Problems using nRF7002 with non-nRF MCU

[djgj]

Hello All,
I am trying nRF7002 shield on my non-nRF MCU and i am running the wifi sample app on zephyr (latest version as of today Aug 20)
I get this error most of the time when issuing "wifi" shell commands. however commands are successful 50% of the time.
Has anyone seen this before? should i enable or disable any kconfig for this?

Regards,

djgj

[runsiv]

Hi Djgj

Could you give a bit more information regarding your system? As we can't test for all devices, the test level will be lower on non Nordic hosts. Due to this, there might be compatibility issues with helper libraries, such as the download library.

Regards

Runar

[djgj]

Hi Runar,

We are using RT500 MCU (NXP) as our host MCU. I connected our host MCU with nRF7002 EK via SPI connection. 

I am running the basic WiFi shell application on zephyr:

https://github.com/zephyrproject-rtos/zephyr/tree/main/samples/net/wifi

All other configs are same as used with nRF5340 except the SPI interface part.

While debugging i also noticed this comment which can be related to my issue.
https://github.com/nrfconnect/sdk-nrfxlib/blame/main/nrf_wifi/hw_if/hal/src/hal_interrupt.c#L437

Do you know what this is about and how to mitigate this?

kindly let me know if you need more details.

Regards,

djgj

[Marte Myrvold]

Hi,

Thank you for providing additional debug information. I forwarded it internally and am waiting for a reply. If I have not heard anything by tomorrow, I will ask them for an update and get back to you.

Best regards,
Marte

[Marte Myrvold]

Hi,

I have not received a response yet but have asked for an update. I expect to hear something early next week.

Best regards,
Marte

[Marte Myrvold]

Hi,

djgj said:

I will verify the SPI frequency and voltage values on BUCKEN, IOVDD, and VBAT and confirm on it soon.

Do you have any updates on this?

What is the clock frequency of the host (RT595) that you are using? It seems to be pretty high. Can you clock it to 128 MHz, the same as the nRF5340, and collect the same logs as previously?

Best regards,
Marte

[Marte Myrvold]

Hi,

Are you still experiencing the issues in this ticket? If so, do you have an update on the questions in my previous reply?

Best regards,
Marte

[djgj]

Hi Marte,
    Thanks for the follow up. 

Yes i am still experiencing issues on this. I was so far testing on devkits.
To rule out any setup issues I will test it on our actual boards which arrived last week.
I tried changing the clock speeds too but it didn't too much.

I will capture the logs accordingly and will keep you posted on it soon by today or tomorrow.. 

Regards,

djgj

[Marte Myrvold]

Hi.

Have you been able to test with the new boards you received and collect logs?

Best regards,
Marte

[djgj]

Hello Marte,
    Apologies for the late reply. We were able to run nRF7002 in our actual board and we don't see this  specific issue there. I assume there is some powering/wiring issue when i was working with devkits. Also i used latest changes in zephyr to test these again. So probably one or the other fixed the issue for us.

Regards,

djgj

[Marte Myrvold]

Hi,

Thanks for the update. It is great to hear that it is working now!

Best regards,
Marte