Date: Mon, 15 Mar 1999 20:07:59 +0100 (CET) From: Søren Schmidt <sos@freebsd.dk> To: smp@csn.net (Steve Passe) Cc: hackers@FreeBSD.ORG Subject: Re: power-off without halt Message-ID: <199903151907.UAA21303@freebsd.dk> In-Reply-To: <199903151655.JAA28147@Ilsa.StevesCafe.com> from Steve Passe at "Mar 15, 1999 9:55:54 am"
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It seems Steve Passe wrote: > Hi, > > We are looking at using FreeBSD as an "embedded OS" inside a line > of instruments we are building. I think I have a handle on all the > issues except how to cleanly handle shutdown where there is no > console, and thus no way to send a 'halt' command. The requirement > is that the user can merely turn off the power, nothing more required. > > I can modify the disk setup, kernel/util code as needed, I just need some > idea for a workable solution. Has anyone delt with this problem before? Use a small circuit that gets the power off switch signal, pulls NMI which shutdown the system, and after a sufficient timemout pulls the power.. Nice and easy, and if the system hangs it will just be shut off after the timeout.... KISS at work again :) -Søren To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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