• BTN_CANCEL : flyer_controller
• BTN_ESTOP : flyer_controller
• BTN_OPERATIONAL_MODE_ATTITUDE : flyer_controller
• BTN_OPERATIONAL_MODE_HOVER : flyer_controller
• BTN_PAUSE : flyer_controller
• BTN_PROCEED : flyer_controller
• BTN_STANDBY_GO_OPERATIONAL : flyer_controller
• BTN_TRIGGER : flyer_controller