Hi Jan, On Sun, 4 Nov 2012 01:55:03 +0100, Jan Weber wrote: > Hi folks, > > I'm using a homebrew i2c-tiny-usb interface connected to a TMP75 sensor > (TIs equivalent of the LM75). I'm using Ubuntu 8.04 with kernel version > 2.6.24, but I've tested other versions as well, all with the same result. > > sensors-detect is able to find the device at it's adress 0x48. I can access > the device using i2cdump and I'm able to retrieve data with i2cget. I'm > sure the hardware is working fine so far. > > But the sensors program keeps on complaining that there are no sensors > found. All kernel modules are loaded (i2c-core, i2c-dev, i2c-tiny-usb, lm75) > > i2c-tiny-usb and sensors don't seem to harmonize somehow. > > Do you have any hints for me? Yes. The TMP75 device can't be auto-detected, so you have to instantiate it explicitly. Find out the i2c bus number of i2c-tiny-usb on your system, then do: # echo tmp75 0x48 > /sys/bus/i2c/devices/i2c-<busnr>/new_device where <busnr> is the i2c bus number of i2c-tiny-usb on your system. As this bus number is likely to change, you'll probably want to write a small script finding the bus number for you: for i2c in /sys/bus/i2c/devices/i2c-* do if grep -q ^i2c-tiny-usb $i2c/name then echo tmp75 0x48 > $i2c/new_device fi done If you are good at udev rules, the same can certainly be achieved with a udev rule, with the benefit of supporting device hot-plug. -- Jean Delvare http://khali.linux-fr.org/wishlist.html _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
