Cargo Features

esp-wifi-sys has no features set by default.

[dependencies]
esp-wifi-sys = { version = "0.3.0", features = ["esp32", "esp32s2", "esp32s3"] }
esp32

Exactly *one* chip MUST be selected via its feature:

esp32c2 esp32c3 esp32c6 esp32h2 esp32s2
esp32s3