git.zerfleddert.de Git - proxmark3-svn/blob - client/graph.c

   1 //-----------------------------------------------------------------------------
   2 // Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
   3 //
   4 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
   5 // at your option, any later version. See the LICENSE.txt file for the text of
   6 // the license.
   7 //-----------------------------------------------------------------------------
   8 // Graph utilities
   9 //-----------------------------------------------------------------------------
  10
  11 #include <stdio.h>
  12 #include <string.h>
  13 #include "ui.h"
  14 #include "graph.h"
  15 #include "lfdemod.h"
  16
  17 int GraphBuffer[MAX_GRAPH_TRACE_LEN];
  18 int GraphTraceLen;
  19
  20 /* write a bit to the graph */
  21 void AppendGraph(int redraw, int clock, int bit)
  22 {
  23         int i;
  24
  25         for (i = 0; i < (int)(clock / 2); ++i)
  26                 GraphBuffer[GraphTraceLen++] = bit ^ 1;
  27
  28         for (i = (int)(clock / 2); i < clock; ++i)
  29                 GraphBuffer[GraphTraceLen++] = bit;
  30
  31         if (redraw)
  32                 RepaintGraphWindow();
  33 }
  34
  35 // clear out our graph window
  36 int ClearGraph(int redraw)
  37 {
  38         int gtl = GraphTraceLen;
  39         GraphTraceLen = 0;
  40
  41         if (redraw)
  42                 RepaintGraphWindow();
  43
  44         return gtl;
  45 }
  46
  47 // DETECT CLOCK NOW IN LFDEMOD.C
  48
  49 void setGraphBuf(uint8_t *buff, size_t size)
  50 {
  51         int i=0;
  52         ClearGraph(0);
  53         for (; i < size; ++i){
  54                 GraphBuffer[i]=buff[i]-128;
  55         }
  56         GraphTraceLen=size;
  57         RepaintGraphWindow();
  58         return;
  59 }
  60 size_t getFromGraphBuf(uint8_t *buff)
  61 {
  62         uint32_t i;
  63         for (i=0;i<GraphTraceLen;++i){
  64                 if (GraphBuffer[i]>127) GraphBuffer[i]=127; //trim
  65                 if (GraphBuffer[i]<-127) GraphBuffer[i]=-127; //trim
  66                 buff[i]=(uint8_t)(GraphBuffer[i]+128);
  67         }
  68         return i;
  69 }
  70 // Get or auto-detect clock rate
  71 int GetClock(const char *str, int peak, int verbose)
  72 {
  73         int clock;
  74         sscanf(str, "%i", &clock);
  75         if (!strcmp(str, ""))
  76                 clock = 0;
  77
  78         // Auto-detect clock
  79         if (!clock)
  80         {
  81                 uint8_t grph[MAX_GRAPH_TRACE_LEN]={0};
  82                 size_t size = getFromGraphBuf(grph);
  83                 clock = DetectASKClock(grph,size,0);
  84                 // Only print this message if we're not looping something
  85                 if (!verbose){
  86                         PrintAndLog("Auto-detected clock rate: %d", clock);
  87                 }
  88         }
  89
  90         return clock;
  91 }
  92
  93 int GetNRZpskClock(const char *str, int peak, int verbose)
  94 {
  95         int clock;
  96         sscanf(str, "%i", &clock);
  97         if (!strcmp(str, ""))
  98                 clock = 0;
  99
 100         // Auto-detect clock
 101         if (!clock)
 102         {
 103                 uint8_t grph[MAX_GRAPH_TRACE_LEN]={0};
 104                 size_t size = getFromGraphBuf(grph);
 105                 clock = DetectpskNRZClock(grph,size,0);
 106                 // Only print this message if we're not looping something
 107                 if (!verbose){
 108                         PrintAndLog("Auto-detected clock rate: %d", clock);
 109                 }
 110         }
 111         return clock;
 112 }