I have a problem with my setup: frequently, the barometric altitude resets to zero randomly in flight. Fortunately it does not lead to crash but I'm worried in case of RTL.
This is an APM2.5 controller, which runs AC3.1.2 with a mavlink extra OSD. All mounted on a QAV400 frame, vibration levels are very low, it's been several months since the quad flight without concern, this is a recent problem and increasingly recurring.
As you can see in the log, the baro pressure is OK, I think the problem is the telemetry information sent to the OSD.
I am interested in any information to solve this problem!