#include "mainwindow.h"
#include "ui_mainwindow.h"
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
//查找可用的串口
foreach(const QSerialPortInfo &info, QSerialPortInfo::availablePorts())
{
QSerialPort serial;
serial.setPort(info);
if(serial.open(QIODevice::ReadWrite))
{
ui->PortBox->addItem(serial.portName());
serial.close();
}
}
//设置波特率下拉菜单默认显示第三项
ui->BaudBox->setCurrentIndex(3);
//关闭发送按钮的使能
ui->sendButton->setEnabled(false);
qDebug() << tr("界面设定成功！");
}
MainWindow::~MainWindow()
{
delete ui;
}
//清空接受窗口
void MainWindow::on_clearButton_clicked()
{
ui->textEdit->clear();
}
//发送数据
void MainWindow::on_sendButton_clicked()
{
serial->write(ui->textEdit_2->toPlainText().toLatin1());
}
//读取接收到的数据
void MainWindow::Read_Data()
{
QByteArray buf;
buf = serial->readAll();
if(!buf.isEmpty())
{
QString str = ui->textEdit->toPlainText();
str+=tr(buf);
ui->textEdit->clear();
ui->textEdit->append(str);
}
buf.clear();
}
void MainWindow::on_openButton_clicked()
{
if(ui->openButton->text()==tr("打开串口"))
{
serial = new QSerialPort;
//设置串口名
serial->setPortName(ui->PortBox->currentText());
//打开串口
serial->open(QIODevice::ReadWrite);
//设置波特率
serial->setBaudRate(ui->BaudBox->currentText().toInt());
//设置数据位数
switch(ui->BitNumBox->currentIndex())
{
case 8: serial->setDataBits(QSerialPort::Data8); break;
default: break;
}
//设置奇偶校验
switch(ui->ParityBox->currentIndex())
{
case 0: serial->setParity(QSerialPort::NoParity); break;
default: break;
}
//设置停止位
switch(ui->StopBox->currentIndex())
{
case 1: serial->setStopBits(QSerialPort::OneStop); break;
case 2: serial->setStopBits(QSerialPort::TwoStop); break;
default: break;
}
//设置流控制
serial->setFlowControl(QSerialPort::NoFlowControl);
//关闭设置菜单使能
ui->PortBox->setEnabled(false);
ui->BaudBox->setEnabled(false);
ui->BitNumBox->setEnabled(false);
ui->ParityBox->setEnabled(false);
ui->StopBox->setEnabled(false);
ui->openButton->setText(tr("关闭串口"));
ui->sendButton->setEnabled(true);
//连接信号槽
QObject::connect(serial, &QSerialPort::readyRead, this, &MainWindow::Read_Data);
}
else
{
//关闭串口
serial->clear();
serial->close();
serial->deleteLater();
//恢复设置使能
ui->PortBox->setEnabled(true);
ui->BaudBox->setEnabled(true);
ui->BitNumBox->setEnabled(true);
ui->ParityBox->setEnabled(true);
ui->StopBox->setEnabled(true);
ui->openButton->setText(tr("打开串口"));
ui->sendButton->setEnabled(false);
}
}
