enum{
	RECEIVING,
	NOT_RECEIVING
	};

enum{
  AM_TOF=196,
  AM_CHIRPMSG=197,
  AM_TRANSMITMODEMSG=199,
  AM_TIMESTAMPMSG=198
    };

enum{
  LEN_CHIRPMSG=29,
  LEN_TRANSMITMODEMSG=1,
  LEN_TIMESTAMPMSG=4
    };

enum{TRANSMIT,RECEIVE};

typedef struct TransmitModeMsg{
  uint8_t mode;
} TransmitModeMsg;

typedef struct TimestampMsg{
	uint16_t transmitterId;
	uint16_t timestamp;
} TimestampMsg;

typedef struct ChirpMsg{
  uint16_t transmitterId;
  uint8_t data[27];
} ChirpMsg;