uint16_t Iso15693Crc(uint8_t *v, int n);
int Iso15693AddCrc(uint8_t *req, int n);
char* Iso15693sprintUID(char *target, uint8_t *uid);
-unsigned short iclass_crc16(char *data_p, unsigned short length);
+unsigned short iclass_crc16(uint8_t *data_p, unsigned short length);
#endif