X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/07c808038c48a74842290084d1217d6f69cbf18e..b4fb11ba92dd67c249e1f99f4470a10c6db5e00b:/client/graph.c

diff --git a/client/graph.c b/client/graph.c
index 9079e073..f508fe88 100644
--- a/client/graph.c
+++ b/client/graph.c
@@ -9,6 +9,7 @@
 //-----------------------------------------------------------------------------
 
 #include <stdio.h>
+#include <stdbool.h>
 #include <string.h>
 #include "ui.h"
 #include "graph.h"
@@ -20,35 +21,41 @@ int GraphTraceLen;
 /* write a bit to the graph */
 void AppendGraph(int redraw, int clock, int bit)
 {
-	int i;
+  int i;
 
-	for (i = 0; i < (int)(clock / 2); ++i)
-		GraphBuffer[GraphTraceLen++] = bit ^ 1;
+  for (i = 0; i < (int)(clock / 2); ++i)
+    GraphBuffer[GraphTraceLen++] = bit ^ 1;
 
-	for (i = (int)(clock / 2); i < clock; ++i)
-		GraphBuffer[GraphTraceLen++] = bit;
+  for (i = (int)(clock / 2); i < clock; ++i)
+    GraphBuffer[GraphTraceLen++] = bit;
 
-	if (redraw)
-		RepaintGraphWindow();
+  if (redraw)
+    RepaintGraphWindow();
 }
 
 // clear out our graph window
 int ClearGraph(int redraw)
 {
-	int gtl = GraphTraceLen;
-	GraphTraceLen = 0;
+  int gtl = GraphTraceLen;
+  memset(GraphBuffer, 0x00, GraphTraceLen);
 
-	if (redraw)
-		RepaintGraphWindow();
+  GraphTraceLen = 0;
 
-	return gtl;
+  if (redraw)
+    RepaintGraphWindow();
+
+  return gtl;
 }
 
 // DETECT CLOCK NOW IN LFDEMOD.C
 
 void setGraphBuf(uint8_t *buff, size_t size)
 {
-	int i=0;
+	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;
@@ -59,6 +66,7 @@ void setGraphBuf(uint8_t *buff, size_t size)
 }
 size_t getFromGraphBuf(uint8_t *buff)
 {
+	if (buff == NULL ) return 0;
 	uint32_t i;
 	for (i=0;i<GraphTraceLen;++i){
 		if (GraphBuffer[i]>127) GraphBuffer[i]=127; //trim
@@ -67,6 +75,8 @@ size_t getFromGraphBuf(uint8_t *buff)
 	}
 	return i;
 }
+
+
 // Get or auto-detect clock rate
 int GetClock(const char *str, int peak, int verbose)
 {
@@ -80,17 +90,77 @@ int GetClock(const char *str, int peak, int verbose)
 	{
 		uint8_t grph[MAX_GRAPH_TRACE_LEN]={0};
 		size_t size = getFromGraphBuf(grph);
-		clock = DetectASKClock(grph,size,0);
+		if ( size == 0 ) {
+			PrintAndLog("Failed to copy from graphbuffer");
+			return -1;
+		}
+		DetectASKClock(grph,size,&clock,20);
 		// Only print this message if we're not looping something
 		if (!verbose){
 			PrintAndLog("Auto-detected clock rate: %d", clock);
 		}
 	}
+	return clock;
+}
+
+// A simple test to see if there is any data inside Graphbuffer. 
+bool HasGraphData(){
 
+	if ( GraphTraceLen <= 0) {
+		PrintAndLog("No data available, try reading something first");
+		return false;
+	}
+	return true;	
+}
+
+// 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);
+	}
+}
+
+int GetPskClock(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 = DetectPSKClock(grph,size,0);
+		// Only print this message if we're not looping something
+		if (!verbose){
+			PrintAndLog("Auto-detected clock rate: %d", clock);
+		}
+	}
 	return clock;
 }
 
-int GetNRZpskClock(const char *str, int peak, int verbose)
+int GetNrzClock(const char *str, int peak, int verbose)
 {
 	int clock;
 	sscanf(str, "%i", &clock);
@@ -102,7 +172,11 @@ int GetNRZpskClock(const char *str, int peak, int verbose)
 	{
 		uint8_t grph[MAX_GRAPH_TRACE_LEN]={0};
 		size_t size = getFromGraphBuf(grph);
-		clock = DetectpskNRZClock(grph,size,0);
+		if ( size == 0 ) {
+			PrintAndLog("Failed to copy from graphbuffer");
+			return -1;
+		}
+		clock = DetectNRZClock(grph,size,0);
 		// Only print this message if we're not looping something
 		if (!verbose){
 			PrintAndLog("Auto-detected clock rate: %d", clock);