HIDIOCGFEATURE
case HIDIOCGFEATURE(0):
res = ioctl(fd, HIDIOCGFEATURE(256), buf);
err = ioctl(self->hidraw_fd, HIDIOCGFEATURE(sizeof(buf)), buf);
err = ioctl(self->hidraw_fd, HIDIOCGFEATURE(sizeof(buf)), buf);
err = ioctl(self->hidraw_fd, HIDIOCGFEATURE(sizeof(buf)), buf);
err = ioctl(self->hidraw_fd, HIDIOCGFEATURE(sizeof(buf)), buf);
err = ioctl(self->hidraw_fd, HIDIOCGFEATURE(sizeof(buf)), buf);
err = ioctl(self->hidraw_fd, HIDIOCGFEATURE(sizeof(buf)), buf);