[Solved] Given this FreeRTOS idle hook code:void vApplicationIdleHook(void) { vTaskDelay(1000); printf("Idle hook delay\n");}What will happen when this runs? | FreeRTOS

FreeRTOS - Task Scheduling

Given this FreeRTOS idle hook code:

void vApplicationIdleHook(void) {
    vTaskDelay(1000);
    printf("Idle hook delay\n");
}

What will happen when this runs?

AIdle hook delays 1 second and prints message repeatedly

BSystem will crash or behave unexpectedly due to calling vTaskDelay in idle hook

CIdle hook runs without delay and prints immediately

DIdle hook disables the scheduler

Step-by-Step Solution

Solution:

Step 1: Recall restrictions on idle hook
Calling blocking functions like vTaskDelay inside the idle hook is not allowed and causes issues.
Step 2: Analyze the effect
Using vTaskDelay in idle hook can cause system crash or unexpected behavior.
Final Answer:
System will crash or behave unexpectedly due to calling vTaskDelay in idle hook -> Option B
Quick Check:
Blocking calls in idle hook cause errors = A [OK]

Quick Trick: Never call blocking functions like vTaskDelay inside idle hook [OK]

Common Mistakes:

Master "Task Scheduling" in FreeRTOS

9 interactive learning modes - each teaches the same concept differently

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