I successfully setup my arduplane (APM 1280) with s/w version 2.24. Everything checked out with the ground tests. Yesterday, when I tried to update to v 2.26 something went wrong. The symptoms are as follows.
The rx/servos are powered by a 5v battery (fully charged). This also
powers the APM and oilpan. Now when I power up, the power leds turn on properly, the MUX led works properly and the PPM flashes rapidly.
However, the system does not initialise (no waggling control
surfaces, etc). There is a brief burst from the TX/RX leds, then nothing. There is no activity from the GPS led.
If I connect to the USB or FTDI ports, the only change is the PPM, which goes to a slower flash. If I try APM Setup in Mission Planner, there is no communication and it times out after 30 sec.
I uploaded v2.26 from both the USB and FTDI ports with Arduino and
according to Arduino the upload was successful in both cases. There
was no indication of communication from the TX/RX leds during this
process, however.
The servos work properly in manual mode but are silent in stabilize mode.
Anyone have an idea what is going on? Has my APM failed somehow?
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Permalink Reply by Omar Achraf on November 27, 2011 at 2:00pm I had the same problem with my APM 2560 and Arduplane 2.26.
I them entered in console mode, did the reset then all tests. After that, i switched to flight mode, I compile and loaded the APM 2.26 through Arduino 22 and did all setup through APM Planner.
All works after these steps. But after unplug the batteries and plug again, the problem returns. By doing the steps above It works again and if unplug the batteries,next time I plug the problems repeats.
I them return the load to APM 2.24 for while.
The logging functionality changed between 2.24 and 2.26, and the new logging system may have trouble in some cases with existing logs.
Try this: Downgrade to 2.24. Erase logs. Upgrade to 2.26. This may take care of your problem.
Permalink Reply by Omar Achraf on November 28, 2011 at 9:44am Thank You Doug,
I did what you suggested and It worked.
How much time APM on is required to fullfill the log space?
Permalink Reply by Omar Achraf on November 29, 2011 at 4:07am Hi, I have more feedbacks. I configured the modes and failsafe for 2.26 exactly the same way I did for 2.24:
1=RTL; 2=Loiter; 3 and 4= Stabilize; 5=FBW-A; 6=Manual;
Failsafe (throtle) = 1 with PWM threshold = 950 (RX was bind to produce 903 when out of signal and 1100 with 0 throtle);
what happens:
Nothing happens when selecting RTL or Loiter in APM 2.26.
By turning off DX6i transmiter, there is no RTL engaged. By turning on Again, APM 2.26 the motor starts spining.
Radio is DX6i with 5 modes set as explained in the APM manual pages.
These settings works with 2.24. I load 2.24 again as well did all the settings agains to check. Did 2 times to see if I forgot something to check.
I did not fly yet. I`m back to 2.24 again.
regards, Omar
Omar,
There was an eeprom configuration change between 2.24 and 2.26, so your eeprom settings may be corrupt. I do not remember any changes to the failsafe functionality in that period. Recheck all your parameter values related to failsafe and make sure they store correctly.
Permalink Reply by Fred Forbes on November 28, 2011 at 7:15pm Doug.it worked for me too. Thanks!
I uploaded APM 2.24 and it worked. Then I went back to 2.26 and, surprise, it worked also.
I couldn't erase the log because I had to disable CLI to fit the software in the ATmega 1280
The only remaining question mark is that after initialization the B led is on continuously
Permalink Reply by Fred Forbes on November 29, 2011 at 10:32am Ignore my comment re the B led. I looked at the instructions again and B led on continuously is the correct operation
Permalink Reply by Paul Feely on December 1, 2011 at 1:24pm Glad I came across thread as was starting to rip setup apart suspecting h/w issue. Same problem but fix not working for me...
Downgrade to 2.24, system good. CLI,logs,erase.
Upgrade to 2.26 thro' Planner, after first reset same problem (no ABC lights). CAn't access by MAVlink but CLI still good for all tests etc. however 'logs' and it hangs so problem seems to be with log.
Is there something else I should do to clear out logs between version (other than CLI, logs, erase. Reboot then upgrade through planner)
Thanks, Paul
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