LongJogger

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• Configure Puck.js as an iBeacon

  @LongJogger started

  • 9 comments
  • 4,343 views

  @Gordon replied
• Configure Puck.js as an iBeacon

  in Puck.js, Pixl.js and MDBT42 • 7 years, 11 months

  

  I had two issues during testing:

  1. I think the parameters in the set methods were in a wrong order: typedarr.set(array [,offset])
     
  2. NRF.setAdvertising has not accepted the Uint8Array as object: Error message "Uncaught TypeError: Expecting object or undefined, got Uint8Array"
     
     

  But, with some small adjustments below, I got your code running. The device is then successfully recognized as an iBeacon.

  var advertise = function(options) {
    var d = new Uint8Array([
      0x02, // Number of bytes after first AD structure
      0x01, // BLE_GAP_AD_TYPE_FLAGS
      0x04, // BLE_GAP_ADV_FLAG_BR_EDR_NOT_SUPPORTED
      0x1A, // Length
      0xFF, // BLE_GAP_AD_TYPE_MANUFACTURER_SPECIFIC_DATA
      0x4C, 0x00, // 0x004C == Apple
      0x02, 0x15, // iBeacon type + length
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,// iBeacon proximity uuid
      0, 0, // major
      0, 0, // minor
      0xc5]); // 2'c complement RSSI at 1 meter distance in dBm
    
    d.set(options.uuid,9);
    if (options.major!==undefined) d.set([options.major>>8,options.major],25);
    if (options.minor!==undefined) d.set([options.minor>>8,options.minor],27);
    if (options.rssi!==undefined) d.set([(options.rssi<0)?(options.rssi+256):options.rssi],29);
    
    var e = [].slice.call(d);
    NRF.setAdvertising(e, {interval:100});
  };
  
  advertise({
    uuid : [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], // ibeacon uuid
    major : 0x0001, // optional
    minor : 0x0001, // optional
    rssi : -59 // optional RSSI at 1 meter distance in dBm
  });
  

  Perhaps you have a better idea how to pass the Uint8Array to the NRF.setAdvertising function.

• Configure Puck.js as an iBeacon

  in Puck.js, Pixl.js and MDBT42 • 7 years, 11 months

  

  An own iBeacon module would be great and definitely add value also for other users.

  Changeable input parameters for an iBeacon module would be:

  1. UUID => Bytes 9 - 24
     
  2. Major: integer value between 0 and 65535 => Bytes 25 - 26
     
  3. Minor: integer value between 0 and 65535 => Bytes 27- 28
     
  4. Calibrated TX Power: integer value between 0 and 255 => Byte 29
     
• Configure Puck.js as an iBeacon

  in Puck.js, Pixl.js and MDBT42 • 7 years, 11 months

  

  Thanks Gordon, for your fast reply.

  I also tried to just use the middle part of the example, but didn't realize that I have to change the flags. Your code above works perfectly!

  Thanks again, for your help.

• Configure Puck.js as an iBeacon

  in Puck.js, Pixl.js and MDBT42 • 7 years, 11 months

  

  Has anyone already managed to turn Puck.js into an Apple iBeacon?

  So far, I used these information from Stackoverflow:
  http://stackoverflow.com/questions/18906988/what-is-the-ibeacon-bluetooth-profile
  and the NRF.setAdvertising function to test with the following code:

  var g = [0xd6, 0xbe, 0x89, 0x8e, 0x40, 0x24, 0x05, 0xa2, 0x17, 0x6e, 0x3d, 0x71, 0x02, 0x01, 0x1a, 0x1a, 0xff, 0x4c, 0x00, 0x02, 0x15, 0xe2, 0xc5, 0x6d, 0xb5, 0xdf, 0xfb, 0x48, 0xd2, 0xb0, 0x60, 0xd0, 0xf5, 0xa7, 0x10, 0x96, 0xe0, 0x00, 0x00, 0x00, 0x00, 0xc5, 0x52, 0xab, 0x8d, 0x38, 0xa5];
  NRF.setAdvertising(g);
  

  When sending the code to Puck.js, I get the following error message:

  Uncaught Error: Got BLE error code 9
   at line 1 col 21
  NRF.setAdvertising(g);
                      ^
  =undefined
  

  Any ideas? Thanks in advance!