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implement marking the second STT when detected

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This commit is contained in:
marshmellow42 2017-02-28 16:35:01 -05:00
commit ab812dfae5
3 changed files with 18 additions and 4 deletions
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14
common/lfdemod.c
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@ -1596,9 +1596,14 @@ int pskRawDemod(uint8_t dest[], size_t *size, int *clock, int *invert)
return errCnt;
}
bool DetectST(uint8_t buffer[], size_t *size, int *foundclock) {
size_t ststart = 0, stend = 0;
return DetectST_ext(buffer, size, foundclock, &ststart, &stend);
}
//by marshmellow
//attempt to identify a Sequence Terminator in ASK modulated raw wave
bool DetectST(uint8_t buffer[], size_t *size, int *foundclock) {
bool DetectST_ext(uint8_t buffer[], size_t *size, int *foundclock, size_t *ststart, size_t *stend) {
size_t bufsize = *size;
//need to loop through all samples and identify our clock, look for the ST pattern
uint8_t fndClk[] = {8,16,32,40,50,64,128};
@ -1751,7 +1756,7 @@ bool DetectST(uint8_t buffer[], size_t *size, int *foundclock) {
size_t newloc = 0;
i=0;
if (g_debugMode==2) prnt("DEBUG STT: Starting STT trim - start: %d, datalen: %d ",dataloc, datalen);
bool firstrun = true;
// warning - overwriting buffer given with raw wave data with ST removed...
while ( dataloc < bufsize-(clk/2) ) {
//compensate for long high at end of ST not being high due to signal loss... (and we cut out the start of wave high part)
@ -1764,6 +1769,11 @@ bool DetectST(uint8_t buffer[], size_t *size, int *foundclock) {
buffer[dataloc] = buffer[dataloc+2];
buffer[dataloc+1] = buffer[dataloc+2];
}
if (firstrun) {
*ststart = dataloc;
*stend = dataloc+(clk*4);
firstrun=false;
}
for (i=0; i<datalen; ++i) {
if (i+newloc < bufsize) {
if (i+newloc < dataloc)