gistfile1.txt

	dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
	
	timer = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, queue); //run event handler on the default global queue
	dispatch_time_t now = dispatch_walltime(DISPATCH_TIME_NOW, 0);
	dispatch_source_set_timer(timer, now, 140ull * NSEC_PER_MSEC, 5000ull);
	dispatch_source_set_event_handler(timer, ^{
		[self sendPacket:CHANNEL1 yaw:[yaw intValue] pitch:[pitch intValue] throttle:[throttleJoystick intValue] trimAdjust:[trim intValue]];
//		NSLog(@"%d %d %d %d", [yaw intValue], [pitch intValue], [throttleJoystick intValue], [trim intValue]);
		if ([[NSApp delegate] isSerialPortConnected] == YES) {
			
			// set Status to green.
		} else {
			[self stopTimer];
			// set status to red.
		}
	});
	
	
	// now that our timer is all set to go, start it
	dispatch_resume(timer);