NMI priority

[gbigden]

Posted on September 16, 2015 at 12:29

Looking at the reference manual it shows the priority as -2 What does this mean - is it high or low? and can code running under the NMI be interrupted?

#interrupts

[Danish1]

Posted on September 16, 2015 at 13:29

The following comes from the ''cortex architecture reference manual'' ARM DDI 0405C which is available from arm themselves, and ST might have a link as well:

NMI priority is very high (-2). It an only be interrupted by Reset (priority -3)NMI is even higher priority than HardFault (-1) (that's something I didn't know but I guess it makes sense).Hope this helps,Danish

[gbigden]

Posted on September 16, 2015 at 14:21

Thanks. When a routine is running under NMI can it be interrupted?

[Tesla DeLorean]

Posted on September 16, 2015 at 17:25

Only by a reset...