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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: Compiler doesn't respect 'Size for atomic object
Date: Thu, 21 Dec 2017 22:02:05 +0000
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Date: 2017-12-21T22:02:05+00:00
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Robert Eachus <rieachus@comcast.net> writes:

> I am certainly not an expert on the Cortex-M CPUs, but as I read the
> documentation, the STIR is write-only, and the upper 24-bits of the
> value written there are ignored.

It turns out that declaring NVIC_STIR as Unsigned_32 and writing

      NVIC_STIR := 16#ffff_ff00# or Interfaces.Unsigned_32 (IRQ);

doesn't generate an interrupt.