esp idf c 2b 2b

1#include <stdio.h>
2#include "freertos/FreeRTOS.h"
3#include "freertos/task.h"
4#include "esp_system.h"
5#include "esp_spi_flash.h"
6
7extern "C" {
8    void app_main(void);
9}
10
11void app_main()
12{
13    printf("Hello PlatformIO!\n");
14}
15