cvs.zerfleddert.de Git - proxmark3-svn/blame_incremental

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Commit	Line	Data
	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 <stdbool.h>
	13	#include <string.h>
	14	#include "ui.h"
	15	#include "graph.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	/*
	48	* Detect clock rate
	49	*/
	50	int DetectClock(int peak)
	51	{
	52	int i;
	53	int clock = 0xFFFF;
	54	int lastpeak = 0;
	55
	56	/* Detect peak if we don't have one */
	57	if (!peak)
	58	for (i = 0; i < GraphTraceLen; ++i)
	59	if (GraphBuffer[i] > peak)
	60	peak = GraphBuffer[i];
	61
	62	for (i = 1; i < GraphTraceLen; ++i)
	63	{
	64	/* If this is the beginning of a peak */
	65	if (GraphBuffer[i - 1] != GraphBuffer[i] && GraphBuffer[i] == peak)
	66	{
	67	/* Find lowest difference between peaks */
	68	if (lastpeak && i - lastpeak < clock)
	69	clock = i - lastpeak;
	70	lastpeak = i;
	71	}
	72	}
	73
	74	return clock;
	75	}
	76
	77	/* Get or auto-detect clock rate */
	78	int GetClock(const char *str, int peak, int verbose)
	79	{
	80	int clock;
	81
	82	sscanf(str, "%i", &clock);
	83	if (!strcmp(str, ""))
	84	clock = 0;
	85
	86	/* Auto-detect clock */
	87	if (!clock)
	88	{
	89	clock = DetectClock(peak);
	90	/* Only print this message if we're not looping something */
	91	if (!verbose)
	92	PrintAndLog("Auto-detected clock rate: %d", clock);
	93	}
	94
	95	return clock;
	96	}
	97
	98
	99	/* A simple test to see if there is any data inside Graphbuffer.
	100	*/
	101	bool HasGraphData(){
	102
	103	if ( GraphTraceLen <= 0) {
	104	PrintAndLog("No data available, try reading something first");
	105	return false;
	106	}
	107	return true;
	108	}