Hello, I’m trying to connect an onboard computer(Raspberry Pi 4B) via GPIO to use MavSDK to control a Pixhawk 6c via telem 2. I can’t get a response from the Pixhawk. The problem appears to be with the configuration on the Pi side. I say this because I also have the Holybro Vision drone. If I p…

Hi! I’m using MAVSDK C++ to control Pixhawk 5 via telem2 from RPi 4B. I get serial connection like this example . ConnectionResult connection_result = mavsdk.add_any_connection(argv[1]); In my connection argv[1] = std::string “serial:///dev/serial0:921600” If port is fine but no autopilot you ge…

Thank you for offering to help! A few questions. What OS are you running on the RPi? Did you use raspi-config to enable serial over GPIO? Did you do any other config on the RPi to get the serial connection working?

OS - Raspberry PI OS (32-BIT) Raspi-config - yes Other config - don’t remember, but think nope ) This is very helpfull link . My config PX4: [image]

Ok thanks! I’m going to give it another try tonight using your settings…

Hi, Still having this issue? I encountered a similar issue when trying to use GPIO on a Jetson. Then I reverted to using a converter to regular usb and that’s working ok.

Perhaps a little late now but I just wanted to check that you connected TX to RX and RX to TX between the RPi and Pixhawk? Looks like you’ve also connected up a common ground which is good. I’d also look into baud rates on both the RPi and Pixhawk, just make sure they are the same else you won’t se…

I had connection problems with the Pixhawk 6c too. In my case, I was able to solve them by setting MAV_1_RADIO_CTL to disabled and MAV_1_FLOW_CTRL to force off See here for the complete description.

Controlling Pixhawk 6c with Raspberry Pi 4B

blank-supportgis May 23, 2023, 6:35am 8

I had connection problems with the Pixhawk 6c too. In my case, I was able to solve them by setting

MAV_1_RADIO_CTL to disabled and
MAV_1_FLOW_CTRL to force off

See here for the complete description.

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Controlling Pixhawk 6c with Raspberry Pi 4B

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