@AKindTexan : << want to be able to read the WiFi signal to noise ratio to determine if I have a bad WiFi environment. << It would be better off with something like kismet https://www.kismetwireless.net running in a workstation. May be, you are looking for a representation like this: https://en.wikipedia.org/wiki/Kismet_(software)#/media/File:Kismet-2.7.1-screenshot.gif Kismet has listed the supported wifi hardware in the above site. The typical capture is in the order of megabytes every second or even more, depending on the environment. Omega2+ has 802.11 b/g/n, (5 GHz support is optional in "n") up to 150Mbps as per specs, where as n itself is 54-600Mbps. Also, there are hardware analyzers that meets the needs of a CWAP. Thanks..

I suspect this is either a bug in the iwinfo binary, or just a missing bit of statistical data from the WiFi firmware. It doesn't work on mine either.

@Lee-James I found the answer and it works well. http://community.onion.io/topic/2765/wifi-scan ubus call onion wifi-scan "{'device':'ra0'}"

@Johan-Simons Thanks for the quick reply. Surprised to hear that removing the sigaddset doesn't work for you - it seems to do so for me. I will have a closer look and get back to you as and when I find anything. Thanks for the info on how you are building - this implies that the extra memory usage for new-gpio is down to the extra code functionality

Thank you for your reply @boken-lin , I will test with usb wifi adapter to be safe. I hope I wont need, but better safe than sorry.

How was the test result? I am quite interested in it.