proper initialized values

[proxmark3-svn] / client / cmddata.c

diff --git a/client/cmddata.c b/client/cmddata.c
index f15d7ad06265de0304863089f811b6dbaf45e862..664ef85048e36730450d8f3e28115502862c2493 100644 (file)
--- a/client/cmddata.c
+++ b/client/cmddata.c
@@ -28,8 +28,6 @@
 uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN];
 uint8_t g_debugMode=0;
 size_t DemodBufferLen=0;
-//size_t g_demodStartIdx=0;
-//uint8_t g_demodClock=0;
 
 static int CmdHelp(const char *Cmd);
 
@@ -40,8 +38,8 @@ 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++){
@@ -65,11 +63,12 @@ bool getDemodBuf(uint8_t *buff, size_t *size) {
 // option '1' to save DemodBuffer any other to restore
 void save_restoreDB(uint8_t saveOpt)
 {
-       static uint8_t SavedDB[MAX_GRAPH_TRACE_LEN];
+       static uint8_t SavedDB[MAX_DEMOD_BUF_LEN];
        static size_t SavedDBlen;
        static bool DB_Saved = false;
 
        if (saveOpt==1) { //save
+
                memcpy(SavedDB, DemodBuffer, sizeof(DemodBuffer));
                SavedDBlen = DemodBufferLen;
                DB_Saved=true;
@@ -222,7 +221,7 @@ int ASKDemod_ext(const char *Cmd, bool verbose, bool emSearch, uint8_t askType,
        }
        bool st = false;
        size_t ststart = 0, stend = 0;
-       if (*stCheck) st = DetectST_ext(BitStream, &BitLen, &foundclk, &ststart, &stend);
+       if (*stCheck) st = DetectST(BitStream, &BitLen, &foundclk, &ststart, &stend);
        *stCheck = st;
        if (st) {
                clk = (clk == 0) ? foundclk : clk;
@@ -235,7 +234,8 @@ int ASKDemod_ext(const char *Cmd, bool verbose, bool emSearch, uint8_t askType,
                //}
                //RepaintGraphWindow();
        }
-       int errCnt = askdemod(BitStream, &BitLen, &clk, &invert, maxErr, askamp, askType);
+       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;
@@ -248,6 +248,8 @@ int ASKDemod_ext(const char *Cmd, bool verbose, bool emSearch, uint8_t askType,
 
        //output
        setDemodBuf(BitStream,BitLen,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);
@@ -322,7 +324,7 @@ int Cmdmandecoderaw(const char *Cmd)
                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 (;i<DemodBufferLen;++i){
                if (DemodBuffer[i]>high) high=DemodBuffer[i];
@@ -388,7 +390,7 @@ int CmdBiphaseDecodeRaw(const char *Cmd)
                PrintAndLog("DemodBuffer Empty - run 'data rawdemod ar' first");
                return 0;
        }
-       uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
+       uint8_t BitStream[MAX_DEMOD_BUF_LEN]={0};
        size = sizeof(BitStream);
        if ( !getDemodBuf(BitStream, &size) ) return 0;
        errCnt=BiphaseRawDecode(BitStream, &size, offset, invert);
@@ -419,7 +421,7 @@ int ASKbiphaseDemod(const char *Cmd, bool verbose)
        int offset=0, clk=0, invert=0, maxErr=0;
        sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr);
 
-       uint8_t BitStream[MAX_DEMOD_BUF_LEN];     
+       uint8_t BitStream[MAX_GRAPH_TRACE_LEN];   
        size_t size = getFromGraphBuf(BitStream);         
        //invert here inverts the ask raw demoded bits which has no effect on the demod, but we need the pointer
        int errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);  
@@ -786,12 +788,15 @@ int FSKrawDemod(const char *Cmd, bool verbose)
        }
        //get bit clock length
        if (!rfLen) {
-               rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow);
+               int firstClockEdge = 0; //todo - align grid on graph with this...
+               rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow, &firstClockEdge);
                if (!rfLen) rfLen = 50;
        }
-       int size = fskdemod(BitStream, BitLen, rfLen, invert, fchigh, fclow);
+       int startIdx = 0;
+       int size = fskdemod_ext(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 (verbose || g_debugMode) {
@@ -853,7 +858,8 @@ int PSKDemod(const char *Cmd, bool verbose)
        size_t BitLen = getFromGraphBuf(BitStream);
        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 || verbose) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
                return 0;
@@ -870,6 +876,8 @@ int PSKDemod(const char *Cmd, bool verbose)
        }
        //prime demod buffer for output
        setDemodBuf(BitStream,BitLen,0);
+       setClockGrid(clk, startIdx);
+
        return 1;
 }
 
@@ -908,6 +916,8 @@ int NRZrawDemod(const char *Cmd, bool verbose)
        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 7 in bit stream): %d",errCnt);
        if (verbose || g_debugMode) {
@@ -1046,6 +1056,26 @@ int CmdRawDemod(const char *Cmd)
        return ans;
 }
 
+void setClockGrid(int clk, int offset) {
+       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);
@@ -1160,7 +1190,7 @@ int getSamples(int n, bool silent)
        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;
        }
@@ -1560,7 +1590,6 @@ static command_t CommandTable[] =
        {"buffclear",       CmdBuffClear,       1, "Clear sample buffer and graph window"},
        {"dec",             CmdDec,             1, "Decimate samples"},
        {"detectclock",     CmdDetectClockRate, 1, "[modulation] Detect clock rate of wave in GraphBuffer (options: 'a','f','n','p' for ask, fsk, nrz, psk respectively)"},
-       //{"fskfcdetect",   CmdFSKfcDetect,     1, "Try to detect the Field Clock of an FSK wave"},
        {"getbitstream",    CmdGetBitStream,    1, "Convert GraphBuffer's >=1 values to 1 and <1 to 0"},
        {"grid",            CmdGrid,            1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"},
        {"hexsamples",      CmdHexsamples,      0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"},