Notification feature

[Jax]

Hi

I have a project use nrf52 to have a purpose below.

Maybe after some pairing process with smartphone.

The user can trigger the device(nrf52, may press a button).

The smartphone can have a notification that the button has been pressed without open App.

Which nrf52 SDK sample or profile that I can used?

Thanks

[Petter Myhre]

There is no standard button profile. I recommend using ble_app_uart as a starting point.

Then instead of sending a notification when something is received on the UART you can send a notification when a button is pressed.

The button implementation can be done in several ways, one way is by using the bsp example as a starting point.

What do you mean by without open app? Never open app? Or having the app running in the background?

[Jax]

Hi Peter Thanks for your quickly reply. I understand about ble_app_uart example. ble_app_uart need user open the app and connect to the device then send uart command. We have already use this for the product. But in iOS app, it's not allow background service in iOS, so i can't run a background service to accept uart command and make some alarm to user when user pressed HOME Key on Iphone. Even after Android 8.0 policy, it alse kill the background server after app onPause. How to implement this feature on BLE?

[Petter Myhre]

If it is not allowed by iOS, I'm not sure it is much we can do about it.

[Jax]

Maybe corebluetooth can implement this feature. Does any exameple for corebluetooth at nrf SDK?

[Petter Myhre]

Here is a list of our iOS apps, the source code of some of them can be found here.