Health monitoring and heartbeat in FreeRTOS - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a heartbeat task that toggles an LED.

FreeRTOS

void HeartbeatTask(void *pvParameters) {
    for(;;) {
        ToggleLED();
        vTaskDelay([1]);
    }
}

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

A100 / portTICK_PERIOD_MS

B10 / portTICK_PERIOD_MS

C1000 / portTICK_PERIOD_MS

D5000 / portTICK_PERIOD_MS

Attempts:

3 left

💡 Hint

Common Mistakes

Using too long or too short delay causing no visible heartbeat.

The heartbeat task should delay for 100 milliseconds to toggle the LED regularly.

2fill in blank

medium

Complete the code to initialize the watchdog timer with a timeout.

FreeRTOS

void InitWatchdog() {
    Watchdog_Config config = {
        .timeout = [1]
    };
    Watchdog_Init(&config);
}

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

A5000

B20000

C1000

D10000

Attempts:

3 left

💡 Hint

Common Mistakes

Setting timeout too short causing frequent resets.

The watchdog timeout is set to 10000 milliseconds (10 seconds) to allow enough time for system checks.

3fill in blank

hard

Fix the error in the watchdog refresh function to prevent system reset.

FreeRTOS

void RefreshWatchdog() {
    [1]();
}

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

AWatchdog_Feed

BWatchdog_Reset

CWatchdog_Refresh

DWatchdog_Kick

Attempts:

3 left

💡 Hint

Common Mistakes

Using a non-existent function name causing compile errors.

The correct function to refresh the watchdog timer is Watchdog_Feed().

4fill in blank

hard

Fill both blanks to create a health check task that signals system status.

FreeRTOS

void HealthCheckTask(void *pvParameters) {
    for(;;) {
        if(SystemIsHealthy()) {
            SignalStatus([1]);
        } else {
            SignalStatus([2]);
        }
        vTaskDelay(1000 / portTICK_PERIOD_MS);
    }
}

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

ALED_GREEN

BLED_RED

CLED_BLUE

DLED_YELLOW

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping LED colors causing confusing signals.

Use LED_GREEN to indicate healthy status and LED_RED for unhealthy status.

5fill in blank

hard

Fill all three blanks to create a dictionary mapping task names to their heartbeat intervals.

FreeRTOS

const TaskHeartbeatConfig taskHeartbeats = {
    [1]: [2],
    [3]: 500
};

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

A"SensorTask"

B1000

C"CommTask"

D2000

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing keys and values or using wrong data types.

SensorTask has a heartbeat interval of 2000 ms, CommTask has 500 ms.