uxTaskPriorityGet() for reading priority in FreeRTOS - Mini Project: Build & Apply

Using uxTaskPriorityGet() to Read Task Priority in FreeRTOS

📖 Scenario: You are working on a FreeRTOS embedded system project. You want to check the priority of a specific task to understand how your tasks are scheduled.

🎯 Goal: Learn how to use the uxTaskPriorityGet() function to read and display the priority of a FreeRTOS task.

📋 What You'll Learn

Create a FreeRTOS task handle variable named myTaskHandle.

Create a variable named taskPriority to store the priority.

Use uxTaskPriorityGet() with myTaskHandle to get the priority.

Print the priority using printf().

💡 Why This Matters

🌍 Real World

Reading task priorities helps you understand and debug how your embedded system schedules different tasks.

💼 Career

Embedded systems developers often need to manage and check task priorities to ensure real-time performance and responsiveness.

1

Create a FreeRTOS task handle variable

Create a variable called myTaskHandle of type TaskHandle_t and set it to NULL.

FreeRTOS

TaskHandle_t myTaskHandle = NULL;
// Your code here

Need a hint?

This variable will hold the handle of the task whose priority you want to read.

2

Create a variable to store the task priority

Create a variable called taskPriority of type UBaseType_t to store the task priority.

FreeRTOS

TaskHandle_t myTaskHandle = NULL;
UBaseType_t taskPriority;
// Your code here

Need a hint?

This variable will hold the priority value returned by uxTaskPriorityGet().

3

Use uxTaskPriorityGet() to get the task priority

Assign the result of uxTaskPriorityGet(myTaskHandle) to the variable taskPriority.

FreeRTOS

TaskHandle_t myTaskHandle = NULL;
UBaseType_t taskPriority;
// Get the priority of the task
// Your code here

Need a hint?

This function returns the priority of the task whose handle is myTaskHandle.

4

Print the task priority

Use printf() to display the text "Task priority is: " followed by the value of taskPriority.

FreeRTOS

TaskHandle_t myTaskHandle = NULL;
UBaseType_t taskPriority;
taskPriority = uxTaskPriorityGet(myTaskHandle);
// Print the task priority
// Your code here

Need a hint?

The printed priority will be 0 because myTaskHandle is NULL (no task assigned).