Automatic connection to nrf51 when in range.

[Yacire]

Hi NordicSemiconductor's community,

I have a basic question about connection to a BLE peripheral. I use the SDK_10.0.0 and s110_v8.0.0.

I want to know how to implement a fonctionnality in my BLE product; I want the Android smartphone connect automatically to the device when he is in range.

Now i can connect to it, by doing a scan on my application and with my peripheral advertise. But i don't have any idea about how connect to my device automatically ??

Thanks for your help, Best regards.

[Aleksander Nowakowski]

Sure, but it's not that simple. It still has to be your app, but instead of an Activity, you have to write a service that will operate in the background. From a service you may do normal BLE operations. If you want your app (service) to be started when phone boots up, you also had to write a broadcast receiver that will listen for boot completed event. Please, read about services and broadcast receivers on Android website. In nrf toolbox we also connects in a service, for example in Proximity profile.

[Yacire]

Thanks a lot, it's clear now,

But it is not energy efficient from the smartphone point of view, to continually scanning in background ? I will test this design, and see if the smartphone battery is Ok^^.