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Not atomic instructions

Posted by Willem on February 16, 2009
How should I work with non-atomic instructions? I`m on the PIC32 and if, for example, I want to set or clear an port then it is not an atomic instruction.

How do I solve this? Should i place every time i want to change a port a taskEnterCritical / exit?

There is a high possibility that another task also want to change something else on a port, sometimes.

RE: Not atomic instructions

Posted by Dave on February 16, 2009
The PIC32 IO ports have separate set and clear registers that can be used safely without mutual exclusion because they do not require a read modify write type access.


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