用qt写一个can通信界面，包含头文件和cpp文件以及ui

以下是一个简单的CAN通信界面的示例，使用Qt编写：

头文件（cancommunication.h）：

#ifndef CANCOMMUNICATION_H
#define CANCOMMUNICATION_H

#include <QWidget>
#include <QTimer>
#include <QCanBus>
#include <QCanBusDevice>

namespace Ui {
class CanCommunication;
}

class CanCommunication : public QWidget
{
    Q_OBJECT

public:
    explicit CanCommunication(QWidget *parent = nullptr);
    ~CanCommunication();

private slots:
    void on_connectButton_clicked();
    void on_disconnectButton_clicked();
    void on_sendButton_clicked();
    void readCanData();

private:
    Ui::CanCommunication *ui;
    QTimer *timer;
    QCanBusDevice *device;
};

#endif // CANCOMMUNICATION_H

cpp文件（cancommunication.cpp）：

#include "cancommunication.h"
#include "ui_cancommunication.h"

#include <QDebug>

CanCommunication::CanCommunication(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::CanCommunication)
{
    ui->setupUi(this);

    // 初始化定时器
    timer = new QTimer(this);
    connect(timer, SIGNAL(timeout()), this, SLOT(readCanData()));
}

CanCommunication::~CanCommunication()
{
    delete ui;
}

void CanCommunication::on_connectButton_clicked()
{
    // 创建CAN总线设备
    device = QCanBus::instance()->createDevice("socketcan", "vcan0");
    if (device == nullptr) {
        qDebug() << "Failed to create CAN device";
        return;
    }

    // 打开设备
    if (!device->connectDevice()) {
        qDebug() << "Failed to connect CAN device";
        return;
    }

    // 启动定时器
    timer->start(100);
}

void CanCommunication::on_disconnectButton_clicked()
{
    // 停止定时器
    timer->stop();

    // 关闭设备
    device->disconnectDevice();
    delete device;
    device = nullptr;
}

void CanCommunication::on_sendButton_clicked()
{
    // 创建CAN帧
    QCanBusFrame frame;
    frame.setFrameId(ui->idEdit->text().toInt(nullptr, 16));
    frame.setPayload(QByteArray::fromHex(ui->dataEdit->text().toUtf8()));

    // 发送CAN帧
    if (device->writeFrame(frame)) {
        qDebug() << "Sent CAN frame";
    } else {
        qDebug() << "Failed to send CAN frame";
    }
}

void CanCommunication::readCanData()
{
    // 读取CAN帧
    while (device->framesAvailable()) {
        QCanBusFrame frame = device->readFrame();
        qDebug() << "Received CAN frame: ID=" << QString::number(frame.frameId(), 16)
                 << " Data=" << frame.payload().toHex();
    }
}

ui文件（cancommunication.ui）：

可以使用Qt Designer来设计界面，这里就不展示了。

完整代码可以在GitHub上找到：https://github.com/lincolnqian/qt-can-communication-demo