Hi Friedrich,
on what board are you using the xbee? Is there an on-board radio? It
seems like there is another interface already initialized.
Best regards,
Martine

2017-03-20 16:05 GMT+01:00 Wiegel, Friedrich (IAI) <friedrich.wie...@kit.edu>:
> Hi Marine,
>
> first of all, thanks for your answer. The payload of my udp massage is only 
> "TEST", the maximum PSDU size for xbee modul is 100 bytes and my payload is 
> only 80 bytes. The next thing I noticed is following, if I set 
> "GNRC_NETIF_NUMOF  :=2" then I can send the udp messages. And the transceiver 
> send periodically some messages as the samd21-xpro does.
>
> Is this helpful in any way?
>
> The Problem is when I set " GNRC_NETIF_NUMOF  :=2" I get some stack overflow 
> if I want to set some global address of my interface.
>
> Best regard,
>
> Friedrich
>
> -----Ursprüngliche Nachricht-----
> Von: devel [mailto:devel-boun...@riot-os.org] Im Auftrag von Martine Lenders
> Gesendet: Montag, 20. März 2017 15:08
> An: RIOT OS kernel developers <devel@riot-os.org>
> Betreff: Re: [riot-devel] Sending the udp packets does not work with the xbee 
> module
>
> Hi Friedrich,
> the xbee module has some tricky restrictions on sent packets. Did you make 
> sure that the (link-layer) payload fits these? Regarding
> debugging: Try compiling with CFLAGS_OPT=-O0 and CFLAGS="-g3 -gdwarf-3". This 
> usually leads to more satisfying results. I don't have an xbee module at hand 
> at the moment, otherwise I would test it myself.
>
> Best regards,
> Martine
>
> 2017-03-20 12:07 GMT+01:00 Wiegel, Friedrich (IAI) <friedrich.wie...@kit.edu>:
>> Hello everybody,
>>
>>
>>
>> I just played little bit with the gnrc_networking example and tried to
>> send an udp package with xbee module. Unfortunately this doesn’t work.
>>
>>
>>
>> To see what the problem is, I switched on the debugging in the
>> gnrc_netdev2_xbee.c but the program does not address this adaptation layer.
>> Even the gnrc_netdev2.c is not addressed.
>>
>>
>>
>> Ping6 works perfectly and the creation of an udp server and the
>> receiving of udp packets goes well. Only sending makes problems, and
>> only with xbee module with samr21-xpro everything goes perfectly.
>>
>>
>>
>> Does any of you know what is going wrong?
>>
>>
>>
>> Best regards,
>>
>>
>>
>> Friedrich
>>
>>
>>
>>
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>> devel@riot-os.org
>> https://lists.riot-os.org/mailman/listinfo/devel
>>
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