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Refactor parity functions
[proxmark3-svn] / armsrc / iso14443a.h
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1//-----------------------------------------------------------------------------
2// Merlok - June 2011
3// Gerhard de Koning Gans - May 2008
4// Hagen Fritsch - June 2010
5//
6// This code is licensed to you under the terms of the GNU GPL, version 2 or,
7// at your option, any later version. See the LICENSE.txt file for the text of
8// the license.
9//-----------------------------------------------------------------------------
10// Routines to support ISO 14443 type A.
11//-----------------------------------------------------------------------------
12
534983d7 13#ifndef __ISO14443A_H
14#define __ISO14443A_H
1f065e1d 15
534983d7 16#include "common.h"
39864b0b 17#include "mifaresniff.h"
534983d7 18
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19typedef struct {
20 enum {
21 DEMOD_UNSYNCD,
7bc95e2e 22 // DEMOD_HALF_SYNCD,
23 // DEMOD_MOD_FIRST_HALF,
24 // DEMOD_NOMOD_FIRST_HALF,
e691fc45 25 DEMOD_MANCHESTER_DATA
26 } state;
7bc95e2e 27 uint16_t twoBits;
28 uint16_t highCnt;
e691fc45 29 uint16_t bitCount;
30 uint16_t collisionPos;
31 uint16_t syncBit;
6a1f2d82 32 uint8_t parityBits;
33 uint8_t parityLen;
e691fc45 34 uint16_t shiftReg;
35 uint16_t samples;
36 uint16_t len;
7bc95e2e 37 uint32_t startTime, endTime;
e691fc45 38 uint8_t *output;
6a1f2d82 39 uint8_t *parity;
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40} tDemod;
41
7bc95e2e 42typedef enum {
43 MOD_NOMOD = 0,
44 MOD_SECOND_HALF,
45 MOD_FIRST_HALF,
46 MOD_BOTH_HALVES
47 } Modulation_t;
48
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49typedef struct {
50 enum {
51 STATE_UNSYNCD,
52 STATE_START_OF_COMMUNICATION,
53 STATE_MILLER_X,
54 STATE_MILLER_Y,
55 STATE_MILLER_Z,
7bc95e2e 56 // DROP_NONE,
57 // DROP_FIRST_HALF,
58 } state;
59 uint16_t shiftReg;
ee1eadee 60 int16_t bitCount;
7bc95e2e 61 uint16_t len;
62 uint16_t byteCntMax;
63 uint16_t posCnt;
64 uint16_t syncBit;
6a1f2d82 65 uint8_t parityBits;
66 uint8_t parityLen;
ef00343c 67 uint32_t fourBits;
7bc95e2e 68 uint32_t startTime, endTime;
69 uint8_t *output;
6a1f2d82 70 uint8_t *parity;
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71} tUart;
72
73
6a1f2d82 74extern void GetParity(const uint8_t *pbtCmd, uint16_t len, uint8_t *par);
e691fc45 75extern void AppendCrc14443a(uint8_t *data, int len);
20f9a2a1 76
6a1f2d82 77extern void ReaderTransmit(uint8_t *frame, uint16_t len, uint32_t *timing);
78extern void ReaderTransmitBitsPar(uint8_t *frame, uint16_t bits, uint8_t *par, uint32_t *timing);
79extern void ReaderTransmitPar(uint8_t *frame, uint16_t len, uint8_t *par, uint32_t *timing);
80extern int ReaderReceive(uint8_t *receivedAnswer, uint8_t *par);
20f9a2a1 81
7bc95e2e 82extern void iso14443a_setup(uint8_t fpga_minor_mode);
6a1f2d82 83extern int iso14_apdu(uint8_t *cmd, uint16_t cmd_len, void *data);
e691fc45 84extern int iso14443a_select_card(uint8_t *uid_ptr, iso14a_card_select_t *resp_data, uint32_t *cuid_ptr);
902cb3c0 85extern void iso14a_set_trigger(bool enable);
534983d7 86
87#endif /* __ISO14443A_H */
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