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Re: [Paparazzi-devel] Add a delay on power up to avoid bricking xbee

From: Joseph Muhlhausen
Subject: Re: [Paparazzi-devel] Add a delay on power up to avoid bricking xbee
Date: Fri, 20 Feb 2015 15:47:53 -0500

Hi Felix,

I am using transparent mode, I haven't been able to have my xbee 900 talk to each other in API mode using X-CTU so I gave up on the idea of using API. I did however tried to use xbee_api just to see if my xbee would brick when powering up, and it did.

This problem was common in ardupilot flight controllers and since my xbee adapter comes from an ardupilot package that may be it. I am getting another xbee adapter today, I'll see if it makes any difference.


On Fri, Feb 20, 2015 at 3:32 PM, Felix Ruess <address@hidden> wrote:
Hi Joseph,

that sounds bit strange, I've never had this problem before...
What mode are you running the XBee in?
Do you maybe have xbee_api mode configured in your airframe file and are sending some wrong XBEE_INIT codes?

Cheers, Felix

On Thu, Feb 19, 2015 at 8:07 PM, Joseph Muhlhausen <address@hidden> wrote:
I found a solution.

in v5.0 I modified paparazzi/sw/airborne/firmware/fixedwing/main_ap.c

after line 227 #if defined DATALINK I added:

It works although I'm not sure it's the best fix.

On Wed, Feb 18, 2015 at 12:33 AM, Joseph Muhlhausen <address@hidden> wrote:
Hi Guys,

I have been having some trouble with my xbee. It bricks every time I power up the board, but works fine if I power up the board first and then connect the xbee. It might be some sort of signal before power issue.

I am not very familiar with C. How should I got about adding a delay of 1 second before sending a signal through the xbee? Would sleep(1000) at the beginning of telemetry.c do the trick?


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