node-red-contrib-reterminal-dm/reterminal-dm.js

The node accessing for Seeed Studio reTerminal DM various data such as buzzer, LED, light, touch positions.

const InputEvent = require('npm-reterminal-dm');
const dev = require('npm-reterminal-dm/lib/deviceid');
const led = require('npm-reterminal-dm/lib/led');
const buzzer = require('npm-reterminal-dm/lib/buzzer');
const light = require('npm-reterminal-dm/lib/light');
const path = require('path');

module.exports = function (RED) {

  function NodeRedReTerminalLEDUsrRed(config) {
    RED.nodes.createNode(this, config);
    var node = this;

    node.on('input', async function (msg) {
      if( msg.payload == true ){
        led.usrRedOn();
        this.status({fill:"green",shape:"dot",text:"Usr Red LED : on"});
      } else if( msg.payload == false ){
        led.usrRedOff();
        this.status({fill:"green",shape:"dot",text:"Usr Red LED : off"});
      }
    });

  }
  RED.nodes.registerType("led_usr_red", NodeRedReTerminalLEDUsrRed, {
    
  });

  function NodeRedReTerminalBuzzer(config) {
    RED.nodes.createNode(this, config);
    var node = this;

    node.on('input', async function (msg) {
      if( msg.payload == true ){
        buzzer.buzzerOn();
        this.status({fill:"green",shape:"dot",text:"Buzzer : on"});
      } else if( msg.payload == false ){
        buzzer.buzzerOff();
        this.status({fill:"gray",shape:"dot",text:"Buzzer : off"});
      }
    });

  }
  RED.nodes.registerType("buzzer", NodeRedReTerminalBuzzer, {
    
  });

  function NodeRedReTerminalLightSensor(config) {
    RED.nodes.createNode(this, config);
    var node = this;

    /*
    const spawn = require('child_process').spawn;
    const childprocess_buttons = spawn('node', [ path.join( __dirname , 'childprocess-light.js' )]);
    this.status({fill:"green",shape:"dot",text:"light sensor listened"});

    childprocess_buttons.stdout.on('data', (data) => {
      let str_data = String(data);
      const json_data = JSON.parse(str_data);

      msg = {};
      msg.payload = json_data;
      
      node.send(msg);
      
    });
    */

    const loopInterval = config.pollInterval;
    let timerID = setInterval(
      function () {
        const sensor_value = Number(light.lightSense())
        const json_data = {
          light:sensor_value
        }
        msg = {};
        msg.payload = json_data;
        node.send(msg);
      }, loopInterval
    );
    
    // この処理がないとタイマーが残る模様
    this.on('close', function() {
      clearInterval(timerID);
    });

  }
  RED.nodes.registerType("light_sensor", NodeRedReTerminalLightSensor, {
    
  });

  function NodeRedReTerminalTouch(config) {
    RED.nodes.createNode(this, config);
    var node = this;

    const spawn = require('child_process').spawn;
    const childprocess_buttons = spawn('node', [ path.join( __dirname , 'childprocess-touch.js' )]);
    this.status({fill:"green",shape:"dot",text:"touch panel listened"});

    childprocess_buttons.stdout.on('data', (data) => {
      let str_data = String(data);
      const json_data = JSON.parse(str_data);

      msg = {};
      msg.payload = json_data;
      
      node.send(msg);
      
    });

  }
  RED.nodes.registerType("touch_panel", NodeRedReTerminalTouch, {
    
  });
  
}