These are some notes on how to setup various of my developments regarding OWFS on a Raspberry Pi.

I am not going to use the X server on my system, therefore let's clean it up, so future updates will consume less time and resources. See also How to uninstall X Server and Desktop Manager when running as headless server?

apt-get install deborphan
apt-get remove  --auto-remove --purge libx11-.\*
apt-get autoremove --purge libx11-.* lxde-.* raspberrypi-artwork xkb-data omxplayer penguinspuzzle sgml-base xml-core alsa-.* cifs-.* samba-.* fonts-.* desktop-* gnome-.*
sudo apt-get remove --purge $(deborphan)
sudo apt-get autoremove

Install required packages

apt-get install at libow-perl librrdtool-oo-perl libtie-ixhash-perl nginx-light owfs ow-shell php5-cgi php5-cli php5-sqlite libow-php5 rrdtool fcgiwrap
apt-get install ferm lzma nullmailer vim unattended-upgrades #for convenience

* remove 'n' in /usr/lib/perl5/OW.pm at line 68

• Download phpliteadmin from https://code.google.com/p/phpliteadmin/
  • In phplieadmin's configuration file set $directory = '/var/lib/owst/'
• Create sqlite3 database as well as log and lock file and set permissions

  mkdir /var/lib/owst
  sqlite3 /var/lib/owst/owst.sq3 < config/database.sql
  touch /var/lib/owst/owst.lock /var/log/owst.log
  chown pi.www-data /var/lib/owst /var/lib/owst/owst.sq3 /var/lib/owst/owst.lock /var/log/owst.log
  chmod 660 /var/lib/owst/owst.sq3 /var/lib/owst/owst.lock /var/log/owst.log
  chmod 770 /var/lib/owst

• Insert into the databases' table switch the One-Write Switch you want to control
  • ow_type e.g. DS2413
  • ow_address e.g. 3A.B36249000000
  • ow_pio e.g. PIO.B
• Set option “enable_dl” to “on” in /etc/php5/cli/php.ini
• Dynamic loading doesn't work in my setup (using nginx and php-fastcgi, therefore libowphp.so must be loaded in the php5 configuration:
  • Create /etc/php5/mods-available/owphp.ini, write the following content in it

    ; configuration for owphp module
    ; priority=20
    extension=libowphp.so

  • run php5enmod owphp
  • reload php-fastcgi
• Copy cron and sudo config files

  cp config/etc.cron.d.owst /etc/cron.d/owst
  cp config/etc.sudoers.d.owst /etc/sudoers.d/owst

• test with 1wgetValues.pl
• run 1wSensorMon.pl, you get an error that the rrd-file cannot be opened, but that's OK, check /srv/1wMonitoring/sensors.txt
• execute libexec/gen_rrd_create.pl - run the output as a command
• execute 1wSensorMon.pl - no error this time
• activate cron job

  */5 * * * *     root    1wSensorMon.pl    2> /dev/null