#include <stdint.h>
-void monitor_init();
-void monitor_check();
-uint8_t monitor_command();
+void monitor_init(void);
+void monitor_check(void);
+uint16_t monitor_track_current(void);
+uint16_t monitor_input_voltage(void);
+uint8_t monitor_command(const uint8_t *, uint8_t);
#endif