Hi guys ! May be some one will help me or at least would share his considerations.
I’ve got Pixhawk 2.4.8 and Arduino Due as a external devise at this stage, but in future it will be replaced with something that has WiFi on board for downloading logs via WiFi. So now I am on the stage settling communication with PX.
I succeeded with downloading logs via Serial 1, 2 and 4 via MavLink.
Serial 4 is unexpectedly slow, 1 and 2 much faster but 900 bits/sec on bodrate 57600 also is not what I dreamt about. I decided to try Serial 0 aka USB but faced with problem that my Due does not see any activity on it. I used 4pin USB connector on the top of PX and connected it to Native USB port of DUE, and - nothing, neither heartbeats nor response on requests. I tried with grounded OTG_ID and without one - nothing, the PX communicates with Mission Planner via USB on the same port settings though, which are the same for all ports I tested: 57 - 1. And… my ideas run out off. What else should I try changing, except for stuff between chair and monitor?