ESP8266网络天气时钟OLED显示

Arduino代码
注意修改 WiFi 名称和密码；需要申请【心知天气】API私钥；

心知天气URL：https://www.seniverse.com

复制

/*

参考：

<a  target="_blank">https://blog.csdn.net/weixin_44668788/article/details/120643078</a>

<a  target="_blank">http://www.taichi-maker.com/homepage/iot-development/iot-platform/seniverse/esp8266-application/</a>

OLED connect with ESP8266 NodeMCU

SCL -- D1

SDA -- D2

*/

//引入必要的头文件

#include <ArduinoJson.h>

#include <ESP8266WiFi.h>

#include <SPI.h>

#include <U8g2lib.h>

#include <WiFiUdp.h>

#include <TimeLib.h>

#include <DNSServer.h>

#include <ESP8266WebServer.h>

WiFiUDP Udp;

unsigned int localPort = 8888; // 用于侦听UDP数据包的本地端口

​

//网络校时的相关配置

static const char ntpServerName[] = "ntp1.aliyun.com"; //NTP服务器，使用阿里云

int timeZone = 8; //时区设置，采用东8区

​

//保存断网前的最新数据

int results_0_now_temperature_int_old;

String results_0_now_text_str_old;

int results_0_daily_1_high_int_old;

int results_0_daily_1_low_int_old;

String results_0_daily_1_text_day_str_old;

​

//函数声明

time_t getNtpTime();

void sendNTPpacket(IPAddress &address);

void oledClockDisplay();

void sendCommand(int command, int value);

void initdisplay();

void connectWiFi();

void parseInfo_now(WiFiClient client,int i);

void parseInfo_fut(WiFiClient client,int i);

//

boolean isNTPConnected = false;

​

const unsigned char xing[] U8X8_PROGMEM = {

    0x00, 0x00, 0xF8, 0x0F, 0x08, 0x08, 0xF8, 0x0F, 0x08, 0x08, 0xF8, 0x0F, 0x80, 0x00, 0x88, 0x00,

    0xF8, 0x1F, 0x84, 0x00, 0x82, 0x00, 0xF8, 0x0F, 0x80, 0x00, 0x80, 0x00, 0xFE, 0x3F, 0x00, 0x00}; /*星*/

const unsigned char liu[] U8X8_PROGMEM = {

    0x40, 0x00, 0x80, 0x00, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0xFF, 0x7F, 0x00, 0x00, 0x00, 0x00,

    0x20, 0x02, 0x20, 0x04, 0x10, 0x08, 0x10, 0x10, 0x08, 0x10, 0x04, 0x20, 0x02, 0x20, 0x00, 0x00}; /*六*/

​

typedef struct

{                  //存储配置结构体

    int tz;        //时间戳

} config_type;

config_type config;

​

WiFiClient clientNULL;

DNSServer dnsServer;

ESP8266WebServer server(80);

​

​

//----------WIFI连接配置----------

const char* ssid     = "xxxxxxx";       // 连接WiFi名，需要修改

const char* password = "xxxxxxxx";          // 连接WiFi密码，需要修改

                                            // 请将您需要连接的WiFi密码填入引号中

//----------天气API配置----------

const char* host = "api.seniverse.com";   // 将要连接的服务器地址  

const int httpPort = 80;              // 将要连接的服务器端口      

​

// 心知天气HTTP请求所需信息

String reqUserKey = "xxxxxx";   // 私钥，需要修改

String reqLocation = "Shanghai";            // 城市

String reqUnit = "c";                      // 摄氏/华氏

​

//----------设置屏幕----------

U8G2_SSD1306_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0, /* reset=*/U8X8_PIN_NONE);

int sta = 0;

//----------初始化OLED----------

void initdisplay()

{

    u8g2.begin();

    u8g2.enableUTF8Print();

}

//----------用于获取实时天气的函数(0)----------

void TandW(){

  String reqRes = "/v3/weather/now.json?key=" + reqUserKey +

                  + "&location=" + reqLocation + 

                  "&language=en&unit=" +reqUnit;

  // 向心知天气服务器服务器请求信息并对信息进行解析

  httpRequest(reqRes,0);

  //延迟，需要低于20次/分钟

  delay(5000);

