Can the NRF52 output an unmodulated continuous tone at a specific channel?

[ray]

Hi all,

I'm a grad student trying to innovate on the BLE concept. I require a continuous signal as a source: preferably unmodulated, but a long duty cycle could also work. Would the NRF52 (or any other Nordic bluetooth device) be able to accomplish this?

Thank you, Ray

[Øyvind Karlsen]

Hi,

Yes you can do this. I recommend using either the radio test example or alternately direct test mode. Both implement this already and can be found in the SDK under nRF5_SDK_11.0.0_89a8197\examples\peripheral\radio_test and nRF5_SDK_11.0.0_89a8197\examples\dtm\direct_test_mode.

Best regards,

Øyvind

[ray]

Thank you! It's one part of a thesis focused on enabling applications in energy harvesting. And you are correct; a two-node solution with existing Bluetooth infrastructure (like in the Ensworth paper) would be a very desirable feature. In the worst case, my current plan is to use an NRF8001 as the CW source, and NRF52 as the receiver.

Would you know what Bluetooth chipsets are used for streaming audio? Those must be full-duplex, right?