I do not recommend this due to kernel error messaging. Disable the module for lm90 sensor from /etc/modules. Install the i2c utilities; use i2cdetect -y 0 for detecting the address for lm90. Get the temperature with i2cget -y 0 address w Convert the temperature from hex to decimal.
regards, CC -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Stéphane Acounis Sent: Wednesday, March 25, 2009 4:04 PM To: [email protected] Subject: Re: [Voyage-linux] reading temperature Le Wed, 25 Mar 2009 08:59:42 -0500 Jeff Ramin <[email protected]> a écrit: > > Using voyage 0.5.2 on an ALIX board...does anybody know how > to get the current temperature off the board? > Yes, it's explained in the README file: 4.2 ALIX support ====================== 4.2.1 Temperature sensors for ALIX.1 and ALIX2/3 ================================================ When running Voyage Linux with ALIX, choose ALIX profile in voyage update, the required modules would be added to /etc/modules. It adds the following modules in /etc/modules: w83627hf lm90 geodewdt ALIX.1 board uses w83627hf driver while ALIX.2/3 uss lm90. You can get the temperature reading from sensors program, or get the values from sysfs: (for ALIX.1) cat /sys/bus/i2c/drivers/w83627hf/9191-0290/temp1_input cat /sys/bus/i2c/drivers/w83627hf/9191-0290/temp2_input cat /sys/bus/i2c/drivers/w83627hf/9191-0290/temp3_input You may also use sensors utility to get the temperature reading. If temp1 reading may not be ready at boot up, you need to modify w83627hf section in /etc/sensors.conf: chip "w83782d-*" "w83627hf-*" ... set sensor1 1 Known Issue: the readings returned from w83627hf is not very accurate. temp1 reading is too low (~30C) and some offset should be applied. But temp1 reading can move down to 20C if you apply cooling agent on the Geode processor. temp2 and temp3 do not move up or down too much at idle or under high low. (for ALIX.2/3) cat /sys/bus/i2c/drivers/lm90/0-004c/temp1_input cat /sys/bus/i2c/drivers/lm90/0-004c/temp2_input -- Stéphane ACOUNIS SUBATECH Nantes - Service d'Électronique Tél: 02-51-85-84-28 06-64-62-99-20 «Faut pas se laisser abattre» devise Kennedy _______________________________________________ Voyage-linux mailing list [email protected] http://list.voyage.hk/mailman/listinfo/voyage-linux _______________________________________________ Voyage-linux mailing list [email protected] http://list.voyage.hk/mailman/listinfo/voyage-linux
