C++ (Cpp) libusb20_dev_reset示例

示例#1

int
usb_reset(usb_dev_handle * dev)
{
	int err;

	err = libusb20_dev_reset((void *)dev);

	if (err)
		return (-1);

	/*
	 * Be compatible with LibUSB from sourceforge and close the
	 * handle after reset!
	 */
	return (usb_close(dev));
}

示例#2

void
usb_port_reset_test(uint16_t vid, uint16_t pid, uint32_t duration)
{
	struct timeval sub_tv;
	struct timeval ref_tv;
	struct timeval res_tv;

	struct libusb20_device *pdev;

	int error;
	int iter;
	int errcnt;

	time_t last_sec;

	/* sysctl() - no set config */

	pdev = find_usb_device(vid, pid);
	if (pdev == NULL) {
		printf("USB device not found\n");
		return;
	}
	error = libusb20_dev_open(pdev, 0);
	if (error) {
		libusb20_dev_free(pdev);
		printf("Could not open USB device\n");
		return;
	}
	iter = 0;

	errcnt = 0;

	gettimeofday(&ref_tv, 0);

	last_sec = ref_tv.tv_sec;

	while (1) {

		gettimeofday(&sub_tv, 0);

		if (last_sec != sub_tv.tv_sec) {

			printf("STATUS: ID=%u, ERR=%u\n",
			    (int)iter, (int)errcnt);

			fflush(stdout);

			last_sec = sub_tv.tv_sec;
		}
		timersub(&sub_tv, &ref_tv, &res_tv);

		if ((res_tv.tv_sec < 0) || (res_tv.tv_sec >= (int)duration))
			break;

		if (libusb20_dev_reset(pdev)) {
			errcnt++;
			usleep(50000);
		}
		if (libusb20_dev_check_connected(pdev) != 0) {
			printf("Device disconnected\n");
			break;
		}
		iter++;
	}

	libusb20_dev_reset(pdev);

	libusb20_dev_free(pdev);
}