Ubuntu中通过libusb访问USB设备

?Ubuntu?,????libusb????USB???????????????,??????libusb???USB?????:

#include 
#include 

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

    // ???libusb?
    if (libusb_init(&ctx) < 0) {
        printf("libusb init failed\n");
        return 1;
    }

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

    // ??USB????,??????
    for (ssize_t i = 0; i < cnt; i++) {
        libusb_device *dev = devs[i];
        struct libusb_device_descriptor desc;

        if (libusb_get_device_descriptor(dev, &desc) < 0) {
            printf("Failed to get device descriptor\n");
            return 1;
        }

        printf("Device %d: VendorID=0xx, ProductID=0xx\n", i, desc.idVendor, desc.idProduct);
    }

    // ??????
    libusb_free_device_list(devs, 1);

    // ??libusb?
    libusb_exit(ctx);

    return 0;
}

?????????????????USB???VendorID?ProductID??????????????,???????????????????????????libusb?,????????:

gcc -o usb_example usb_example.c -lusb-1.0

?????????????????USB??????