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 void app_main()
17 {
18     printf("Hello world!\n");//串口打印
19 
20     /* Print chip information */
21     esp_chip_info_t chip_info;
22     esp_chip_info(&chip_info);
23     printf("This is ESP32 chip with %d CPU cores, WiFi%s%s, ",
24             chip_info.cores,
25             (chip_info.features & CHIP_FEATURE_BT) ? "/BT" : "",
26             (chip_info.features & CHIP_FEATURE_BLE) ? "/BLE" : "");
27 
28     printf("silicon revision %d, ", chip_info.revision);
29 
30     printf("%dMB %s flash\n", spi_flash_get_chip_size() / (1024 * 1024),
31             (chip_info.features & CHIP_FEATURE_EMB_FLASH) ? "embedded" : "external");
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 }

 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
38         io_conf.pull_down_en = 0;
39         //disable pull-up mode
40         io_conf.pull_up_en = 0;
41         //configure GPIO with the given settings
42         gpio_config(&io_conf);
43 
44 
45     printf("Hello world!\n");
46 
47     /* Print chip information */
48     esp_chip_info_t chip_info;
49     esp_chip_info(&chip_info);
50     printf("This is ESP32 chip with %d CPU cores, WiFi%s%s, ",
51             chip_info.cores,
52             (chip_info.features & CHIP_FEATURE_BT) ? "/BT" : "",
53             (chip_info.features & CHIP_FEATURE_BLE) ? "/BLE" : "");
54 
55     printf("silicon revision %d, ", chip_info.revision);
56 
57     printf("%dMB %s flash\n", spi_flash_get_chip_size() / (1024 * 1024),
58             (chip_info.features & CHIP_FEATURE_EMB_FLASH) ? "embedded" : "external");
59 
60    // for (int i = 10; i >= 0; i--)
61     while(1)
62     {
63        //printf("Restarting in %d seconds...\n", i);
64         vTaskDelay(1000 / portTICK_PERIOD_MS);//延时
65         printf("I am ZhiNianZhiZhan! \n");
66         printf("Try To Study ESP32\n");
67         gpio_set_level(GPIO_OUTPUT_IO_LED, i % 2);//将板子上的led灯不断翻转IO，使其闪烁
68         i++;
69         if(i>499)i=0;
70     }
71     //printf("Restarting now.\n");
72 
73    //fflush(stdout);
74     //esp_restart();//重启函数，屏蔽掉就不重启了。
75 }