+int GetIso15693CommandFromReader(uint8_t *received, size_t max_len, uint32_t *eof_time);
+void TransmitTo15693Tag(const uint8_t *cmd, int len, uint32_t *start_time);
+int GetIso15693AnswerFromTag(uint8_t* response, uint16_t max_len, uint16_t timeout, uint32_t *eof_time);