From: Marc Kleine-Budde <mkl@pengutronix.de>
To: gianluca <gianlucarenzi@eurekelettronica.it>,
"linux-can@vger.kernel.org" <linux-can@vger.kernel.org>
Subject: Re: Socketcan correct way to bootup...
Date: Wed, 09 Jul 2014 13:16:31 +0200 [thread overview]
Message-ID: <53BD248F.5030608@pengutronix.de> (raw)
In-Reply-To: <53BD1BE1.8050403@eurekelettronica.it>
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On 07/09/2014 12:39 PM, gianluca wrote:
> I was wondering if there is some "Offical" way to bring-up a socketcan
> interface during bootup of a Linux System. Actually I write a simple
> script BEFORE running my application in this way:
Depends on your Distribution/init system.
> # run.sh 125000 75 can0
>
> [ run.sh ]
> #!/bin/sh
> BITRATE=$1
> SAMPLE=".$2"
> INTERFACE=$3
> ip link set $INTERFACE up type can bitrate ${BITRATE} sample-point
> ${SAMPLE}
> ip -details link show $INTERFACE
> while [ true ];
> do
> ./myapplication
> done
>
> Are there some guidelines on how to approach this startup? i.e. I was
> thinking about similar to ifup /etc/network/interface but with the
> addendum of the bitrate and sample point...
On recent Debian based Distris you can use ifup/ifdown for CAN
interfaces. See the man page of interfaces.
If you use busybox's ifup/ifdown you can fall back to the "inet manual"
mode and specify /sbin/ip commands to configure and up/down your
interface. On systemd you can add a service that starts CAN and runs
before your actual program.
Marc
BTW: you probably want to integrate your application into the automatic
startup via an init script or in new designs with systemd...and _not_
start it by hand.
--
Pengutronix e.K. | Marc Kleine-Budde |
Industrial Linux Solutions | Phone: +49-231-2826-924 |
Vertretung West/Dortmund | Fax: +49-5121-206917-5555 |
Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de |
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next parent reply other threads:[~2014-07-09 11:16 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <53BD1BE1.8050403@eurekelettronica.it>
2014-07-09 11:16 ` Marc Kleine-Budde [this message]
2014-07-09 12:29 ` Socketcan correct way to bootup Yegor Yefremov
2014-07-09 12:36 ` Marc Kleine-Budde
2014-07-09 12:44 ` Yegor Yefremov
2014-07-09 23:45 ` Oliver Hartkopp
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