Subject: Re: PROPOSAL: API for environmental sensors
To: None <tech-kern@netbsd.org>
From: Greg A. Woods <woods@most.weird.com>
List: tech-kern
Date: 11/21/1999 12:58:23
[ On Friday, November 19, 1999 at 01:29:01 (-0700), Tim Rightnour wrote: ]
> Subject: Re: PROPOSAL: API for environmental sensors
>
> On 16-Nov-99 eric.delcamp@legrand.fr wrote:
> > 
> > This API seems OK for me, but it ignore one major interrest of having sensors
> > in a computer : watchdog. Maybe we need an interface to set watchdog values
> > and a reaction mechanism to theses values (API 1.1 ?).
> 
> Personally I feel that this stuff should be done in userland anyhow.  I'm not
> saying there shouldn't be an API extension, or separate API if people want to
> do that.. but I think it should be totally optional to the ENVSYS API.

Chips like the LM78/LM79 have built-in limit registers and interrupt
generators.  Unfortunately I've yet to find a motherboard where the
interrupt output is hooked up to anything useful.   In theory it should
generate the same kind of interrupt as a DRAM ECC uncorrectable error
would for any given type of system.

-- 
							Greg A. Woods

+1 416 218-0098      VE3TCP      <gwoods@acm.org>      <robohack!woods>
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