Luat_ESP32_S3_Playground/main/hello_world_main.c

#include <inttypes.h>
#include <stdio.h>

#include "freertos/FreeRTOS.h"
#include "freertos/task.h"

void app_main(void) {
    printf("Hello world!\n");

    for (;;) {
        vTaskSuspend(NULL);
    }
}