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David1234321

Member since Apr 2020 • Last active Nov 2022
  • 17 conversations
  • 81 comments

First time user of this - seem very cool

Most recent activity

  • started
    • 20 comments
    • 1,634 views
    @David1234321 replied

  • fresh start with MDBT42Q , some specs before start toe code
    in Puck.js, Pixl.js and MDBT42 •
    Avatar for David1234321

    Ok
    Thanks

    it seem that now everything is working for me (almost),
    I will continue working - and if I will have more question I will ask.

    Thank you very much for the help!

  • fresh start with MDBT42Q , some specs before start toe code
    in Puck.js, Pixl.js and MDBT42 •
    Avatar for David1234321

    so I can't read the pin status and know if it's "1" \ "0"?

  • fresh start with MDBT42Q , some specs before start toe code
    in Puck.js, Pixl.js and MDBT42 •
    Avatar for David1234321

    Ok, it's working - thank you!

    but now I see another problem ,
    when I try to read the pin status using this command:

    NRF.setServices({
  "3e440001-f5bb-357d-719d-179272e4d4d9": {
    "3e440002-f5bb-357d-719d-179272e4d4d9": {
      description: "Setup Led",  // optional, default is null,
      writable : true,
      readable : true,
      notify: true,
      maxLen : 10,
      value : "Setup_Data",
      onWrite : function(evt) {
        data = evt.data[0];
        g.clear();
        g.setFontVector (20);
        g.drawString('Data receive',2,2);
        g.drawString(data,2,40);
        g.flip();
        if (data =="1") {
       // if (data < 18) {
           digitalWrite(LED, 1);
           digitalWrite(Relay_Pin, 1);
            }
       else {
       digitalWrite(LED, 0);
       digitalWrite(Relay_Pin, 0);}
       Relay_Status = digitalRead(Relay_Pin); 

      }
    },
	"3e440008-f5bb-357d-719d-179272e4d4d9": {
     description: "Device Temp",  // optional, default is null,
      readable : true,
      notify: true,
      value : [E.getTemperature()]
    }
  }
}, {});

    it turn off the led that connected to Relay_Pin

    when I remove the this line - the led stay on
    what could be the problem ?
    when I read the data from "nRF" I can see the value is "0x01"

    and one final "understanding" question:
    if I understand correct - there is no need for the connected device to know the Service UUID , just the CHAR uuid
    there is no used of the service - right ?

    ***I mange to make my Python code work - and there I only used the CHAR UUID , didn't use \ took any attention for the Service UUID

  • fresh start with MDBT42Q , some specs before start toe code
    in Puck.js, Pixl.js and MDBT42 •
    Avatar for David1234321

    when I print to the OLED
    E.getTemperature() - I get 24.5 , so it's OK
    so if I will use this Characteristic for the temperature '2A6E' - will it show me ok on the nRF?
    I have looked here
    https://programmaticponderings.com/2020/08/04/getting-started-with-bluetooth-low-energy-ble-and-generic-attribute-profile-gatt-specification-for-iot/

    and you can see in the nRf he is showing decimal value and say it's temp
    https://programmaticponderings.files.wordpress.com/2020/08/screenshot_20200731-185558-5.png

    I guess I will need to change the UUID also , no ?

    Thanks ,

    About my code

    1. can I see the MAC of the remote device that connected?
      I want to print it on the OLED , for testing

    2. I have wrote this code , it's seem to be working,
      my problem is when I disconnect:
      LED2 is off (as it should be)
      but on the OLED I still see "Connected" and the temp is changing every 5 seconds
      I guess it's because the Interval function that is still running
      can you see what I did wrong?

      My_MAC = NRF.getAddress();
Relay_Pin = 22;

print("My MAC address is " , My_MAC);
var n = 0;


function start(){
// write some text
g.setFontVector (20);
g.drawString("David Test!",2,2);
g.drawString("BLE ON",2,40);
// write to the screen
g.flip();
}

function BLE_Connect(){ 
setInterval(function() {
NRF.updateServices({
"3e440001-f5bb-357d-719d-179272e4d4d9" : {
"3e440008-f5bb-357d-719d-179272e4d4d9" : {
  value :  [E.getTemperature()],//to be able to see that read is correct
  notify: true
}

}
});
g.clear();
g.setFontVector (20);
g.drawString("Connected!",2,2);
g.setFontVector (10);
g.drawString("Temp is: " + E.getTemperature(), 1, 40);
g.flip();
}, 5000);

}

function BLE_Disconnect(){
g.clear();
g.setFontVector (20);
g.drawString("Waiting!",2,2);
g.flip();
}

var i2c = new I2C();
i2c.setup({ scl : D20, sda: D19 });
var g = require("SSD1306").connect(i2c, start);


NRF.setAdvertising({}, {name:"OfficeTest"});

NRF.setServices({
"3e440001-f5bb-357d-719d-179272e4d4d9": {
"3e440002-f5bb-357d-719d-179272e4d4d9": {
  description: "Setup Led",  // optional, default is null,
  writable : true,
  readable : true,
  notify: true,
  maxLen : 10,
  value : "Setup_Data",
  onWrite : function(evt) {
    data = evt.data[0];
    if (data < 18) {
        digitalWrite(LED, 1);
        digitalWrite(Relay_Pin, 1);
        }
   else {
   digitalWrite(LED, 0);
   digitalWrite(Relay_Pin, 0);}

  }
},
	"3e440008-f5bb-357d-719d-179272e4d4d9": {
 description: "Device Temp",  // optional, default is null,
  readable : true,
  notify: true,
  value : ["Temp_Location"]
}
}
}, {});

setInterval(function() {
NRF.updateServices({
"3e440001-f5bb-357d-719d-179272e4d4d9" : {
"3e440002-f5bb-357d-719d-179272e4d4d9" : {
  value :  [data, heartrate],//to be able to see that read is correct
  notify: true
},
}
}); }, 5000);

// On disconnect, turn off led
NRF.on('disconnect', function() {
digitalWrite(LED2, 0);
BLE_Disconnect();
});

NRF.on('connect', function() {
digitalWrite(LED2, 1);
BLE_Connect();
  
});

    Thank you again ,

  • started
    • 5 comments
    • 574 views
    @David1234321 replied

  • Connect I2C Oled display to MDSB42Q?
    in Puck.js, Pixl.js and MDBT42 •
    Avatar for David1234321

    Obviously :-)

    it's working

    thanks,

  • is there a windows app like "nRF" for connecting and debug ?
    in Tutorials •
    Avatar for David1234321

    OK
    I will stay with the nRF

    Thanks,

  • started
    • 3 comments
    • 559 views
    @David1234321 replied

  • Connect I2C Oled display to MDSB42Q?
    in Puck.js, Pixl.js and MDBT42 •
    Avatar for David1234321

    I'm using this device
    128×64 OLED display module (SSD1306) , I will try

    just to be ready
    if I take the code:

    function start(){
 // write some text
 g.drawString("Hello World!",2,2);
 // write to the screen
 g.flip();
}

// I2C
I2C1.setup({scl:B6,sda:B7});
var g = require("SSD1306").connect(I2C1, start);

    it's should work ?
    will change it to print if someone is connected or not

    Thanks ,

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