Normal Bluetooth and Bluetooth Low Energy

[Vicent Tse]

Hi all, I'm puzzled about the relationship between normal BT and BLE, Is BLE connection is based on normal BL connection? And if it's integrant to set up a BL connection before using BLE connection? Thanks!

[Stefan Birnir Sverrisson]

Hi Vicent

All Nordic BLE chips do not support classic Bluetooth, i.e. our chips do not support Bluetooth BR/EDR.

[Vicent Tse]

Thanks for your response, Stefan. So you mean that all the pair requests from chips are for BLE connection? Once my device begins advertising, on my iPhone, in SETTINGS-->BLUETOOTH, I find that iPhone would connect my device automatically, is this connection a BLE connection? And sometimes, the connection would change between disconnected and connected randomly, I even guess that our device is broken. I'm appreciative if you could give more idea? Thank you.