FreeRTOS - Task Scheduling
Consider two tasks in FreeRTOS: TaskA with priority 2 and TaskB with priority 3. TaskA is running when TaskB becomes ready. What will be the output if both tasks print their names when running?
Consider two tasks in FreeRTOS: TaskA with priority 2 and TaskB with priority 3. TaskA is running when TaskB becomes ready. What will be the output if both tasks print their names when running?
medium📝 Predict Output Q13 of 15
Step-by-Step Solution
Solution:
Step 1: Identify task priorities and running state
TaskA has priority 2 and is running; TaskB has higher priority 3 and becomes ready.Step 2: Apply preemptive scheduling rules
TaskB will preempt TaskA immediately and run first, printing its name.Final Answer:
TaskB prints immediately, preempting TaskA. -> Option BQuick Check:
Higher priority task runs first = TaskB prints first [OK]
Quick Trick: Higher priority task prints first by preempting lower priority [OK]
Common Mistakes:
- Assuming lower priority task finishes before switching
- Thinking tasks run at the same time
- Ignoring task priorities
Master "Task Scheduling" in FreeRTOS
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