一、关于QT版本
二、实现效果
三、功能简述
四、部分代码（源工程文件文章末尾链接下载）
QT += core gui serialport
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
CONFIG += c++11
# You can make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0
SOURCES += \
main.cpp \
widget.cpp
HEADERS += \
widget.h
FORMS += \
widget.ui
# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target
#include "widget.h"
#include "ui_widget.h"
#include <QFile>
#include <QFileDialog>
Widget::Widget(QWidget *parent)
: QWidget(parent)
, ui(new Ui::Widget)
{
ui->setupUi(this);
recByteLen=0;
init_all_combox();
updateComTimer.start(1000);
connect(&mySerial,&QSerialPort::readyRead,this,&Widget::serial_read_data);
connect(&updateComTimer,&QTimer::timeout,this,&Widget::init_port_combobox);
connect(&sendTime,&QTimer::timeout,this,&Widget::serial_send_data);
}
Widget::~Widget()
{
updateComTimer.destroyed();
sendTime.destroyed();
delete ui;
}
void Widget::serial_read_data()
{
QByteArray bytes = mySerial.readAll();
QString dataString;
recByteLen+=bytes.length();
if(ui->timeStampCheckBox->isChecked())
{
dataString.append("<font color=\"#FF0000\">");
dataString.append(QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss:zzz"));
dataString.append("</font>");
}
dataString.append(ui->hexShowCheckBox->isChecked()?bytes.toHex(' '):QString::fromLocal8Bit(bytes));
//保存到文件选项，将数据保存到文件
QString fileName = ui->saveFileNameEdit->text();
if(ui->saveFileCheckBox->isChecked())
{
QFile file(fileName);
file.open(QIODevice::WriteOnly | QIODevice::Text|QIODevice::Append);
file.write(dataString.toUtf8()+"\n");
file.close();
}
// 读取数据后，将数据输出至ui
ui->recTextShowTextBrowser->append(dataString);
QString s = QString(" 接收区：已接收%1字节").arg(recByteLen);
ui->recGroupBox->setTitle(s);
}
void Widget::on_serialSwitchBtn_clicked()
{
if(mySerial.isOpen())
{
//串口已经打开
mySerial.clear();
mySerial.close();
ui->serialSwitchBtn->setText("打开串口");
ui_enable(true);
//发送区控件状态处理
ui->timingSendCheckBox->setChecked(false);
sendTime.stop();
ui->sendTimeEdit->setEnabled(true);
return;
}
mySerial.setPortName(ui->serialPortComBox->currentText());
mySerial.setBaudRate(static_cast<QSerialPort::Parity>(ui->serialBandrateComBox->currentData().toInt()));
mySerial.setParity(static_cast<QSerialPort::Parity>(ui->serialVerifyBitComBox->currentData().toInt()));
mySerial.setDataBits(static_cast<QSerialPort::DataBits>(ui->serialDataBitComBox->currentData().toInt()));
mySerial.setStopBits(static_cast<QSerialPort::StopBits>(ui->serialStopBitComBox->currentData().toInt()));
if(ui->flowCheckBox->isChecked())
{
if(ui->flowModeCheckBox->isChecked())
mySerial.setFlowControl(QSerialPort::HardwareControl);
else
mySerial.setFlowControl(QSerialPort::SoftwareControl);
}
else
mySerial.setFlowControl(QSerialPort::NoFlowControl);
if(mySerial.open(QSerialPort::ReadWrite))
{
ui->serialSwitchBtn->setText("关闭串口");
ui_enable(false);
}
else
{
QMessageBox::warning(this,"错误",mySerial.errorString());
}
}
void Widget::on_saveWidgetBtn_clicked()
{
QString path = QFileDialog::getOpenFileName(this,
"open","../","TXT(*.txt)");
if(path.isEmpty()==false)
{
//创建文件对象
QFile file(path);
bool isOk = file.open(QIODevice::WriteOnly| QIODevice::Text);
if(isOk==true)
{
QString context = ui->recTextShowTextBrowser->document()->toPlainText();
file.write(context.toUtf8());
}
file.close();
}
}
void Widget::on_clearRecBtn_clicked()
{
recByteLen=0;
ui->recTextShowTextBrowser->clear();
ui->recGroupBox->setTitle(" 接收区：已接收0字节");
}
void Widget::on_sendBtn_clicked()
{
if(!mySerial.isOpen())
{
QMessageBox::warning(this,"错误","串口没有连接!");
return;
}
serial_send_data();
}
void Widget::on_clearSendAreaBtn_clicked()
{
ui->sendTextTextEdit->clear();
}
void Widget::on_saveFileCheckBox_clicked(bool checked)
{
if(checked==false)
{
ui->saveFileNameEdit->setEnabled(true);
return;
}
QString fileName = ui->saveFileNameEdit->text();
if(fileName.isEmpty())
{
QMessageBox::warning(this,"错误","文件名不能为空！");
ui->saveFileCheckBox->setCheckState(Qt::Unchecked);
ui->saveFileNameEdit->setEnabled(true);
return;
}
ui->saveFileNameEdit->setEnabled(false);
}
void Widget::on_timingSendCheckBox_clicked(bool checked)
{
if(checked)
{
