Monitoring Memory Usage in ESP32 with FreeRTOS

Introduction:

In a previous project, I used the ESP8266 with FreeRTOS and wanted to check the memory usage. However, after much effort, I was unable to succeed and had to temporarily give up. Now, while developing with the ESP32, I also need to monitor memory usage, primarily to test and monitor memory changes to prevent memory leaks.

1. First, enable this feature

2. Method One

// First, create a task to handle this operation separately
xTaskCreate(state_task, "state_task", 4096, NULL, 6, NULL);

// Callback function
static void state_task(void *pvParameters)
{
    static char InfoBuffer[512] = {0};
    while (1)
    {
        vTaskList((char *) &InfoBuffer);
        printf("Task Name      Task State Priority   Remaining Stack Task ID\r\n");
        printf("\r\n%s\r\n", InfoBuffer);
        vTaskDelay(2000 / portTICK_PERIOD_MS);
    }
}

• Effect Diagram

3. Method Two

// First, create a task to handle this operation separately
xTaskCreate(state_task, "state_task", 4096, NULL, 6, NULL);

// Callback function
static void state_task(void *pvParameters)
{
    static char InfoBuffer[512] = {0};
    while (1)
    {
        vTaskGetRunTimeStats((char *) &InfoBuffer);
        printf("\r\nTask Name       Run Count         Usage Rate\r\n");
        printf("\r\n%s\r\n", InfoBuffer);
        vTaskDelay(2000 / portTICK_PERIOD_MS);
    }
}

• Effect Diagram

4. Analyzing the Possible Reason for the Previous ESP8266 Failure: It Might Be Due to Not Setting the Parameter in make menuconfig