| 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 */ |