Why tasks are the building blocks in FreeRTOS - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a FreeRTOS task that runs the function TaskFunction.

FreeRTOS

xTaskCreate([1], "Task1", 1000, NULL, 1, NULL);

Drag options to blanks, or click blank then click option'

AvTaskStartScheduler

BTaskFunction

CxQueueCreate

DvTaskDelete

Attempts:

3 left

💡 Hint

Common Mistakes

Using scheduler or queue functions instead of the task function name.

Passing NULL instead of the task function.

The xTaskCreate function needs the task function name as its first argument to create a task.

2fill in blank

medium

Complete the code to start the FreeRTOS scheduler after creating tasks.

FreeRTOS

[1]();

Drag options to blanks, or click blank then click option'

AvTaskStartScheduler

BxTaskCreate

CvTaskDelay

DxQueueSend

Attempts:

3 left

💡 Hint

Common Mistakes

Calling task creation functions instead of starting the scheduler.

Using delay or queue functions here.

The vTaskStartScheduler function starts the FreeRTOS scheduler, which begins running tasks.

3fill in blank

hard

Fix the error in the task function prototype to match FreeRTOS requirements.

FreeRTOS

void [1](void *pvParameters) { /* task code */ }

Drag options to blanks, or click blank then click option'

ATaskFunction

BTaskFunction(void)

CTaskFunction(int param)

DTaskFunction()

Attempts:

3 left

💡 Hint

Common Mistakes

Omitting the parameter or using wrong parameter types.

Using empty parentheses which is invalid in C for this case.

FreeRTOS task functions must have the prototype void TaskName(void *pvParameters).

4fill in blank

hard

Fill both blanks to create a task that runs Task1Function with priority 2.

FreeRTOS

xTaskCreate([1], "Task1", 1000, NULL, [2], NULL);

Drag options to blanks, or click blank then click option'

ATask1Function

B1

C2

DvTaskStartScheduler

Attempts:

3 left

💡 Hint

Common Mistakes

Using the scheduler function as a task function.

Setting priority to 1 instead of 2.

The first blank is the task function name. The second blank is the priority number, here 2.

5fill in blank

hard

Fill both blanks to create a dictionary of task names and their priorities for tasks with priority greater than 1.

FreeRTOS

task_priorities = { [2]: [1] for [3] in tasks if tasks[[3]] > 1}

Drag options to blanks, or click blank then click option'

A{

Btasks[task]

Ctask

D}

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting the curly braces.

Using wrong variable names or missing the condition.

This is a dictionary comprehension. { starts it, task is the key, and tasks[task] is the value.