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    How to use the 'node_helper', 'serialport'

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    • S Offline
      sdetweil @nhpunch
      last edited by

      @nhpunch sure. Make a GitHub repo, and let me know

      Sam

      How to add modules

      learning how to use browser developers window for css changes

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      • N Offline
        nhpunch
        last edited by nhpunch

        https://github.com/nhpunch/sohard
        

        I created ‘is_Pushed’ and tried to work by repeating false, true when the button was pressed

        S 1 Reply Last reply Reply Quote 0
        • S Offline
          sdetweil @nhpunch
          last edited by sdetweil

          @nhpunch said in How to use the 'node_helper', 'serialport':

          https://github.com/nhpunch/sohard

          Ok, the fundamental problem is what happens in getDom()…

          until getDom() returns this modules contribution to the single web page… that content is NOT IN the DOM… It is just in memory in your module.

          so the jquery $(button) will not work. ($ means document.) and the content is NOT IN the document… (yet)

          SO, you could change to use the non jquery

          button.addEventListener('click', ()=> {
             	
             	//$(button).on("click", function(){
             		if(self.hidden){
             		//	$(overlay).fadeIn(1000);
             		//	$(button).fadeTo(1000, 0.3);
             		//	$(text).html('OFF');
                                         Log.log("button pushed 'on' ")
             			self.hidden = false;  
             			self._isPushed = false;
             		}else{
             		//	$(overlay).fadeOut(1000);
             		//	$(button).fadeTo(1000, 1);  
             		//	$(text).html('ON');
                                         Log.log("button pushed 'off' ")
             			self.hidden = true;
             			self._isPushed = true;
             		}
             	});
             	return wrapper;
          

          but… all the data elements button, overlay and text will be long gone by the time the button is pushed.
          so you will have to redesign finding them again (document.getElementByID()… or something, a different jquery selector.)

          OR

          you can push the jquery code off into a timeout handler (wait a second or 2)…
          but you will still have to redesign how to find the button… as its data element on the stack of getDom() will be long gone.

          think of getDom() as a person taking notes… they write it down on their notepad.
          then LATER they edit a big document and add their text…

          until they complete that task, you can search thru the big document all u want, the text will NOT be there…

          when I used the sample above, the button responded…

          u know you can open the developers window (npm start dev) and select the console window,
          and messages from the module_name.js will show there

          message from the node_helper will appear in the terminal window where u issued npm start dev & (note the & at the end to allow the prompt to come back)…

          Sam

          How to add modules

          learning how to use browser developers window for css changes

          N 1 Reply Last reply Reply Quote 0
          • N Offline
            nhpunch @sdetweil
            last edited by nhpunch

            @sdetweil

            const NodeHelper = require('node_helper')
            const Serialport = require("serialport");
            
            module.exports = NodeHelper.create({
            
              start: function () {
              },
            
              socketNotificationReceived: function (notification, payload) {
            
                if (notification === 'CONFIG') {
                  const self = this;
                  self.config = payload;
                }
                else if(notification ==='BUTTON_PRESSED')
                {
                var serialport = new Serialport('/dev/ttyACM0', {   
            		baudRate: 9600
            		});
            
                var led = 0;
            
                  serialport.open(function () {
                    console.log('connect...');
                    serialport.on('data', function(data) { // 아두이노로부터 전달된 데이터
                      console.log('data received: ' + data);
                    });
                    
                    if(this._isPushed==false)
                    {
                      serialport.write("0");
                    }
                    else if(this._isPushed==true)
                    {
                      serialport.write("1");
                    }
                  });
                }
              }, 
            })
            
            

            Thank you very much…!!! Overlay is not important.

            It was working as you told me.

            Currently, node_helper sets the following, but serial.write does not work. May I ask you one last time?

