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111 lines
3.1 KiB
111 lines
3.1 KiB
#include "widget.h"
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#include "ui_widget.h"
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#include <QSerialPortInfo>//添加串口头文件
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#include <QMessageBox>//提示头文件
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Widget::Widget(QWidget *parent) :
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QWidget(parent),
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ui(new Ui::Widget)
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{
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ui->setupUi(this);
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serialPort = new QSerialPort(this);//创建串口对象
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//定义串口号
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QStringList serialPortNums;
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//获取串口号并显示
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foreach (const QSerialPortInfo &info, QSerialPortInfo::availablePorts()) {
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serialPortNums<<info.portName();
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}
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ui->serialPortNum->addItems(serialPortNums);
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//关联数据接收槽函数
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connect(serialPort,SIGNAL(readyRead()),this,SLOT(serialDataReadReady_Slot()));
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}
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Widget::~Widget()
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{
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delete ui;
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}
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//数据接收槽函数
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void Widget::serialDataReadReady_Slot(){
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QString buff;//暂存数据
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buff = QString(serialPort->readAll());//读取串口的数据
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ui->dataRCV->appendPlainText(buff);//将数据发送到接受区内
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}
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void Widget::on_btnOpenSerial_clicked()//打开串口-点击信号对应的槽函数
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{
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//声明变量
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QSerialPort::BaudRate baudRate;
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QSerialPort::DataBits dataBits;
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QSerialPort::StopBits stopBits;
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QSerialPort::Parity parity;
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//赋值，初始化
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//波特率
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if(ui->baudRate->currentText() == "4800"){
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baudRate = QSerialPort::Baud4800;
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}else if(ui->baudRate->currentText() == "9600"){
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baudRate = QSerialPort::Baud9600;
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}else if(ui->baudRate->currentText() == "115200"){
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baudRate = QSerialPort::Baud115200;
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}
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//数据位
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if(ui->dataBits->currentText()=="5"){
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dataBits = QSerialPort::Data5;
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}else if(ui->dataBits->currentText()=="6"){
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dataBits = QSerialPort::Data6;
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}else if(ui->dataBits->currentText()=="7"){
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dataBits = QSerialPort::Data7;
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}else if(ui->dataBits->currentText()=="8"){
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dataBits = QSerialPort::Data8;
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}
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//停止位
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if(ui->stopBits->currentText()=="1"){
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stopBits = QSerialPort::OneStop;
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}else if(ui->stopBits->currentText()=="1.5"){
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stopBits = QSerialPort::OneAndHalfStop;
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}else if(ui->stopBits->currentText()=="2"){
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stopBits = QSerialPort::TwoStop;
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}
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//校验位
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if(ui->parity->currentText()=="none"){
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parity = QSerialPort::NoParity;
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}
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//获取当前选择的串口号
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serialPort->setPortName(ui->serialPortNum->currentText());
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//设置串口参数
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serialPort->setBaudRate(baudRate);
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serialPort->setDataBits(dataBits);
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serialPort->setStopBits(stopBits);
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serialPort->setParity(parity);
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//判断串口是否打开成功，并提示，需要添加<QMessgaeBox>头文件
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if(serialPort->open(QIODevice::ReadWrite) == true){
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QMessageBox::information(this,"提示","成功");
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}else {
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QMessageBox::critical(this,"提示","失败");
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}
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}
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void Widget::on_btnCloseSerial_clicked()//关闭串口
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{
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serialPort->close();
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}
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void Widget::on_btnSend_clicked()//数据发送槽函数
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{
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serialPort->write(ui->dataInput->text().toLocal8Bit().data());
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}
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void Widget::on_btnClear_clicked()//清空槽函数
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{
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ui->dataRCV->clear();
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}
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