Method printf

src/fl/system/serial.h:277–292

template<typename... Args>
inline size_t SerialPort::printf(const char* format, Args... args) {
    if (!format) {
        return 0;
    }

    // Format into a fixed-size buffer using fl::snprintf
    char buffer[256];  // Maximum formatted string length
    int len = fl::snprintf(buffer, sizeof(buffer), format, args...);

    if (len < 0) {
        return 0;  // Formatting error
    }

    // Delegate to print() method
    return print(buffer);
}

// Global Serial object (Arduino-compatible)
// FL_MAYBE_UNUSED allows compiler to elide if not used