Simplify the use of timers, timer13 sends ultrasonic waves, timer16 counts (debounce time and flight time)

The ultrasonic transducer is driven only after each command is issued.

Inc/command.h

@@ -81,6 +81,8 @@ void command_process(void);
  */
 void handle_command(const uint8_t *cmd, uint8_t len);
 
+void ultrasonic_distance_raw_value_report(void);
+
 /** @} */ // end of Command group
 
 #endif // COMMAND_H