Re: [Paparazzi-devel] Problem with Parrot AR Drone 2 and Flight Recorder

[Ben Laurie]

On 10 July 2013 17:04, Freek van Tienen <address@hidden> wrote:
> Hello,
>
> Are you trying to upload the SDK version?

The A/C is "ardrone2_sdk" and the target is "ap".

> And does the PFD(Primary Flight Display) in the GCS work?

By "work" do you mean that it should show, for example, me tilting the
copter? If so, then: no.

Also, in the logging window, I see "BAT LOW CATASTROPHE" which seems
not good. The battery is not low, tho...

Actually, I just tried re-uploading and re-executing, and this time
the PFD does work - at least, the attitude does - the heading (I'm
assuming that's the right hand bar) does not. This time the logging
window does not complain about low battery, and the Bat thing shows
9.9 (was 10 when I started).


> We currently are
> having some problems with the SDK version that it sometimes doesn't seem to
> get any navdata, and I think it has something to do with the internal socket
> connections. You could try to telnet and kill the ap.elf and run it trough
> telnet so that you can see the output.

I presume you mean start ap.elf from the command line? Would I expect
to see any output with the standard version? Because I tried that and
it said nothing.

> Then you can easily debug with some
> printf's.

Any suggestions where I should put these printfs?

> The quickfix for the navdata problem is to upload it a couple of
> times until it works.

Upload what, exactly?

> PS. The GPS tab on the GCS doesn't work yet with the parrot GPS, because it
> isn't implemented yet. You need to look at the blocks next to the battery
> level, the lowest one should say either "NO FIX" or "3D FIX".

Aha. It says "NOFIX".

>
>
> 2013/7/9 Ben Laurie <address@hidden>
>>
>> I asked on IRC and was advised to write here.
>>
>> I just tried to get Paparazzi going with the Parrot and Flight
>> Recorder, and, in short, it doesn't work. I've not used Paparazzi
>> before, so I don't really know what to expect, so its hard for me to
>> know what to report here, but in short:
>>
>> a) Uploads to the drone seem to work, I can telnet in and see that
>> ap.elf is running.
>>
>> b) The map interface (GCS?) gets stuck in the "Wait GPS" state and
>> indeed the GPS tab shows nothing except "Pos accuracy: N/A".
>>
>> c) The log claims the battery is critically low, but it was freshly
>> charged.
>>
>> What can I do to help diagnose/fix this (note: I can write code :-)?
>>
>> Oh yes, I followed the directions here:
>> http://paparazzi.enac.fr/wiki/AR_Drone_2/getting_started
>>
>> _______________________________________________
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>
>
>
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