X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/a553f2674865fa544d04ca7b8194e30c008644ae..d6d20c543547d12eff81c5c3de254cf4b8650868:/client/graph.c

diff --git a/client/graph.c b/client/graph.c
index 541e68f3..e03d1a51 100644
--- a/client/graph.c
+++ b/client/graph.c
@@ -12,6 +12,7 @@
 #include <string.h>
 #include "ui.h"
 #include "graph.h"
+#include "lfdemod.h"
 
 int GraphBuffer[MAX_GRAPH_TRACE_LEN];
 int GraphTraceLen;
@@ -19,77 +20,188 @@ 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 = (int)(clock / 2); i < clock; ++i)
-    GraphBuffer[GraphTraceLen++] = bit;
+	for (i = 0; i < (int)(clock / 2); ++i)
+		GraphBuffer[GraphTraceLen++] = bit ^ 1;
 
-  if (redraw)
-    RepaintGraphWindow();
+	for (i = (int)(clock / 2); i < clock; ++i)
+		GraphBuffer[GraphTraceLen++] = bit;
+
+	if (redraw)
+		RepaintGraphWindow();
 }
 
 /* clear out our graph window */
 int ClearGraph(int redraw)
 {
-  int gtl = GraphTraceLen;
-  GraphTraceLen = 0;
+	int gtl = GraphTraceLen;
+	GraphTraceLen = 0;
 
-  if (redraw)
-    RepaintGraphWindow();
+	if (redraw)
+		RepaintGraphWindow();
 
-  return gtl;
+	return gtl;
 }
 
 /*
  * Detect clock rate
  */
-int DetectClock(int peak)
+ //decommissioned - has difficulty detecting rf/32
+/*
+int DetectClockOld(int peak)
 {
-  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;
+	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];
+
+ // peak=(int)(peak*.75);
+	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;
 }
+*/
+/*
+NOW IN LFDEMOD.C
 
+// by marshmellow
+// not perfect especially with lower clocks or VERY good antennas (heavy wave clipping)
+// maybe somehow adjust peak trimming value based on samples to fix?
+int DetectASKClock(int peak)
+{
+	int i=0;
+	int low=0;
+	int clk[]={16,32,40,50,64,100,128,256};
+	int loopCnt = 256;
+	if (GraphTraceLen<loopCnt) loopCnt = GraphTraceLen;
+	if (!peak){
+		for (i=0;i<loopCnt;++i){
+			if(GraphBuffer[i]>peak){
+				peak = GraphBuffer[i];
+			}
+			if(GraphBuffer[i]<low){
+				low = GraphBuffer[i];
+			}
+		}
+		peak=(int)(peak*.75);
+		low= (int)(low*.75);
+	}
+	int ii;
+	int clkCnt;
+	int tol = 0;
+	int bestErr=1000;
+	int errCnt[]={0,0,0,0,0,0,0,0};
+	for(clkCnt=0; clkCnt<6;++clkCnt){
+		if (clk[clkCnt]==32){
+			tol=1;
+		}else{
+			tol=0;
+		}
+		bestErr=1000;
+		for (ii=0; ii<loopCnt; ++ii){
+			if ((GraphBuffer[ii]>=peak) || (GraphBuffer[ii]<=low)){
+				 errCnt[clkCnt]=0;
+				for (i=0; i<((int)(GraphTraceLen/clk[clkCnt])-1); ++i){
+					if (GraphBuffer[ii+(i*clk[clkCnt])]>=peak || GraphBuffer[ii+(i*clk[clkCnt])]<=low){
+					}else if(GraphBuffer[ii+(i*clk[clkCnt])-tol]>=peak || GraphBuffer[ii+(i*clk[clkCnt])-tol]<=low){
+					}else if(GraphBuffer[ii+(i*clk[clkCnt])+tol]>=peak || GraphBuffer[ii+(i*clk[clkCnt])+tol]<=low){
+					}else{  //error no peak detected
+						errCnt[clkCnt]++;
+					}
+				}
+				if(errCnt[clkCnt]==0) return clk[clkCnt];
+				if(errCnt[clkCnt]<bestErr) bestErr=errCnt[clkCnt];
+			}
+		}
+	}
+	int iii=0;
+	int best=0;
+	for (iii=0; iii<6;++iii){
+		if (errCnt[iii]<errCnt[best]){
+			best = iii;
+		}
+	}
+	// PrintAndLog("DEBUG: clkCnt: %d, ii: %d, i: %d peak: %d, low: %d, errcnt: %d, errCnt64: %d",clkCnt,ii,i,peak,low,errCnt[best],errCnt[4]);
+	return clk[best];
+}
+*/
+void setGraphBuf(uint8_t *buff, size_t size)
+{
+	int i=0;
+	ClearGraph(0);
+	for (; i < size; ++i){
+		GraphBuffer[i]=buff[i]-128;
+	}
+	GraphTraceLen=size;
+	RepaintGraphWindow();
+	return;
+}
+size_t getFromGraphBuf(uint8_t *buff)
+{
+	uint32_t i;
+	for (i=0;i<GraphTraceLen;++i){
+		if (GraphBuffer[i]>127) GraphBuffer[i]=127; //trim
+		if (GraphBuffer[i]<-127) GraphBuffer[i]=-127; //trim
+		buff[i]=(uint8_t)(GraphBuffer[i]+128);
+	}
+	return i;
+}
 /* Get or auto-detect clock rate */
 int GetClock(const char *str, int peak, int verbose)
 {
-  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;
+	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);
+		clock = DetectASKClock(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 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);
+		clock = DetectpskNRZClock(grph,size,0);
+		// Only print this message if we're not looping something
+		if (!verbose){
+			PrintAndLog("Auto-detected clock rate: %d", clock);
+		}
+	}
+	return clock;
 }