QT_串口助手源代码精简版.rar

#include "widget.h" #include "ui_widget.h" #include "QtSerialPort/QSerialPortInfo" //导入串口所用的头文件，前提是在.pro文件中添加“QT += serialport” #include "QDebug" #include "QMessageBox" #include "QString" Widget::Widget(QWidget *parent) : QWidget(parent) , ui(new Ui::Widget) { ui->setupUi(this); QStringList serialNamePort; serialPort = new QSerialPort(this); //查找可用的串口信息并保存 foreach(const QSerialPortInfo &info, QSerialPortInfo::availablePorts()) { serialNamePort<<info.portName(); } ui->comboBox_serialNum->addItems(serialNamePort); //将可用的串口号写入下拉列表里 connect(serialPort,SIGNAL(readyRead()),this,SLOT(serialPortReadyRead())); //将串口读信号与槽函数进行关联 //readyRead()信号，即串口发送过来数据时，程序就会收到一个可以读数据的信号 } Widget::~Widget() { delete ui; } //槽函数：打开/关闭串口 按钮被点击时 void Widget::on_pushButton_OpenOrClose_clicked() { QSerialPort::BaudRate baudRate; //定义串口中一些参数的枚举变量:波特率、数据位、停止位、校验位 QSerialPort::DataBits dataBits; QSerialPort::StopBits stopBits; QSerialPort::Parity checkBits; //qDebug() <<ui->comboBox_boundRate->currentIndex(); /* *接下来的执行逻辑： * 1、先判断串口下拉栏里是否获取到串口， * 如果（没有串口）， * 则提示用户。 * 否则 * 就将左边从下拉列表中选择好的选项读取出来保存，并尝试打开此串口。 */ if(ui->comboBox_serialNum->currentIndex() == -1) { QMessageBox::information(this,"提示","当前没有可用串口，请刷新后再次尝试"); } else { if(ui->pushButton_OpenOrClose->text() == "打开串口") { //读取选择的波特率 switch (ui->comboBox_boundRate->currentIndex()) { case 0: baudRate = QSerialPort::Baud2400; break; case 1: baudRate = QSerialPort::Baud4800; break; case 2: baudRate = QSerialPort::Baud9600; break; case 3: baudRate = QSerialPort::Baud115200; break; } //读取选择的数据位 switch (ui->comboBox_date->currentIndex()) { case 0: dataBits = QSerialPort::Data5; break; case 1: dataBits = QSerialPort::Data6; break; case 2: dataBits = QSerialPort::Data7; break; case 3: dataBits = QSerialPort::Data8; break; } //读取选择的停止位 switch (ui->comboBox_stop->currentIndex()) { case 0: stopBits = QSerialPort::OneStop; break; case 1: stopBits = QSerialPort::OneAndHalfStop; break; case 2: stopBits = QSerialPort::TwoStop; break; } //读取选择的校验位 switch (ui->comboBox_check->currentIndex()) { case 0: checkBits = QSerialPort::NoParity; break; case 1: checkBits = QSerialPort::OddParity; break; case 2: checkBits = QSerialPort::EvenParity; break; } //对定义的串口对象属性赋值 serialPort->setPortName(ui->comboBox_serialNum->currentText()); serialPort->setBaudRate(baudRate); serialPort->setDataBits(dataBits); serialPort->setStopBits(stopBits); serialPort->setParity(checkBits); //打开串口：用open函数打开，中间参数为串口打开的方式，函数内可能会将上述串口对象属性值进行写入 if(serialPort->open(QIODevice::ReadWrite) == true) { QMessageBox::information(this,"提示","串口打开成功"); ui->pushButton_OpenOrClose->setText("关闭串口"); ui->lable_status->setStyleSheet("border-image: url(:/Picture/open.png);"); //修改标签的样式表：打开串口后，显示一个处于开启状态的图标 } else QMessageBox::critical(this,"提示","串口打开失败"); } else if(ui->pushButton_OpenOrClose->text() == "关闭串口") { serialPort->close(); QMessageBox::information(this,"提示","串口已关闭"); ui->pushButton_OpenOrClose->setText("打开串口"); //提示下次可以打开 ui->lable_status->setStyleSheet("border-image: url(:/Picture/close.png);"); //修改标签的样式表：关闭后，显示一个关闭的图标 } } } //槽函数：刷新串口 按钮被点击时 void Widget::on_pushButton_refres_clicked() { QStringList serialNamePort1; ui->comboBox_serialNum->clear(); foreach(const QSerialPortInfo &info, QSerialPortInfo::availablePorts()) { serialNamePort1<<info.portName(); } ui->comboBox_serialNum->addItems(serialNamePort1); } //槽函数：从串口中接收数据 void Widget::serialPortReadyRead() { QString buf; buf = QString(serialPort->readAll()); ui->plainTextEdit_Receive->appendPlainText(buf); //qDebug() << buf; } //槽函数：发送 按钮被点击时 void Widget::on_pushButton_Send_clicked() { serialPort->write(ui->lineEdit_Send->text().toLocal8Bit().data()); } void Widget::on_pushButton_clean_clicked() { ui->plainTextEdit_Receive->clear(); } void Widget::on_pushButton_sendClean_clicked() { ui->lineEdit_Send->clear(); }