- 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<loopCnt;++i){
- if(GraphBuffer[i]>peak){
- peak = GraphBuffer[i];
- }
- if(GraphBuffer[i]<low){
- low = GraphBuffer[i];
- }
- }
- peak=(int)(peak*.75);
- low= (int)(low*.75);
- }
- int ii;
- int clkCnt;
- int tol = 0;
- int bestErr=1000;
- int errCnt[]={0,0,0,0,0,0,0,0};
- for(clkCnt=0; clkCnt<6;++clkCnt){
- if (clk[clkCnt]==32){
- tol=1;
- }else{
- tol=0;
- }
- bestErr=1000;
- for (ii=0; ii<loopCnt; ++ii){
- if ((GraphBuffer[ii]>=peak) || (GraphBuffer[ii]<=low)){
- 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){
- }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
- errCnt[clkCnt]++;
- }
- }
- if(errCnt[clkCnt]==0) return clk[clkCnt];
- if(errCnt[clkCnt]<bestErr) bestErr=errCnt[clkCnt];
- }
+ if (buff == NULL ) return 0;
+ 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)
+{
+ int clock;
+ sscanf(str, "%i", &clock);
+ if (!strcmp(str, ""))
+ clock = 0;
+
+ // Auto-detect clock
+ if (!clock)
+ {
+ uint8_t grph[MAX_GRAPH_TRACE_LEN]={0};
+ size_t size = getFromGraphBuf(grph);
+ if ( size == 0 ) {
+ PrintAndLog("Failed to copy from graphbuffer");
+ return -1;