当前位置：首页 > news >正文

QT调用libusb库stm32407上下位机

news 2025/4/5 7:45:41

安富莱USB上位机教程

参考安富莱的视频，不过这里调用是libusb最新的库
可以参考上一个文章：
QT调用最新的libusb库
https://editor.csdn.net/md/?articleId=142733711

调试结果：
在这里插入图片描述

资源地址：
上位机：https://download.csdn.net/download/a15236617777/89856863

对比参照：
这个是安富莱的QT工程用的库，应该不是最新的。
https://download.csdn.net/download/a15236617777/89856864

部分代码：

int OpenUSB(void)
{int ret;// 初始化 libusbret = libusb_init(&m_dev_ctx);if (ret < 0) {std::cerr << "Failed to initialize libusb" << std::endl;return ret;}// 打开 USB 设备，替换为你的设备 VID 和 PIDm_dev_handle = libusb_open_device_with_vid_pid(m_dev_ctx, m_dev_VENDOR, m_dev_PRODUCT);if (!m_dev_handle) {std::cerr << "Cannot open device" << std::endl;libusb_exit(m_dev_ctx);return -1;}// 申请接口（假设接口 0）ret = libusb_claim_interface(m_dev_handle, 1);if (ret < 0) {std::cerr << "Cannot claim interface" << std::endl;libusb_close(m_dev_handle);libusb_exit(m_dev_ctx);return ret;}return ret=0;
}int ReadUsbMsg(void)
{int ret;libusb_device *newdevice=libusb_get_device(m_dev_handle);libusb_device_descriptor desc;// 获取设备描述符if (libusb_get_device_descriptor(newdevice, &desc) != 0) {std::cerr << "Failed to get device descriptor" << std::endl;return -1;}else{// 获取厂家字符串if (libusb_get_string_descriptor_ascii(m_dev_handle, desc.iManufacturer, usb_msg_manufacturer, sizeof(usb_msg_manufacturer)) > 0) {std::cout << "Manufacturer: " << usb_msg_manufacturer << std::endl;}// 获取产品字符串if (libusb_get_string_descriptor_ascii(m_dev_handle, desc.iProduct, usb_msg_product, sizeof(usb_msg_product)) > 0) {std::cout << "Product: " << usb_msg_product << std::endl;}// 获取序列号字符串if (libusb_get_string_descriptor_ascii(m_dev_handle, desc.iSerialNumber, usb_msg_serial, sizeof(usb_msg_serial)) > 0) {std::cout << "Serial Number: " << usb_msg_serial << std::endl;}}return ret=1;}
int WriteBulkData() {int transferred; // 实际传输字节数int ret;// 发送数据ret = libusb_bulk_transfer(m_dev_handle, 2, Send_CmdData, sizeof(Send_CmdData), &transferred, 1000);if (ret < 0){std::cerr <<libusb_error_name(ret)<< std::endl;return ret;} else{std::cout<<"Sent CMD: 0X"<<std::setw(2) << std::setfill('0') << std::hex <<(int)Send_CmdData[0]<<"("<<transferred<<"bytes)\n"<<std::endl;}return 0;
}void display_read_data(unsigned char *buffer, int transferred) {std::cout << "Read " << transferred << " bytes:" << std::endl;for (int i = 0; i < transferred; i++) {if (i % 50 == 0) { // 每16个字节换行if (i > 0) {std::cout << std::dec << std::endl; // 切换回十进制}std::cout << "Line " << (i / 50) << ": ";}std::cout << std::setw(2) << std::setfill('0') << std::hex << (int)buffer[i] << " ";}std::cout << std::dec << std::endl; // 切换回十进制
}int ReadBulkData() {//unsigned char buffer[2048]; // 缓冲区大小根据需求调整int transferred; // 实际传输字节数int ret;// 执行 bulk 读取 RecTraDataret = libusb_bulk_transfer(m_dev_handle, 0x82, Rece_DATA, sizeof(Rece_DATA), &transferred, 1000);//ret = libusb_bulk_transfer(m_dev_handle, 0x82, buffer, sizeof(buffer), &transferred, 1000);if(ret<0){std::cerr << "Bulk read failed: " << libusb_error_name(ret) << std::endl;return ret;}else{display_read_data(Rece_DATA,transferred);}return transferred;
}