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如何用ESP8266做一个天气预报,趣味与功能并存

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  • TA的每日心情
    郁闷
    2018-6-8 10:40
  • 签到天数: 1 天

    [LV.1]初来乍到

    发表于 2018-6-15 17:28 | 显示全部楼层 |阅读模式
    1、硬件
    用一个四博智联提供的nodemcu。一个OLED屏,一个USB线,4根杜邦线,可以上网的路由器,电脑。


         3V3---VCC
         GND---GND
         GPIO4(D2)---SDA
         GPIO5(D1)---SCL

    2、设置路由器
    把路由器账号设置为把路由器账号设置为
    账号:xh003
    密码:zxd+19901120=
    3、烧录程序
    打开ESP_TOOLS下载工具,选择8266.
    工具下载:http://bbs.doit.am/forum.php?mod ... 6&highlight=TOO

    点击START.等待烧录完成。

    烧录完成后复位一下nodemcu。等待10s左右。
    测试结果如下:



    Arduino代码如下:
    #include <ESP8266WiFi.h>
    #include <ArduinoJson.h>
    #include <Wire.h>
    #include "OLED.h"
    static const char logo[] PROGMEM={
    0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0xff,0xff,0xff,0x7f,0x80,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0xff,0xff,0xff,0x03,0x00,0xf0,0xff,0xff,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0xff,0xff,0x7f,0x00,0x00,0x80,0xff,0xff,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0xff,0xff,0x0f,0x00,0x00,0x00,0xfe,0xff,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0xff,0xff,0x03,0x00,0x00,0x00,0xf8,0xff,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0xff,0xff,0xe0,0xff,0x03,0x00,0xe0,0xff,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0xff,0x1f,0x1c,0xf0,0x1f,0x00,0x80,0xff,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0xff,0x0f,0x00,0x80,0x7f,0x00,0x00,0xff,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0xff,0x0f,0x00,0x00,0xff,0x01,0x00,0xfc,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0xff,0x07,0x00,0x00,0xfe,0x03,0x00,0xf8,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0xff,0x03,0x00,0x00,0xfc,0x07,0x00,0xf8,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0xff,0x01,0x00,0x00,0xf8,0x0f,0x00,0xf0,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0xff,0x00,0x00,0x00,0xf0,0x1f,0x00,0xf0,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0x3f,0x00,0x00,0x00,0xf0,0x1f,0x00,0xf0,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0x1f,0x00,0x00,0x00,0xf0,0x1f,0x00,0xf0,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0x1f,0x00,0x00,0x00,0xf0,0x1f,0x00,0xf0,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0x0f,0x00,0x00,0x00,0xf0,0x3f,0x00,0xf0,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0x07,0x00,0x00,0x00,0xf0,0x1f,0x00,0xf8,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0x07,0x00,0x00,0x00,0xf0,0x0f,0x00,0xf8,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0x03,0x00,0x00,0x00,0xf8,0x03,0x00,0xfc,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0x01,0x00,0x00,0x00,0xfc,0x00,0x00,0x7e,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0x01,0x00,0x00,0x00,0x7f,0x00,0x00,0x7f,0xf8,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0x00,0x00,0x00,0x80,0x1f,0x00,0x80,0x7f,0xf8,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0x00,0x00,0x00,0xe0,0x07,0x00,0xc0,0x3f,0xf0,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0x00,0x00,0x00,0xf8,0x01,0x00,0xe0,0x3f,0xf0,0xff,0xff,0xff,0x7f,
    0xff,0xff,0x7f,0x00,0x00,0x00,0x7f,0x00,0x00,0xf8,0x3f,0xf0,0xff,0xff,0xff,0x7f,
    0xff,0xff,0x7f,0x00,0x00,0xe0,0x1f,0x00,0x00,0xfe,0x0f,0xf0,0xff,0xff,0xff,0x7f,
    0xff,0xff,0x7f,0x00,0x00,0xf8,0x03,0x00,0x80,0xff,0x0f,0xf8,0xff,0xff,0xff,0x7f,
    0xff,0xff,0x7f,0x00,0x00,0x7e,0x00,0x00,0xe0,0xff,0x01,0xf0,0xff,0xff,0xff,0x7f,
    0xff,0xff,0x7f,0x00,0x00,0x1f,0x00,0x00,0xf8,0xff,0x00,0xf8,0xff,0xff,0xff,0x7f,
    0xff,0xff,0x7f,0x00,0xc0,0x0f,0x00,0x00,0xfe,0x7f,0x00,0xfc,0xff,0xff,0xff,0x7f,
    0xff,0xff,0x7f,0x00,0xe0,0x03,0x00,0x80,0xff,0x1f,0x00,0xfe,0xff,0xff,0xff,0x7f,
    0xff,0xff,0x7f,0x00,0xf8,0x01,0x00,0xe0,0xff,0x07,0x00,0xfe,0xff,0xff,0xff,0x7f,
    0xff,0xff,0x7f,0x00,0x7c,0x00,0x00,0xfc,0xff,0x00,0x00,0xfc,0xff,0xff,0xff,0x7f,
    0xff,0xff,0x7f,0x00,0x3e,0x00,0x00,0xff,0x07,0x00,0x00,0xfc,0xff,0xff,0xff,0x7f,
    0xff,0xff,0x7f,0x00,0x0f,0x00,0xc0,0xff,0x07,0x00,0x00,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0x80,0x07,0x00,0xf0,0xff,0xff,0x0f,0xc0,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0xc0,0x03,0x00,0xf8,0xff,0xff,0x3f,0xf8,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0xc0,0x01,0x00,0xfe,0xf8,0xc7,0xff,0xff,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0xe1,0x01,0x00,0x7f,0xc0,0x03,0x87,0x00,0xfe,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0xe1,0x00,0xc0,0x7f,0x80,0x01,0x86,0x00,0xfe,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0x63,0x00,0xe0,0x7f,0x80,0x01,0x86,0x00,0xfe,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0x63,0x00,0xe0,0x7f,0x8c,0x31,0x86,0xc3,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0x67,0x00,0xc0,0x7f,0x8c,0x31,0x86,0x83,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0x6f,0x00,0xc0,0x7f,0x8c,0x31,0x86,0x83,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0x7f,0x00,0xc0,0x7f,0x8c,0x31,0x86,0x83,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0x7f,0x00,0xc0,0x7f,0x8c,0x31,0x86,0x83,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0xff,0x00,0x80,0x7f,0x80,0x01,0x86,0x83,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0xff,0x01,0x00,0x7f,0x80,0x01,0x86,0x83,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0xff,0x03,0x00,0x7c,0xc0,0x03,0x87,0x83,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0xff,0x07,0x00,0xf8,0xff,0xff,0xf1,0xff,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0xff,0x0f,0x00,0xe0,0xff,0x7f,0xf0,0xff,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0xff,0x3f,0x00,0x00,0xfe,0x07,0xfc,0xff,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0xff,0x7f,0x00,0x00,0x00,0x00,0xff,0xff,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0xff,0xff,0x03,0x00,0x00,0xe0,0xff,0xff,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0xff,0xff,0x0f,0x00,0x00,0xfc,0xff,0xff,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0xff,0xff,0x7f,0x00,0x80,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0xff,0xff,0xff,0x3f,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0x7f,
    0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0x7f
    };
    //GPIO4(SDA) GPIO5(SCL)
    OLED display(4, 5);

