iw command to set wifi channel failing

[BDP42]

Hi,

We have a custom board using a WILC3000 WiFi device.

I am attempting to set the WiFi channel using the iw command. The driver has been loaded and the wlan0 interface is created. Here's what I get in response.

iw dev wlan0 set channel 11 HT20 command failed: Device or resource busy (-16)

I've tried it with the wlan0 interface up and down but always get the same error.
I tried it using phy instead of dev but got the same result.

Would you expect this command to work or am I doing something wrong here?

Thanks
Bruno