RN42 master connection to nRF51422

[BT_confused]

I have a legacy RN42 BT2.1+EDR running in a system as the network master that I need to connect/pair with a nRF51422 BLE dev kit, and am having problems. The BLE just doesn't want to pair, I've searched online and am getting mixed messages as to whether BT4.x BLE can slave to a 2.1 master.

Any input/thoughts appreciated.

[Anders Strand]

Hello.

Bluetooth 4 (Bluetooth Smart / Bluetooth Low Energy) cannot be paired with bluetooth 2 devices. Some devices are so called "Bluetooth Smart Ready". This means that they support both bluetooth versions. Examples of these devices are phones and computers.

-Anders