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1 // Copyright (C) 2014
2 //
3 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
4 // at your option, any later version. See the LICENSE.txt file for the text of
5 // the license.
6 //-----------------------------------------------------------------------------
7 // Low frequency demod related commands
8 // marshmellow
9 // note that many of these demods are not the slickest code and they often rely
10 // on peaks and clock instead of converting to clean signal.
11 //
12 //-----------------------------------------------------------------------------
13
14 #ifndef LFDEMOD_H__
15 #define LFDEMOD_H__
16 #include <stdint.h> // for uint_32+
17 #include <stdbool.h> // for bool
18
19 //generic
20 uint8_t justNoise(uint8_t *bits, size_t size);
21 size_t addParity(uint8_t *BitSource, uint8_t *dest, uint8_t sourceLen, uint8_t pLen, uint8_t pType);
22 int askdemod(uint8_t *BinStream, size_t *size, int *clk, int *invert, int maxErr, uint8_t amp, uint8_t askType);
23 void askAmp(uint8_t *BitStream, size_t size);
24 int BiphaseRawDecode(uint8_t * BitStream, size_t *size, int offset, int invert);
25 uint32_t bytebits_to_byte(uint8_t* src, size_t numbits);
26 uint32_t bytebits_to_byteLSBF(uint8_t* src, size_t numbits);
27 uint16_t countFC(uint8_t *BitStream, size_t size, uint8_t fskAdj);
28 int DetectASKClock(uint8_t dest[], size_t size, int *clock, int maxErr);
29 uint8_t DetectCleanAskWave(uint8_t dest[], size_t size, uint8_t high, uint8_t low);
30 uint8_t detectFSKClk(uint8_t *BitStream, size_t size, uint8_t fcHigh, uint8_t fcLow);
31 int DetectNRZClock(uint8_t dest[], size_t size, int clock);
32 int DetectPSKClock(uint8_t dest[], size_t size, int clock);
33 int DetectStrongAskClock(uint8_t dest[], size_t size, uint8_t high, uint8_t low);
34 bool DetectST(uint8_t buffer[], size_t *size, int *foundclock);
35 int fskdemod(uint8_t *dest, size_t size, uint8_t rfLen, uint8_t invert, uint8_t fchigh, uint8_t fclow);
36 int getHiLo(uint8_t *BitStream, size_t size, int *high, int *low, uint8_t fuzzHi, uint8_t fuzzLo);
37 uint32_t manchesterEncode2Bytes(uint16_t datain);
38 int ManchesterEncode(uint8_t *BitStream, size_t size);
39 int manrawdecode(uint8_t *BitStream, size_t *size, uint8_t invert);
40 int nrzRawDemod(uint8_t *dest, size_t *size, int *clk, int *invert);
41 uint8_t parityTest(uint32_t bits, uint8_t bitLen, uint8_t pType);
42 uint8_t preambleSearch(uint8_t *BitStream, uint8_t *preamble, size_t pLen, size_t *size, size_t *startIdx);
43 int pskRawDemod(uint8_t dest[], size_t *size, int *clock, int *invert);
44 void psk2TOpsk1(uint8_t *BitStream, size_t size);
45 void psk1TOpsk2(uint8_t *BitStream, size_t size);
46 size_t removeParity(uint8_t *BitStream, size_t startIdx, uint8_t pLen, uint8_t pType, size_t bLen);
47
48 //tag specific
49 int AWIDdemodFSK(uint8_t *dest, size_t *size);
50 int Em410xDecode(uint8_t *BitStream, size_t *size, size_t *startIdx, uint32_t *hi, uint64_t *lo);
51 int FDXBdemodBI(uint8_t *dest, size_t *size);
52 int gProxII_Demod(uint8_t BitStream[], size_t *size);
53 int HIDdemodFSK(uint8_t *dest, size_t *size, uint32_t *hi2, uint32_t *hi, uint32_t *lo);
54 int IOdemodFSK(uint8_t *dest, size_t size);
55 int indala26decode(uint8_t *bitStream, size_t *size, uint8_t *invert);
56 int ParadoxdemodFSK(uint8_t *dest, size_t *size, uint32_t *hi2, uint32_t *hi, uint32_t *lo);
57 int PyramiddemodFSK(uint8_t *dest, size_t *size);
58 int VikingDemod_AM(uint8_t *dest, size_t *size);
59 int PrescoDemod(uint8_t *dest, size_t *size);
60 int NedapDemod(uint8_t *dest, size_t *size);
61 int JablotronDemod(uint8_t *dest, size_t *size);
62 int Visa2kDemod_AM(uint8_t *dest, size_t *size);
63 int NoralsyDemod_AM(uint8_t *dest, size_t *size);
64 int IdteckDemodPSK(uint8_t *dest, size_t *size);
65 #endif
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