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ADD: adding a presco demod, given 0x10D as preamble, .. *work in progress*

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iceman1001 2016-02-14 11:58:25 +01:00
commit 4469412e88
3 changed files with 47 additions and 7 deletions
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14
common/lfdemod.c
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@ -677,6 +677,20 @@ int VikingDemod_AM(uint8_t *dest, size_t *size) {
return (int) startIdx;
}
// find presco preamble 0x10D in already demoded data
int PrescoDemod(uint8_t *dest, size_t *size) {
//make sure buffer has data
if (*size < 64*2) return -2;
size_t startIdx = 0;
uint8_t preamble[] = {1,0,0,0,0,1,1,0,1,0,0,0,0,0,0,0,0,0,0,0};
uint8_t errChk = preambleSearch(dest, preamble, sizeof(preamble), size, &startIdx);
if (errChk == 0) return -4; //preamble not found
//return start position
return (int) startIdx;
}
// Ask/Biphase Demod then try to locate an ISO 11784/85 ID
// BitStream must contain previously askrawdemod and biphasedemoded data
int FDXBdemodBI(uint8_t *dest, size_t *size)