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

[Ben Laurie]

On 14 July 2013 13:46, Ben Laurie <address@hidden> wrote:
> On 10 July 2013 17:04, Freek van Tienen <address@hidden> wrote:
>> Hello,
>>
>> Are you trying to upload the SDK version?
>> And does the PFD(Primary Flight Display) in the GCS work? 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. Then you can easily debug with some
>> printf's. The quickfix for the navdata problem is to upload it a couple of
>> times until it works.
>>
>> 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".
>
> OK, so I patched in some debugging, and the problem seems to be that
> I'm not getting GPS packets at all...
>
> When option 27 arrives, it has length 12 and is all zeroes (apart from
> the tag and length field, of course). Not sure where to go from here,
> since that's obviously not the data expected...

And it appears, from navdata_keys.h in the ardrone2 sdk that tag 27 is
actually for zimmu_3000, whatever that is. However, I don't get any
tags that aren't already accounted for by one of the tags in the SDK.

>
>>
>>
>> 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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