log-temperature.sh

Copyright 2013, 2014 Siim Orasmäe.

A little Bash script which polls and outputs Raspberry Pi's SoC temperature and any 1-Wire temperature sensors which are connected to said RPi. The order of output is: SoC first, then all of the 1-Wire stuff which it finds (in alphabetical order, based on directory names/unique id's).

Tested with RPi model A (v.2), RPi model B (v.2) and DS18B20 sensors on Raspbian.

Requirements

Raspbian does not come with a CLI calculator(?), so use sudo apt-get install bc first.

1-Wire modules with modprobe w1-gpio, modprobe w1-therm or stick them in /etc/modules.

NOTICE: This script does not work without any 1-Wire sensors attached!

Usage

	./log-temperature.sh [-i SECONDS] [-1] [-t] [-f] [-h]

• -i interval of readings (in seconds)
• -1 poll once and exit
• -t display only temperatures, not datetime
• -f display temperature in Fahrenheit
• -h print help

Notes

• Since the 1-Wire interface is quite slow, the interval between polls is dependent on it's speed. Meaning, that the interval which you set, is actually the time between the last 1-Wire signal arriving and a new query being made. It is not, as one would expect, the time between the start of the first query until the start of the next query. If that makes sense.

• I don't know how this will behave if there are other sensors/stuff/things attached to the 1-Wire line. Don't have any to test with. If you do, let me know!

TO-DO

• Add output to file with -o
• Add quiet mode with -q
• Test with other 1-Wire sensors
• Make it work without 1-Wire sensors (why?)

Contact

Visit serenity.ee

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Licence

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.