Write hex value to a characteristic?

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•

Gordon

Can you run this on your Puck, with the PlayBulb's address? It could take a while to complete.

var gatt;
NRF.connect("c4:be:84:de:a9:ba").then(function(g) {
  gatt = g;
  console.log("Connected - finding services");
  return gatt.getPrimaryServices();
}).then(function(services) {
  print(services);
  console.log("Finding characteristics");
    function sender(resolve, reject) {
      if (services.length) {
        var service = services.shift();
        service.getCharacteristics().then(function(characteristics) {
          console.log("Service "+service.uuid+" => ", characteristics);
          sender(resolve, reject);
        }).catch(reject);
      } else  {
        resolve();
      }
    }
    return new Promise(sender);  
}).then(function() {
  gatt.disconnect();
  console.log("Done! Disconnected.");
});

It should dump what I thinks all the characteristics are - I've just noticed having some trouble grabbing the UUID from one smart bulb (I get "0x0000[vendor]") and the problems could be related?

•

pdominique in reply to @Gordon

Here you go:

Connected - finding services
[
  BluetoothRemoteGATTService {
    "uuid": "0x1800",
    "isPrimary": true, "start_handle": 1, "end_handle": 7 },
  BluetoothRemoteGATTService {
    "uuid": "0x1801",
    "isPrimary": true, "start_handle": 8, "end_handle": 8 },
  BluetoothRemoteGATTService {
    "uuid": "0xff02",
    "isPrimary": true, "start_handle": 9, "end_handle": 28 },
  BluetoothRemoteGATTService {
    "uuid": "0x180f",
    "isPrimary": true, "start_handle": 29, "end_handle": 32 },
  BluetoothRemoteGATTService {
    "uuid": "0x180a",
    "isPrimary": true, "start_handle": 33, "end_handle": 65535 }
 ]
Finding characteristics
Service 0x1800 =>  [
  BluetoothRemoteGATTCharacteristic {
    "uuid": "0x2a00",
    "handle_value": 3, "handle_decl": 2 },
  BluetoothRemoteGATTCharacteristic {
    "uuid": "0x2a01",
    "handle_value": 5, "handle_decl": 4 },
  BluetoothRemoteGATTCharacteristic {
    "uuid": "0x2a04",
    "handle_value": 7, "handle_decl": 6 }
 ]
Service 0x1801 =>  [  ]
Service 0xff02 =>  [
  BluetoothRemoteGATTCharacteristic {
    "uuid": "0x2a37",
    "handle_value": 11, "handle_decl": 10 },
  BluetoothRemoteGATTCharacteristic {
    "uuid": "0xfff8",
    "handle_value": 14, "handle_decl": 13 },
  BluetoothRemoteGATTCharacteristic {
    "uuid": "0xfff9",
    "handle_value": 16, "handle_decl": 15 },
  BluetoothRemoteGATTCharacteristic {
    "uuid": "0xfffa",
    "handle_value": 18, "handle_decl": 17 },
  BluetoothRemoteGATTCharacteristic {
    "uuid": "0xfffb",
    "handle_value": 20, "handle_decl": 19 },
  BluetoothRemoteGATTCharacteristic {
    "uuid": "0xfffc",
    "handle_value": 22, "handle_decl": 21 },
  BluetoothRemoteGATTCharacteristic {
    "uuid": "0xfffd",
    "handle_value": 24, "handle_decl": 23 },
  BluetoothRemoteGATTCharacteristic {
    "uuid": "0xfffe",
    "handle_value": 26, "handle_decl": 25 },
  BluetoothRemoteGATTCharacteristic {
    "uuid": "0xffff",
    "handle_value": 28, "handle_decl": 27 }
 ]
Service 0x180f =>  [
  BluetoothRemoteGATTCharacteristic {
    "uuid": "0x2a19",
    "handle_value": 31, "handle_decl": 30 }
 ]
Service 0x180a =>  [
  BluetoothRemoteGATTCharacteristic {
    "uuid": "0x2a25",
    "handle_value": 35, "handle_decl": 34 },
  BluetoothRemoteGATTCharacteristic {
    "uuid": "0x2a27",
    "handle_value": 37, "handle_decl": 36 },
  BluetoothRemoteGATTCharacteristic {
    "uuid": "0x2a26",
    "handle_value": 39, "handle_decl": 38 },
  BluetoothRemoteGATTCharacteristic {
    "uuid": "0x2a28",
    "handle_value": 41, "handle_decl": 40 },
  BluetoothRemoteGATTCharacteristic {
    "uuid": "0x2a29",
    "handle_value": 43, "handle_decl": 42 },
  BluetoothRemoteGATTCharacteristic {
    "uuid": "0x2a50",
    "handle_value": 45, "handle_decl": 44 }
 ]
Done! Disconnected.

Write hex value to a characteristic?

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