RE: nRF7002 Init hang

Elfving — Wed, 10 Sep 2025 09:06:42 GMT

Good that things are improving, though let me know when you've tried commisioned the board. If that doesn't help, it would also be great if you could try and see if you are able to reproduce this on a DK.

Regards,

Elfving

RE: nRF7002 Init hang

lennartkoopmann — Tue, 09 Sep 2025 19:19:12 GMT

Thank you and sorry for the delay, I just returned from a business trip. The board is not commissioned yet, but I know that this will need to happen before I can fully use it.

I was able to find an issue with reverse IOVDD and BUCKEN polarity. I am now making it much further in the nRF7002 init:

```
[00:00:00.001,434] <dbg> wifi_nrf_bus: rpu_gpio_config: GPIO configuration done...
[00:00:00.003,662] <dbg> wifi_nrf_bus: rpu_pwron: Bucken = 1, IOVDD = 1
[00:00:00.003,723] <inf> wifi_nrf_bus: SPIM spi@40004000: freq = 8 MHz
[00:00:00.003,753] <inf> wifi_nrf_bus: SPIM spi@40004000: latency = 0
[00:00:00.003,814] <dbg> wifi_nrf_bus: rpu_wrsr2: Written 0x1 to WRSR2
[00:00:00.003,936] <dbg> wifi_nrf_bus: spim_read_reg: err: 0 -> 0 0 0 0 0 0
[00:00:00.003,936] <dbg> wifi_nrf_bus: spim_wait_while_rpu_wake_write: RDSR2 = 0x0
[00:00:00.005,157] <dbg> wifi_nrf_bus: spim_read_reg: err: 0 -> 0 0 0 0 0 0
[00:00:00.005,157] <dbg> wifi_nrf_bus: spim_wait_while_rpu_wake_write: RDSR2 = 0x0
[00:00:00.006,378] <dbg> wifi_nrf_bus: spim_read_reg: err: 0 -> 0 0 0 0 0 0
[00:00:00.006,378] <dbg> wifi_nrf_bus: spim_wait_while_rpu_wake_write: RDSR2 = 0x0
[00:00:00.007,659] <dbg> wifi_nrf_bus: spim_read_reg: err: 0 -> 0 0 0 0 0 0

```

It is reaching my event loop after this. Interestingly, trying to read RDSR instead of RDSR2, I am seeing good results:

```
[00:00:52.795,867] <inf> n70probe: RDSR=0x42
[00:00:52.895,996] <inf> n70probe: RDSR=0x42
[00:00:52.996,124] <inf> n70probe: RDSR=0x42
[00:00:53.096,252] <inf> n70probe: RDSR=0x42

```

RE: nRF7002 Init hang

Elfving — Tue, 02 Sep 2025 09:13:27 GMT

Hi,

Have you commisioned the board? Ie. mainly written to the OTP?

To make sure things are connected correctly, you could also try the bustest at /tests/boards/nrf/nrf70/bustest in the SDK.

Regards,

Elfving