[Top][All Lists]

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

Re: [Paparazzi-devel] Modem communication problems

From: Gareth Roberts
Subject: Re: [Paparazzi-devel] Modem communication problems
Date: Tue, 6 Jul 2010 17:55:54 +0100

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 
> blinking. 
> 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 software.
> 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

reply via email to

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