}

void display_1(int results_0_now_temperature_int,String results_0_now_text_str);//声明函数，用于显示温度、天气

​

​

//----------获取3天预报(1)----------

void threeday(){

  // 建立心知天气API当前天气请求资源地址

  String reqRes = "/v3/weather/daily.json?key=" + reqUserKey +

                  + "&location=" + reqLocation + "&language=en&unit=" +

                  reqUnit + "&start=0&days=3";

​

  // 向心知天气服务器服务器请求信息并对信息进行解析

  httpRequest(reqRes,1);

  delay(5000);

}

​

void clock_display(time_t prevDisplay){

    server.handleClient();

    dnsServer.processNextRequest();

    if (timeStatus() != timeNotSet)

    {

        if (now() != prevDisplay)

        { //时间改变时更新显示

            prevDisplay = now();

            oledClockDisplay();

        }

    }

}

​

​

void setup(){

  Serial.begin(9600);          

  Serial.println("");

  initdisplay();

  // 连接WiFi

​

  

  

  u8g2.clearBuffer();

  u8g2.setFont(u8g2_font_unifont_t_chinese2);

  u8g2.setCursor(0, 14);

  u8g2.print("Waiting for WiFi");

  u8g2.setCursor(0, 30);

  u8g2.print("connection...");

  u8g2.sendBuffer();

  connectWiFi();

  Udp.begin(localPort);

  setSyncProvider(getNtpTime);

  setSyncInterval(300); //每300秒同步一次时间

​

  

}

​

time_t prevDisplay = 0; //当时钟已经显示

 

void loop(){

    if (sta>=0 && sta<=250){

      clock_display(prevDisplay);

      

    }else if(sta == 251){

      TandW();

      

    }else{

      threeday();

      

    }

​

    ++sta;

​

    if(sta==253){

      sta = 0;

    }

}

 

// 向心知天气服务器服务器请求信息并对信息进行解析

void httpRequest(String reqRes,int stat){

  WiFiClient client;

​

  // 建立http请求信息

  String httpRequest = String("GET ") + reqRes + " HTTP/1.1\r\n" + 

                              "Host: " + host + "\r\n" + 

                              "Connection: close\r\n\r\n";

  Serial.println(""); 

  Serial.print("Connecting to "); Serial.print(host);

​

  // 尝试连接服务器

  if (client.connect(host, 80)){

    Serial.println(" Success!");

 

    // 向服务器发送http请求信息

    client.print(httpRequest);

    Serial.println("Sending request: ");

    Serial.println(httpRequest);  

 

    // 获取并显示服务器响应状态行 

    String status_response = client.readStringUntil('\n');

    Serial.print("status_response: ");

    Serial.println(status_response);

 

    // 使用find跳过HTTP响应头

    if (client.find("\r\n\r\n")) {

      Serial.println("Found Header End. Start Parsing.");

    }

    if (stat == 0){

      

      // 利用ArduinoJson库解析心知天气响应信息(实时数据)

      parseInfo_now(client,1); 

    }else if(stat == 1){

      parseInfo_fut(client,1);

    }

  }

  else {

    Serial.println(" connection failed!");

    if (stat == 0){

      

      // 利用ArduinoJson库解析心知天气响应信息(实时数据)

      parseInfo_now(clientNULL,0); 

    }else if(stat == 1){

      parseInfo_fut(clientNULL,0);

    }

  }

    

  //断开客户端与服务器连接工作

  client.stop(); 

}

​

// 连接WiFi

void connectWiFi(){

  WiFi.begin(ssid, password);                  // 启动网络连接

  Serial.print("Connecting to ");              // 串口监视器输出网络连接信息

  Serial.print(ssid); Serial.println(" ...");  // 告知用户NodeMCU正在尝试WiFi连接

  

  int i = 0;                                   // 这一段程序语句用于检查WiFi是否连接成功

  while (WiFi.status() != WL_CONNECTED) {      // WiFi.status()函数的返回值是由NodeMCU的WiFi连接状态所决定的。 

    delay(1000);                               // 如果WiFi连接成功则返回值为WL_CONNECTED                       

    Serial.print(i++); Serial.print(' ');      // 此处通过While循环让NodeMCU每隔一秒钟检查一次WiFi.status()函数返回值

