Use of an SPP profile in BLE stack

RE: Use of an SPP profile in BLE stack

Vidar Berg — Mon, 18 Mar 2024 15:51:06 GMT

Not sure if it helps, but the Python Bleak package (https://github.com/hbldh/bleak/blob/develop/examples/uart_service.py) includes an example that can communicate with the NUS service. I have tried this for testing, but I cannot comment on the quality of the package.

RE: Use of an SPP profile in BLE stack

SteveHx — Mon, 18 Mar 2024 15:27:38 GMT

Not the answer I wanted, but until some third party develops a Windoze driver to connect to NUS as a COM port, I'm stuck. I simply do not have the bandwidth for such a development at this time. The nFR52832 and 52840 would be far more useful in several upcoming projects if they could appear as a COM port.

RE: Use of an SPP profile in BLE stack

Vidar Berg — Mon, 18 Mar 2024 12:13:06 GMT

Hello,

The Serial Port Profile (SPP) is for Bluetooth Classic, and there isn't defined and equivalent profile for Bluetooth Low Energy. That's why we and some other chip vendors have created proprietary services to emulate SPP support. However, these proprietary implementations do not provide native OS support like SPP does (e.g., they won't enumerate as a COM port in the Device Manager). Therefore, to use the NUS service with built-in BT HW, you need a custom application that can interface with the NUS service using the Bluetooth framework on your OS.

Best regards,

Vidar