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Chapter 4
4-4 SUMMARY
μC/OS-III needs to access critical sections of code, which it protects by either disabling
interrupts ( OS_CFG_ISR_POST_DEFERRED_EN set to 0 in OS_CFG.H ), or locking the scheduler
( OS_CFG_ISR_POST_DEFERRED_EN set to 1 in OS_CFG.H ).
The application code must not use:
OS_CRITICAL_ENTER()
OS_CRITICAL_EXIT()
OS_CRITICAL_EXIT_NO_SCHED()
When setting CPU_CFG_TIME_MEAS_INT_DIS_EN in CPU_CFG.H , μC/CPU measures the
maximum interrupt disable time. There are two values available, one for the global
maximum and one for each task.
When setting OS_CFG_SCHED_LOCK_TIME_MEAS_EN to 1 in OS_CFG.H , μC/OS-III will
measure the maximum scheduler lock time.
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