  }                                            // 同时NodeMCU将通过串口监视器输出连接时长读秒。

                                               // 这个读秒是通过变量i每隔一秒自加1来实现的。                                              

  Serial.println("");                          // WiFi连接成功后

  Serial.println("Connection established!");   // NodeMCU将通过串口监视器输出"连接成功"信息。

  Serial.print("IP address:    ");             // 同时还将输出NodeMCU的IP地址。这一功能是通过调用

  Serial.println(WiFi.localIP());              // WiFi.localIP()函数来实现的。该函数的返回值即NodeMCU的IP地址。  

}

​

// 利用ArduinoJson库解析心知天气响应信息(实时)

void parseInfo_now(WiFiClient client,int i){

​

  if(i==1){

  const size_t capacity = JSON_ARRAY_SIZE(1) + JSON_OBJECT_SIZE(1) + 2*JSON_OBJECT_SIZE(3) + JSON_OBJECT_SIZE(6) + 230;

  DynamicJsonDocument doc(capacity);

  

  deserializeJson(doc, client);

  

  JsonObject results_0 = doc["results"][0];

  

  JsonObject results_0_now = results_0["now"];

  const char* results_0_now_text = results_0_now["text"]; // "Sunny"

  const char* results_0_now_code = results_0_now["code"]; // "0"

  const char* results_0_now_temperature = results_0_now["temperature"]; // "32"

  

  const char* results_0_last_update = results_0["last_update"]; // "2020-06-02T14:40:00+08:00" 

 

  // 通过串口监视器显示以上信息

  String results_0_now_text_str = results_0_now["text"].as<String>(); 

  int results_0_now_code_int = results_0_now["code"].as<int>(); 

  int results_0_now_temperature_int = results_0_now["temperature"].as<int>(); 

  String results_0_last_update_str = results_0["last_update"].as<String>();   

 

  Serial.println(F("======Weahter Now======="));

  Serial.print(F("Weather Now: "));

  Serial.print(results_0_now_text_str);

  Serial.print(F(" "));

  Serial.println(results_0_now_code_int);

  Serial.print(F("Temperature: "));

  Serial.println(results_0_now_temperature_int);

  Serial.print(F("Last Update: "));

  Serial.println(results_0_last_update_str);

  Serial.println(F("========================"));

  display_0(results_0_now_temperature_int,results_0_now_text_str);

  results_0_now_text_str_old = results_0_now_text_str;

  results_0_now_temperature_int_old = results_0_now_temperature_int;

  }

  else{

    display_0(results_0_now_temperature_int_old,results_0_now_text_str_old);

  }

 

}

//----------输出实时天气----------

void display_0(int results_0_now_temperature_int,String results_0_now_text_str){

  //显示输出

  u8g2.clearBuffer();

  u8g2.setFont(u8g2_font_wqy16_t_gb2312);

  u8g2.setCursor(15, 14);

  u8g2.print("上海实时天气");

  u8g2.setFont(u8g2_font_logisoso24_tr);

  u8g2.setCursor(45, 44);

  u8g2.print(results_0_now_temperature_int);

  u8g2.setCursor(15, 61);

  u8g2.setFont(u8g2_font_unifont_t_chinese2);

  u8g2.print(results_0_now_text_str);

  u8g2.sendBuffer();

}

​

​

// 利用ArduinoJson库解析心知天气响应信息(预测)

void parseInfo_fut(WiFiClient client,int i){

  if(i==1){

    

  

  const size_t capacity = JSON_ARRAY_SIZE(1) + JSON_ARRAY_SIZE(3) + JSON_OBJECT_SIZE(1) + JSON_OBJECT_SIZE(3) + JSON_OBJECT_SIZE(6) + 3*JSON_OBJECT_SIZE(14) + 860;

  

  DynamicJsonDocument doc(capacity);

  

  deserializeJson(doc, client);

  

  JsonObject results_0 = doc["results"][0];

  

  JsonArray results_0_daily = results_0["daily"];

  

