This was excatly what I experienced whan changing the clock devider value and not having added the 47k pull ups.
You got it fixed by performing the steps you describe?
This is excatly what I experienced when trying to change the clock devider, before adding any pull up to the SDIO.
After having added the the 47k pull ups, I'm stuck with a "Could not set AMPDU parameters".
Edit: Super, the first was sent from my iPhone and did not seems to have been accepted, but after creating the second post the first also showed up. So sorry for repeating my self
Yes, that's most likely a hardware problem(wired setup), it's working even in our custom h/w without these sdio frequency change
Just to clearify, you have it running on both a prototype setup and a custom hardware?
All the connections on my prototype setup seems to be OK, and reads 0-1ohm, so mabey the length of the wires are not matching or too long?
The custom HW has also been fitted with the 47k pull ups ?
To setup STM32F429 Discovery board with BCM43362 module please take a look at this blog, SN8000 WiFi Module with STM32F429 Discovery Board. For STM32F429 Discovery board there are no external pull up needed.
I have made some progress with the scan snip. I noticed that the guides stated that the SN8000 module should be plugged into the EVK board. As soon as I did this, it started scanning and seems to be running fine.
I'm trying to get it to work when it is not plugged into the EVK board, and simply use the SN8000 as a stand-alone module. For what I can see on the SN8000 schematic, the only thing I can see is 47k pull up resistors on the data lines (except CLK) and the VDD & GND.
I just received my custom PCB, it works like a charm. The PCB does not have pull up resistors and STM32F4 MCU and the WiFi module is very close to each other.
My conclusion is that many of the problems experienced, was caused by the use of prototype setup.
Glad to know your module is working ..