]> git.zerfleddert.de Git - proxmark3-svn/blobdiff - client/graph.c
Add flasher from SVN r623 for HID bootprom and current Mac OS X kext
[proxmark3-svn] / client / graph.c
index e03d1a51ee23c0af6bd041a78a68f3f2aef9ba63..95050f558c169078e96a4d7aaad1a91e7419869b 100644 (file)
@@ -9,6 +9,7 @@
 //-----------------------------------------------------------------------------
 
 #include <stdio.h>
+#include <stdbool.h>
 #include <string.h>
 #include "ui.h"
 #include "graph.h"
@@ -20,149 +21,64 @@ 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 */
+// 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 rate
- */
- //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];
-
- // 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;
-               }
-       }
+// DETECT CLOCK NOW IN LFDEMOD.C
 
-       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){
+       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;
-       }
-       GraphTraceLen=size;
-       RepaintGraphWindow();
-       return;
+  }
+  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;
+       if ( buff == NULL ) return 0;
+       
+  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 */
+
+
+// Get or auto-detect clock rate
 int GetClock(const char *str, int peak, int verbose)
 {
        int clock;
@@ -170,21 +86,56 @@ int GetClock(const char *str, int peak, int verbose)
        if (!strcmp(str, ""))
                clock = 0;
 
-       /* Auto-detect clock */
+       // 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 = DetectASKClock(grph,size,0);
-               /* Only print this message if we're not looping something */
+               // 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 GetNRZpskClock(const char *str, int peak, int verbose)
 {
        int clock;
@@ -197,6 +148,10 @@ int GetNRZpskClock(const char *str, int peak, int verbose)
        {
                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 = DetectpskNRZClock(grph,size,0);
                // Only print this message if we're not looping something
                if (!verbose){
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