ESP32 Forum

Posted: **Mon Jan 29, 2024 1:57 pm**

Just started to contact ESP32 also please everyone Pointers.
I tried to create 3 tasks. But no matter how hard you try, there's always a task that's not being performed.
For example, the following code, why not print "sweetHomeTask", which is very confusing to me.
The default freertos configuration is used (idf.py menuconfig)

Code: [Select all] [Expand/Collapse]

#include <iostream>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
 
#include "peripheral_init.h"
#include "SweetHome.h"
#include "mpu6050_driver.h"
 
#include <esp_system.h>
 
using namespace std;
 
static TaskHandle_t gyroTaskHandle;
static TaskHandle_t lifeSupportHandle;
static TaskHandle_t sweetHomeHandle;
 
// SemaphoreHandle_t lvglSemaphore = NULL;
 
static void gyroTask(void *pvParameters) {
    mpu6050_driver_init();
    
    for(;;) {
        mpu6050_driver_get_data();
        vTaskDelay(pdMS_TO_TICKS(20));
    }
}
 
static void sweetHomeTask(void *pvParameters) {
    printf("sweetHomeTask\n");
    for(;;) {
        vTaskDelay(pdMS_TO_TICKS(30));
        printf(">>>>>>>>>>>>>>>>>>>%d\n", xPortGetCoreID());
        // lv_timer_handler();
    }
}
 
static void lifeSupportTask(void *pvParameters) {
    xTaskCreate(sweetHomeTask, "sweetHome", 1024*50, NULL, 10, &sweetHomeHandle);
    for(;;) {
        vTaskDelay(pdMS_TO_TICKS(1000));
        // lv_timer_handler();
        lv_tick_inc(5);
        printf("================%d\n", xPortGetCoreID());
    }
}
 
extern "C" void app_main(void)
{
 
    peripheral_lcd_init();
 
    xTaskCreatePinnedToCore(gyroTask, "gyro", 1024*50, NULL, 5, &gyroTaskHandle, 1);
    xTaskCreatePinnedToCore(lifeSupportTask, "lifeSupport", 1024*50, NULL, 6, &lifeSupportHandle, 0);
    
    
    printf("end free heap: %ld\n", esp_get_free_heap_size()); // 8439892
 
}
 

GeSHi © Codebox Plus Extension

Posted: **Tue Jan 30, 2024 12:04 am**

Isn't it simply that you're missing the first bit of startup chatter and as such aren't seeing that printf?

Posted: **Tue Jan 30, 2024 2:35 am**

It feels like the sweetHomeTask is not being created
While trying to create a task like this in the app_main function, task1 runs normally on core 0, but task2 and task3 always run the previous one on core 1

Code: [Select all] [Expand/Collapse]

xTaskCreatePinnedToCore(&Task1, "Task1", 1024*50, NULL, configMAX_PRIORITIES, &task1Handle, 0);
xTaskCreate(&Task2, "Task2", 1024*50, NULL, configMAX_PRIORITIES, &task2Handle);
xTaskCreatePinnedToCore(&Task3, "Task3", 1024*50, NULL, configMAX_PRIORITIES, &task3Handle, 1);

GeSHi © Codebox Plus Extension

Posted: **Tue Jan 30, 2024 4:00 am**

Well, you can check that. xTaskCreate and friends give you a return code; you can check it to see if the task creation failed and why. You're simply throwing away those return codes in your code, though; I'd change that first.

Posted: **Tue Jan 30, 2024 5:40 am**

Thanks to you my friends, viewing the return value has been a great help. I have determined that the cause is a stack space allocation problem. But I have one more question.
The chip I use is ESP32-S3-WROOM-1U(N16R8), so how to check the size of DRAM and IRAM

Posted: **Tue Jan 30, 2024 10:25 am**

https://docs.espressif.com/projects/esp ... e8uint32_t

As a hint: Minimum permissible stack size for a task is about 1.5kb, default is about 3.5kb, which is enough for many tasks. 8-16kb is sufficient for almost all tasks if you don't use local variables/arrays excessively. Conversely, you may want to avoid using local variables/arrays of more than a few hundred bytes and consider using the heap for bigger things (buffers,...).

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