extern OutputPacket packet;
-void output_init();
-void clear_packet();
+void output_init(void);
+void clear_packet(void);
void output_set_power(uint8_t);
-uint8_t output_command();
+uint8_t output_is_power_on();
+uint8_t output_command(const uint8_t *, uint8_t);
#endif