Create BLE Beacon

[sialalex]

Is there a way to advertise a BLE Beacon with this lib? @Emill

Thanks in advance!

[Emill]

Sure.

If you follow the peripheral example at the readme page, modify the part that uses the AdvertisingDataBuilder to create advertising data that matches your desired beacon format. See https://github.com/Emill/node-ble-host/blob/master/docs/api/advertising-data-builder.md for documentation.

If you do not want your device to be connectable (i.e. it should only advertise), you can add advertisingType: 'ADV_NONCONN_IND' or advertisingType: 'ADV_SCAN_IND' to the advertising options, depending on if you need scan response data or not.

[sialalex]

OK - thank you!

Do you have an example for an beacon? It is not important which type (iBeacon, AltBeacon,...)

[sialalex]

I try to create something like that, but I am not able to create it!

[Emill]

Could you post a screenshot of what pops up when you press RAW?

[sialalex]

So here is the beacon i actually need - with the raw data!

[Emill]

I think this code should work to replicate that beacon, by modifying "Full GATT Server Example (Peripheral)" accordingly:

const advDataBuffer = new AdvertisingDataBuilder()
                        .addFlags(['leGeneralDiscoverableMode', 'brEdrNotSupported'])
                        .addManufacturerData(0x004C, Buffer.from([ // Apple's manufacturer ID is 0x004C
                            0x02, // Type: Beacon
                            0x15, // Length of following data: 21
                            0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, // UUID
                            0x11, 0x22, // Major
                            0x33, 0x44, // Minor
                            0x100-77])); // RSSI at 1m
                        .build();
manager.setAdvertisingData(advDataBuffer);

const scanRspDataBuffer = new AdvertisingDataBuilder()
                        .addLocalName(/*isComplete*/ true, deviceName)
                        .build();
manager.setScanResponseData(scanRspDataBuffer);

startAdv();

function startAdv() {
    manager.startAdvertising({advertisingType: 'ADV_SCAN_IND'}, connectCallback); // Make it non-connectable
}

Note that that RSSI value should be updated to match the TX power of your Bluetooth controller.