memset (_polypress, 0, sizeof (_polypress));
memset (_controller_msb, 0, sizeof (_controller_msb));
memset (_controller_lsb, 0, sizeof (_controller_lsb));
memset (_polypress, 0, sizeof (_polypress));
memset (_controller_msb, 0, sizeof (_controller_msb));
memset (_controller_lsb, 0, sizeof (_controller_lsb));