configASSERT() for development debugging in FreeRTOS - Mini Project: Build & Apply

Using configASSERT() for Development Debugging in FreeRTOS

📖 Scenario: You are developing a FreeRTOS application for an embedded device. You want to catch programming errors early by using configASSERT() to check assumptions during development.

🎯 Goal: Learn how to enable and use configASSERT() in FreeRTOS to detect errors during development by writing a simple program that triggers an assertion failure when a condition is false.

📋 What You'll Learn

Create a macro configASSERT() that halts the program when a condition is false

Define a variable testValue with a specific value

Use configASSERT() to check if testValue equals the expected value

Print a message indicating success if the assertion passes

💡 Why This Matters

🌍 Real World

Using <code>configASSERT()</code> helps embedded developers find bugs early by stopping the program when assumptions fail during development.

💼 Career

Many embedded systems jobs require debugging skills using assertions to ensure code correctness and reliability.

1

Define the configASSERT() macro

Define the macro configASSERT() that takes a condition and enters an infinite loop if the condition is false. Use do { if( (condition) == 0 ) { for(;;); } } while(0) as the macro body.

FreeRTOS

# Define the configASSERT() macro
// Your code here

Need a hint?

This macro checks if the condition is false (zero). If so, it loops forever to halt the program.

2

Create a variable testValue with value 10

Create an integer variable called testValue and set it to 10.

FreeRTOS

#define configASSERT( x ) do { if( ( x ) == 0 ) { for( ;; ); } } while( 0 )

// Create int variable testValue and set to 10
// Your code here

Need a hint?

Use int testValue = 10; to create the variable.

3

Use configASSERT() to check testValue == 10

Use configASSERT() to check that testValue is equal to 10. Write configASSERT(testValue == 10);.

FreeRTOS

#define configASSERT( x ) do { if( ( x ) == 0 ) { for( ;; ); } } while( 0 )

int testValue = 10;

// Use configASSERT to check testValue == 10
// Your code here

Need a hint?

Write configASSERT(testValue == 10); to check the value.

4

Print success message after assertion

Add #include <stdio.h> at the top. Then write printf("Test passed: testValue is 10\n"); after the configASSERT() line to print a success message.

FreeRTOS

#include 
#define configASSERT( x ) do { if( ( x ) == 0 ) { for( ;; ); } } while( 0 )

int testValue = 10;

configASSERT(testValue == 10);

// Print success message
// Your code here

Need a hint?

Use printf("Test passed: testValue is 10\n"); inside main() to show the message.