kalumajs esp8266httpclient OK

--------------以下は最初は動くがだんだんremote errorとなる。。。。tethering revenge

kill -9 $(lsof -t -i:3000)でいちいちportを閉じるのが重要だった

//$ mkdir thermo-server

// $ cd thermo-server

//$ npm init -y

//$ npm install express ip --save

----------server--原著どうり-----wifi環境よわく、tetheringで動かしてOKだった-------------------

const express = require('express');

const ip = require('ip');

const app = express();

const addr = ip.address();

const port = 3000;

let temperature = '0.0';

let humidity = '0';

app.get('/update', (req, res) => {

 　 if (req.query.t) temperature = req.query.t;

  　if (req.query.h) humidity = req.query.h;

res.status(200).send('OK');

});

app.get('/', (req, res) => {

  res.setHeader('Content-Type', 'text/html');

  res.send(`

<html>

  <body>

   <h1>${temperature}</h1>

   <h1>${humidity}</h1>

  </body>

</html>

  `);

});

app.listen(port ,  () =>{

   console.log(`server:${addr}:${port}`);

});

--- index.js------------これも原著どうりだ、ATベタ書きはパスした--------

const {DHT} = require('dht');

const {ESP8266HTTPClient} = require('esp8266-http-client');

const dht = new DHT(15,DHT.DHT11);

const esp = new ESP8266HTTPClient();

// ここでコンストラクタのくだりを読むとssid,passwordが設定される仕組み

// よってesp.wifi()でコネクトできる

storage.setItem('WIFI_SSID', 'HUAWEI@nova@lite@3+');

storage.setItem('WIFI_PASSWORD', '99991111');

storage.setItem('ADDRESS', '192.168.43.140'); // nodejsで決定されるIP

storage.setItem('PORT', '3000');

const addr = storage.getItem('ADDRESS');

const port = storage.getItem('PORT');

function start(){

 setInterval(() => {

  dht.read();

  let t = dht.temperature.toFixed(1);

  let h = dht.humidity.toFixed(0);

  esp.http(`http:://${addr}:${port}/update?t=${t}&h=${h}`)

   .then(() => {

     console.log(`/update?${t}&h=${h}`);

   });

  },10000);

}

esp.wifi().then(() => {

  console.log('wifi connected');

  start();

}).catch(err => {

  console.log('wifi connect failed');

  console.log(err);

});

-----------------------------------

以下がモタモタコード....

const { DHT } = require('dht');

const { WiFi } = require('wifi');

const http = require('http');

// Wi-Fi設定

const WIFI_SSID = 'HUAWEI@nova@lite@3+';

const WIFI_PASSWORD = '99991111';

// Node.jsサーバー

const SERVER_ADDRESS = '192.168.43.140';

const SERVER_PORT = 3000;

// DHT11：GP15

const dht = new DHT(15, DHT.DHT11);

const wifi = new WiFi();

let sending = false;

let timerStarted = false;

// HTTP送信

function sendData() {

  if (sending) {

    console.log('Previous request is running');

    return;

  }

  let temperature;

  let humidity;

  try {

    dht.read();

    temperature = dht.temperature;

    humidity = dht.humidity;

    if (

      typeof temperature !== 'number' ||

      typeof humidity !== 'number' ||

      !Number.isFinite(temperature) ||

      !Number.isFinite(humidity)

    ) {

      console.log('Invalid DHT11 data:',

        temperature, humidity);

      return;

    }

    temperature = temperature.toFixed(1);

    humidity = humidity.toFixed(0);

  } catch (err) {

    console.log('DHT11 read error:', err);

    return;

  }

  const path =

    '/update?t=' + encodeURIComponent(temperature) +

    '&h=' + encodeURIComponent(humidity);

  sending = true;

  console.log('HTTP GET:', path);

  let req;

  try {

    req = http.get({

      host: SERVER_ADDRESS,

      port: SERVER_PORT,

      path: path

    }, function (res) {

      console.log('HTTP status:', res.statusCode);

      res.on('data', function (chunk) {

        console.log('HTTP body:', chunk);

      });

      res.on('end', function () {

        console.log('HTTP response complete');

        sending = false;

      });

      res.on('error', function (err) {

        console.log('HTTP response error:', err);

        sending = false;

      });

      res.on('close', function () {

        // endイベントが発生しない場合にも送信状態を解除

        sending = false;

      });

    });

    req.on('error', function (err) {

      console.log('HTTP request error:', err);

      sending = false;

    });

  } catch (err) {

    console.log('HTTP start error:', err);

    sending = false;

  }

}

// Wi-Fi接続成功後に開始

function start() {

  if (timerStarted) return;

  timerStarted = true;

  console.log('Wi-Fi connected');

  sendData();

  setInterval(function () {

    sendData();

  }, 10000);

}

// 起動

console.log('Connecting to Wi-Fi...');

wifi.connect({

  ssid: WIFI_SSID,

  password: WIFI_PASSWORD

}, function (err) {

  if (err) {

    console.log('Wi-Fi connect failed:', err);

    return;

  }

  start();

});