开发者您好，可以采取以下方式解决：

通过应用层的usbManager获取到usb的句柄传到native层去使用，示例代码如下：

import { hilog } from '@kit.PerformanceAnalysisKit';
import testNapi from 'libentry.so';
import { usbManager } from '@kit.BasicServicesKit';
import { promptAction } from '@kit.ArkUI';

@Entry
@Component
struct Index {
  @State message: string = 'Hello World';

  showToast(msg: string) {
    promptAction.showToast({
      message: msg,
      duration: 1500,
    });
  }

  build() {
    Row() {
      Column() {
        Text(this.message)
          .fontSize(50)
          .fontWeight(FontWeight.Bold)
          .onClick(() => {
            let deviceList: Array<usbManager.USBDevice> = usbManager.getDevices();
            if (deviceList.length <= 0) {
              this.showToast('未发现龙脉Ukey! ');
              return;
            }
            console.log(`devicesList = ${JSON.stringify(deviceList)}`);

            let find = false;
            let index = 0;
            for (let dev of deviceList) {
              if (dev.vendorId == 1372) {
                if (!usbManager.hasRight(dev.name)) {
                  usbManager.requestRight(dev.name);
                }
                find = true;
                break;
              }
              index++;
            }

            let devicepipe: usbManager.USBDevicePipe = usbManager.connectDevice(deviceList[index]);
            let fd: number = usbManager.getFileDescriptor(devicepipe);
            testNapi.skf_TestLed(fd);
            this.showToast(index + "  :  " + fd + "  " + deviceList[0].vendorId + "  " + deviceList[index].vendorId);
          })
      }
      .width('100%')
    }
    .height('100%')
  }
}

static napi_value NAPI_Global_skf_TestLed(napi_env env, napi_callback_info info) {
    napi_value result;
    size_t argc = 1;
    napi_value argv;
    napi_get_cb_info(env, info, &argc, &argv, nullptr, nullptr);
    int32_t fd = 0;
    napi_get_value_int32(env, argv, &fd);
    OH_LOG_INFO(LOG_APP, "fd: %d", fd);
    static libusb_context *ctx = NULL;
    if (NULL == ctx) {
        struct libusb_init_option options[] = {
            {
                .option = LIBUSB_OPTION_NO_DEVICE_DISCOVERY,
                .value = {.ival = NULL},
            },
        };
        OH_LOG_INFO(LOG_APP, "%s %s", "libusb_init1", "start");
        OH_LOG_Print(LOG_APP, LOG_INFO, LOG_DOMAIN, LOG_TAG, "Failed to libusb_init1");
        int r = libusb_init_context(&ctx, options, 1);
        OH_LOG_Print(LOG_APP, LOG_INFO, LOG_DOMAIN, LOG_TAG, "Failed to libusb_init1");

        if (r < 0) {
            OH_LOG_INFO(LOG_APP, "%s %d", "libusb_initfail", libusb_error_name(r));
        }
        OH_LOG_INFO(LOG_APP, "%s %d", "libusb_init2", r);
    }
    libusb_device_handle *handle = NULL;
    int r = libusb_wrap_sys_device(ctx, (intptr_t)fd, &handle);
    OH_LOG_INFO(LOG_APP, "%s %d", "libusb_wrap_sys_device", r);
    if (0 == r) {
        OH_LOG_INFO(LOG_APP, "%s", "libusb_wrap_sys_device ok");
    }
    napi_get_undefined(env, &result);
    // 获取设备列表
    libusb_device **devices;
    ssize_t cnt = libusb_get_device_list(ctx, &devices);
    if (cnt < 0) {
        std::cerr << "Failed to get device list: " << libusb_error_name(cnt) << std::endl;
        libusb_exit(ctx);
    }
    // 遍历设备列表并获取第一个设备的文件描述符
    for (ssize_t i = 0; i < cnt; i++) {
        libusb_device *device = devices[i];
        libusb_device_descriptor desc;
        // 获取设备描述符
        r = libusb_get_device_descriptor(device, &desc);
        if (r < 0) {
            std::cerr << "Failed to get device descriptor: " << libusb_error_name(r) << std::endl;
            continue;
        }
        // 打印设备信息
        std::cout << "Device " << i << ": ID " << std::hex << desc.idVendor << ":" << desc.idProduct << std::dec
                  << std::endl;
        // 打开设备
        libusb_device_handle *handle;
        r = libusb_open(device, &handle);
        if (r != 0) {
            std::cerr << "Failed to open device: " << libusb_error_name(r) << std::endl;
            continue;
        }
        // 关闭设备
        libusb_close(handle);
        break; // 只处理第一个设备
    }
    // 释放设备列表
    libusb_free_device_list(devices, 1);
    // 退出libusb
    libusb_exit(ctx);
    return result;
}

权限配置：

"requestPermissions":
[
  {
    "name": "ohos.permission.ACCESS_EXTENSIONAL_DEVICE_DRIVER"
  }
]