+// 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 nested\r
+#define MEM_CHUNK 10000\r
+#define TRY_KEYS 50\r
+#define NS_TOLERANCE 10 // [distance avg-value, distance avg+value]\r
+#define NS_RETRIES_GETNONCE 15\r
+#define NES_MAX_INFO 5\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\r
+uint8_t* mifare_get_bigbufptr(void);\r
+int mifare_sendcmd_short(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t data, uint8_t* answer);\r
+int mifare_sendcmd_shortex(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t data, uint8_t* answer, uint32_t * parptr);\r
+\r