Hello, I need to read the wifi rssi dbm of my esp32

If you do a

scan

(https://libs.toit.io/net/wifi/library-summary#scan(3%2C0%2C0%2Cpassive%2Cperiod-per-channel-ms ) you should get

AccesPoint

(https://libs.toit.io/net/wifi/class-AccessPoint) objects back which have an rssi field

👍

The

.do

doesn't do that. So either use a

for i := ...

loop, or

list.size.repeat: | i | ...

How can I read the rssi of Jaguar's (or Artemis's?) wifi connection? Scan returns a list, but which SSID is Jaguar connected to? I can wifi.open an ap and get the rssi but that requires ssid AND password. Is there a way to network := jaguar.open.wifi ? Do I have to resort to saving a spare copy of wifi credentials? THANK YOU.

Good question. I'm not sure it's possible, but I will have a look tomorrow. It might also be possible to read the wifi configuration that Jaguar uses

Works great! I could never find correct syntax for wifi.open null. RSSI is printing as "1.0" or "0.98461538461538467004" or "0.96923076923076922906". What is that in dB?

I had to look at the code myself 🙂 (not 100% sure it was intended to be used this way). The value is basically what we get from the esp-idf slightly modified:

/**
  Returns the signal strength of the current access point association
    as a float in the range [0..1].

  Throws an exception if this network isn't currently connected to an
    access point.
  */
  signal-strength -> float:
    info := (client_ as WifiServiceClient).ap-info handle_
    rssi := info[WIFI-SCAN-RSSI_]
    // RSSI is usually in the range [-100..-35].
    rssi = min 65 (max 0 rssi + 100)
    return rssi / 65.0

It's perfect! Thank you.