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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 nestedVector { uint32_t nt, ks1; } nestedVector;
26
27 typedef struct {
28 enum {
29 DEMOD_UNSYNCD,
30 DEMOD_START_OF_COMMUNICATION,
31 DEMOD_MANCHESTER_D,
32 DEMOD_MANCHESTER_E,
33 DEMOD_MANCHESTER_F,
34 DEMOD_ERROR_WAIT
35 } state;
36 int bitCount;
37 int posCount;
38 int syncBit;
39 int parityBits;
40 uint16_t shiftReg;
41 int buffer;
42 int buff;
43 int samples;
44 int len;
45 enum {
46 SUB_NONE,
47 SUB_FIRST_HALF,
48 SUB_SECOND_HALF
49 } sub;
50 uint8_t *output;
51 } tDemod;
52
53 typedef struct {
54 enum {
55 STATE_UNSYNCD,
56 STATE_START_OF_COMMUNICATION,
57 STATE_MILLER_X,
58 STATE_MILLER_Y,
59 STATE_MILLER_Z,
60 STATE_ERROR_WAIT
61 } state;
62 uint16_t shiftReg;
63 int bitCnt;
64 int byteCnt;
65 int byteCntMax;
66 int posCnt;
67 int syncBit;
68 int parityBits;
69 int samples;
70 int highCnt;
71 int bitBuffer;
72 enum {
73 DROP_NONE,
74 DROP_FIRST_HALF,
75 DROP_SECOND_HALF
76 } drop;
77 uint8_t *output;
78 } tUart;
79
80
81 extern byte_t oddparity (const byte_t bt);
82 extern uint32_t GetParity(const uint8_t * pbtCmd, int iLen);
83 extern void AppendCrc14443a(uint8_t* data, int len);
84
85 extern void ReaderTransmitShort(const uint8_t* bt);
86 extern void ReaderTransmit(uint8_t* frame, int len);
87 extern void ReaderTransmitPar(uint8_t* frame, int len, uint32_t par);
88 extern int ReaderReceive(uint8_t* receivedAnswer);
89 extern int ReaderReceivePar(uint8_t* receivedAnswer, uint32_t * parptr);
90
91 extern void iso14443a_setup();
92 extern int iso14443a_select_card(uint8_t * uid_ptr, iso14a_card_select_t * resp_data, uint32_t * cuid_ptr);
93 extern void iso14a_set_trigger(int enable);
94
95 extern void iso14a_clear_tracelen(void);
96 extern void iso14a_set_tracing(int enable);
97
98 #endif /* __ISO14443A_H */
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