rgbToHex()

fl::string fl::wled::rgbToHex	(	u8	r,
		u8	g,
		u8	b )

Convert RGB components to hex string.

Parameters

r	Red component (0-255)
g	Green component (0-255)
b	Blue component (0-255)

Returns

Hex color string (format: "RRGGBB")

Definition at line 48 of file json_helpers.cpp.hpp.

                                                 {
    fl::string hex;
    hex.reserve(6);
 
    auto byteToHex = [](u8 val) -> fl::string {
        const char hexChars[] = "0123456789ABCDEF";
        fl::string result;
        result.push_back(hexChars[val >> 4]);
        result.push_back(hexChars[val & 0x0F]);
        return result;
    };
 
    hex += byteToHex(r);
    hex += byteToHex(g);
    hex += byteToHex(b);
 
    return hex;
}

References fl::FL_NO_EXCEPT, fl::g, and fl::hex.

Referenced by fl::WLED::getState().

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