32
33 for （int i = 10; i 》= 0; i--） {
34 printf（“Restarting in %d seconds.。。\n”， i）;
35 vTaskDelay（1000 / portTICK_PERIOD_MS）;
36 }
37 printf（“Restarting now.\n”）;
38 fflush（stdout）;
39 esp_restart（）;//重启选项
40 }
参考example下的GPIO例子，简单修改如下：
1 * Hello World Example
2
3 This example code is in the Public Domain （or CC0 licensed， at your option.）
4
5 Unless required by applicable law or agreed to in writing， this
6 software is distributed on an “AS IS” BASIS， WITHOUT WARRANTIES OR
7 CONDITIONS OF ANY KIND， either express or implied.
8 */
9 #include 《stdio.h》
10 #include “freertos/FreeRTOS.h”
11 #include “freertos/task.h”
12 #include “esp_system.h”
13 #include “esp_spi_flash.h”
14
15
16 #include 《string.h》
17 #include 《stdlib.h》
18 #include “freertos/FreeRTOS.h”
19 #include “freertos/task.h”
20 #include “freertos/queue.h”
21 #include “driver/gpio.h”
22
23 #define GPIO_OUTPUT_IO_LED 2
24 #define GPIO_OUTPUT_PIN_SEL （（1《《GPIO_OUTPUT_IO_LED） ）
25 int i=0;
26 void app_main（）
27 {
28
29 //初始化GPIO引脚，直接复制自GPIO例子
30 gpio_config_t io_conf;
31 //disable interrupt
32 io_conf.intr_type = GPIO_PIN_INTR_DISABLE;
33 //set as output mode
34 io_conf.mode = GPIO_MODE_OUTPUT;
35 //bit mask of the pins that you want to set，e.g.GPIO2
36 io_conf.pin_bit_mask = GPIO_OUTPUT_PIN_SEL;
37 //disable pull-down mode
