Hi Richard ! I got an assertion when I forgot to set an interrupt's priority (thanks for that!).
I set it to configMAXSYSCALLINTERRUPT_PRIORITY and the code no longer asserts.
However, the comments in FreeRTOS and documentation are approximately as follows:
// ISRs using FreeRTOS APIs (for example, USB CDC driver uses FreeRTOS queues) must have priority
// logically lower (numerically higher) than configMAXSYSCALLINTERRUPTPRIORITY.
// For an interrupt priority to be lower than configMAXSYSCALLINTERRUPTPRIORITY,
// it must be numerically higher than configMAXSYSCALLINTERRUPT_PRIORITY, because on the
// ARM Cortex-M3 numerically low priority values represent logically high interrupt priorities.
Should the comments/documentation read "less than or equal to"?
Or should the code be asserting if I do the following?
NVICSetPriority (USBIRQn, configMAXSYSCALLINTERRUPT_PRIORITY);
Thanks as always,
Best Regards, Dave
You are right, it should say less that or equal to.