Re-connect to strongest AP (TZ-1967)

[joe-sydney]

Checklist

• Checked the issue tracker for similar issues to ensure this is not a duplicate.
• Described the feature in detail and justified the reason for the request.
• Provided specific use cases and examples.

Feature description

I have multiple WiFi Access Points (APs) covering the same SSID. When the ESP32 TBR connects, it seems to connect to the closest AP (strongest signal, presumably). However, when it disconnects from this AP (e.g. if it was rebooted, etc), it then reconnects to another AP that may have very weak signal).

It would be good if the TBR could periodically check and re-connnect to the strongest (preferred) AP, eg:

1. periodically rescan, like how Tasmota does it, or
2. if re-scanning takes too long, perhaps we could configure a preferred BSSID in menuconfig, and connect to it whenever it is available.

Thanks for considering this.

Use cases

If the AP that the TBR is connected to is rebooted, etc, the TBR will reconnect to another which may be farther away and provide a weak signal. Once the original AP recovers, it would be good for the TBR to reconnect to it.

Alternatives

Need to reboot the TBR.

Additional context

No response

[zwx1995esp]

Hi, thanks for your issue. The feature you metioned is more like an application layer feature, so you can implement it in your APP layers. Here are some functions and examples you can refer to:

esp_wifi_sta_get_rssi can be used to obtain the RSSI of the currently connected AP.

When the RSSI drops below a certain threshold, the STA can perform a full-channel scan. After the scan, you will get a complete list of available APs, including details such as SSID, BSSID, and RSSI.

If you want to connect to a specific AP, you can initiate the connection using its BSSID.

You may refer to the example here for scanning usage: scan.c

[joe-sydney]

Thank you, I will try doing this. I will close this case.