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Is there ANY Cortex core that supports reentrant interrupts?

Note: This was originally posted on 28th February 2011 at http://forums.arm.com

For some (external to me) reason I am stuck with the Cortex but trying to find work around to my software issues with the lack of reentrant interrupts in CM3. Does CM4 support reentrancy? Or maybe CM0? Anything at all?
Please help!


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  • Note: This was originally posted on 28th February 2011 at http://forums.arm.com

    Presumably, you are talking about Cortex-M processors (v6-M, v7-M architectures). As far as your preferred interrupt mechanism is concerned, I am afraid you are out of luck with these.  All other Cortex-brand processors (v7-R, v7-A) come with essentially the same interrupt mechanism that ARM7 has, too.

    Regards
    Marcus
Reply
  • Note: This was originally posted on 28th February 2011 at http://forums.arm.com

    Presumably, you are talking about Cortex-M processors (v6-M, v7-M architectures). As far as your preferred interrupt mechanism is concerned, I am afraid you are out of luck with these.  All other Cortex-brand processors (v7-R, v7-A) come with essentially the same interrupt mechanism that ARM7 has, too.

    Regards
    Marcus
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