FreeRTOS - Task Priorities
What is wrong with this priority assignment if configMAX_PRIORITIES is 3?
vTaskPrioritySet(taskHandle, 3);What is wrong with this priority assignment if configMAX_PRIORITIES is 3?
medium📝 Debug Q14 of 15
Step-by-Step Solution
Solution:
Step 1: Check allowed priority range
Priorities go from 0 to configMAX_PRIORITIES - 1, so 0 to 2 here.Step 2: Validate assigned priority
Priority 3 is outside this range and invalid.Final Answer:
Priority 3 is out of range; max is 2 -> Option BQuick Check:
Max priority = 2, 3 is invalid [OK]
Quick Trick: Priority must be less than configMAX_PRIORITIES [OK]
Common Mistakes:
- Using configMAX_PRIORITIES as a valid priority
- Assigning negative priorities
- Assuming priority zero is highest
Master "Task Priorities" in FreeRTOS
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