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[Paparazzi-devel] Modem communication


From: Roman Nikitin
Subject: [Paparazzi-devel] Modem communication
Date: Tue, 12 Oct 2010 13:59:55 +0100

Felix, 

thank you for the answer. I changed the code in control_panel.xml to 

<session name="XBee 2.4GHz">
        <program name ="Data Link">
                <arg flag="-d" constant="/dev/ttyUSB0"/>
                <arg flag="-uplink" constant=""/>
                <arg flag="-s" constant="57600"/>
        <program/>
        <program name ="Server">
        <program name ="GCS">
<session/>

I have no error message any more in GCS window, but the modem are not speaking 
to each other either. In message window don´t appear any messages. 

My codes in airframe file look still like this

!--Communication -->
 <subsystem name="telemetry"  type="transparent">
  <param name="MODEM_BAUD"   value="B57600">
 </subsystem>

With baud rate of 57600. I suppose it is right. Please correct me, if I am 
wrong. 

Guys, I hope you have more ideas for the problem solving. Please let me know 
them. 

I am not sure that all my usb ports are active. Logically it should be the 
case, because it is possible to flash the ap board using usb connection.

It would be nice, if any could send me your own working files, including 
control_panel and conf files. So the settings could be proved.

The problem is not solved, so I am still looking for more ideas. 

Thank you.

Regards, 

Roman

 


-----Ursprüngliche Nachricht-----
Von: address@hidden [mailto:address@hidden Im Auftrag von Felix Ruess
Gesendet: Montag, 11. Oktober 2010 18:11
An: address@hidden
Betreff: Re: [Paparazzi-devel] launchsitl, simstil, Paparazzi Center

Hi Roman,

you started a session, probably "Flight address@hidden".
As you can see the link is looking for the modem under /dev/paparazzi/xbee
And your modem is not available under that device. You can make your
specific modem available under that name by creating an appropriate
udev rule if you want.
Also you started the link with "-transport xbee", but I guess you use
transparent mode...

So just make a new session for yourself with the appropriate
parameters, I'm guessing
.../paparazzi3/sw/ground_segment/tmtc/link  -d /dev/ttyUSB -s 57600

Cheers, Felix

On Mon, Oct 11, 2010 at 6:09 PM, Roman Nikitin <address@hidden> wrote:
> Hi all,
>
> I am back and continue the work on my final year project. As I did stop to 
> work on my autopilot the old system was used and all my stuff worked just 
> perfect.
>
> Yesterday I did update and now I am using the current system based on 
> subsystems. The problem I have now is that I does not have communication 
> between the modems. I have Xbee pro (series 1) modem. The error I can see in 
> GCS window is
>
> Run '/home/uav/paparazzi3/sw/ground_segment/tmtc/link  -d /dev/paparazzi/xbee 
> -transport xbee -s 57600'
> Run '/home/uav/paparazzi3/sw/ground_segment/tmtc/server '
> Run '/home/uav/paparazzi3/sw/ground_segment/cockpit/gcs '
> Failure("Error opening modem serial device : fd < 0 (/dev/paparazzi/xbee)")
> Broadcasting on network 127.255.255.255, port 2010
>
> DONE (exec /home/uav/paparazzi3/sw/ground_segment/tmtc/link  -d 
> /dev/paparazzi/xbee -transport xbee -s 57600 2>&1
>
> I suppose it is something wrong in the codes, but the issue can't be found. 
> My modems are set up with baud 57600.They worked just fine with old system, I 
> am pretty sure that no farther changes are required for new subsystem. I am 
> using
>
> <!--Communication -->
> <subsystem name="telemetry"  type="transparent">
>  <param name="MODEM_BAUD"   value="B57600">
> </subsystem>
>
> code in my airframe file.
>
> Any ideas what should I change to avoid the error message?
>
> Thank you.
>
> Regards,
>
> Roman
>
>
> Roman Nikitin
>
> Bristol Institute of Technology
> University of the West of England
> Aerospace Systems Engineering
> email: address@hidden
> Mob.: +44 (0) 7760806643
>
>  please consider the environment before printing emails.
>
>
>
>
>
>
> _______________________________________________
> Paparazzi-devel mailing list
> address@hidden
> http://lists.nongnu.org/mailman/listinfo/paparazzi-devel
>

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