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git.zerfleddert.de Git - proxmark3-svn/blob - client/graph.c
009974371b3ed892dbaf2e96c176793b8d69faee
1 //-----------------------------------------------------------------------------
2 // Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
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
7 //-----------------------------------------------------------------------------
9 //-----------------------------------------------------------------------------
18 int GraphBuffer
[MAX_GRAPH_TRACE_LEN
];
21 /* write a bit to the graph */
22 void AppendGraph(int redraw
, int clock
, int bit
)
26 for (i
= 0; i
< (int)(clock
/ 2); ++i
)
27 GraphBuffer
[GraphTraceLen
++] = bit
^ 1;
29 for (i
= (int)(clock
/ 2); i
< clock
; ++i
)
30 GraphBuffer
[GraphTraceLen
++] = bit
;
36 // clear out our graph window
37 int ClearGraph(int redraw
)
39 int gtl
= GraphTraceLen
;
40 memset(GraphBuffer
, 0x00, GraphTraceLen
);
50 // DETECT CLOCK NOW IN LFDEMOD.C
52 void setGraphBuf(uint8_t *buff
, size_t size
)
54 if ( buff
== NULL
) return;
57 if ( size
> MAX_GRAPH_TRACE_LEN
)
58 size
= MAX_GRAPH_TRACE_LEN
;
60 for (; i
< size
; ++i
){
61 GraphBuffer
[i
]=buff
[i
]-128;
67 size_t getFromGraphBuf(uint8_t *buff
)
69 if (buff
== NULL
) return 0;
71 for (i
=0;i
<GraphTraceLen
;++i
){
72 if (GraphBuffer
[i
]>127) GraphBuffer
[i
]=127; //trim
73 if (GraphBuffer
[i
]<-127) GraphBuffer
[i
]=-127; //trim
74 buff
[i
]=(uint8_t)(GraphBuffer
[i
]+128);
80 // Get or auto-detect clock rate
81 int GetClock(const char *str
, int peak
, int verbose
)
84 sscanf(str
, "%i", &clock
);
91 uint8_t grph
[MAX_GRAPH_TRACE_LEN
]={0};
92 size_t size
= getFromGraphBuf(grph
);
94 PrintAndLog("Failed to copy from graphbuffer");
97 clock
= DetectASKClock(grph
,size
,0,20);
98 // Only print this message if we're not looping something
100 PrintAndLog("Auto-detected clock rate: %d", clock
);
106 // A simple test to see if there is any data inside Graphbuffer.
109 if ( GraphTraceLen
<= 0) {
110 PrintAndLog("No data available, try reading something first");
116 // Detect high and lows in Grapbuffer.
117 // Only loops the first 256 values.
118 void DetectHighLowInGraph(int *high
, int *low
, bool addFuzz
) {
120 uint8_t loopMax
= 255;
121 if ( loopMax
> GraphTraceLen
)
122 loopMax
= GraphTraceLen
;
124 for (uint8_t i
= 0; i
< loopMax
; ++i
) {
125 if (GraphBuffer
[i
] > *high
)
126 *high
= GraphBuffer
[i
];
127 else if (GraphBuffer
[i
] < *low
)
128 *low
= GraphBuffer
[i
];
131 //12% fuzz in case highs and lows aren't clipped
133 *high
= (int)(*high
* .88);
134 *low
= (int)(*low
* .88);
138 int GetPskClock(const char *str
, int peak
, int verbose
)
141 sscanf(str
, "%i", &clock
);
142 if (!strcmp(str
, ""))
148 uint8_t grph
[MAX_GRAPH_TRACE_LEN
]={0};
149 size_t size
= getFromGraphBuf(grph
);
151 PrintAndLog("Failed to copy from graphbuffer");
154 clock
= DetectPSKClock(grph
,size
,0);
155 // Only print this message if we're not looping something
157 PrintAndLog("Auto-detected clock rate: %d", clock
);
163 int GetNrzClock(const char *str
, int peak
, int verbose
)
166 sscanf(str
, "%i", &clock
);
167 if (!strcmp(str
, ""))
173 uint8_t grph
[MAX_GRAPH_TRACE_LEN
]={0};
174 size_t size
= getFromGraphBuf(grph
);
176 PrintAndLog("Failed to copy from graphbuffer");
179 clock
= DetectNRZClock(grph
,size
,0);
180 // Only print this message if we're not looping something
182 PrintAndLog("Auto-detected clock rate: %d", clock
);