- return -5;
-}
-
-// by marshmellow
-// find viking preamble 0xF200 in already demoded data
-int VikingDemod_AM(uint8_t *dest, size_t *size) {
- //make sure buffer has data
- if (*size < 64*2) return -2;
-
- size_t startIdx = 0;
- uint8_t preamble[] = {1,1,1,1,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
- uint8_t errChk = preambleSearch(dest, preamble, sizeof(preamble), size, &startIdx);
- if (errChk == 0) return -4; //preamble not found
- uint32_t checkCalc = bytebits_to_byte(dest+startIdx,8) ^ bytebits_to_byte(dest+startIdx+8,8) ^ bytebits_to_byte(dest+startIdx+16,8)
- ^ bytebits_to_byte(dest+startIdx+24,8) ^ bytebits_to_byte(dest+startIdx+32,8) ^ bytebits_to_byte(dest+startIdx+40,8)
- ^ bytebits_to_byte(dest+startIdx+48,8) ^ bytebits_to_byte(dest+startIdx+56,8);
- if ( checkCalc != 0xA8 ) return -5;
- if (*size != 64) return -6;
- //return start position
- 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)
-{
- //make sure buffer has enough data
- if (*size < 128) return -1;
-
- size_t startIdx = 0;
- uint8_t preamble[] = {0,0,0,0,0,0,0,0,0,0,1};
-
- uint8_t errChk = preambleSearch(dest, preamble, sizeof(preamble), size, &startIdx);
- if (errChk == 0) return -2; //preamble not found
- return (int)startIdx;
-}
-
-// by marshmellow
-// FSK Demod then try to locate an AWID ID
-int AWIDdemodFSK(uint8_t *dest, size_t *size)
-{
- //make sure buffer has enough data
- if (*size < 96*50) return -1;
-
- if (justNoise(dest, *size)) return -2;
-
- // FSK demodulator
- *size = fskdemod(dest, *size, 50, 1, 10, 8); // fsk2a RF/50
- if (*size < 96) return -3; //did we get a good demod?
-
- uint8_t preamble[] = {0,0,0,0,0,0,0,1};
- size_t startIdx = 0;
- uint8_t errChk = preambleSearch(dest, preamble, sizeof(preamble), size, &startIdx);
- if (errChk == 0) return -4; //preamble not found
- if (*size != 96) return -5;
- return (int)startIdx;
-}
-
-// by marshmellow
-// FSK Demod then try to locate a Farpointe Data (pyramid) ID
-int PyramiddemodFSK(uint8_t *dest, size_t *size)
-{
- //make sure buffer has data
- if (*size < 128*50) return -5;
-
- //test samples are not just noise
- if (justNoise(dest, *size)) return -1;
-
- // FSK demodulator
- *size = fskdemod(dest, *size, 50, 1, 10, 8); // fsk2a RF/50
- if (*size < 128) return -2; //did we get a good demod?
-
- uint8_t preamble[] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1};
- size_t startIdx = 0;
- uint8_t errChk = preambleSearch(dest, preamble, sizeof(preamble), size, &startIdx);
- if (errChk == 0) return -4; //preamble not found
- if (*size != 128) return -3;
- return (int)startIdx;