Re: [xfbb] AX.25 Packet Radio on a RaspBerry Pi : a success

Ray Wells <vk2tv@xxxxxxxxxxxxxx> · Sun, 12 Aug 2012 19:23:55 +1000

All,

A little more information based on a bit of unscientific testing today 

of RPi with soundmodem.

Yesterday I reported that sm was unstable and locked up randomly. I now 

believe that this may have been a power supply issue. The power supply 

used (mobile phone) was rated at 700mA, the recommended minimum capacity 

for RPi. The 7 port hub that the UCA202 sound card connected to had its 

own 2000mA supply.

Today, I tried running the UCA202 directly from the RPi. The UCA202 is 

rated at 100mA, the supposed load capability of RPi. I didn't manage to 

decode any packets and, upon tx, sm appeared to lock up.

My next step was to put the UCA202 back onto the USB hub and to supply 

the RPi from the 2000mA supply. The result is that sm has been decoding 

packets for well over an hour (at the time of writing this) and will 

happily tx without lock up. It would indeed appear that an adequate 

power supply is an essential component for RPi.

I'm controlling RPi remotely using VNC to provide access to the desktop. 

tightvncserver is consuming about 25% cpu and soundmodem about 74%. The 

result is that cpu load is flat lined at maximum. However, soundmodem 

and RPi appear stable. Ultimately I'll run without the desktop but for 

now it's essential to ongoing testing.

More to follow, I'm sure.

Ray, vk2tv

On 11/08/12 16:11, Ray Wells wrote:

All,

I'll start by saying that my "shack" is very user unfriendly at the 

moment, with nowhere to set up test equipment or radios, however, I 

have managed to decode ax25 (aprs) packets using soundmodem on the 

Raspberry Pi running Bernard's kernel. Soundmodem is unstable and 

crashes but that may be due to the Behringer UCA202 sound card I'm 

using. Others have reported difficulties with the UCA202 in RPi with 

audio applications and, I haven't yet delved into the sound card 

configs except to delete a blacklist entry in /etc/modeprobe.d to get 

the sound card to accept incoming audio. My tests have been very raw 

but have confirmed that using a USB sound card with soundmodem on the 

RPi appears feasible. On tx, I used speaker monitoring of the tx audio 

as an indication of success. What I heard "sounded" correct for 1k2 

packet.

I will, as time permits, try to make more meaningful tests.

Ray vk2tv

On 08/08/12 22:10, remi.chateauneu@xxxxxxx wrote:

Hi All,

Some help about Soundmodem is available here:

http://www.xastir.org/wiki/HowTo:SoundModem

Push-to-talk can be activated with Soundmodem original method but 

also with the very convenient hamlib library ( 

http://sourceforge.net/apps/mediawiki/hamlib/index.php?title=Main_Page )

Hamlib is used by fldigi on Raslberry , therefore it is seriously 

supported.

----- Mail original -----
De: "Ray Wells" <vk2tv@xxxxxxxxxxxxxx>
À: "f6bvp" <f6bvp@xxxxxxx>

Cc: "remi chateauneu" <remi.chateauneu@xxxxxxx>, "List for the LINUX 

version of FBB" <xfbb@xxxxxxxxx>, "Arno Verhoeven" 

<pe1icq@xxxxxxxxxxxxxxxxxxxxxxx>, "Alejandro Santos" 

<alejolp@xxxxxxxxxxxxxx>, "linux-hams" <linux-hams@xxxxxxxxxxxxxxx>, 

"Bernard Pidoux" <bernard.pidoux@xxxxxxx>

Envoyé: Mardi 7 Août 2012 10:16:31
Objet: Re: [xfbb] AX.25 Packet Radio on a RaspBerry Pi : a success

Bernard, Remy, All,

Now that I have Bernard's kernel loaded on my RPi, and I have a Linux
compatible USB soundcard (Behringer UCA202), I will try to get it
working with soundmodem by Saturday or Sunday and report back.

Ray vk2tv

On 07/08/12 18:03, f6bvp wrote:

Hello Remy,

I never used soundmodem for I have been a happy user of two 9612+ dual
channel TNCs for years.

However, with RPi there are no serial port and I guess I will have to
use either an USB to serial adapter or soundmodem.

Meanwhile installing soundmodem performed well.

root@raspberrypi:/home/pi# apt-get install soundmodem
Lecture des listes de paquets... Fait
Construction de l'arbre des dépendances
Lecture des informations d'état... Fait
Les paquets supplémentaires suivants seront installés :
   libaudiofile1 libhamlib2
Les NOUVEAUX paquets suivants seront installés :
   libaudiofile1 libhamlib2 soundmodem

0 mis à jour, 3 nouvellement installés, 0 à enlever et 2 non mis à 

jour.

