The code `#define WIFI_AUTH_OPEN ENC_TYPE_NONE` is a **preprocessor macro definition**...

The code #define WIFI_AUTH_OPEN ENC_TYPE_NONE is a preprocessor macro definition in C or C++. Here's what it does:

• Using #define, it assigns the value ENC_TYPE_NONE to the macro (WIFI_AUTH_OPEN).
• The preprocessor will replace all occurrences of WIFI_AUTH_OPEN in the code with ENC_TYPE_NONE before the compilation process.

In Context

This is likely used in Wi-Fi or networking code to specify an "open" Wi-Fi authentication type, meaning a Wi-Fi network with no encryption (unencrypted or open access). ENC_TYPE_NONE probably comes from a library or framework that enumerates Wi-Fi encryption/authentication types (e.g., WPA, WPA2, WEP). By defining WIFI_AUTH_OPEN as ENC_TYPE_NONE, it might make the code easier to understand by giving it a more descriptive name for this specific purpose.

For example:

if (wifiAuthType == WIFI_AUTH_OPEN) {
    // Handle open network connection
}

This is more readable than directly using ENC_TYPE_NONE in the code.