Hi everyone,

I started to use the FreeRTOS on a ESP-WROOM-32 dev board.

I started with a simple code to avoid to debug other thing.

the code is :

#include <stdio.h>

#include "freertos/FreeRTOS.h"

#include "freertos/task.h"

#include "esp_system.h"

#include "driver/gpio.h"

#include "rom/gpio.h"

#include "nvs_flash.h"

#define BLINK_GPIO 23

void hello_task(void *pvParameter)

{

while(1)

{

printf("Hello world!\n");

vTaskDelay(100 / portTICK_PERIOD_MS);

}

}

void blinky(void *pvParameter)

{

gpio_pad_select_gpio(BLINK_GPIO);

/* Set the GPIO as a push/pull output */

gpio_set_direction(BLINK_GPIO, GPIO_MODE_OUTPUT);

while(1) {

/* Blink off (output low) */

gpio_set_level(BLINK_GPIO, 0);

vTaskDelay(1000 / portTICK_PERIOD_MS);

/* Blink on (output high) */

gpio_set_level(BLINK_GPIO, 1);

vTaskDelay(1000 / portTICK_PERIOD_MS);

}

}

void app_main()

{

xTaskCreate(&hello_task, "hello_task", 2048, NULL, 5, NULL);

xTaskCreate(&blinky, "blinky", 1024 ,NULL,5,NULL ); // no stack issue

//xTaskCreate(&blinky, "blinky", 512 ,NULL,5,NULL ); // stack issue

}

So, with the 512 bytes stack, I have this issue:

I (308) cpu\_start: Starting scheduler on PRO CPU.

I (0) cpu\_start: Starting scheduler on APP CPU.

Hello world!

Hello world!

Hello world!

Hello world!

Hello world!

Hello world!

Hello world!

Hello world!

Hello world!

Hello world!

\*\*\*ERROR\*\*\* A stack overflow in task blinky has been detected.

Backtrace: 0x40081af6:0x3ffb6fe0 0x400856f5:0x3ffb7000 0x4008832a:0x3ffb7020 0x40087213:0x3ffb70a0 0x400857f0:0x3ffb70c0 0x400857a2:0x3ff000dc |<-CORRUPTED

0x40081af6: panic\_abort at /home/dev/esp/esp-idf/components/esp\_system/panic.c:412

0x400856f5: esp\_system\_abort at /home/dev/esp/esp-df/components/esp\_system/esp\_system.c:135

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And the system restart. with this message, it look like the stack grow continuously but I don't understand why. technically, the blinky function should be always the same size.

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someone had an idea?

​

Thanks :)

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