    const char* ssid     = "xh003";         // XXXXXX -- 使用时请修改为当前你的 wifi ssid
    const char* password = "zxd+19901120=";         // XXXXXX -- 使用时请修改为当前你的 wifi 密码
    const char* host = "api.seniverse.com";
    const char* APIKEY = "wcmquevztdy1jpca";        //API KEY
    const char* city = "shenzhen";
    const char* language = "en";//zh-Hans 简体中文  会显示乱码

    const unsigned long BAUD_RATE = 115200;                   // serial connection speed
    const unsigned long HTTP_TIMEOUT = 5000;               // max respone time from server
    const size_t MAX_CONTENT_SIZE = 1000;                   // max size of the HTTP response

    // 我们要从此网页中提取的数据的类型
    struct UserData {
      char city[16];//城市名称
      char weather[32];//天气介绍(多云...)
      char temp[16];//温度
      char udate[32];//更新时间
    };

    WiFiClient client;
    char response[MAX_CONTENT_SIZE];
    char endOfHeaders[] = "\r\n\r\n";

    /**
    * @Desc 初始化操作
    */
    void setup() {
      WiFi.mode(WIFI_STA);     //设置esp8266 工作模式
      Serial.begin(BAUD_RATE);
      delay(10);
      Serial.println();
      Serial.println();
      Serial.print("Connecting to ");//写几句提示,哈哈
      Serial.println(ssid);
      WiFi.begin(ssid, password);   //连接wifi
      while (WiFi.status() != WL_CONNECTED) {
        //这个函数是wifi连接状态,返回wifi链接状态
        delay(100);
        Serial.print(".");
      }
      Serial.println("");
      Serial.println("WiFi connected");
      delay(100);
      Serial.println("IP address: ");
      Serial.println(WiFi.localIP());//WiFi.localIP()返回8266获得的ip地址
      client.setTimeout(HTTP_TIMEOUT);

    }

    /**
    * @Desc  主函数
    */

    void loop() {
       //初始化oled
      display.begin();

