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

To: Kevin Cozens <>
Subject: Re: [ts-7000] IRQ on DIO with TS-7400
From: Colin Copeland <>
Date: Fri, 1 Jun 2007 10:13:21 -0400
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slightly outdated.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



 
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