X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/2ae8a312e058f71d0f02be4f2f9cc6f284ebbf34..bd8baee9df2d7b00ba83c5aeb0ba0451375f93bc:/client/graph.c diff --git a/client/graph.c b/client/graph.c index 98dc8043..11dbc4d5 100644 --- a/client/graph.c +++ b/client/graph.c @@ -13,6 +13,7 @@ #include #include "ui.h" #include "graph.h" +#include "lfdemod.h" int GraphBuffer[MAX_GRAPH_TRACE_LEN]; int GraphTraceLen; @@ -24,7 +25,7 @@ void AppendGraph(int redraw, int clock, int bit) for (i = 0; i < (int)(clock / 2); ++i) GraphBuffer[GraphTraceLen++] = bit ^ 1; - + for (i = (int)(clock / 2); i < clock; ++i) GraphBuffer[GraphTraceLen++] = bit; @@ -32,74 +33,50 @@ void AppendGraph(int redraw, int clock, int bit) RepaintGraphWindow(); } -/* clear out our graph window */ +// clear out our graph window int ClearGraph(int redraw) { int gtl = GraphTraceLen; memset(GraphBuffer, 0x00, GraphTraceLen); GraphTraceLen = 0; - + if (redraw) RepaintGraphWindow(); return gtl; } -/* - * Detect clock rate - */ -int DetectClock(int peak) +// DETECT CLOCK NOW IN LFDEMOD.C + +void setGraphBuf(uint8_t *buff, size_t size) { - int i; - int clock = 0xFFFF; - int lastpeak = 0; - - /* Detect peak if we don't have one */ - if (!peak) - for (i = 0; i < GraphTraceLen; ++i) - if (GraphBuffer[i] > peak) - peak = GraphBuffer[i]; - - for (i = 1; i < GraphTraceLen; ++i) - { - /* If this is the beginning of a peak */ - if (GraphBuffer[i - 1] != GraphBuffer[i] && GraphBuffer[i] == peak) - { - /* Find lowest difference between peaks */ - if (lastpeak && i - lastpeak < clock) - clock = i - lastpeak; - lastpeak = i; - } - } - - return clock; + if ( buff == NULL ) return; + + uint16_t i = 0; + if ( size > MAX_GRAPH_TRACE_LEN ) + size = MAX_GRAPH_TRACE_LEN; + ClearGraph(0); + for (; i < size; ++i){ + GraphBuffer[i]=buff[i]-128; + } + GraphTraceLen=size; + RepaintGraphWindow(); + return; } - -/* Get or auto-detect clock rate */ -int GetClock(const char *str, int peak, int verbose) +size_t getFromGraphBuf(uint8_t *buff) { - int clock; - - sscanf(str, "%i", &clock); - if (!strcmp(str, "")) - clock = 0; - - /* Auto-detect clock */ - if (!clock) - { - clock = DetectClock(peak); - /* Only print this message if we're not looping something */ - if (!verbose) - PrintAndLog("Auto-detected clock rate: %d", clock); - } - - return 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 i; } - -/* A simple test to see if there is any data inside Graphbuffer. -*/ +// A simple test to see if there is any data inside Graphbuffer. bool HasGraphData(){ if ( GraphTraceLen <= 0) { @@ -107,4 +84,140 @@ bool HasGraphData(){ return false; } return true; -} \ No newline at end of file +} + +// Detect high and lows in Grapbuffer. +// Only loops the first 256 values. +void DetectHighLowInGraph(int *high, int *low, bool addFuzz) { + + uint8_t loopMax = 255; + if ( loopMax > GraphTraceLen) + loopMax = GraphTraceLen; + + for (uint8_t i = 0; i < loopMax; ++i) { + if (GraphBuffer[i] > *high) + *high = GraphBuffer[i]; + else if (GraphBuffer[i] < *low) + *low = GraphBuffer[i]; + } + + //12% fuzz in case highs and lows aren't clipped + if (addFuzz) { + *high = (int)(*high * .88); + *low = (int)(*low * .88); + } +} + +// 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; + } + DetectASKClock(grph, size, &clock, 20); + // Only print this message if we're not looping something + if (printAns){ + PrintAndLog("Auto-detected clock rate: %d", clock); + } + return clock; +} + +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; + } + clock = DetectPSKClock(grph,size,0); + // 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 + 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 = DetectNRZClock(grph, size, 0); + // Only print this message if we're not looping something + if (printAns){ + PrintAndLog("Auto-detected clock rate: %d", clock); + } + return clock; +} +//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 BitStream[MAX_GRAPH_TRACE_LEN]={0}; + size_t size = getFromGraphBuf(BitStream); + if (size==0) return 0; + uint8_t dummy = 0; + uint16_t ans = countFC(BitStream, size, &dummy); + if (ans==0) { + if (verbose) PrintAndLog("DEBUG: No data found"); + return 0; + } + uint8_t fc1, fc2; + fc1 = (ans >> 8) & 0xFF; + fc2 = ans & 0xFF; + + uint8_t rf1 = detectFSKClk(BitStream, size, fc1, fc2); + if (rf1==0) { + if (verbose) PrintAndLog("DEBUG: Clock detect error"); + 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); + 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; +}