user93296

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• Problem with advertising UUID that can later be filtered by react-native-ble-plx

  @user93296 started

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  @user93296 replied
• Problem with advertising UUID that can later be filtered by react-native-ble-plx

  in Puck.js, Pixl.js and MDBT42 • 5 years, 7 months

  

  I managed to get it to work by cleaning out all code and using the button press examples from Music Controller. And then just add the advertising code bit. It might have been a problem with the broadcast message being to long.

  function setBleBroadcastingDistress(){
    clearTimeout();
    NRF.setServices({
      'b2fb58a0-8452-402a-8435-eedf397464a9' : {
        0x5AFE : {
          value : true,
          readable : true
        }
      }
    }, { advertise: [ 'b2fb58a0-8452-402a-8435-eedf397464a9' ], uart: false });
  
    NRF.setAdvertising(
      {
        0x1815 : pressIdentifier
      }
      ,
      {
        name: 'ALERT!',
        showName: true
    });
    digitalWrite(LED1, 1);
    setTimeout(function(){
      digitalWrite(LED1,0 );
      setBleBroadcastingNormal();
    }, 10000);
  }
  

  Then advertise another UUID when everything is normal.

  For IDE mode this was enough.

  function ideConnect(){
      NRF.setServices(undefined, { uart: true });
      NRF.setAdvertising({},{
        name: 'IDE',
        showName: true
    });
  }
  

  I will add the connectable:true as you suggested.
  Thanks!

• Problem with advertising UUID that can later be filtered by react-native-ble-plx

  in Puck.js, Pixl.js and MDBT42 • 5 years, 7 months

  

  Leds flash as expected. Long press makes it blink blue, but nothing shows up in the "whants to pair" list of the IDE.

  Yes! iBeacon was my first attempt but iBeacon wont provide any method of identifying unique identifiers and separating them.
  e.g When monitoring for iBeacons in the background with uuid=123
  the triggerd event when iBeacon is in range dosen´t contain major or minor.

  https://github.com/Polidea/react-native-­ble-plx/wiki/Bluetooth-Scanning

• Problem with advertising UUID that can later be filtered by react-native-ble-plx

  in Puck.js, Pixl.js and MDBT42 • 5 years, 7 months

  

  Goal: Im trying to create a puck that advertises a distress-call ( panic / sos button) and gets picked up by any phone with the corresponding app installed.
  So simply advertising som data and then change som specific advertising data when the button is pressed.
  While developing a long press will make the puck go back into a state where it can connect to the web IDE.

  I have 2 problems at the moment.
  1 When doing a long press the puck is not able to reconnect with the IDE.

  2 The app finds the puck but the serviceUUIDs list is empty. This list need to have at least one entry for iphone to let it be discovered in the background.
  Data retrived in the app :

  "F6:A1:EC:AF:EB:0F"
  isConnectable:null
  localName:"MyName"
  manufacturerData:null
  mtu:23
  name:"MyName"
  overflowServiceUUIDs:null
  rssi:-42
  serviceData:{00000019-0000-1000-8000-008­05f9b34fb: "dGVzdA==", 00001076-0000-1000-8000-00805f9b34fb: "AA=="}
  serviceUUIDs:null 
  solicitedServiceUUIDs:null
  txPowerLevel:null
  

  Puck Code:

  var downTime = 0;
  var presses = 1;
  var heartrate = 5;
  var distress = false;
  
  function ledBlink(ledId, duration, loops) {
    digitalWrite(ledId, true);
    let loop = loops || 1;
    setTimeout(function () {
      digitalWrite(ledId, false);
      if(loop > 1) {
        loop--;
        setTimeout(function () {
          // be off for same amount of time
          ledBlink(ledId, duration, loop);
        }, duration);
      }
    }, duration);
  }
  
  
  function onUp() {
    const lengthOfPress = Date().ms - downTime;
    console.log('Button down for ' + lengthOfPress + 'ms');
    if(lengthOfPress > 1000) {
     longPress();
    } else {
      shortPress();
    }
  }
  
  function onDown() {
    downTime = Date().ms;
    setWatch(onUp, BTN, { edge: 'falling', debounce: 50 });
  }
  
  function longPress() {
    ledBlink(LED3, 100, 3);
    IdeConnect();
  }
  
  function shortPress() {
    ledBlink(LED1, 100, presses);
    presses++;
    beaconMode();
  }
  
  function IdeConnect() {
    // reset ble to connect with Espurino web IDE
    ledBlink(LED3, 200, 10);
    NRF.setServices(undefined, { uart: true });
    NRF.setAdvertising({});
  }
  
  function beaconMode() {
    // advertise some data to everyone in range
    distress = !distress;
    if(distress){
      ledBlink(LED1, 200, 3);
    } else {
      ledBlink(LED2, 200, 3);
    }
  
    // from exaple code
    NRF.setServices({
      0x180D: { // heart_rate
        0x2A37: { // heart_rate_measurement
          notify: true,
          value : [0x06, distress],
        }
      }
    }, { advertise: [ '180D' ], uart: false });
  
    NRF.setAdvertising(
      {
       0x1076 : [distress], // change bit to filter out distresscalls
       0x19 : ['t','e','s','t'] // some identifier
      }
      ,
      {
        name: 'MyName',
        showName: true,
        connectable: false,
        discoverable: true,
        manufacturer: 0x0590,
        manufacturerData:[distress],
      });
  }
  
  
  setWatch(onDown, BTN, { repeat: true, edge: 'rising', debounce: 50 });
  
  
  //save();