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AW: [Paparazzi-devel] Modem communication problems

From: Roman Nikitin
Subject: AW: [Paparazzi-devel] Modem communication problems
Date: Tue, 6 Jul 2010 20:30:02 +0100

I proved the communication between the modems with help of the X-CTU
software. It is definitely working by now. The "data in" led is also fine.
So the problem is somewhere in GCS.

-----Ursprüngliche Nachricht-----
Von: address@hidden
[mailto:address@hidden Im Auftrag
von Gareth Roberts
Gesendet: Dienstag, 6. Juli 2010 17:56
An: address@hidden
Betreff: Re: [Paparazzi-devel] Modem communication problems

Roman, do you have access to two computers?
Try using something like picocom  or screen(on linux) or Hyperterminal (on
windows) to chat between the two.  For example, under linux:
Laptop 1:
        screen /dev/ttyUSB0 9600
Laptop 2:
        screen /dev/ttyUSB0 9600
Laptop 1:
        Type "Hello World"
        Nothing should appear on the screen of laptop 1
Laptop 2:
        The words "Hello World" should magically appear.
You can also do this using one laptop.  Open two terminal windows and change
one of the device names to /dev/ttyUSB1.
If that doesn't work, it ain't a paparazzi problem!
Good luck, and I think you might be overcomplicating things - XBees usually
just magically work out of the box @ 9600.

On 6 Jul 2010, at 17:50, Roman Nikitin wrote:

> Hello guys, 
> I have still the same problem as before. I cannot get my modems speaking
to each other. I thought that it was the problem in my ap board, but now I
have a new one and the modems still does not work.
> My components are: TWOG, LEA-5H GPS, two IRSs, XBEE pro 802.15.4 modems. 
> The board is flashed with MJ5. One green and one red on the ap board are
> Modem configuration: First, I did default setting for both of the modems.
The baud is 9600 on both, the modem connected over USB is "coordinator" and
the modem connected to the ap board is "end device". Please, if somebody has
the same modem model as I have, let me know if the settings are right?
> I tried also to change the modem settings to "coordinator" and to "end
device" for both modem at the same time. It did not work. 
> So as I have the same problem with a new TWOG as with old one, I can see
that the problem is somewhere in Software or wires. The wires were
controlled twice by me. I am pretty sure they are right. So it should be
> Any ideas what I can do? I know it is difficult to explain everything via
e-mails and it takes a lot of time. It would be nice if you could find some
time to contact me over Skype or IRC channel. I am there tonight and during
the whole day tomorrow. 
> Thank you very much.
> Regards, 
> Roman
> Bristol Institute of Technology 
> University of the West of England
> Aerospace Systems Engineering
> email: address@hidden
> Mob.: +44 (0) 7760806643
> Skype: nikitin.roman   (in UK)
> _______________________________________________
> Paparazzi-devel mailing list
> address@hidden

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