int time = ui->sendTimeEdit->text().toInt();
if(time<=0)
{
ui->timingSendCheckBox->setChecked(false);
QMessageBox::warning(this,"错误","请在下方框中输入定时发送时间！");
return;
}
if(!mySerial.isOpen())
{
ui->timingSendCheckBox->setChecked(false);
QMessageBox::warning(this,"错误","串口未连接！");
return;
}
ui->sendBtn->setEnabled(false);
ui->sendTimeEdit->setEnabled(false);
sendTime.start(time);
}
else
{
ui->sendBtn->setEnabled(true);
ui->sendTimeEdit->setEnabled(true);
sendTime.stop();
}
}
void Widget::serial_send_data()
{
QString val = ui->sendTextTextEdit->toPlainText();
if(val.length()<=0)
return;
if(ui->hexSendCheckBox->isChecked())
{
val = val.trimmed();
QByteArray inputData;
QStringList stringList = val.split(" ");
for (auto var : stringList)
{
if (var.length()){
quint8 byte = var.toInt(Q_NULLPTR, 16);
inputData.append(byte);
}
}
if(ui->sendNewLineCheckBox->isChecked())
inputData.append(0x0D).append(0x0A);
mySerial.write(inputData);
}
else
{
if(ui->sendNewLineCheckBox->isChecked())
val.append("\r\n");
mySerial.write(val.toLocal8Bit());
}
}
void Widget::ui_enable(bool isEnable)
{
ui->serialPortComBox->setEnabled(isEnable);
ui->serialBandrateComBox->setEnabled(isEnable);
ui->serialDataBitComBox->setEnabled(isEnable);
ui->serialVerifyBitComBox->setEnabled(isEnable);
ui->serialStopBitComBox->setEnabled(isEnable);
ui->flowCheckBox->setEnabled(isEnable);
ui->flowModeCheckBox->setEnabled(isEnable);
}
void Widget::init_all_combox()
{
init_port_combobox();
init_port_combobox();
init_bandrate_combobox();
init_databit_combobox();
init_paritybit_combobox();
init_stopbit_combobox();
init_ui_context();
}
void Widget::init_port_combobox()
{
// 获取本机所有串口设备信息
QList<QSerialPortInfo> infoList = QSerialPortInfo::availablePorts();
static int infoListLen;
if(infoList.length()==infoListLen)
return;
infoListLen = infoList.length();
// 为了在下拉选项中显示更多信息，采用模型形式添加设备列表
QStandardItemModel *model = new QStandardItemModel(ui->serialPortComBox);
for (auto var : infoList){
QStandardItem *item = new QStandardItem(var.portName());
item->setToolTip(var.portName() + " " + var.description());
model->appendRow(item);
}
// 将设备信息添加至设备选择框中，添加前清除原有信息
ui->serialPortComBox->clear();
ui->serialPortComBox->setModel(model);
}
void Widget::init_bandrate_combobox()
{
ui->serialBandrateComBox->clear();
QList<qint32> bdList = QSerialPortInfo::standardBaudRates();
for (auto var : bdList){
ui->serialBandrateComBox->addItem(QString::number(var), QVariant::fromValue(var));
}
ui->serialBandrateComBox->setCurrentText("9600");
}
void Widget::init_databit_combobox()
{
ui->serialDataBitComBox->clear();
ui->serialDataBitComBox->addItem(QString::number(QSerialPort::Data5,10),QVariant::fromValue(QSerialPort::Data5));
ui->serialDataBitComBox->addItem(QString::number(QSerialPort::Data6,10),QVariant::fromValue(QSerialPort::Data6));
ui->serialDataBitComBox->addItem(QString::number(QSerialPort::Data7,10),QVariant::fromValue(QSerialPort::Data7));
ui->serialDataBitComBox->addItem(QString::number(QSerialPort::Data8,10),QVariant::fromValue(QSerialPort::Data8));
ui->serialDataBitComBox->setCurrentText(QString::number(QSerialPort::Data8,10));
}
void Widget::init_paritybit_combobox()
{
ui->serialVerifyBitComBox->clear();
ui->serialVerifyBitComBox->addItem("None",QVariant::fromValue(QSerialPort::NoParity));
ui->serialVerifyBitComBox->addItem("Even",QVariant::fromValue(QSerialPort::EvenParity));
ui->serialVerifyBitComBox->addItem("Odd",QVariant::fromValue(QSerialPort::OddParity));
ui->serialVerifyBitComBox->addItem("Space",QVariant::fromValue(QSerialPort::SpaceParity));
ui->serialVerifyBitComBox->addItem("Mark",QVariant::fromValue(QSerialPort::MarkParity));
ui->serialVerifyBitComBox->setCurrentText("None");
}
void Widget::init_stopbit_combobox()
{
ui->serialStopBitComBox->clear();
ui->serialStopBitComBox->addItem("1",QVariant::fromValue(QSerialPort::OneStop));
ui->serialStopBitComBox->addItem("1.5",QVariant::fromValue(QSerialPort::OneAndHalfStop));
ui->serialStopBitComBox->addItem("2",QVariant::fromValue(QSerialPort::TwoStop));
}
void Widget::init_ui_context()
{
ui->saveFileNameEdit->setText("save.txt");
ui->sendTimeEdit->setText("1000");
}
五、源工程下载
完整工程下载
