Re: [Paparazzi-devel] Non-blocking module code

[Reto Büttner]

Hi all

Just to clarify, there are two different methods to reset the XBee 868
in flight:

1. Reset pin. See Jeremy MICHELs solution:

http://lists.gnu.org/archive/html/paparazzi-devel/2009-04/msg00197.html

This requires connection of the Xbee reset pin to the Tiny P0.14 pin
and some modification in main_ap.c.

2. AT commands. See Gareth Roberts solution:

https://github.com/blutack/paparazzi/blob/v3.9/sw/airborne/modules/xbee_resetter/xbee_resetter.c

This should work without any hardware modifications.

Regards, Reto

2012/7/4 limaiem imed <address@hidden>:
> thanks for this contribution !
> in practical way you use the procedure output I mean xbee_reset_ticks to
> push an analog output to high during a certain period of time to reset the
> xbee modul ? to do this we need to link an analog output to the xbee reset
> pin.
> thanks
>
>
> Imed LIMAIEM
> address@hidden
>
>
> On Tue, Jul 3, 2012 at 12:46 AM, Gareth Roberts
> <address@hidden> wrote:
>>
>> Hi all,
>>
>> I've written a module to reset an xbee via AT commands every 5 minutes
>> (yes, I'm back to the 868's...).
>>
>>
>> https://github.com/blutack/paparazzi/blob/v3.9/sw/airborne/modules/xbee_resetter/xbee_resetter.c
>>
>> It's working well, but the problem I'm using sys_time_usleep to block for
>> a second to allow all in-progress transmissions to clear out, and then
>> another second long block to wait out the guard time.
>>
>> Two questions:
>> - Am I correct in assuming there are no threads & the module code is
>> blocking the main event loop (thereby making landings potentially
>> interesting)?
>> - If yes, is there a relatively safe way to stop the AP code transmitting
>> on the downlink, so I can allow the event loop to continue & re-implement
>> the module using counters?
>>
>> Many thanks,
>> Gareth
>>
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>
>
>
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