Task handle usage in FreeRTOS - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a task and store its handle.

FreeRTOS

TaskHandle_t [1] = NULL;
xTaskCreate(taskFunction, "Task1", 1000, NULL, 1, &handle);

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Ahandle

BtaskHandle

Ctask1Handle

DxHandle

Attempts:

3 left

💡 Hint

Common Mistakes

Using a variable name not matching the one passed to xTaskCreate.

Not declaring the handle variable before use.

The variable 'handle' is used to store the task handle when creating a task.

2fill in blank

medium

Complete the code to delete a task using its handle.

FreeRTOS

vTaskDelete([1]);

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ANULL

BxHandle

Chandle

DtaskHandle

Attempts:

3 left

💡 Hint

Common Mistakes

Passing NULL to vTaskDelete deletes the current task, not the target task.

Using an undefined variable.

To delete a specific task, pass its handle to vTaskDelete.

3fill in blank

hard

Fix the error in the code to suspend a task using its handle.

FreeRTOS

vTaskSuspend([1]);

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AtaskHandle

Bhandle

CNULL

DxHandle

Attempts:

3 left

💡 Hint

Common Mistakes

Passing NULL instead of the task handle.

Using a different variable name than the one storing the handle.

The correct handle variable 'handle' must be passed to vTaskSuspend to suspend the task.

4fill in blank

hard

Fill both blanks to resume a suspended task using its handle and check if the handle is valid.

FreeRTOS

if ([1] != NULL) {
    vTaskResume([2]);
}

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Ahandle

BtaskHandle

CNULL

DxHandle

Attempts:

3 left

💡 Hint

Common Mistakes

Using different variables for the check and resume call.

Not checking if the handle is NULL before resuming.

Check if 'handle' is not NULL before resuming the task using the same handle.

5fill in blank

hard

Fill all three blanks to create a task, store its handle, and then delete it.

FreeRTOS

TaskHandle_t [1] = NULL;
xTaskCreate(taskFunction, "Task2", 1000, NULL, 1, &[2]);
vTaskDelete([3]);

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Ahandle2

DtaskHandle2

Attempts:

3 left

💡 Hint

Common Mistakes

Using different variable names for declaration, creation, and deletion.

Not passing the address of the handle variable to xTaskCreate.

Use the same variable 'handle2' to declare, pass to xTaskCreate, and delete the task.