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XBee and APM 1.4 communication problem

Posted by Jean-Luc Combe on December 20, 2011 at 2:30am

Hi,

I'm using an APM 1.4, with 2 xbee pro in 2,4Ghz mode (i'm in France and 900mhz is not alowed).

Xbee are ok, seems to be... My APM works fine with the USB cable.

But when i try to connect GCS to APM through Xbee, i get a problem :

getparamlist retry 3 (and 2 and 1) sys 1 comp 1

And then i have a line

Not a 1280

And my APMplanner freeze. I have to kill the command window.

 

Is anybody able to help me with this Please?

Did i miss something?

 

thanks a lot.

Jean-Luc

 

My conf :

APM 1.4 Arduplane 2.26

GCS : APM PLanner 1.1.9

XbeePro 2,  2,4ghz from Udrones.com, BR 57600

 

 

 

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Replies

  • Dave C January 26, 2012 at 12:51am

    Hi, I have a slightly different problem but related. My xbees where setup when i got them (2.4ghz with apm1.4) They communicate fine, i can get data from them and also to them. 

    However, in the terminal window I get a constant stream of junk. Initially i just presumed I was looking at the xbee communication, but now I'm not sure. Should it be possible to download logs from the APM using the xbees? If i try i just get a lot of garbage and beeping in the terminal and log windows :/

  • Nicolas Garza December 26, 2011 at 3:11pm

    Hi Jean-Luc.

    I have your exact same problem, but with 900Mhz Xbees. The problems with Xbee's that I've had are related with the board (i have an xtream bee, and a red one from sparkfun).

    First everything worked out of the box with the xtream bee. After a crash, i had to solder a jumper cable from the DIDO to the DI pin, and everything worked again. After another crash the xtream bee board stopped working properly and started to mess with any xbee that was connected there (took me several hours and two bricked xbee's to find out), so i changed the board to the one from sparkfun but now nothing works.

    From time to time I get the same messages you got ("getparamlist retry 3 (and 2 and 1) sys 1 comp 1") but I mainly get timeout messages, and i don't know what to do anymore.

    What's even more bothering is that I have two APM's, and with 2.1.0 and another with 2.0.xx (i don't remember right now the exact release) and none of them work. Both xbee's are communicating through XCTU and all the settings are correct.

    I will try what Montasser suggests, let me know if you succeed in solving the problem, will do the same.

  • stephen.myshak December 20, 2011 at 1:52pm

    Yes I just recieved the same setup from Udrones on Friday (2 Xbees and 2560 Mega pre-sodered), and have the exact same problem. I have sent them an email, but have not heard back form them. Martin has tried to help me fix this problem, but to no avail, anyone else have any ideas?

    I receive the the following errors 

    Mavlink read packet read error: The operation has timed out.

    Mavlink Bad Packet (crc fail) len 0 crc 65535 pkno 0

    MAv Data: len 0 btr 0

    Not a 1280

    Not a 2560

    Im running ArduCopter V.2.1.0 Alpha Quad Firmware on APM 2560 + IMU 1.4 shield boards, Planner 1.1.11, and 2 - Xbee Pro S1 @ 2.4 ghz from Udrones, with BR 57600 and XBP24 Modem, Function set = XBEE PRO 802.15.4, Version 10ED.

    Thanks,

    Steve

  • Don Brooks December 20, 2011 at 7:10am

    Just for clarity, the title of your post states APM2. Is this an APM2 (purple) or an APM 1.4?

This reply was deleted.

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