Mesh SSID Support with Best RSSI Node Selection for WiFiNINA

[Jakobcondoctor]

My application scans available WiFi networks for a specific SSID ("xxxxxx") and I need to be able to connect to the node with the best RSSI.
However, WiFiNINA lacks built-in support for handling mesh networks with the same SSID and selecting the optimal node based on signal strength or channel.

Here’s an overview of my current approach:

1. Scan with WiFi.scanNetworks().
2. Filter for my SSID and pick the best RSSI (e.g., -50 dBm over -90 dBm).
3. Connect using WiFi.begin().

For mesh networks (multiple APs, same SSID), I need the library to:

• Identify all nodes under one SSID.
• A way for me to connect to the node with the strongest RSSI.

I believe it’d greatly enhance WiFiNINA for IoT use cases like mine.

I’d be happy to provide more details or test any beta versions.

[wasteofpaint]

This behavior could be easily fixed with a quick change to the NINA Firmware (Not the library). I'm hopeful, (but not optimistic at this point) that it will be fixed in the upcoming NINA FW release.

The firmware should be configured to use WIFI_ALL_CHANNEL_SCAN, but instead it's set to WIFI_FAST_SCAN.
fixing this is just a one line change in this file NINA FW: arduino/libraries/wifi/src/WiFi.cpp

See below for more info:
arduino/nina-fw#75

[per1234]

Hi @Jakobcondoctor. Thanks for taking the time to submit an issue.

I see we have another report about this at #200.

It is best to have only a single issue per subject so we can consolidate all relevant discussion to one place, so I'll go ahead and close this in favor of the other.