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From: Rick Stikkers <rstikkers@telis.org>
Subject: Re: Interrupt Handlers using GNAT-VxWorks?
Date: 1999/10/14
Message-ID: <38066C52.AE47DC6D@telis.org>#1/1
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I was able to attach to an interrupt using a task entry.  This code worked
with the Verdix Ada-83 cross compiler running in SUNOS 4.1.4 with a target of
a VME 68040 processor.  Hopefully it will work for you.

    Rick

 clock_interrupt_vector : constant := 16#44#;
 task timer_tick is
      entry start;
      entry tick_isr;
      for tick_isr use at SYSTEM.address'ref( clock_interrupt_vector );
      pragma passive( interrupt, 16#0700# );
   end timer_tick;


John Arnsparger wrote:

> I am trying to attach an interrupt handler (procedure) to Vector #29
> (decimal) on the mvme167
> board using Ada95 "protected" constructs.  I have tried
> Ada.Interrupts.Attach_Handler,
> which results in "Program_Error: Trying to overwrite a static Interrupt
> Handler" with a dynamic handler".
>
> I have also tried the "pragma Attach_Handler", which produces a run-time
> error saying
> "Unitialized Interrupt".
>
> Both of these were declared in package bodies.
>
> Does anyone have any helpful hints or examples of successfully doing this
> with GNAT-Works m68K?  Or pointers to better references than the LRM? :-)
>
> Thanks.
>
> John M. Arnsparger
> Lockheed Martin Space Operations
>  e-mail john.arnsparger1@jsc.nasa.gov
>  Phone (281) 244 9693
>  Fax (281) 244 9681