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Task priorities

Question asked by Matthew Kendall on Apr 1, 2014
Latest reply on Apr 2, 2014 by Martin Latal

AN3905 ("Writing Your First MQX Application") has this advice on choosing priorities for user tasks:

"Do not assign higher priorities (0 - 8) to user tasks. Those are assigned to kernel and other important tasks."

I cannot find this limit anywhere else in the official MQX documentation. Neither the MQX Getting Started guide, nor the MQX User's Guide, nor the MQX Reference Manual have any mention of priorities reserved for the system, that I can find.


Is AN3905 correct; are some priorities reserved for system tasks, and if so is there a definitive list of these tasks and their priorities? Or is this advice incorrect or outdated in some way?