public class serial_function
{
    public static final int MODE_READ = 1;
    public static final int MODE_WRITE = 2;

    public static native void Init( );

    public static native int CreateFile( String filename, int mode );
    public static native int SerialSetup( int baud, int handshake , int timeout);

    public static native int WriteFile( int handle, byte[] buffer, int count );
    public static native int ReadFile( int handle, byte[] buffer, int count );

    public static native void CloseFile( int handle );

    public static native int GetLastError( );
    public static native void SetLastError( int error );
}