X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/f1004b345ea236d8ebb130672b066c4e95e2e298..9fe4507c03c26715b532b4ceb1f46e8198ecd4c9:/client/cmddata.c?ds=sidebyside

diff --git a/client/cmddata.c b/client/cmddata.c
index 8f2aea5a..a59236e6 100644
--- a/client/cmddata.c
+++ b/client/cmddata.c
@@ -28,8 +28,8 @@
 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;
+int g_DemodStartIdx=0;
+int g_DemodClock=0;
 
 static int CmdHelp(const char *Cmd);
 
@@ -40,8 +40,8 @@ void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx)
 	if (buff == NULL) 
 		return;
 
-	if ( size + startIdx >= 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++){
@@ -223,7 +223,7 @@ 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;
@@ -236,7 +236,8 @@ 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;
@@ -246,9 +247,10 @@ int ASKDemod_ext(const char *Cmd, bool verbose, bool emSearch, uint8_t askType,
 		return 0;
 	}
 	if (verbose || g_debugMode) PrintAndLog("\nUsing Clock:%d, Invert:%d, Bits Found:%d",clk,invert,BitLen);
-
 	//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);
@@ -294,11 +296,11 @@ int Cmdaskmandemod(const char *Cmd)
 	}
 	bool st = true;
 	if (Cmd[0]=='s') 
-		return ASKDemod_ext(Cmd++, true, true, 1, &st);
+		return ASKDemod_ext(Cmd++, true, false, 1, &st);
 	else if (Cmd[1] == 's')
-		return ASKDemod_ext(Cmd+=2, true, true, 1, &st);
+		return ASKDemod_ext(Cmd+=2, true, false, 1, &st);
 	else
-		return ASKDemod(Cmd, true, true, 1);
+		return ASKDemod(Cmd, true, false, 1);
 }
 
 //by marshmellow
@@ -392,7 +394,7 @@ int CmdBiphaseDecodeRaw(const char *Cmd)
 	uint8_t BitStream[MAX_DEMOD_BUF_LEN]={0};
 	size = sizeof(BitStream);
 	if ( !getDemodBuf(BitStream, &size) ) return 0;
-	errCnt=BiphaseRawDecode(BitStream, &size, offset, invert);
+	errCnt=BiphaseRawDecode(BitStream, &size, &offset, invert);
 	if (errCnt<0){
 		PrintAndLog("Error during decode:%d", errCnt);
 		return 0;
@@ -405,10 +407,12 @@ int CmdBiphaseDecodeRaw(const char *Cmd)
 	if (errCnt>0){
 		PrintAndLog("# Errors found during Demod (shown as 7 in bit stream): %d",errCnt);
 	}
+
 	PrintAndLog("Biphase Decoded using offset: %d - # invert:%d - data:",offset,invert);
 	PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
 	
 	if (offset) setDemodBuf(DemodBuffer,DemodBufferLen-offset, offset);  //remove first bit from raw demod
+	setClockGrid(g_DemodClock, g_DemodStartIdx + g_DemodClock*offset/2);
 	return 1;
 }
 
@@ -421,26 +425,28 @@ int ASKbiphaseDemod(const char *Cmd, bool verbose)
 	sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr);
 
 	uint8_t BitStream[MAX_GRAPH_TRACE_LEN];	  
-	size_t size = getFromGraphBuf(BitStream);	  
+	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(BitStream, &size, &clk, &invert, maxErr, 0, 0);  
+	int errCnt = askdemod_ext(BitStream, &size, &clk, &invert, maxErr, 0, 0, &startIdx);  
 	if ( errCnt < 0 || errCnt > maxErr ) {   
 		if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);  
 			return 0;  
-	} 
+	}
 
 	//attempt to Biphase decode BitStream
-	errCnt = BiphaseRawDecode(BitStream, &size, offset, invert);
+	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 - clock: %d - # errors:%d - data:",offset,clk,errCnt);
 		printDemodBuff();
@@ -787,13 +793,16 @@ 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) {
 			PrintAndLog("\nUsing Clock:%u, invert:%u, fchigh:%u, fclow:%u", (unsigned int)rfLen, (unsigned int)invert, (unsigned int)fchigh, (unsigned int)fclow);
@@ -854,7 +863,8 @@ 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;
@@ -871,6 +881,8 @@ int PSKDemod(const char *Cmd, bool verbose)
 	}
 	//prime demod buffer for output
 	setDemodBuf(BitStream,BitLen,0);
+	setClockGrid(clk, startIdx);
+
 	return 1;
 }
 
@@ -909,6 +921,8 @@ 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) {
@@ -1047,6 +1061,29 @@ int CmdRawDemod(const char *Cmd)
 	return ans;
 }
 
+void setClockGrid(int clk, int offset) {
+	g_DemodStartIdx = offset;
+	g_DemodClock = clk;
+	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);
@@ -1161,7 +1198,7 @@ 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;
 	}
@@ -1184,6 +1221,7 @@ int getSamples(int n, bool silent)
 		GraphTraceLen = n;
 	}
 
+	setClockGrid(0,0);
 	RepaintGraphWindow();
 	return 0;
 }
@@ -1287,6 +1325,7 @@ int CmdLoad(const char *Cmd)
 	}
 	fclose(f);
 	PrintAndLog("loaded %d samples", GraphTraceLen);
+	setClockGrid(0,0);
 	RepaintGraphWindow();
 	return 0;
 }
@@ -1561,7 +1600,6 @@ 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"},