struct rc_proto_hdr {
uint8_t type;
-};
+} __attribute__((packed));
+
struct rc_proto_channel {
uint8_t type;
int16_t axis[AXIS_NUMBER];
-};
+} __attribute__((packed));
struct rc_proto_range {
uint8_t type;
uint8_t power_level;
-};
+} __attribute__((packed));
void rc_proto_rx_range(int power_level);