armsrc/iso14443a.h

   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 typedef struct {
  19         enum {
  20                 DEMOD_UNSYNCD,
  21                 // DEMOD_HALF_SYNCD,
  22                 // DEMOD_MOD_FIRST_HALF,
  23                 // DEMOD_NOMOD_FIRST_HALF,
  24                 DEMOD_MANCHESTER_DATA
  25         } state;
  26         uint16_t twoBits;
  27         uint16_t highCnt;
  28         uint16_t bitCount;
  29         uint16_t collisionPos;
  30         uint16_t syncBit;
  31         uint8_t  parityBits;
  32         uint8_t  parityLen;
  33         uint16_t shiftReg;
  34         uint16_t samples;
  35         uint16_t len;
  36         uint32_t startTime, endTime;
  37         uint8_t  *output;
  38         uint8_t  *parity;
  39 } tDemod;
  40
  41 typedef enum {
  42         MOD_NOMOD = 0,
  43         MOD_SECOND_HALF,
  44         MOD_FIRST_HALF,
  45         MOD_BOTH_HALVES
  46         } Modulation_t;
  47
  48 typedef struct {
  49         enum {
  50                 STATE_UNSYNCD,
  51                 STATE_START_OF_COMMUNICATION,
  52                 STATE_MILLER_X,
  53                 STATE_MILLER_Y,
  54                 STATE_MILLER_Z,
  55                 // DROP_NONE,
  56                 // DROP_FIRST_HALF,
  57                 } state;
  58         uint16_t shiftReg;
  59         uint16_t bitCount;
  60         uint16_t len;
  61         uint16_t byteCntMax;
  62         uint16_t posCnt;
  63         uint16_t syncBit;
  64         uint8_t  parityBits;
  65         uint8_t  parityLen;
  66         uint16_t highCnt;
  67         uint16_t twoBits;
  68         uint32_t startTime, endTime;
  69     uint8_t *output;
  70         uint8_t *parity;
  71 } tUart;
  72
  73
  74
  75 extern byte_t oddparity (const byte_t bt);
  76 extern void GetParity(const uint8_t *pbtCmd, uint16_t len, uint8_t *par);
  77 extern void AppendCrc14443a(uint8_t *data, int len);
  78
  79 extern void ReaderTransmit(uint8_t *frame, uint16_t len, uint32_t *timing);
  80 extern void ReaderTransmitBitsPar(uint8_t *frame, uint16_t bits, uint8_t *par, uint32_t *timing);
  81 extern void ReaderTransmitPar(uint8_t *frame, uint16_t len, uint8_t *par, uint32_t *timing);
  82 extern int ReaderReceive(uint8_t *receivedAnswer, uint8_t *par);
  83
  84 extern void iso14443a_setup(uint8_t fpga_minor_mode);
  85 extern int iso14_apdu(uint8_t *cmd, uint16_t cmd_len, void *data);
  86 extern int iso14443a_select_card(uint8_t *uid_ptr, iso14a_card_select_t *resp_data, uint32_t *cuid_ptr);
  87 extern void iso14a_set_trigger(bool enable);
  88
  89 #endif /* __ISO14443A_H */