Libusb

libusb_github

建议直接下载库，编译好麻烦

QT调用

.pro文件添加：

win32: LIBS += -L$$PWD/LIB/libusb/x64/ -llibusb-1.0

.cpp调用即可

#include "LIB/libusb/libusb.h"
void class_name::fun(){
	/* 1.  */
    libusb_init(NULL);
    /**/
    struct libusb_device **device_list;
    int num_devices = libusb_get_device_list(NULL, &device_list);
    /**/
    for (int i = 0; i < num_devices; i++)
    {
            struct libusb_device *dev = device_list[i];
            struct libusb_device_descriptor dev_desc;
            libusb_get_device_descriptor(dev, &dev_desc);
            int id_vendor =  dev_desc.idVendor;
            int id_product = dev_desc.idProduct;
            qDebug() << "id_vendor="<<id_vendor;
            qDebug() << "id_product="<<id_product;

            /**/
            struct libusb_device_handle *dev_handle = NULL;
            libusb_open(dev, &dev_handle);  //or
            dev_handle = libusb_open_device_with_vid_pid(NULL, 0x0525, 0xa4a0);
    }
}