环境：windows & linux & Zebra打印机gt820

windows:

        之前安装了Zebra打印机官方驱动，所以先卸载掉驱动。再安装Zadig，用Zadig工具来安装WinUSB驱动。

zadig下载：Zadig - USB driver installation made easy

记住这两个数据：vendorId：0A5F productId :00C1 。这是打印机的供应商ID，和产品ID，程序中要用到。

Linux：ubuntu22.04 x86_64已经内置usbfs，直接下载libusb库：libusb - Browse /libusb-1.0/libusb-1.0.27 at SourceForge.net

解压后安装

./configure --prefix=/home/a/libusb-1.0.27/build
make -j 4
sudo make install

linux查看vendorid productId命令：lsusb

将头文件和库加到项目中。

测试代码：

void testPrintZplDirectUsb()
{
	libusb_context* ctx = NULL;
	libusb_device** devs;
	libusb_device_handle* dev_handle = NULL;
	ssize_t cnt;
	//int i;

	// 初始化libusb库
	if (libusb_init(&ctx) < 0) {
		printf("初始化失败\n");
		return;
	}

	// 枚举设备
	cnt = libusb_get_device_list(ctx, &devs);
	if (cnt < 0) {
		printf("枚举设备失败\n");
		return ;
	}
	printf("%d个设备找到\n", cnt);

	libusb_device* dev;
	int i = 0, j = 0;
	uint8_t path[8];

	while ((dev = devs[i++]) != NULL) {
		struct libusb_device_descriptor desc;
		int r = libusb_get_device_descriptor(dev, &desc);
		if (r < 0) {
			fprintf(stderr, "failed to get device descriptor");
			continue;
		}

		printf("%04x:%04x (bus %d, device %d)",
			desc.idVendor, desc.idProduct,
			libusb_get_bus_number(dev), libusb_get_device_address(dev));

		r = libusb_get_port_numbers(dev, path, sizeof(path));
		if (r > 0) {
			printf(" path: %d", path[0]);
			for (j = 1; j < r; j++)
				printf(".%d", path[j]);
		}

		printf("\n");

		if (desc.idVendor == 0x0a5f && desc.idProduct == 0x00c1)
		{
			获取handle方式一：
			//dev_handle = libusb_open_device_with_vid_pid(ctx, desc.idVendor, desc.idProduct);			
			//if (dev_handle != NULL) {
			//	int ok = libusb_claim_interface(dev_handle, 0);
			//	unsigned char data[] = "^XA^FO200,20^BY3^BCN,100,Y,N,N^FDDAe123456^FS^XZ";
			//	int dataSize = sizeof(data)/*+1*/;
			//	int actrueLeng = 0;
			//	int transferedBytes = libusb_bulk_transfer(dev_handle, 0x01, data, dataSize, &actrueLeng, 0);
			//	
			//	//int transferedBytes = libusb_bulk_transfer(dev_handle, 0x01, data, dataSize, &actrueLeng, 1000);
			//	if (transferedBytes < 0)
			//		printf("写入数据失败\n");
			//	else
			//		printf("写入%d字节数据成功\n", actrueLeng);
			//	libusb_close(dev_handle);
			//}

			//获取handle方式二：推荐
			int udev = libusb_open(dev, &dev_handle);
			if (LIBUSB_SUCCESS == udev && dev_handle)
			{
				//show device name 
				char buffer[256] = { 0 };
				//libusb_get_string_descriptor(dev_handle, desc.iProduct, 1, (unsigned char*)buffer, sizeof(buffer));
				int iRetTemp = libusb_get_string_descriptor_ascii(dev_handle, desc.iProduct, (unsigned char*)buffer, sizeof(buffer));
				if (iRetTemp > 0)
				{
					printf("device name:%s\n", buffer);
				}
				char* sb = "^XA^FO10,20^BY3^BCN,100,Y,N,N^FDDAe123456^FS^XZ";
				//char* sb = "^XA^FX Third section with bar code.^BY5,2,200^FO50,50^BC^FD12345678^FS^XZ";
				int ok = libusb_claim_interface(dev_handle, 0);
				printf("%d\n", ok);
				int actrueLeng = 0;
				ok = libusb_bulk_transfer(dev_handle, 0x01, (unsigned char*)sb, 50, &actrueLeng, 1000);
				printf("%d\n", ok);
				libusb_close(dev_handle);
			}

		}
	}

	libusb_free_device_list(devs, 1);

	libusb_exit(/*NULL*/ctx);

}