  JsonObject results_0_daily_0 = results_0_daily[0];

  const char* results_0_daily_0_date = results_0_daily_0["date"]; 

  const char* results_0_daily_0_text_day = results_0_daily_0["text_day"]; 

  const char* results_0_daily_0_code_day = results_0_daily_0["code_day"];

  const char* results_0_daily_0_text_night = results_0_daily_0["text_night"]; 

  const char* results_0_daily_0_code_night = results_0_daily_0["code_night"]; 

  const char* results_0_daily_0_high = results_0_daily_0["high"];

  const char* results_0_daily_0_low = results_0_daily_0["low"]; 

  const char* results_0_daily_0_rainfall = results_0_daily_0["rainfall"];

  const char* results_0_daily_0_precip = results_0_daily_0["precip"]; 

  const char* results_0_daily_0_wind_direction = results_0_daily_0["wind_direction"]; 

  const char* results_0_daily_0_wind_direction_degree = results_0_daily_0["wind_direction_degree"];

  const char* results_0_daily_0_wind_speed = results_0_daily_0["wind_speed"];

  const char* results_0_daily_0_wind_scale = results_0_daily_0["wind_scale"];

  const char* results_0_daily_0_humidity = results_0_daily_0["humidity"];

  

  JsonObject results_0_daily_1 = results_0_daily[1];

  const char* results_0_daily_1_date = results_0_daily_1["date"];

  const char* results_0_daily_1_text_day = results_0_daily_1["text_day"];

  const char* results_0_daily_1_code_day = results_0_daily_1["code_day"];

  const char* results_0_daily_1_text_night = results_0_daily_1["text_night"]; 

  const char* results_0_daily_1_code_night = results_0_daily_1["code_night"]; 

  const char* results_0_daily_1_high = results_0_daily_1["high"];

  const char* results_0_daily_1_low = results_0_daily_1["low"]; 

  const char* results_0_daily_1_rainfall = results_0_daily_1["rainfall"]; 

  const char* results_0_daily_1_precip = results_0_daily_1["precip"]; 

  const char* results_0_daily_1_wind_direction = results_0_daily_1["wind_direction"];

  const char* results_0_daily_1_wind_direction_degree = results_0_daily_1["wind_direction_degree"]; 

  const char* results_0_daily_1_wind_speed = results_0_daily_1["wind_speed"];

  const char* results_0_daily_1_wind_scale = results_0_daily_1["wind_scale"];

  const char* results_0_daily_1_humidity = results_0_daily_1["humidity"]; 

  

  JsonObject results_0_daily_2 = results_0_daily[2];

  const char* results_0_daily_2_date = results_0_daily_2["date"];

  const char* results_0_daily_2_text_day = results_0_daily_2["text_day"];

  const char* results_0_daily_2_code_day = results_0_daily_2["code_day"];

  const char* results_0_daily_2_text_night = results_0_daily_2["text_night"];

  const char* results_0_daily_2_code_night = results_0_daily_2["code_night"];

  const char* results_0_daily_2_high = results_0_daily_2["high"]; 

  const char* results_0_daily_2_low = results_0_daily_2["low"]; 

  const char* results_0_daily_2_rainfall = results_0_daily_2["rainfall"];

  const char* results_0_daily_2_precip = results_0_daily_2["precip"]; 

  const char* results_0_daily_2_wind_direction = results_0_daily_2["wind_direction"]; 

  const char* results_0_daily_2_wind_direction_degree = results_0_daily_2["wind_direction_degree"]; 

  const char* results_0_daily_2_wind_speed = results_0_daily_2["wind_speed"];

  const char* results_0_daily_2_wind_scale = results_0_daily_2["wind_scale"]; 

  const char* results_0_daily_2_humidity = results_0_daily_2["humidity"]; 

  

  const char* results_0_last_update = results_0["last_update"]; 

  

  // 从以上信息中摘选几个通过串口监视器显示

  String results_0_daily_0_date_str = results_0_daily_0["date"].as<String>();

  String  results_0_daily_0_text_day_str = results_0_daily_0["text_day"].as<String>(); 

  int results_0_daily_0_code_day_int = results_0_daily_0["code_day"].as<int>(); 

