paparazzi-devel
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Paparazzi-devel] Xbee 868 uplink


From: Gautier Hattenberger
Subject: Re: [Paparazzi-devel] Xbee 868 uplink
Date: Tue, 28 Apr 2009 17:10:43 +0200
User-agent: Thunderbird 2.0.0.21 (X11/20090409)

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




reply via email to

[Prev in Thread] Current Thread [Next in Thread]