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 installlinux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);}
