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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
13 #ifndef __ISO14443A_H
14 #define __ISO14443A_H
15 #include "common.h"
16 #include "mifaresniff.h"
17
18 // mifare reader over DMA buffer (SnoopIso14443a())!!!
19 #define MIFARE_BUFF_OFFSET 3560 // \/ \/ \/
20 // card emulator memory
21 #define EML_RESPONSES 4000
22 #define CARD_MEMORY 6000
23 #define CARD_MEMORY_LEN 4096
24
25 typedef struct {
26 enum {
27 DEMOD_UNSYNCD,
28 DEMOD_HALF_SYNCD,
29 DEMOD_MOD_FIRST_HALF,
30 DEMOD_NOMOD_FIRST_HALF,
31 DEMOD_MANCHESTER_DATA
32 } state;
33 uint16_t bitCount;
34 uint16_t collisionPos;
35 uint16_t syncBit;
36 uint16_t parityBits;
37 uint16_t shiftReg;
38 uint16_t samples;
39 uint16_t len;
40 uint8_t *output;
41 } tDemod;
42
43 typedef struct {
44 enum {
45 STATE_UNSYNCD,
46 STATE_START_OF_COMMUNICATION,
47 STATE_MILLER_X,
48 STATE_MILLER_Y,
49 STATE_MILLER_Z,
50 STATE_ERROR_WAIT
51 } state;
52 uint16_t shiftReg;
53 int bitCnt;
54 int byteCnt;
55 int byteCntMax;
56 int posCnt;
57 int syncBit;
58 int parityBits;
59 int samples;
60 int highCnt;
61 int bitBuffer;
62 enum {
63 DROP_NONE,
64 DROP_FIRST_HALF,
65 DROP_SECOND_HALF
66 } drop;
67 uint8_t *output;
68 } tUart;
69
70
71 extern byte_t oddparity (const byte_t bt);
72 extern uint32_t GetParity(const uint8_t *pbtCmd, int iLen);
73 extern void AppendCrc14443a(uint8_t *data, int len);
74
75 extern void ReaderTransmit(uint8_t *frame, int len, uint32_t *timing);
76 extern void ReaderTransmitBitsPar(uint8_t *frame, int bits, uint32_t par, uint32_t *timing);
77 extern void ReaderTransmitPar(uint8_t *frame, int len, uint32_t par, uint32_t *timing);
78 extern int ReaderReceive(uint8_t *receivedAnswer);
79 extern int ReaderReceivePar(uint8_t *receivedAnswer, uint32_t *parptr);
80
81 extern void iso14443a_setup();
82 extern int iso14_apdu(uint8_t *cmd, size_t cmd_len, void *data);
83 extern int iso14443a_select_card(uint8_t *uid_ptr, iso14a_card_select_t *resp_data, uint32_t *cuid_ptr);
84 extern void iso14a_set_trigger(bool enable);
85 extern void iso14a_set_timeout(uint32_t timeout);
86
87 extern void iso14a_clear_tracelen();
88 extern void iso14a_set_tracing(bool enable);
89
90 #endif /* __ISO14443A_H */
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