            I’m really desperate:folded_hands_light_skin_tone: :folded_hands_light_skin_tone: :folded_hands_light_skin_tone: :folded_hands_light_skin_tone:

            https://github.com/nhpunch/sohard
            

            I uploaded the Arduino code.

            int led = 13;
            
            void setup() {
              Serial.begin(9600);
              pinMode(led, OUTPUT);
              Serial.println(“hello”);
            }
            
            void loop() {
              static int incomingValue = 0; // nodeJS에서 보낸값
            
              if ( Serial.available() > 0 ) { // 뭔가 입력값이 있다면
                incomingValue = Serial.read();
                Serial.println(incomingValue);
              }
              
              if ( incomingValue == 49 ) { // 값이 ‘1’ 이면
              digitalWrite(13, HIGH); // LED를 켠다.
              }
              if ( incomingValue == 48 ) { // 값이 ‘0’ 이면
              digitalWrite(13, LOW); // LED를 끈다.
              }
              deayl(2000);
            }
            
            1 Reply Last reply Reply Quote 0
            • S Offline
              sdetweil
              last edited by sdetweil

              @nhpunch said in How to use the 'node_helper', 'serialport':

                 if(this._isPushed==false)
              

              where is _isPushed defined or set?

              i know it is in module_name.js, but node_helper cannot see it…

              you should send that as the payload on button_pressed message

              Sam

              How to add modules

              learning how to use browser developers window for css changes

              1 Reply Last reply Reply Quote 0
              • N Offline
                nhpunch
                last edited by

                socketNotificationReceived: function (notification, payload) {
                
                    if (notification === 'CONFIG') {
                      const self = this;
                      self.config = payload;
                    }
                    else if(notification ==='BUTTON_PRESSED')
                    {
                      this._isPushed = payload;
                    var serialport = new Serialport('/dev/ttyACM0', {   
                		baudRate: 9600
                		});
                
                

                Is that right? I’m really sorry for you.

                S 1 Reply Last reply Reply Quote 0
                • S Offline
                  sdetweil @nhpunch
                  last edited by sdetweil

                  @nhpunch yes if you send it that way

                  this.sendSocketNotification(“BUTTON_PUSHED”,this._isPushed)

                  Sam

                  How to add modules

                  learning how to use browser developers window for css changes

                  N 2 Replies Last reply Reply Quote 0
                  • N Offline
                    nhpunch @sdetweil
                    last edited by

                    @sdetweil

                    0_1560202018149_2019-06-11-062442_1920x1080_scrot.png
                    false, true works with two button in module

                    It seems that the value can not be sent to the node_helper

                    why?

                    	buttonoff.addEventListener('click', ()=> {
                    			Log.log("button pushed 'on'")
                       			this._isPushed = false;
                    			console.log(this._isPushed);
                       	});
                    	button.addEventListener('click', ()=> {
                    			Log.log("button pushed 'off' ")
                       			this._isPushed = true;
                    			console.log(this._isPushed);
                       	});
                    

                    this is module

                              serialport.write(this._isPushed==true? '1' : '0');
                    

                    this is node_helper

                    S 1 Reply Last reply Reply Quote 0
                    • N Offline
                      nhpunch @sdetweil
                      last edited by

                      @sdetweil

                          else if(notification ==='BUTTON_PRESSED')
                          {
                            this._isPushed = payload;
                            console.log(payload);
                      

                      ‘false’ is displayed in the terminal window

                      ._isPushed is passed to node_helper, but I think that the changed value is not sent when the button is pressed.

                      Please advise…:folded_hands_light_skin_tone: :folded_hands_light_skin_tone: :folded_hands_light_skin_tone:

                      If this is solved, it’s really a success.:flexed_biceps_light_skin_tone:

                      1 Reply Last reply Reply Quote 0
                      • S Offline
                        sdetweil @nhpunch
                        last edited by

                        @nhpunch said in How to use the 'node_helper', 'serialport':

                        	buttonoff.addEventListener('click', ()=> {
                        			Log.log("button pushed 'on'")
                           			this._isPushed = false;
                        			console.log(this._isPushed);
                                                this.sendSocketNotification(“BUTTON_PUSHED”,this._isPushed)
                           	});
                         	 button.addEventListener('click', ()=> {
                         			Log.log("button pushed 'off' ")
                            			this._isPushed = true;
                         			console.log(this._isPushed);
                                                this.sendSocketNotification(“BUTTON_PUSHED”,this._isPushed)
                                 });
                        

                        Sam

                        How to add modules

                        learning how to use browser developers window for css changes

                        1 Reply Last reply Reply Quote 0
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