+int cleanAskRawDemod(uint8_t *BinStream, size_t *size, int clk, int invert, int high, int low)
+{
+ size_t bitCnt=0, smplCnt=0, errCnt=0;
+ uint8_t waveHigh = 0;
+ //PrintAndLog("clk: %d", clk);
+ for (size_t i=0; i < *size; i++){
+ if (BinStream[i] >= high && waveHigh){
+ smplCnt++;
+ } else if (BinStream[i] <= low && !waveHigh){
+ smplCnt++;
+ } else { //not high or low or a transition
+ if (smplCnt > clk-(clk/4)) { //full clock
+ if (smplCnt > clk + (clk/4)) { //too many samples
+ errCnt++;
+ BinStream[bitCnt++]=77;
+ } else if (waveHigh) {
+ BinStream[bitCnt++] = invert;
+ BinStream[bitCnt++] = invert;
+ } else if (!waveHigh) {
+ BinStream[bitCnt++] = invert ^ 1;
+ BinStream[bitCnt++] = invert ^ 1;
+ }
+ waveHigh ^= 1;
+ smplCnt = 0;
+ } else if (smplCnt > (clk/2) - (clk/5)) {
+ if (waveHigh) {
+ BinStream[bitCnt++] = invert;
+ } else if (!waveHigh) {
+ BinStream[bitCnt++] = invert ^ 1;
+ }
+ waveHigh ^= 1;
+ smplCnt = 0;
+ } else if (!bitCnt) {
+ //first bit
+ waveHigh = (BinStream[i] >= high);
+ smplCnt = 1;
+ } else {
+ //transition bit? ignore
+ }
+ }
+ }
+ *size = bitCnt;
+ return errCnt;
+}
+