#include <string.h>
#include "ui.h"
#include "graph.h"
+#include "lfdemod.h"
int GraphBuffer[MAX_GRAPH_TRACE_LEN];
int GraphTraceLen;
/*
* Detect clock rate
*/
- //decommissioned - has difficulty detecting rf/32 and only works if data is manchester encoded
+ //decommissioned - has difficulty detecting rf/32
/*
-int DetectClock2(int peak)
+int DetectClockOld(int peak)
{
int i;
int clock = 0xFFFF;
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 DetectClock(int peak)
+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<GraphTraceLen;++i){
+ for (i=0;i<loopCnt;++i){
if(GraphBuffer[i]>peak){
peak = GraphBuffer[i];
}
peak=(int)(peak*.75);
low= (int)(low*.75);
}
- //int numbits;
int ii;
- int loopCnt = 256;
- if (GraphTraceLen<loopCnt) loopCnt = GraphTraceLen;
int clkCnt;
int tol = 0;
int bestErr=1000;
int errCnt[]={0,0,0,0,0,0,0,0};
- // int good;
for(clkCnt=0; clkCnt<6;++clkCnt){
if (clk[clkCnt]==32){
tol=1;
bestErr=1000;
for (ii=0; ii<loopCnt; ++ii){
if ((GraphBuffer[ii]>=peak) || (GraphBuffer[ii]<=low)){
- //numbits=0;
- //good=1;
- errCnt[clkCnt]=0;
+ 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){
- //numbits++;
}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
- //numbits=0;
- //good=0;
errCnt[clkCnt]++;
- //break;
}
}
if(errCnt[clkCnt]==0) return clk[clkCnt];
if(errCnt[clkCnt]<bestErr) bestErr=errCnt[clkCnt];
}
}
- errCnt[clkCnt]=bestErr;
}
int iii=0;
int best=0;
best = iii;
}
}
- PrintAndLog("clkCnt: %d, ii: %d, i: %d peak: %d, low: %d, errcnt: %d, errCnt64: %d",clkCnt,ii,i,peak,low,errCnt[best],errCnt[4]);
+ // 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,int size)
+{
+ int i=0;
+ ClearGraph(0);
+ for (; i < size; ++i){
+ GraphBuffer[i]=buff[i];
+ }
+ GraphTraceLen=size;
+ RepaintGraphWindow();
+ return;
+}
+int 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;
+}
/* Get or auto-detect clock rate */
int GetClock(const char *str, int peak, int verbose)
{
/* Auto-detect clock */
if (!clock)
{
- clock = DetectClock(peak);
+ uint8_t grph[MAX_GRAPH_TRACE_LEN]={0};
+ int size = getFromGraphBuf(grph);
+ clock = DetectASKClock(grph,size,0);
//clock2 = DetectClock2(peak);
/* Only print this message if we're not looping something */
if (!verbose){