As part of an Aeromapper X5 I bought a preconfigured APM 2.6. After some initial, pretty successful tests, I had to make some inquiries about RC setup. Two days later, I tried to reconnect the APM in order to do a proper radio calibration.
However, since then the APM performs very strange. I did an EEPROM reset, which didn't help. I reinstalled the newest firmware, 2.74b but the problems seem to persist. The APM is now running standalone (no other devices attached), connected and powered to the PC through USB.
What I'm trying to do:
1. Connecting the Mission Planner (1.2.84) to the APM through MAVLINK.
Works. Upon connection, the parameters are successfully uploaded ("Got param ..." dialog).
2. In Mission Planner I'm now switching to "Flight Modes" tab and
change Flight Model 1 from "RTL" to "Manual"
3. Now I press "Save Modes", after a timeout of about 5 seconds I get a popup
message "Failed to set Flight modes".
4. Same happens if I try to modify any other parameter and then try to write the param to the APM.
What is wrong, do I miss something very basic?
What can I do to further investigate the problem?
PS: Switching to terminal mode and connecting to the APM works, I get the following prompt:
Opened com port
Init ArduPlane V2.74b
Free RAM: 2335
load?Compass initialisation failed!
Press ENTER 3 times to start interactive setup
ArduPlane V2.74b]
ArduPlane V2.74b]
ArduPlane V2.74b]
ArduPlane V2.74b] ?
Commands:
logs
setup
test
reboot
help
ArduPlane V2.74b]
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