+// mifare 4bit card answers\r
+#define CARD_ACK 0x0A // 1010 - ACK\r
+#define CARD_NACK_NA 0x04 // 0100 - NACK, not allowed (command not allowed)\r
+#define CARD_NACK_TR 0x05 // 0101 - NACK, transmission error\r
+\r
+// reader voltage field detector\r
+#define MF_MINFIELDV 4000\r
+\r
+// debug\r
+// 0 - no debug messages 1 - error messages 2 - all messages 4 - extended debug mode\r
+#define MF_DBG_NONE 0\r
+#define MF_DBG_ERROR 1\r
+#define MF_DBG_ALL 2\r
+#define MF_DBG_EXTENDED 4\r
+\r
+extern int MF_DBGLEVEL;\r
+\r
+//mifare emulator states\r
+#define MFEMUL_NOFIELD 0\r
+#define MFEMUL_IDLE 1\r
+#define MFEMUL_SELECT1 2\r
+#define MFEMUL_SELECT2 3\r
+#define MFEMUL_AUTH1 4\r
+#define MFEMUL_AUTH2 5\r
+#define MFEMUL_WORK 6\r
+#define MFEMUL_WRITEBL2 7\r
+#define MFEMUL_INTREG_INC 8\r
+#define MFEMUL_INTREG_DEC 9\r
+#define MFEMUL_INTREG_REST 10\r
+#define MFEMUL_HALTED 11\r
+\r
+#define cardSTATE_TO_IDLE() cardSTATE = MFEMUL_IDLE; LED_B_OFF(); LED_C_OFF();\r
+\r
+//functions
+uint8_t* mifare_get_bigbufptr(void);
+int mifare_sendcmd_short(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t data, uint8_t* answer, uint8_t *answer_parity, uint32_t *timing);
+int mifare_sendcmd_short_special(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t *data, uint8_t* answer, uint8_t *answer_parity, uint32_t *timing);
+int mifare_sendcmd_shortex(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t data, uint8_t* answer, uint8_t *answer_parity, uint32_t *timing);
+
+int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint8_t isNested);\r
+int mifare_classic_authex(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint8_t isNested, uint32_t * ntptr, uint32_t *timing);
+int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData);
+int mifare_ultra_readblock(uint32_t uid, uint8_t blockNo, uint8_t *blockData);
+int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData);
+int mifare_ultra_writeblock(uint32_t uid, uint8_t blockNo, uint8_t *blockData);
+int mifare_ultra_special_writeblock(uint32_t uid, uint8_t blockNo, uint8_t *blockData);
+int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid);
+int mifare_ultra_halt(uint32_t uid);
+
+// crypto functions
+void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *receivedCmd, int len);
+void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, uint16_t len, uint8_t *par);\r
+uint8_t mf_crypto1_encrypt4bit(struct Crypto1State *pcs, uint8_t data);\r
+\r
+// memory management\r
+uint8_t* get_bigbufptr_recvrespbuf(void);\r
+uint8_t* get_bigbufptr_recvcmdbuf(void);\r
+uint8_t* get_bigbufptr_emlcardmem(void);\r