CMSIS-RTOS2  Version 2.0.0
Real-Time Operating System: API and RTX Reference Implementation
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Calls from Interrupt Service Routines

The following CMSIS-RTOS2 functions can be called from threads and Interrupt Service Routines (ISR):

Functions that cannot be called from an ISR are verifying the interrupt status and return, in case they are called from an ISR context, the status code osErrorISR. In some implementations, this condition might be caught using the HARD FAULT vector.