Kaluma-js-raspicow(ds1307,dht,ssd1306-simplefont,mqtt)

基本使用法

kaluma flash ./index.js --bundle and in kaluma shell  type .load 

----------------------ds1307RTC------i2cはビルトイン-------------

ds1307パッケージのsda,sclはどこにも記載がないがsda1,scl1(gpio2,gpio3)で成功！

bus電圧は５v必須だった！

const { I2C } = require('i2c');

const DS1307 = require('ds1307');

const i2c = new I2C(1, { mode: I2C.MASTER });

const ds1307 = new DS1307(i2c);

const date = new Date('2022-09-04T17:01:48.026Z');

ds1307.setDate(date);

setInterval(() => {

  console.log(ds1307.getDate().toISOString());

}, 1000)

-------------dht11-------------------------------------------------------

https://javascript.plainenglish.io/physical-computing-with-javascript-5-8-sensing-temperature-and-humidity-2040eb1d20e9 にしたがいdht11をうごかす

$ mkdir dht11-test
$ cd dht11-test
$ npm init -y

$ npm install https://github.com/niklauslee/dht --save

これでnode_modulesにdhtができる　本文から改変

const pin = 15;

const {DHT} = require('dht'); // @kaluma/不要

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

let result = dht.read();

if (result) {

  console.log(result);

  console.log("Humidity: " + dht.humidity + " %");

  console.log("Temperature: " + dht.temperature + " C");

} else {

  console.log('Failed to read');

}

このindex.jsを以下のようにしてflash(DHTもバンドルされる）　--portはlinuxでは不要

$ kaluma flash ./index.js --port <port> --bundle

あとはkaluma shellで.loadとすればOK

----------ssd1306 and simplefont---------------------------------------------------

https://kalumajs.org/packages/ のバッケージで ssd1306をインスト

const {SSD1306}=require('ssd1306/i2c'); const {I2C} = require('i2c'); const ssd1306 = new SSD1306(); let i2c0 = new I2C(0); ssd1306.setup(i2c0,{width:128, height:64}); const gc = ssd1306.getContext(); gc.drawRect(0,0,128,64); gc.display();

同一ディレクトリにsimplefontパッケージもインスト　

const {SSD1306} = require('ssd1306/i2c');

const ssd1306 = new SSD1306();

ssd1306.setup(board.i2c(0), {

  width: 128,

  height: 64  

});

var font = require('simple-fonts/minimal');

// var font = require('simple-fonts/leros');

// var font = require('simple-fonts/yamaha');

// var font = require('simple-fonts/lee-sans');

const gc = ssd1306.getContext();

gc.setFont(font);

gc.drawText(0, 0, "LOREM IPSUM DOLOR SIT AMET...");

gc.display();

--------------mqtt---------------raspicow にはwifiがビルトイン！--------------------------

https://github.com/pankleks/picomqtt/blob/main/example.js を参考にした

const   WiFi = require("wifi").WiFi,{ PicoMQTT } = require("picomqtt/picomqtt.min");

　//ここがキモ,ビルトインwifiの中でPicoMQTTをode_modulesによびに行く

const wifi = new WiFi();

wifi.connect({ ssid: "HUAWEI@nova@lite@3+", password: "99991111" }, (ex) => {

  if (ex)

    console.error(ex);

  else {

    console.log("wifi connected");

    const mqtt = new PicoMQTT("broker.emqx.io", { clientId: board.uid });

    mqtt.on("connected", () => {

      console.log("mqtt connected");

      

      mqtt.subscribe("test/topic");

      mqtt.publish("test/topic", "you should get this");

      mqtt.publish("test/topic", "you should also get this");

      mqtt.unsubscribe("test/topic");

      mqtt.publish("test/topic", "you should not get this");

    });

    mqtt.on("message", (msg) => {

      console.log(`mqtt message -> ${msg.topic}: ${msg.message}`);

    });

    mqtt.on("error", (ex) => {

      console.log(`mqtt error -> ${ex.message || ex}`);

    });

    mqtt.on("disconnected", (reconnect) => {

      console.log(`mqtt disconnected, reconnect = ${reconnect}`);

　　// if reconnect is true, mqtt will try to reconnect

    });

    mqtt.connect();

    setTimeout(() => {

      mqtt.disconnect();  // stop mqtt

    }, 1000 * 120);

  }

});