extern int EmSendCmd(uint8_t *resp, uint16_t respLen);
extern int EmGetCmd(uint8_t *received, uint16_t *len, uint8_t *parity);
int EmSendCmdPar(uint8_t *resp, uint16_t respLen, uint8_t *par);
extern int EmSendCmd(uint8_t *resp, uint16_t respLen);
extern int EmGetCmd(uint8_t *received, uint16_t *len, uint8_t *parity);
int EmSendCmdPar(uint8_t *resp, uint16_t respLen, uint8_t *par);