Il est nécessaire de prendre 718 ko dans les archives.
Après cette opération, 3 131 ko d'espace disque supplémentaires seront
utilisés.
Souhaitez-vous continuer [O/n] ? O
Réception de : 1 http://mirrordirector.raspbian.org/raspbian/
wheezy/main libaudiofile1 armhf 0.3.4-1 [86,9 kB]
Réception de : 2 http://mirrordirector.raspbian.org/raspbian/
wheezy/main libhamlib2 armhf 1.2.15.1-1 [467 kB]
Réception de : 3 http://mirrordirector.raspbian.org/raspbian/
wheezy/main soundmodem armhf 0.16-1 [164 kB]
718 ko réceptionnés en 3s (214 ko/s)
Sélection du paquet libaudiofile1:armhf précédemment désélectionné.
(Lecture de la base de données... 58368 fichiers et répertoires déjà
installés.)
Dépaquetage de libaudiofile1:armhf (à partir de
.../libaudiofile1_0.3.4-1_armhf.deb) ...
Sélection du paquet libhamlib2 précédemment désélectionné.
Dépaquetage de libhamlib2 (à partir de
.../libhamlib2_1.2.15.1-1_armhf.deb) ...
Sélection du paquet soundmodem précédemment désélectionné.
Dépaquetage de soundmodem (à partir de
.../soundmodem_0.16-1_armhf.deb) ...
Traitement des actions différées (« triggers ») pour « man-db »...
Paramétrage de libaudiofile1:armhf (0.3.4-1) ...
Paramétrage de libhamlib2 (1.2.15.1-1) ...
Paramétrage de soundmodem (0.16-1) ...
root@raspberrypi:/home/pi#

Now I will need to read the doc or get some direct help to set up a
starting script.

73 de Bernard, f6bvp

On 07/08/2012 00:59, remi.chateauneu@xxxxxxx wrote:

Did you try to run soundmodem on Raspberry, please ?

----- Mail original -----
De: "Ray Wells"<vk2tv@xxxxxxxxxxxxxx>
À: "f6bvp"<f6bvp@xxxxxxx>
Cc: "List for the LINUX version of FBB"<xfbb@xxxxxxxxx>, "Arno
Verhoeven"<pe1icq@xxxxxxxxxxxxxxxxxxxxxxx>, "C
Schuman"<k4gbb1@xxxxxxxxxxxxxx>, "Lee Woldanski"<ve7fet@xxxxxxxxx>,
"F3KT"<f3kt@xxxxxxx>, "Alejandro Santos"<alejolp@xxxxxxxxxxxxxx>,
"linux-hams"<linux-hams@xxxxxxxxxxxxxxx>, "Bernard
Pidoux"<bernard.pidoux@xxxxxxx>
Envoyé: Samedi 4 Août 2012 23:59:49
Objet: Re: [xfbb] AX.25 Packet Radio on a RaspBerry Pi : a success

Hi Bernard, All,

This is great news because I almost wrote to you yesterday to ask 

if you

had made a .deb package for your kernel.

My two Raspberry Pi's arrived on Friday (I was told 5 weeks and they
arrived in 5 days from Element 14!) and I'm gathering the hardware I

need to get one of them up and running with kernel ax25. One will 

serve

as my aprs gateway machine and maybe a fpac node again.

Ray vk2tv

On 04/08/12 22:21, f6bvp wrote:

Hello all,

This is my first debian package !

http://f6bvp.free.fr/logiciels/ax25/linux-image-3.1.9.080312.ax25+_3.1.9.080312.ax25+-10.00.Custom_armhf.deb 

This is the raspbian kernel image including AX.25 modules (ax25,
6pack, netrom, rose, mkiss,...)

  From your RaspBerry Pi you can download it with wget

wget

http://f6bvp.free.fr/logiciels/ax25/linux-image-3.1.9.080312.ax25+_3.1.9.080312.ax25+-10.00.Custom_armhf.deb 

To install it :
sudo dpkg -i

linux-image-3.1.9.080312.ax25+_3.1.9.080312.ax25+-10.00.Custom_armhf.deb 

Edit /boot/config.txt and add a line at the end with
# for more options see http://elinux.org/RPi_config.txt
kernel vmlinuz-3.1.9.080312.ax25+

reboot

Then download K4GBB install ax25 script for installing ax25 

libraries,

tools and apps.

sudo wget http://f6bvp.free.fr/logiciels/ax25/Instax25.new
sudo chmod +x Instax25.new
./Instax25.new

You may download a sample ax25 device init script :
sudo wget http://f6bvp.free.fr/logiciels/ax25/rc.ax25

and a sample /etc/ax25/ax25ipd.conf
sudo wget http://f6bvp.free.fr/logiciels/ax25/ax25ipd.conf

Then you also need to edit /etc/ax25/axports
such this example :
sudo wget http://f6bvp.free.fr/logiciels/ax25/axports

I may have missed some details.

73 de Bernard, f6bvp
--
To unsubscribe from this list: send the line "unsubscribe
linux-hams" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html

_______________________________________________
xfbb maillist  -  xfbb@xxxxxxxxx
http://mailman.f6fbb.org/mailman/listinfo/xfbb

--

To unsubscribe from this list: send the line "unsubscribe 

linux-hams" in

the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html

--
To unsubscribe from this list: send the line "unsubscribe linux-hams" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html

--
To unsubscribe from this list: send the line "unsubscribe linux-hams" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

--
To unsubscribe from this list: send the line "unsubscribe linux-hams" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


Re: [xfbb] AX.25 Packet Radio on a RaspBerry Pi : a success
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]