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

[Dino Hensen]

Hello Ben Laurie,

We are experiencing the same problem as you have now. I believe the ardrone sdk is outdated (they havent uploaded a new sdk yet), but they do have updated the firmware to include gps data. So 27 is not zimmu_3000, but some kind of gps struct. What helps for us is to keep pressing the Upload button, which will eventually start the autopilot (you will see the battery voltage go from zero to the actual value, notice that the battery voltage is actually in percentages in case of the ardrone2_sdk version). Ofcourse this is not good, and we are looking into solving this a.s.a.p.

Regards,

Dino

On Sun, Jul 14, 2013 at 3:25 PM, Ben Laurie <address@hidden> wrote:

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
>>>
>>> _______________________________________________
>>> Paparazzi-devel mailing list
>>> address@hidden
>>> https://lists.nongnu.org/mailman/listinfo/paparazzi-devel
>>
>>
>>
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