UUID

#include <stdio.h>

#include "freertos/FreeRTOS.h"

#include "freertos/task.h"

#include "esp_system.h"

#include "esp_spi_flash.h"

#include "driver/gpio.h"



char *get_device_id()

{

    uint8_t mac_addr[6];

    char *id = (char*)malloc((sizeof(char)*(6*2))+1);

    if (id == NULL) return NULL;



    esp_read_mac(mac_addr, ESP_MAC_WIFI_STA);



    for (int i=0; i<6; i++) {

        snprintf(id+(i*2), 3, "%02X", mac_addr[i]);

    }



    return id;

}



void app_main()

{

    printf("Program: Unikatny identifikator cipu ESP8266\n");



    char *uuid = get_device_id();

    printf("UUID: %s \n", uuid);

    free(uuid);



    while (1) {

        vTaskDelay(1000 / portTICK_PERIOD_MS);

    }



}