On Wed, 19 Feb 2014 03:47:50 -0800 (PST), ianp wrote: > And > here I thought I could finalize my configuration for this board. > Anyhow, keeping in mind that only one of in1, in4, in5, and in6 can be > used for generic inputs, here's what I have done so far for +12V > scaling, using the guide from > http://www.lm-sensors.org/wiki/VoltageLabelsAndScaling. > > I have removed my custom configuration at this point, so that I'm using the default configuration: > > ### unscaled sensors output: > > # sensors -s > # sensors -u > w83627dhg-isa-0290 > Adapter: ISA adapter > in1: > in1_input: 0.984 > in1_min: 0.912 > in1_max: 1.440 > in1_alarm: 0.000 > in4: > in4_input: 1.656 > in4_min: 1.632 > in4_max: 1.800 > in4_alarm: 0.000 > in5: > in5_input: 1.688 > in5_min: 2.040 > in5_max: 2.040 > in5_alarm: 1.000 > in6: > in6_input: 1.896 > in6_min: 1.800 > in6_max: 1.904 > in6_alarm: 0.000 > > ### computation: > > +12V samples: 12.091 (screenshot from the manual), 12.460, 12.513 (these are the only two values I have observed in the bios) > > 12.460 - 12.091 = 0.369 > 12.513 - 12.460 = 0.053 > > From the above, it seems clear that 1 LSB of the ADC corresponds to 53 > mV after scaling. And I know that it corresponds to 8 mV before > scaling. So I conclude that the scaling factor is 53/8. And I > validate this conclusion as: > > 12.460 / (53/8) = 1.880754717 > > which > is close enough to in6 (1.896). To test this out, I created a test > configuration file (/etc/sensors.d/test.conf) as follows: > > compute in6 @*(53/8), @/(53/8) It turns out that a very frequent pair of scaling resistors is 10 Ohm and 56 Ohm, which leads to: compute in6 @*(1+56/10), @/(1+56/10) This maps your raw reading (1.896) to exactly 12.513 which is one of the values you saw in the BIOS, and also maps integer register values to 12.091 and 12.460. > set in6_min 12 * 0.95 > set in6_max 12 * 1.05 > > ### scaled sensors output: > > # sensors -s > # sensors -u > w83627dhg-isa-0290 > Adapter: ISA adapter > Vcore: > in0_input: 1.104 > in0_min: 1.072 > in0_max: 1.184 > in0_alarm: 0.000 > in1: > in1_input: 0.992 > in1_min: 0.912 > in1_max: 1.440 > in1_alarm: 0.000 > in4: > in4_input: 1.656 > in4_min: 1.632 > in4_max: 1.800 > in4_alarm: 0.000 > in5: > in5_input: 1.688 > in5_min: 2.040 > in5_max: 2.040 > in5_alarm: 1.000 > in6: > in6_input: 1.896 > in6_min: 1.800 > in6_max: 1.904 > in6_alarm: 0.000 > > Not only did in6 remained the same, but also the min and max values from my test configuration did not take effect. > > Please advice on how to proceed from here. You must have changed the wrong file, or the wrong section in the right file. It should work. -- Jean Delvare Suse L3 Support http://jdelvare.nerim.net/wishlist.html _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