  String results_0_daily_0_text_night_str = results_0_daily_0["text_night"].as<String>(); 

  int results_0_daily_0_code_night_int = results_0_daily_0["code_night"].as<int>(); 

  int results_0_daily_0_high_int = results_0_daily_0["high"].as<int>();

  int results_0_daily_0_low_int = results_0_daily_0["low"].as<int>();

  String results_0_last_update_str = results_0["last_update"].as<String>();

​

  int results_0_daily_1_high_int = results_0_daily_1["high"].as<int>();

  int results_0_daily_1_low_int = results_0_daily_1["low"].as<int>();

  String results_0_daily_1_text_day_str = results_0_daily_1["text_day"].as<String>();

 

  Serial.println(F("======Today Weahter ======="));

  Serial.print(F("DATE: "));

  Serial.println(results_0_daily_0_date_str);

  Serial.print(F("Day Weather: "));

  Serial.print(results_0_daily_0_text_day_str);

  Serial.print(F(" "));

  Serial.println(results_0_daily_0_code_day_int);

  Serial.print(F("Night Weather: "));

  Serial.print(results_0_daily_0_text_night_str);

  Serial.print(F(" "));

  Serial.println(results_0_daily_0_code_night_int);

  Serial.print(F("High: "));

  Serial.println(results_0_daily_0_high_int);

  Serial.print(F("LOW: "));

  Serial.println(results_0_daily_0_low_int);

  Serial.print(F("Last Update: "));

  Serial.println(results_0_last_update_str);

  Serial.println(F("=============================="));

  display_1(results_0_daily_1_high_int,results_0_daily_1_low_int,results_0_daily_1_text_day_str);

  results_0_daily_1_high_int_old=results_0_daily_1_high_int;

  results_0_daily_1_low_int_old=results_0_daily_1_low_int;

  results_0_daily_1_text_day_str_old=results_0_daily_1_text_day_str;

}else{

  display_1(results_0_daily_1_high_int_old,results_0_daily_1_low_int_old,results_0_daily_1_text_day_str_old);

}

​

​

  

}

//----------预测明天天气----------

void display_1(int results_0_daily_1_high_int,int results_0_daily_1_low_int,String results_0_daily_1_text_day_str){

  //显示输出

  u8g2.clearBuffer();

  u8g2.setFont(u8g2_font_wqy16_t_gb2312);

  u8g2.setCursor(15, 14);

  u8g2.print("上海明天天气");

  

  u8g2.setFont(u8g2_font_logisoso24_tr);

  u8g2.setCursor(20, 46);

  u8g2.print(results_0_daily_1_low_int);

  u8g2.setCursor(56, 46);

  u8g2.print("~");

  u8g2.setCursor(75, 46);

  u8g2.print(results_0_daily_1_high_int);

  

  u8g2.setCursor(30, 62);

  u8g2.setFont(u8g2_font_unifont_t_chinese2);

  u8g2.print(results_0_daily_1_text_day_str);

  u8g2.sendBuffer();

}

​

​

/*-------- NTP 代码 ----------*/

​

const int NTP_PACKET_SIZE = 48;     // NTP时间在消息的前48个字节里

byte packetBuffer[NTP_PACKET_SIZE]; // 输入输出包的缓冲区

​

time_t getNtpTime()

{

    IPAddress ntpServerIP; // NTP服务器的地址

​

    while (Udp.parsePacket() > 0)

        ; // 丢弃以前接收的任何数据包

    Serial.println("Transmit NTP Request");

    // 从池中获取随机服务器

    WiFi.hostByName(ntpServerName, ntpServerIP);

    Serial.print(ntpServerName);

    Serial.print(": ");

    Serial.println(ntpServerIP);

    sendNTPpacket(ntpServerIP);

    uint32_t beginWait = millis();

    while (millis() - beginWait < 1500)

    {

        int size = Udp.parsePacket();

        if (size >= NTP_PACKET_SIZE)

        {

            Serial.println("Receive NTP Response");

            isNTPConnected = true;

            Udp.read(packetBuffer, NTP_PACKET_SIZE); // 将数据包读取到缓冲区

            unsigned long secsSince1900;

            // 将从位置40开始的四个字节转换为长整型，只取前32位整数部分

            secsSince1900 = (unsigned long)packetBuffer[40] << 24;

            secsSince1900 |= (unsigned long)packetBuffer[41] << 16;

            secsSince1900 |= (unsigned long)packetBuffer[42] << 8;

            secsSince1900 |= (unsigned long)packetBuffer[43];

