In the LM85 driver, I did the following:
Reading Indicated Speed
0 -1
1 max speed
... ...
254 min speed
255 0
:v)
Peter Wilsmore wrote:
>Doh! Yeah your right, I didn't think the r value would ever be zero, but
>it would have been right to check anyway and saved me a lot of time.
>Just has a philosophical question, if I do get a value of 0 returned
>should I be setting the fan speed to 0 (which reflects what happens when
>the fan stops spinning) or to max value (which reflects what is
>happening when the interval between pulses is smaller than the unit
>measured)? In my case it seems the fan is spinning very, very fast so
>the interval between pulses is smaller than the units they are measuring
>so setting the fan speed to 0 does not reflect what is actually
>happening in the chassis.
>
>Thanks,
>
>Peter Wilsmore
>
>ASI SOLUTIONS
>Direct: 1300130 837
>
>
>
>>-----Original Message-----
>>From: Philip Pokorny [mailto:ppokorny at penguincomputing.com]
>>
>>Could it be that you're dividing by zero? You don't check the value
>>
>>
>of
>
>
>>'r' before the division to be sure that it's not zero. If there is a
>>fan failure and the current fan speed is 0, then perhaps r is returned
>>as 0 instead of it's max value.
>>
>>:v)
>>
>>--
>>Philip Pokorny, Director of Engineering
>>Tel: 415-954-2823 Fax: 415-954-2899 Toll Free: 888-PENGUIN
>>PENGUIN COMPUTING, INC.
>>www.penguincomputing.com
>>
>
>
>
>
--
Philip Pokorny, Director of Engineering
Tel: 415-954-2823 Fax: 415-954-2899 Toll Free: 888-PENGUIN
PENGUIN COMPUTING, INC.
www.penguincomputing.com
