nRf51822 Beacon remote gpio

[gennaro82]

Hi guys,

I'm playing with a beacon kit, nRF51822-BK. It works out of box, no problem but I have a simple question. One of our customer asked me if is possible to control by smartphone the gpio of a beacon. For example when you are in the range of a beacon play with his the leds. I know there are a lot other ways to do that but I'm studying a way to integrate that solution in the beacon hw. By my side what I know, I need to write a new Bluetooth LE GATT Service that run concurrently with beacon service. I think that I could get in some troubles, for example while a client is connected to the gpio service the beacon signal stops to work, so maybe is better to drop the connection asap. Another problem could be race condition, I don't want pairing the devices and all devices could send packet to the gpio service concurrently , but it's not my business.

But the main question is, can I expose a new service without modify the soft_device of beacon?

Thanks in advice for your help

[Stefan Birnir Sverrisson]

Hi

A peripheral device normally can only connect to one device at a time. It is possible to do connectable advertising and allow a scanner to connect. The Beacon kit FW 1.1.1 is a connectable beacon, but the ble_app_beacon example in the SDK is not connectable. Here is a link that attempts to explain how the Beacon kit FW 1.1.1 works.

When connected, you can advertise in non-connectable mode, supported first in S110 7.0.0. I think it is just a matter of calling the advertising_start function when the peripheral device is connected.

Here is also additional info on the beacon kit.

[gennaro82]

ok Thanks, but before to mark I need to check If everything is clear by my side :P

[gennaro82]

OK i did it. Thanks

[spatel]

Hello gennaro82,

i m also working on beacon remote GPIO change and i want beacon to work in always connected mode.I have a basic Beacon Firmware V1.1.1 Can u post source code for above change.