libusb获取设备名

要获取libusb中设备的名称，您可以使用libusb_device_descriptor()函数获取设备描述符，然后使用libusb_get_string_descriptor_ascii()函数获取设备的字符串描述符以下是一个示例代码：

#include <stdio.h>
#include <libusb-1.0/libusb.h>

int main() {
    libusb_context *ctx = NULL;
    libusb_device **devs;
    ssize_t count;
    int r;

    r = libusb_init(&ctx);
    if (r < 0) {
        printf("Failed to initialize libusb\n");
        return 1;
    }

    count = libusb_get_device_list(ctx, &devs);
    if (count < 0) {
        printf("Failed to get device list\n");
        libusb_exit(ctx);
        return 1;
    }

    for (ssize_t i = 0; i < count; ++i) {
        libusb_device *dev = devs[i];
        struct libusb_device_descriptor desc;
        r = libusb_get_device_descriptor(dev, &desc);
        if (r < 0) {
            printf("Failed to get device descriptor\n");
            continue;
        }

        char manufacturer[256], product[256], serial[256];
        r = libusb_get_string_descriptor_ascii(dev, desc.iManufacturer, (unsigned char *)manufacturer, sizeof(manufacturer));
        if (r < 0) {
            printf("Failed to get manufacturer string descriptor\n");
        }

        r = libusb_get_string_descriptor_ascii(dev, desc.iProduct, (unsigned char *)product, sizeof(product));
        if (r < 0) {
            printf("Failed to get product string descriptor\n");
        }

        r = libusb_get_string_descriptor_ascii(dev, desc.iSerialNumber, (unsigned char *)serial, sizeof(serial));
        if (r < 0) {
            printf("Failed to get serial number string descriptor\n");
        }

        printf("Device %d: Manufacturer=%s, Product=%s, Serial=%s\n", i+1, manufacturer, product, serial);
    }

    libusb_free_device_list(devs, 1);
    libusb_exit(ctx);

    return 0;
}

这段代码使用libusb_get_string_descriptor_ascii()函数获取设备的制造商、产品和序列号字符串描述符，并将它们打印出来。

请确保已经安装了libusb库，并使用编译器将代码编译为可执行文件。运行该可执行文件后，您将看到打印出的设备列表，包括每个设备的制造商、产品和序列号。

希望对您有帮助！