Re: [Paparazzi-devel] Xbee 868 uplink

[Pascal Brisset]

There is an example of such low-bandwidth telemetry file available in 
telemetry/minimal.xml

--Pascal

Gautier Hattenberger wrote:
> Hi,
> The bandwidth of a 868MHz modem is much smaller than the one of a 
> 2.4GHz. If you use the same telemetry file, the result can be an 
> overloading of the downlink that will prevent the uplink to work very 
> well. Removing some of the messages or at least increasing their 
> sending period could solve your problem. I should be able to test this 
> new modem next week I hope.
>
> Gautier
>
> Jeremy MICHEL a écrit :
> > Hello,
> >
> > I am trying to use the new Xbee pro 868 MHz.
> > Downlink works well however I couldn't get the Uplink working reliably.
> > Sometimes I succeed in live changing aircraft's settings by multiple 
> > fast double-clicks... Not user friendly...
> >
> > Datalink is configured in transparent mode which worked well with 
> > Aerocomm modems.
> >
> > The code I used in "my_airframe".xml in order to configure the datalink:
> > ...
> > <section name="DATALINK" prefix="DATALINK_">
> >    <define name="DEVICE_TYPE" value="PPRZ"/>
> >    <define name="DEVICE_ADDRESS" value="...."/>
> > </section>
> > ...
> > ...
> > ap.CFLAGS += -DDOWNLINK -DUSE_UART0 
> > -DDOWNLINK_TRANSPORT=PprzTransport -DDOWNLINK_FBW_DEVICE=Uart0 
> > -DDOWNLINK_AP_DEVICE=Uart0 -DPPRZ_UART=Uart0 -DDATALINK=PPRZ 
> > -DUART0_BAUD=B57600
> > ap.srcs += downlink.c $(SRC_ARCH)/uart_hw.c datalink.c pprz_transport.c
> > ...
> >
> > Any help is welcome,
> >
> > Jeremy
> >
> >
> >
> > _______________________________________________
> > Paparazzi-devel mailing list
> > address@hidden
> > http://lists.nongnu.org/mailman/listinfo/paparazzi-devel
>
>
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