What is MavLink? Micro Aerial Vehicle Link is nothing but a message. It is a protocol for communication specially developed for information Exchange between. How the Mission Planner communicates with APM/ PX4 and vice-versa?
Note, when I mean GCS, I mean it as Mission Planner(MP) or QGroundControl(QGC), DroidPlanner (DP) or our own custom tool IPSILUM, that we are working with to communicate with the copter and that we invite you to implement in your RPAs. How? Call us and we will talk about it. We are now looking for RPAs manufacturers to give away IPSILUM.