BLE 4.2 support

RE: BLE 4.2 support

Simonr — Mon, 24 Feb 2020 14:05:00 GMT

Implementing something that was released in Bluetooth 4.2 should prevent your device from being connected to Bluetooth 4.1 devices. If you, for example, implement LESC (Low Energy Secure Connections) in your application, only BLE 4.2 devices and newer will be able to connect to your device. This can be done by setting the SEC_PARAM_LESC define to 1 in your application. Many of our examples do this already, see I.E. the ble_app_gls example.

Best regards,

Simon

RE: BLE 4.2 support

Roei — Mon, 24 Feb 2020 10:43:51 GMT

In terms of security, I would like that devices with BLE under 4.2 will not be able to connect.

Can I solve this issue with defining MITM protection?

RE: BLE 4.2 support

Simonr — Mon, 24 Feb 2020 10:29:48 GMT

The nRF52840 supports Bluetooth 5.0. The Bluetooth specification allows all BLE devices to connect to one another even if they're not the same version. Devices supporting newer versions of BLE will not be able to use the features specific to the newer versions when connected to older devices, but there's nothing stopping them from connecting to older BLE versions.

Best regards,

Simon