]> git.zerfleddert.de Git - proxmark3-svn/blame - client/graph.c
FIX: I think the dumping of data is correct now in tnp3.lua. MD5 string vs bytearra...
[proxmark3-svn] / client / graph.c
CommitLineData
a553f267 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
7fe9b0b7 11#include <stdio.h>
c6be64da 12#include <stdbool.h>
7fe9b0b7 13#include <string.h>
14#include "ui.h"
15#include "graph.h"
16
17int GraphBuffer[MAX_GRAPH_TRACE_LEN];
18int GraphTraceLen;
19
20/* write a bit to the graph */
21void AppendGraph(int redraw, int clock, int bit)
22{
23 int i;
a61b4976 24 int half = (int)(clock/2);
25 int firstbit = bit ^ 1;
26
27 for (i = 0; i < half; ++i)
28 GraphBuffer[GraphTraceLen++] = firstbit;
7fe9b0b7 29
a61b4976 30 for (i = 0; i <= half; ++i)
7fe9b0b7 31 GraphBuffer[GraphTraceLen++] = bit;
32
33 if (redraw)
34 RepaintGraphWindow();
35}
36
37/* clear out our graph window */
38int ClearGraph(int redraw)
39{
40 int gtl = GraphTraceLen;
2ae8a312 41 memset(GraphBuffer, 0x00, GraphTraceLen);
7fe9b0b7 42
2ae8a312 43 GraphTraceLen = 0;
44
7fe9b0b7 45 if (redraw)
46 RepaintGraphWindow();
47
48 return gtl;
49}
50
51/*
52 * Detect clock rate
53 */
54int DetectClock(int peak)
55{
56 int i;
57 int clock = 0xFFFF;
58 int lastpeak = 0;
59
60 /* Detect peak if we don't have one */
61 if (!peak)
62 for (i = 0; i < GraphTraceLen; ++i)
63 if (GraphBuffer[i] > peak)
64 peak = GraphBuffer[i];
65
66 for (i = 1; i < GraphTraceLen; ++i)
67 {
68 /* If this is the beginning of a peak */
69 if (GraphBuffer[i - 1] != GraphBuffer[i] && GraphBuffer[i] == peak)
70 {
71 /* Find lowest difference between peaks */
72 if (lastpeak && i - lastpeak < clock)
73 clock = i - lastpeak;
74 lastpeak = i;
75 }
76 }
a61b4976 77
78 int clockmod = clock%8;
79 if ( clockmod == 0)
80 return clock;
81
82 // When detected clock is 31 or 33 then return 32
83
84 printf("Found clock at %d ", clock);
85 switch( clockmod )
86 {
87 case 7: clock++; break;
88 case 6: clock += 2 ; break;
89 case 1: clock--; break;
90 case 2: clock -= 2; break;
91 }
c15d2bdc 92 if ( clock < 32)
93 clock = 32;
94
a61b4976 95 printf("- adjusted it to %d \n", clock);
96 return clock;
7fe9b0b7 97}
98
99/* Get or auto-detect clock rate */
100int GetClock(const char *str, int peak, int verbose)
101{
102 int clock;
103
104 sscanf(str, "%i", &clock);
105 if (!strcmp(str, ""))
106 clock = 0;
107
108 /* Auto-detect clock */
109 if (!clock)
110 {
111 clock = DetectClock(peak);
112 /* Only print this message if we're not looping something */
113 if (!verbose)
114 PrintAndLog("Auto-detected clock rate: %d", clock);
115 }
116
117 return clock;
118}
c6be64da 119
120
121/* A simple test to see if there is any data inside Graphbuffer.
122*/
123bool HasGraphData(){
124
125 if ( GraphTraceLen <= 0) {
126 PrintAndLog("No data available, try reading something first");
127 return false;
128 }
129 return true;
130}
Impressum, Datenschutz