RE: RFCOMM vs. NUS

awneil — Wed, 09 Sep 2020 08:44:13 GMT

Carl Richard gave the answers regarding RFCOMM.

NUS is defined here: https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.0.0/ble_sdk_app_nus_eval.html

[quote userid="93197" url="~/community/f/wireless-forum/65733/rfcomm-vs-nus"]Why are there vendor specific UART emulation services?[/quote]

Because the Bluetooth SIG, in their wisdom (sic?), decided not to define a standard one!

Why on earth they would make such a glaring omission is anyone's guess. My guess would be that they wanted people to user properly defined Services - not just send arbitrary, unstructured data over a UART emulation?

RE: RFCOMM vs. NUS

Carl Richard — Wed, 09 Sep 2020 08:37:51 GMT

Hello, turboscrew.

RFCOMM is a Bluetooth Classic protocol and is not supported in Bluetooth Low Energy. Hence, it's not possible to use RFCOMM for BLE communication.

You can read more about this here and here.

Best regards,
Carl Richard