            Serial.println(secsSince1900);

            Serial.println(secsSince1900 - 2208988800UL + timeZone * SECS_PER_HOUR);

            return secsSince1900 - 2208988800UL + timeZone * SECS_PER_HOUR;

        }

    }

    Serial.println("No NTP Response :-("); //无NTP响应

    isNTPConnected = false;

    return 0; //如果未得到时间则返回0

}

​

// 向给定地址的时间服务器发送NTP请求

void sendNTPpacket(IPAddress &address)

{

    memset(packetBuffer, 0, NTP_PACKET_SIZE);

    packetBuffer[0] = 0b11100011; // LI, Version, Mode

    packetBuffer[1] = 0;          // Stratum, or type of clock

    packetBuffer[2] = 6;          // Polling Interval

    packetBuffer[3] = 0xEC;       // Peer Clock Precision

    // 8 bytes of zero for Root Delay & Root Dispersion

    packetBuffer[12] = 49;

    packetBuffer[13] = 0x4E;

    packetBuffer[14] = 49;

    packetBuffer[15] = 52;

    Udp.beginPacket(address, 123); //NTP需要使用的UDP端口号为123

    Udp.write(packetBuffer, NTP_PACKET_SIZE);

    Udp.endPacket();

}

​

void oledClockDisplay()

{

    int years, months, days, hours, minutes, seconds, weekdays;

    years = year();

    months = month();

    days = day();

    hours = hour();

    minutes = minute();

    seconds = second();

    weekdays = weekday();

    Serial.printf("%d/%d/%d %d:%d:%d Weekday:%d\n", years, months, days, hours, minutes, seconds, weekdays);

    u8g2.clearBuffer();

    u8g2.setFont(u8g2_font_unifont_t_chinese2);

    u8g2.setCursor(0, 14);

    if (isNTPConnected)

    {

        if(timeZone>=0)

        {

            u8g2.print("当前时间(UTC+");

            u8g2.print(timeZone);

            u8g2.print(")");

        }

        else

        {

            u8g2.print("当前时间(UTC");

            u8g2.print(timeZone);

            u8g2.print(")");

        }

    }

    else

        u8g2.print("无网络!"); //如果上次对时失败，则会显示无网络

    String currentTime = "";

    if (hours < 10)

        currentTime += 0;

    currentTime += hours;

    currentTime += ":";

    if (minutes < 10)

        currentTime += 0;

    currentTime += minutes;

    currentTime += ":";

    if (seconds < 10)

        currentTime += 0;

    currentTime += seconds;

    String currentDay = "";

    currentDay += years;

    currentDay += "/";

    if (months < 10)

        currentDay += 0;

    currentDay += months;

    currentDay += "/";

    if (days < 10)

        currentDay += 0;

    currentDay += days;

​

    u8g2.setFont(u8g2_font_logisoso24_tr);

    u8g2.setCursor(0, 44);

    u8g2.print(currentTime);

    u8g2.setCursor(0, 61);

    u8g2.setFont(u8g2_font_unifont_t_chinese2);

    u8g2.print(currentDay);

    u8g2.drawXBM(80, 48, 16, 16, xing);

    u8g2.setCursor(95, 62);

    u8g2.print("期");

    if (weekdays == 1)

        u8g2.print("日");

    else if (weekdays == 2)

        u8g2.print("一");

    else if (weekdays == 3)

        u8g2.print("二");

    else if (weekdays == 4)

        u8g2.print("三");

    else if (weekdays == 5)

        u8g2.print("四");

    else if (weekdays == 6)

        u8g2.print("五");

    else if (weekdays == 7)

        u8g2.drawXBM(111, 49, 16, 16, liu);

    u8g2.sendBuffer();

}

实现效果如下

转载请注明出处，感谢！

这个项目很适合学习网络编程和硬件控制，很有意义

非常仔细，感谢分享！

这个网络是怎么实现的呢？                  

可以通过心知天气数据的吗？            

天气的图像可以通过什么方式实现？        

太空人的手表代码可以参考一下