Re: [lm-sensors] Standalone driver for W83677HG-I, NCT6775F,

["Ian Dobson" <i.dobson@planet-ian.com>]

--------------------------------------------------
From: "Guenter Roeck" <guenter.roeck@ericsson.com>
Sent: Saturday, February 05, 2011 8:15 PM
To: "Andrea Rizzolo" <andrea.rizzolo@gmail.com>
Cc: <lm-sensors@lm-sensors.org>
Subject: Re: [lm-sensors] Standalone driver for W83677HG-I, 
NCT6775F,NCT6776F

> On Sat, Feb 05, 2011 at 02:00:09PM -0500, Andrea Rizzolo wrote:
>> hi,
>> thank you very much, here on intel DH57JG it works. `sensors` output:
>>
>> nct6775-isa-0680
>> Adapter: ISA adapter
>> in0:         +0.93 V  (min =  +0.00 V, max =  +1.74 V)
>> in1:         +0.78 V  (min =  +0.00 V, max =  +0.00 V)   ALARM
>> in2:         +3.41 V  (min =  +0.00 V, max =  +0.00 V)   ALARM
>> in3:         +3.41 V  (min =  +0.00 V, max =  +0.00 V)   ALARM
>> in4:         +1.26 V  (min =  +0.00 V, max =  +0.00 V)   ALARM
>> in5:         +0.78 V  (min =  +0.00 V, max =  +0.00 V)   ALARM
>> in6:         +1.06 V  (min =  +0.00 V, max =  +0.00 V)   ALARM
>> in7:         +3.36 V  (min =  +0.00 V, max =  +0.00 V)   ALARM
>> in8:         +3.30 V  (min =  +0.00 V, max =  +0.00 V)   ALARM
>> fan1:          0 RPM  (min =    0 RPM, div = 2)  ALARM
>> fan2:          0 RPM  (min =    0 RPM, div = 2)  ALARM
>> fan3:          0 RPM  (min =    0 RPM, div = 2)  ALARM
>> fan4:          0 RPM  (div = 2)  ALARM
>> temp1:       +31.0캜  (high =  +0.0캜, hyst =  +0.0캜)  ALARM  sensor = 
>> diode
>> temp2:       +32.0캜  (high = +80.0캜, hyst = +75.0캜)  sensor = diode
>> temp3:       +23.0캜  (high = +80.0캜, hyst = +75.0캜)  sensor = 
>> thermistor
>> cpu0_vid:   +2.050 V
>>
> Hi Andrea,
>
> excellent - that matches the output I get. Now all we have to do is to 
> match the values
> to actual voltages. in2 and in3 match the 3.3V seen in the BIOS, but for 
> the others
> I have no idea.
>
> Thanks,
> Guenter
>
>
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Hi,

Not bad, the results look almost the same as the standalone "hack" driver 
for the n6776 I'm working on, looks as if I can stop now. The only thing I'm 
seeing is that on fan headers where no fan is attached I'm seeing 164RPM.

The NCT6776F seems to use a 13-bit counter for the fans. The RPM formula is 
RPM = 1.35e6 / count. The value 1.35e6 value might come from a 22.5 kHz 
counter. Now if the counter reaches the maximum value, which is 8191 for a 
13-bit counter, we get exactly an RPM of 164.815041.

nct6776-isa-0290
Adapter: ISA adapter
in0:         +1.18 V  (min =  +0.95 V, max =  +1.26 V)
in1:         +1.02 V  (min =  +0.90 V, max =  +1.20 V)
in2:         +3.36 V  (min =  +3.01 V, max =  +3.50 V)
in3:         +3.34 V  (min =  +3.01 V, max =  +3.50 V)
in4:         +1.03 V  (min =  +1.00 V, max =  +1.10 V)
in5:         +2.04 V  (min =  +1.90 V, max =  +2.00 V)   ALARM
in6:         +0.80 V  (min =  +0.77 V, max =  +0.90 V)
in7:         +3.42 V  (min =  +3.01 V, max =  +3.50 V)
in8:         +3.30 V  (min =  +3.01 V, max =  +3.50 V)
fan1:        530 RPM  (min =    0 RPM)  ALARM
fan2:       1030 RPM  (min =    0 RPM)  ALARM
fan3:        164 RPM  (min =    0 RPM)  ALARM
fan4:        784 RPM  (min =    0 RPM)  ALARM
fan5:        164 RPM  (min =    0 RPM)  ALARM
temp1:       +23.0째C  (high = +35.0째C, hyst = +37.0째C)  sensor = 
thermistor
temp2:       -60.0째C  (high = +50.0째C, hyst = +55.0째C)  sensor = diode
temp3:       +37.0째C  (high = +50.0째C, hyst = +55.0째C)  sensor = 
thermistor
cpu0_vid:   +2.050 V


Regards
Ian Dobson 


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