buf[0] = set_clear ? 1 : 0;
err = libusb_control_transfer(hdl, LIBUSB_REQUEST_TYPE_VENDOR, 0xa0,
0xe600, 0x0000, buf, 1, 100);
if (err < 0)
buf[0] = set_clear ? 1 : 0;
err = libusb_control_transfer(hdl, LIBUSB_REQUEST_TYPE_VENDOR, 0xa0,
0xe600, 0x0000, buf, 1, 100);
if (err < 0)