写一个libusb 通信代码

下面是一段使用 libusb 进行通信的代码示例：

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

#define VENDOR_ID 0x1234
#define PRODUCT_ID 0x5678

int main()
{
    libusb_device_handle *handle;
    int rc;
    
    rc = libusb_init(NULL);
    if (rc < 0) {
        printf("Error initializing libusb: %s\n", libusb_error_name(rc));
        return 1;
    }

    handle = libusb_open_device_with_vid_pid(NULL, VENDOR_ID, PRODUCT_ID);
    if (!handle) {
        printf("Error finding device with vendor ID 0x%04x and product ID 0x%04x\n", VENDOR_ID, PRODUCT_ID);
        libusb_exit(NULL);
        return 1;
    }

    unsigned char data[64];
    int actual_length;
    rc = libusb_bulk_transfer(handle, (0x01 | LIBUSB_ENDPOINT_IN), data, sizeof(data), &actual_length, 0);
    if (rc == 0) {
        printf("Successful bulk transfer of %d bytes:\n", actual_length);
        for (int i = 0; i < actual_length; i++) {
            printf("%02x ", data[i]);
        }
        printf("\n");
    } else {
        printf("Error in bulk transfer: %s\n", libusb_error_name(rc));
    }

    libusb_close(handle);
    libusb_exit(NULL);
    return 0;
}

请注意，这仅仅是一个示例代码，您可能需要根据您的设备和需求进行一些修改。此代码执行从设备读取数据的操作，并在控制台上打印出读取的数据。