1.libusb 下载 ，选择编译好的二进制文件，libusb-1.0.26-binaries.7z
libusb Activity
2. 解压
3. 在 Qt Widgets Application 或者 Qt Console Application 工程中导入库，Qt 使用的是 minggw 64编译器，所以选择libusb-MinGW-x64。
把 libusb-1.0.a 和 libusb.h 放入工程。
4. 驱动转换，把libusb驱动转换成Windows的WinUSB驱动。
Zadig - USB driver installation made easy
Zadig是USB驱动安装变得更容易。
Zadig是一个安装通用USB驱动程序的Windows应用程序，诸如WinUSB,libusb-win32/libusb0.sys,libusbK,可以帮助你快速的使用USB设备。
选择 Options -> List All Devices 选择需要通信的USB设备 -> install driver
5. 函数介绍
玩转USB HID系列：libusb函数介绍-CSDN博客
6.测试代码
#include <stdio.h>
#include <libusb.h>
#include <string.h>
#include <time.h>
#include <sys/time.h>#define MAX_TX_SIZE 239*27
#define MAX_RX_SIZE 8000
#define MAX_FILE_SIZE 1024*1024*300int main(int argc, char *argv[])
{QCoreApplication a(argc, argv);int ret = 1;libusb_context *ctx = NULL;libusb_device_handle *dev_handle = NULL;if(libusb_init(&ctx) < 0){printf("init fail\r\n");return 1;}else{printf("init Successful\r\n");}dev_handle = libusb_open_device_with_vid_pid(ctx, 0x33AA, 0x0000);if(dev_handle == NULL){printf("device is not open\r\n");return 1;}else{printf("Device Opened\n");}if(libusb_kernel_driver_active(dev_handle, 0) == 1){printf("Kernel Driver Active\n");if(libusb_detach_kernel_driver(dev_handle, 0) == 0){printf("Kernel Driver Detached!\n");}}ret = libusb_claim_interface(dev_handle, 0);if(ret < 0){perror("Cannot Claim Interface\n");return 1;}int transferred = 0;uint8_t sendcmd[MAX_TX_SIZE] = {0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08};uint8_t readbuf[MAX_RX_SIZE] = {0};for(int i=0; i<163; i++){ret = libusb_bulk_transfer(dev_handle, 0x02, sendcmd, sizeof(sendcmd), &transferred, 0);//printf("write num=%d\r\n",transferred);if(ret==0 && transferred==sizeof(sendcmd)){// printf("write Successful!\n");}else{printf("write error!\n");}ret = libusb_bulk_transfer(dev_handle, 0x82, readbuf, sizeof(readbuf), &transferred, 0);if (ret != 0){printf("failed to read \n");}else{printf("read num=%d\r\n", transferred);}}ret = libusb_release_interface(dev_handle, 0);if(ret != 0){printf("Cannot Released Interface!\n");}else{printf("Released Interface!\n");}libusb_close(dev_handle);libusb_exit(ctx);return a.exec();
}
