OWFS for Raspberry Pi

One Wire File System is a nice package that helps you use 1wire in a simple way.
There is a very good description for how to install OWFS on Raspberry Pi on temperatur.nu. It is in Swedish but should be easy to follow for most of you.

Note that in newer Raspian Wheezy SW there is a conflict between owfs and some sound drivers. To fix this add "blacklist snd_soc_tas5713" to the file /etc/modprobe.d/raspi-blacklist.conf and reboot. Thanks to the people at m.nu forum.

Install OWFS on Fedora

I want to log the outdoor temperature in a database. When I heard about 1wire I thought this would be interesting to test.

On temperatur.nu I found the guide OWFS Howto very useful. There is one thing to update for me:

• I had to start it with the following line:
  /opt/owfs/bin/owfs --allow_other --passive=/dev/ttyS0 /mnt/1wire 

 I also created a start script /etc/rc.d/init.d/start1wire to start it permanently. It is not very beautiful but it seems to work for me.

#!/bin/bash
#
# OWFS
#
# Author:       Niklas Lanzen
# chkconfig:    1000 50 50
# description:  1 wire
#

RETVAL=0;

prog="OWFS (One Wire File System)"
exec="/opt/owfs/bin/owfs --allow_other --passive=/dev/ttyS0  /mnt/1wire"
#lockfile=""

# Source function library.
. /etc/init.d/functions

start() {

        echo -n $"Starting $prog: "
        $exec
        RETVAL=$?
        [ $RETVAL -eq 0 ] && success || failure
        echo
}

stop() {
        [ $UID -eq 0 ] || exit 4
        echo -n $"Stopping $prog: "
        success
        echo
}

restart() {
        stop
        sleep 1
        start
}

case "$1" in
  start)
        start
        ;;
  stop)
        stop
        ;;
  restart)
        restart
        RETVAL=$?
        ;;
  *)
        echo $"Usage: $0 {start|stop|restart}"
        RETVAL=2
        [ "$1" = 'usage' ] && RETVAL=0
esac