safety and safety button: refactoring #19413

msg/CMakeLists.txt

@@ -52,6 +52,7 @@ set(msg_files
 	airspeed_wind.msg
 	autotune_attitude_control_status.msg
 	battery_status.msg
+	button_event.msg
 	camera_capture.msg
 	camera_status.msg
 	camera_trigger.msg

msg/button_event.msg

@@ -0,0 +1,6 @@
+uint64 timestamp			# time since system start (microseconds)
+bool triggered				# Set to true if the event is triggered
+
+# TOPICS button_event safety_button
+
+uint8 ORB_QUEUE_LENGTH = 2