      //测试显示信息
      display.print("Hello DOIT",2,3);
      display.print("www.doit.am",4,3);
      delay(2*1000);
      display.clear();

      while (!client.connected()){
         if (!client.connect(host, 80)){
             Serial.println("connection....");
             delay(100);
         }
      }
      if (sendRequest(host, city, APIKEY) && skipResponseHeaders()) {
        clrEsp8266ResponseBuffer();
        readReponseContent(response, sizeof(response));
        UserData userData;
        if (parseUserData(response, &userData)) {
          printUserData(&userData);
        }
      }
      delay(300);//每5s调用一次
    }

    /**
    * @发送请求指令
    */
    bool sendRequest(const char* host, const char* cityid, const char* apiKey) {
      // We now create a URI for the request
      //心知天气
      String GetUrl = "/v3/weather/now.json?key=";
      GetUrl += apiKey;
      GetUrl += "&location=";
      GetUrl += city;
      GetUrl += "&language=";
      GetUrl += language;
      // This will send the request to the server
      client.print(String("GET ") + GetUrl + " HTTP/1.1\r\n" +
                   "Host: " + host + "\r\n" +
                   "Connection: close\r\n\r\n");
      Serial.println("create a request:");
      Serial.println(String("GET ") + GetUrl + " HTTP/1.1\r\n" +
                   "Host: " + host + "\r\n" +
                   "Connection: close\r\n");
      delay(100);
      return true;
    }

    /**
    * @Desc 跳过 HTTP 头,使我们在响应正文的开头
    */
    bool skipResponseHeaders() {
      // HTTP headers end with an empty line
      bool ok = client.find(endOfHeaders);
      if (!ok) {
        Serial.println("No response or invalid response!");
      }
      return ok;
    }

    /**
    * @Desc 从HTTP服务器响应中读取正文
    */
    void readReponseContent(char* content, size_t maxSize) {
      size_t length = client.peekBytes(content, maxSize);
      delay(100);
      Serial.println("Get the data from Internet!");
      content[length] = 0;
      Serial.println(content);
      Serial.println("Read data Over!");
      client.flush();//这句代码需要加上  不然会发现每隔一次client.find会失败
    }

    /**
    * @Desc 解析数据
    * 数据格式如下:
    * {
    *    "results": [
    *        {
    *            "location": {
    *                "id": "WX4FBXXFKE4F",
    *                "name": "北京",
    *                "country": "CN",
    *                "path": "北京,北京,中国",
    *                "timezone": "Asia/Shanghai",
    *                "timezone_offset": "+08:00"
    *            },
    *            "now": {
    *                "text": "多云",
    *                "code": "4",
    *                "temperature": "23"
    *            },
    *            "last_update": "2017-09-13T09:51:00+08:00"
    *        }
    *}
    */
    bool parseUserData(char* content, struct UserData* userData) {
    //    -- 根据我们需要解析的数据来计算JSON缓冲区最佳大小
    //   如果你使用StaticJsonBuffer时才需要
    //    const size_t BUFFER_SIZE = 1024;
    //   在堆栈上分配一个临时内存池
    //    StaticJsonBuffer<BUFFER_SIZE> jsonBuffer;
    //    -- 如果堆栈的内存池太大,使用 DynamicJsonBuffer jsonBuffer 代替
      DynamicJsonBuffer jsonBuffer;

      JsonObject& root = jsonBuffer.parseObject(content);

      if (!root.success()) {
        Serial.println("JSON parsing failed!");
        return false;
      }

      //复制我们感兴趣的字符串
      strcpy(userData->city, root["results"][0]["location"]["name"]);
      strcpy(userData->weather, root["results"][0]["now"]["text"]);
      strcpy(userData->temp, root["results"][0]["now"]["temperature"]);
      strcpy(userData->udate, root["results"][0]["last_update"]);
      //  -- 这不是强制复制,你可以使用指针,因为他们是指向“内容”缓冲区内,所以你需要确保
      //   当你读取字符串时它仍在内存中
      return true;
    }

    // 打印从JSON中提取的数据
    void printUserData( struct UserData* userData) {
      Serial.println("Print parsed data :");
      display.print("City: ",0,0);
      display.print(userData->city,0,6);
      display.print("Weat: ",2,0);
      display.print(userData->weather,2,6);
      display.print("Temp: ",4,0);
      display.print(userData->temp,4,6);
    // display.print("Last Updata : ",7,2);
    display.print(userData->udate,6,0);
    // display.print("\r\n");
    delay(4*1000);
    }

    // 关闭与HTTP服务器连接
    void stopConnect() {
      Serial.println("Disconnect");
      client.stop();
    }

    void clrEsp8266ResponseBuffer(void){
        memset(response, 0, MAX_CONTENT_SIZE);      //清空
    }
    esp8266-weather-station.ino

    11.18 KB, 下载次数: 7

    Arduino源码
    esp8266-weather-station.ino.nodemcu.bin

    262.06 KB, 下载次数: 9

    模组烧录文件


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    发表于 2018-8-15 09:28 | 显示全部楼层
    盗贴?大部分源码都是和博哥一样的
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