[Solved] Why might a low priority task never get CPU time in a FreeRTOS system? — Ans: Because higher priority tasks are always ready and preempt it | FreeRTOS

FreeRTOS - Task Scheduling

Why might a low priority task never get CPU time in a FreeRTOS system?

ABecause the scheduler only runs high priority tasks

BBecause higher priority tasks are always ready and preempt it

CBecause low priority tasks are deleted automatically

DBecause the scheduler runs tasks randomly

Step-by-Step Solution

Solution:

Step 1: Understand preemption in FreeRTOS
Higher priority tasks preempt lower priority ones if they are ready.
Step 2: Apply to low priority task scenario
If high priority tasks are always ready, low priority tasks get no CPU time.
Final Answer:
Because higher priority tasks are always ready and preempt it -> Option B
Quick Check:
Preemption blocks low priority tasks if high priority ready [OK]

Quick Trick: Low priority tasks starve if higher priorities always ready [OK]

Common Mistakes:

Master "Task Scheduling" in FreeRTOS

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Why might a low priority task never get CPU time in a FreeRTOS system?