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[ts-7000] Re: IRQ on DIO with TS-7400

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Subject: [ts-7000] Re: IRQ on DIO with TS-7400
From: "Michael Matthews" <>
Date: Mon, 17 Sep 2007 05:48:28 -0000
--- In  Colin Copeland <> wrote:
>
> On May 31, 2007, at 12:29 AM, Kevin Cozens wrote:
> > Thanks for the pointer to the eeapnode kernel module. It saved me a  
> > lot of work. I just needed some minor changes to the init/de-init  
> > routines and a change to the IRQ number. I have only done one test  
> > but I received 81 interrupts while pulsing pin 8 of the DIO1 header  
> > on a TS-7250.
> >
> > I noticed one thing in the eeapnode source file which you seem to  
> > have missed. The interrupt handler in the file is not clearing the  
> > IRQ. A requirement of the code in an interrupt handlers is to clear  
> > the source of the interrupt request. If you don't do that, you will  
> > get one interrupt but none after that.
> 
> You're right. Sorry about that, the pointer to that CVS revision is  
> slightly outdated. We've since added routines to clear the interrupt.  
> Here's a link to the file in CVS:
> http://cs.earlham.edu/~eeap/cvsweb/cvsweb.cgi/eeapnode/module/eeapnode.c
> 
> Glad to see the code was useful,
>    colin
>

Colin,
Thanks for making the TS7400 IRQ module code available. Everything
makes sense except for your use of DIO_03 to reset and enable the
interrupt. Looked through all my docs. What am I missing?
-Mike




 
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