Adaptive Frequency-Hopping

[Shahin97]

Hello, 

I will be designing a board using with nRF52833 with the NRF21540 for the added gain. Would it be possible to add adaptive frequency hopping? 

Thank you, 

Shahin

[Simonr]

Hi Shahin

We don't inherently support AFH, but my colleague made an example showcasing how to add QoS channel survey report. Have a look at this Github repo:

https://github.com/rick1082/sdk-nrf/commit/4ff39c34c671857b18f7f25cf51d855962beb6d4

You should be able to use the channel report to figure out the proper channel set to use and then send a channel update, basically working as AFH. Note that you would have to implement an algorithm to select the busy channel and send channel updates in order to set the channels you want to use, and this is not something we have available.

Best regards,

Simon

[Shahin97]

Simonr  Thank you for the reply. 

The project I am working on will be used in the US and EU. Adaptive frequency hopping will allow higher gain, How does Nordic intend for users to use the nrf21540 in these locations. 

[Simonr]

Hi Shahin

I'm not sure I understand what you mean here. In the EU, the maximum allowed dBm for short range devices it's 10dBm, so the nRF21540 will need to be configured to run at maximum 10dBm TX power. It can still be used, just not configured to the maximum TX power.

Best regards,
Simon