Changing QPSI clock frequency with nRF Connect SDK

[LKoi]

Hello,

i am using the Wi-Fi: Scan sample with the nRF 7002 Deveolpment Kit.

I am trying to alter the clock frequency/QPSI mode (Dual/Quad) of the QSPI Bus connecting the nRF7002 with its host MCU.

I did some changes to the matching parameters in the Devicetree inside nRF Connect SDK, which seem to have no effect on the communication's behavior.

Since i can't find out how to apply these changes correcty, i am asking for help!

Thank you in advance for your replies

[Håkon Alseth]

Hi,

 

What did you change?

Here's a simplified overlay where you can alter the qspi-frequency:

&qspi {
	nrf70: nrf7002@1 {
		compatible = "nordic,nrf7002-qspi";
		status = "okay";
		qspi-frequency = <24000000>;

	};
};

 

 

Remember to delete your build folder and regenerate it after adding a .overlay.

 

Kind regards,

Håkon

[LKoi]

Thank your for your reply Håkon.

That is the exact location where i did described changes.

Can you describe which folder is to be deleted and how to regenerate it?

Kind regards,

Leon

[Håkon Alseth]

Hi,

 

The changes in device tree can be added to your boards/<board>.overlay, which is nrf7002dk_nrf5340_cpuapp.overlay if you use the nRF7002-DK board.

 

The build folder is generated when you select your project and configure (ie. select the board to compile for etc) - if you just create a new build, the above mentioned overlay should be selected.

 

Kind regards,

Håkon

[LKoi]

Hi,

thank you for your help!

Kind regards,

Leon