1 /*
2 注意：
3 有的库需要自己安装或更新
4 */
5
6 #include <Arduino.h>
7 #include <ESP8266WiFi.h>
8 #include <ESP8266WiFiMulti.h>
9 #include <ESP8266HTTPClient.h>
10 #include <WiFiClient.h>
11 #include <ArduinoJson.h>
12 #include <U8g2lib.h>
13
14 #ifdef U8X8_HAVE_HW_SPI
15 #include <SPI.h>
16 #endif
17 #ifdef U8X8_HAVE_HW_I2C
18 #include <Wire.h>
19 #endif
20
21 U8G2_SSD1306_128X64_NONAME_F_SW_I2C u8g2(U8G2_R0, /* clock=*/ SCL, /* data=*/ SDA, /* reset=*/ U8X8_PIN_NONE); // All Boards without Reset of the Display
22
23
24 ESP8266WiFiMulti WiFiMulti;
25 WiFiClient client;
26 HTTPClient http;
27
28 String payload = "";
29
30 bool HttpDateFlag = false;
31
32 char ssid[] = "你的WiFi名称";
33 char pswd[] = "密码";
34
35 void GetHttpDate()
36 {
37 //等待连接
38 while(WiFiMulti.run() != WL_CONNECTED)
39 {
40 delay(200);
41 }
42
43 if ((WiFiMulti.run() == WL_CONNECTED))
44 {
45 http.begin(client, "http://quan.suning.com/getSysTime.do");//苏宁网站提供的网络授时
46
47 int httpCode = http.GET();
48
49 if (httpCode > 0)
50 {
51 HttpDateFlag = true;
52 // file found at server
53 if (httpCode == HTTP_CODE_OK || httpCode == HTTP_CODE_MOVED_PERMANENTLY)
54 {
55 payload = http.getString();
56 Serial.println(payload);
57 }
58 }
59 else
60 {
61 Serial.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
62 }
63
64 http.end();
65 }
66 }
67 void HttpDateHandle()
68 {
69 const size_t capacity = JSON_OBJECT_SIZE(2) + 60;
70 DynamicJsonBuffer jsonBuffer(capacity);
71
72 JsonObject& root = jsonBuffer.parseObject(payload);
73
74 const char* sysTime2 = root["sysTime2"]; // "2021-07-17 15:26:56"
75 const char* sysTime1 = root["sysTime1"]; // "20210807170356"
76 Serial.println(sysTime2);
77 u8g2.setFont(u8g2_font_wqy15_t_chinese2);
78 u8g2.setFontDirection(0);
79 u8g2.clearBuffer();
80 u8g2.setCursor(0, 15);
81 u8g2.println("北京时间");
82 u8g2.setCursor(0, 40);
83 u8g2.println(sysTime2);
84 u8g2.setCursor(0, 60);
85 u8g2.print(sysTime2+11);
86 u8g2.sendBuffer();
87 }
88
89 void setup()
90 {
91 u8g2.begin();
92 u8g2.enableUTF8Print();
93
94 Serial.begin(115200);
95
96 Serial.println();
97
98 WiFi.mode(WIFI_STA);
99 WiFiMulti.addAP(ssid, pswd);
100 }
101
102 void loop()
103 {
104 GetHttpDate();
105 if(HttpDateFlag)
106 {
107 HttpDateHandle();
108 HttpDateFlag = false;
109 }
110 //delay(10000);
111 }
