You want to monitor stack usage of multiple tasks and log a warning if any task's stack high water mark falls below 20 words. Which approach is best?

hard📝 Best Practice Q15 of 15

FreeRTOS - Debugging and Monitoring

AOnly check the current task's stack high water mark using NULL parameter

BIncrease all task stack sizes to 20 words to avoid overflow

CPeriodically call <code>uxTaskGetStackHighWaterMark</code> for each task handle and check if value < 20

DUse <code>vTaskDelete</code> to remove tasks with low stack

Step-by-Step Solution

Solution:

Step 1: Understand monitoring multiple tasks
To monitor multiple tasks, you must check each task's stack high water mark individually using their task handles.
Step 2: Implement threshold check
Calling uxTaskGetStackHighWaterMark for each task and comparing to 20 words allows detecting low stack and logging warnings.
Final Answer:
Periodically call uxTaskGetStackHighWaterMark for each task handle and check if value < 20 -> Option C
Quick Check:
Check each task's high water mark against threshold [OK]

Quick Trick: Check each task's high water mark, compare to threshold [OK]

Common Mistakes:

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