USB/HID设备+Qt数据收发

#include "mainwindow.h" #include "ui_mainwindow.h" MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent) , ui(new Ui::MainWindow) { ui->setupUi(this); this->setWindowTitle(QStringLiteral("USB/HID设备")); if(!m_timer) m_timer = new QTimer(); connect(m_timer, &QTimer::timeout, this, &MainWindow::getHIDData); } MainWindow::~MainWindow() { delete ui; } void MainWindow::getHIDData() { hid_init(); m_Handle = hid_open(1046, 45057, NULL);//vid和pid绑定 unsigned char buf1[4] = {0xff}; hid_set_nonblocking(m_Handle, 0); // 数据接收 hid_read(m_Handle, buf1, 4); // while(hid_read(handle, buf1, 8)) { for(int i = 0; i < 4; i++) { qDebug("%d %02X",i, buf1[i]); ui->plainTextEdit->appendPlainText(QString("%1 %2").arg(i).arg(QString::number(buf1[i], 16), 2, QLatin1Char('0')).toUpper()); } ui->plainTextEdit->appendPlainText("\n"); } // 数据发送 // unsigned char buffer[9]; // memset(buffer, 0, sizeof(buffer)); // buffer[0] = 0x00; // buffer[1] = 0x20; // buffer[2] = 0x00; // buffer[3] = 0x02; // buffer[4] = 0x00; // buffer[5] = 0x07; // hid_write(handle, buffer, 9); hid_close(m_Handle); m_Handle = nullptr; } void MainWindow::on_btn_Data_clicked() { if(ui->btn_Data->text() == QStringLiteral("获取数据")) { m_timer->start(10); ui->btn_Data->setText(QStringLiteral("停止获取")); } else if(ui->btn_Data) { m_timer->stop(); if(m_Handle) { hid_close(m_Handle); m_Handle = nullptr; } ui->btn_Data->setText(QStringLiteral("获取数据")); } } void MainWindow::on_btn_HIDInfo_clicked() { struct hid_device_info *devs, *cur_dev; devs = hid_enumerate(0x0, 0x0); cur_dev = devs; QString deviceInfo; while (cur_dev) { // qDebug()<<"Device Found:"<< cur_dev->vendor_id<< cur_dev->product_id<< cur_dev->path<< cur_dev->serial_number << cur_dev; deviceInfo = QString("vid:%1 pid:%2 %3 %4").arg(cur_dev->vendor_id).arg(cur_dev->product_id).arg(cur_dev->path).arg(cur_dev->serial_number); ui->plainTextEdit->appendPlainText(deviceInfo); cur_dev = cur_dev->next; } hid_free_enumeration(devs); }