X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/e396001c47364fd52177960ef3b9ca3bef7adc3f..62a38cc8835cc7b98a30ee3e670e6eb582ddd8cd:/client/graph.c

diff --git a/client/graph.c b/client/graph.c
index 11dbc4d5..f40f093a 100644
--- a/client/graph.c
+++ b/client/graph.c
@@ -14,20 +14,20 @@
 #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 */
+/* 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 +46,24 @@ 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;
+	static bool GB_Saved = false;
+
+	if (saveOpt==1) { //save
+		memcpy(SavedGB, GraphBuffer, sizeof(GraphBuffer));
+		SavedGBlen = GraphTraceLen;
+		GB_Saved=true;
+	} else if (GB_Saved){ //restore
+		memcpy(GraphBuffer, SavedGB, sizeof(GraphBuffer));
+		GraphTraceLen = SavedGBlen;
+		RepaintGraphWindow();
+	}
+	return;
+}
 
 // DETECT CLOCK NOW IN LFDEMOD.C
 
@@ -126,14 +144,38 @@ int GetAskClock(const char str[], bool printAns, bool verbose)
 			PrintAndLog("Failed to copy from graphbuffer");
 		return -1;
 	}
-	DetectASKClock(grph, size, &clock, 20);
+	bool st = DetectST(grph, &size, &clock);
+	int start = 0;
+	if (st == false) {
+		start = DetectASKClock(grph, size, &clock, 20);
+	}
 	// Only print this message if we're not looping something
-	if (printAns){
-		PrintAndLog("Auto-detected clock rate: %d", clock);
+	if (printAns) {
+		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;
+	}
+	//uint8_t countPSK_FC(uint8_t *BitStream, size_t size)
+
+	carrier = countFC(grph,size,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;
@@ -193,24 +235,10 @@ uint8_t GetFskClock(const char str[], bool printAns, bool verbose)
 		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;
-	}
+	uint8_t fc1=0, fc2=0, rf1=0;
+	uint8_t ans = fskClocks(&fc1, &fc2, &rf1, verbose);
+	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);
 		return rf1;
@@ -221,3 +249,33 @@ uint8_t GetFskClock(const char str[], bool printAns, bool verbose)
 	}
 	return 0;
 }
+uint8_t fskClocks(uint8_t *fc1, uint8_t *fc2, uint8_t *rf1, bool verbose)
+{
+	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;
+
+	*rf1 = detectFSKClk(BitStream, size, *fc1, *fc2);
+	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;
+}