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From: Guenter Roeck <guenter@roeck-us.net>
To: lm-sensors@vger.kernel.org
Subject: Re: [lm-sensors] [PATCH] hwmon: (it87) Add support for  IT8781F, IT8782F, IT8783E/F
Date: Sat, 24 Mar 2012 16:23:13 +0000	[thread overview]
Message-ID: <6.2.5.6.2.20120324091434.02773d68@roeck-us.net> (raw)

Hi Bjoern,

At 01:11 AM 3/24/2012, Björn Gerhart wrote:
[ ... ]

>     label temp3 "CPU T."
>     compute temp3 100+@,-1*(100-@)

Is it possible that this is due to a bad sensor type configuration ?

Thermal diodes have a "current mode" and a 
"voltage mode", and if misconfigured (or 
miswired) the reported temperature difference is 
just about in that range. Difference in wiring, 
if I understand it correctly, is that the + pin 
is pulled high with a resistor in voltage mode, 
which is not the case in current mode.

Problem with the wrong reading is that it affects 
the sensor's dynamic range. You don't have much 
dynamic range left if the reading is off by 100 degrees.

Thanks,
Guenter 


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             reply	other threads:[~2012-03-24 16:23 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-03-24 16:23 Guenter Roeck [this message]
2012-03-24 18:07 ` [lm-sensors] [PATCH] hwmon: (it87) Add support for IT8781F, IT8782F, IT8783E/F Guenter Roeck
2012-03-26 16:08 ` Björn Gerhart
2012-03-26 17:01 ` Jean Delvare
2012-03-26 17:38 ` Guenter Roeck
2012-03-26 19:05 ` Guenter Roeck
2012-03-27 19:12 ` Björn Gerhart
2012-03-27 19:21 ` Björn Gerhart
2012-03-27 23:28 ` Guenter Roeck
2012-03-29 19:46 ` Björn Gerhart
  -- strict thread matches above, loose matches on Subject: below --
2012-03-08  4:25 Guenter Roeck
2012-03-13 18:43 ` Bjoern Gerhart
2012-03-15 21:13 ` Guenter Roeck
2012-03-15 21:18 ` Jean Delvare
2012-03-23 21:02 ` Jean Delvare
2012-03-23 21:17 ` Jean Delvare
2012-03-23 23:24 ` Björn Gerhart
2012-03-24  4:18 ` Guenter Roeck
2012-03-24  7:05 ` Jean Delvare
2012-03-24  8:11 ` Björn Gerhart
2012-03-24  8:37 ` Jean Delvare
2012-03-24 15:22 ` Guenter Roeck

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