Allowed system calls in ISRs

Ingolf Steinbach Ingolf.Steinbach at
Mon May 30 08:58:49 UTC 2005

On Friday 27 May 2005 15:23, Joel Sherrill <joel at> wrote:
> That should be OK.  It doesn't allocate memory or block.  Those
> are the two biggest factors.

So, the write operation for the setting of the new vector is
atomic or protected against parallel access? Is an ISR allowed
to change the vector for "its own" interrupt?

Kind regards

Ingolf Steinbach                       Jena-Optronik GmbH
ingolf.steinbach at       ++49 3641 200-147
PGP: 0x7B3B5661  213C 828E 0C92 16B5  05D0 4D5B A324 EC04

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