@Plkonrad wrote:
I would like to send information from raspberry pi to pixhawk and then send it to the laptop. My idea is to use UART communication Raspberry Pi <-> PIXHAWK. Then I want to extend Mavlink communication frame with my data and send it on the ground via 3dr 433 MHz radio module.
http://ardupilot.org/dev/docs/raspberry-pi-via-mavlink.html
I've made a UART communication same as in the 1st point of the guide above, however I cannot find any information on what data I should put on Raspberry output (telemetry input) to make it recognisable by Pixhawk. I'm also not sure if Pixhawk will send my custom data via Mavlink protocol to the ground station on laptop.I've analyzed Mission Planner sources but I couldn't extract the proper method to attach my own information to the Mavlink communication frame.
I know it could be done by using separate communication canals, f.e. creating a wi-fi connection just for Raspberry Pi and laptop. But 433 MHz module transmission rate is more that enought for my data, the only problem is how to attach my data to the data that are alredy send via Mavlink.
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