BLE Event Trigger - Keep HFCLOCK always on

[danib18]

Hello!

i use a nRF52833 DK and the nrf connect sdk for developing Bluetooth LE applications. I use the Bluetooth Event Trigger extension to toggle GPIO pins with every BLE event as described here.
In the nRF Desktop application (here), internal modules can be altered to always use the high frequency clock in BLE scheduling. 

Is it possible to use enable this functionality in my application to always use the high frequency clock?

Best regards
Daniel

[Vidar Berg]

Hello Daniel,

Yes, you can use the onoff API to request the HF crystal oscillator as demonstrated here: https://github.com/nrfconnect/sdk-nrf/blob/e895510c7cad107d815070c02923e82564ed0337/samples/peripheral/radio_test/src/main.c#L15. 

The crystal oscillator will not be stopped until all users have released their request.

Best regards,

Vidar