int peak, int verbose) -{ - int clock; - sscanf(str, "%i", &clock); - if (!strcmp(str, "")) - clock = 0; - - // Auto-detect clock - if (!clock) - { - uint8_t grph[MAX_GRAPH_TRACE_LEN]={0}; - size_t size = getFromGraphBuf(grph); - if ( size == 0 ) { - PrintAndLog("Failed to copy from graphbuffer"); - return -1; - } - clock = DetectASKClock(grph,size,0); - // Only print this message if we're not looping something - if (!verbose){ - PrintAndLog("Auto-detected clock rate: %d", clock); - } + if (buff == NULL ) return 0; + uint32_t i; + for (i=0;i127) GraphBuffer[i]=127; //trim + if (GraphBuffer[i]<-127) GraphBuffer[i]=-127; //trim + buff[i]=(uint8_t)(GraphBuffer[i]+128); } - return clock; + return i; } // A simple test to see if there is any data inside Graphbuffer. @@ -134,27 +132,167 @@ void DetectHighLowInGraph(int *high, int *low, bool addFuzz) { } } -int GetNRZpskClock(const char *str, int peak, int verbose) +// Get or auto-detect ask clock rate +int GetAskClock(const char str[], bool printAns, bool verbose) +{ + int clock; + sscanf(str, "%i", &clock); + if (!strcmp(str, "")) + clock = 0; + + if (clock != 0) + return clock; + // Auto-detect clock + uint8_t grph[MAX_GRAPH_TRACE_LEN]={0}; + size_t size = getFromGraphBuf(grph); + if (size == 0) { + if (verbose) + PrintAndLog("Failed to copy from graphbuffer"); + return -1; + } + //, size_t *ststart, size_t *stend + size_t ststart = 0, stend = 0; + bool st = DetectST(grph, &size, &clock, &ststart, &stend); + int start = stend; + if (st == false) { + start = DetectASKClock(grph, size, &clock, 20); + } + setClockGrid(clock, start); + // Only print this message if we're not looping something + if (printAns || g_debugMode) { + PrintAndLog("Auto-detected clock rate: %d, Best Starting Position: %d", clock, start); + } + return clock; +} + +uint8_t GetPskCarrier(const char str[], bool printAns, bool verbose) +{ + uint8_t carrier=0; + uint8_t grph[MAX_GRAPH_TRACE_LEN]={0}; + size_t size = getFromGraphBuf(grph); + if ( size == 0 ) { + if (verbose) + PrintAndLog("Failed to copy from graphbuffer"); + return 0; + } + uint16_t fc = countFC(grph,size,0); + carrier = fc & 0xFF; + if (carrier != 2 && carrier != 4 && carrier != 8) return 0; + if ((fc>>8) == 10 && carrier == 8) return 0; + // Only print this message if we're not looping something + if (printAns) { + PrintAndLog("Auto-detected PSK carrier rate: %d", carrier); + } + return carrier; +} + +int GetPskClock(const char str[], bool printAns, bool verbose) +{ + int clock; + sscanf(str, "%i", &clock); + if (!strcmp(str, "")) + clock = 0; + + if (clock!=0) + return clock; + // Auto-detect clock + uint8_t grph[MAX_GRAPH_TRACE_LEN]={0}; + size_t size = getFromGraphBuf(grph); + if ( size == 0 ) { + if (verbose) + PrintAndLog("Failed to copy from graphbuffer"); + return -1; + } + size_t firstPhaseShiftLoc = 0; + uint8_t curPhase = 0, fc = 0; + clock = DetectPSKClock(grph, size, 0, &firstPhaseShiftLoc, &curPhase, &fc); + setClockGrid(clock, firstPhaseShiftLoc); + // Only print this message if we're not looping something + if (printAns){ + PrintAndLog("Auto-detected clock rate: %d", clock); + } + return clock; +} + +uint8_t GetNrzClock(const char str[], bool printAns, bool verbose) { int clock; sscanf(str, "%i", &clock); if (!strcmp(str, "")) clock = 0; + if (clock!=0) + return clock; // Auto-detect clock - if (!clock) - { - uint8_t grph[MAX_GRAPH_TRACE_LEN]={0}; - size_t size = getFromGraphBuf(grph); - if ( size == 0 ) { + uint8_t grph[MAX_GRAPH_TRACE_LEN]={0}; + size_t size = getFromGraphBuf(grph); + if ( size == 0 ) { + if (verbose) PrintAndLog("Failed to copy from graphbuffer"); - return -1; - } - clock = DetectpskNRZClock(grph,size,0); - // Only print this message if we're not looping something - if (!verbose){ - PrintAndLog("Auto-detected clock rate: %d", clock); - } + return -1; + } + size_t clkStartIdx = 0; + clock = DetectNRZClock(grph, size, 0, &clkStartIdx); + setClockGrid(clock, clkStartIdx); + // Only print this message if we're not looping something + if (printAns){ + PrintAndLog("Auto-detected clock rate: %d", clock); } return clock; -} \ No newline at end of file +} +//by marshmellow +//attempt to detect the field clock and bit clock for FSK +uint8_t GetFskClock(const char str[], bool printAns, bool verbose) +{ + int clock; + sscanf(str, "%i", &clock); + if (!strcmp(str, "")) + clock = 0; + if (clock != 0) return (uint8_t)clock; + + + uint8_t fc1=0, fc2=0, rf1=0; + int firstClockEdge = 0; + uint8_t ans = fskClocks(&fc1, &fc2, &rf1, verbose, &firstClockEdge); + if (ans == 0) return 0; + if ((fc1==10 && fc2==8) || (fc1==8 && fc2==5)){ + if (printAns) PrintAndLog("Detected Field Clocks: FC/%d, FC/%d - Bit Clock: RF/%d", fc1, fc2, rf1); + setClockGrid(rf1, firstClockEdge); + return rf1; + } + if (verbose){ + PrintAndLog("DEBUG: unknown fsk field clock detected"); + PrintAndLog("Detected Field Clocks: FC/%d, FC/%d - Bit Clock: RF/%d", fc1, fc2, rf1); + } + return 0; +} +uint8_t fskClocks(uint8_t *fc1, uint8_t *fc2, uint8_t *rf1, bool verbose, int *firstClockEdge) +{ + uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; + size_t size = getFromGraphBuf(BitStream); + if (size==0) return 0; + uint16_t ans = countFC(BitStream, size, 1); + if (ans==0) { + if (verbose || g_debugMode) PrintAndLog("DEBUG: No data found"); + return 0; + } + *fc1 = (ans >> 8) & 0xFF; + *fc2 = ans & 0xFF; + //int firstClockEdge = 0; + *rf1 = detectFSKClk(BitStream, size, *fc1, *fc2, firstClockEdge); + if (*rf1==0) { + if (verbose || g_debugMode) PrintAndLog("DEBUG: Clock detect error"); + return 0; + } + return 1; +} +bool graphJustNoise(int *BitStream, int size) +{ + static const uint8_t THRESHOLD = 15; //might not be high enough for noisy environments + //test samples are not just noise + bool justNoise1 = 1; + for(int idx=0; idx < size && justNoise1 ;idx++){ + justNoise1 = BitStream[idx] < THRESHOLD; + } + return justNoise1; +}