[Solved] What does the FreeRTOS scheduler do when the tick timer interrupt occurs? — Ans: It checks if a higher priority task is ready to run and switches context if... | FreeRTOS

FreeRTOS - RTOS Fundamentals

What does the FreeRTOS scheduler do when the tick timer interrupt occurs?

AIt disables the tick timer until manually restarted.

BIt stops all tasks and resets the system.

CIt increases the tick count but does not affect task switching.

DIt checks if a higher priority task is ready to run and switches context if needed.

Step-by-Step Solution

Solution:

Step 1: Understand the tick timer interrupt role
The tick timer interrupt signals the scheduler to check task states.
Step 2: Scheduler action on tick interrupt
The scheduler compares task priorities and switches context if a higher priority task is ready.
Final Answer:
It checks if a higher priority task is ready to run and switches context if needed. -> Option D
Quick Check:
Scheduler action on tick interrupt = It checks if a higher priority task is ready to run and switches context if needed. [OK]

Quick Trick: Tick interrupt triggers scheduler to switch tasks if needed [OK]

Common Mistakes:

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