本篇内容介绍了“qt串口消息模拟器怎么实现”的有关知识，在实际案例的操作过程中，不少人都会遇到这样的困境，接下来就让小编带领大家学习一下如何处理这些情况吧！希望大家仔细阅读，能够学有所成！
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//mainwindow.h
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include
#include
#include
enum MsgType{
msg_Tacho = 0x00,
msg_Speed = 0x01,
msg_Tempt = 0x03
};
QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACE
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
MainWindow(QWidget *parent = nullptr);
~MainWindow();
void openSerPort();
void SMD_01(unsigned char * message);
void SMD_14(unsigned char * message);
void showLog(QString str);
void SendData(QString& msg,int type, QString temp = "all");
void SendRepeatData();
private slots:
void on_horizontalSlider_valueChanged(int value);
void on_horizontalSlider_3_valueChanged(int value);
void on_horizontalSlider_2_valueChanged(int value);
void on_horizontalSlider_4_valueChanged(int value);
void on_pushButton_connect_clicked();
void on_pushButton_send_clicked();
void on_comboBox_currentIndexChanged(const QString &arg1);
void on_pushButton_disconnect_clicked();
void on_action_automated_triggered();
void on_actionCancel_automated_triggered();
void on_textBrowser_textChanged();
private:
void SlotMsgDecode();
private:
Ui::MainWindow *ui;
QSerialPort* m_port;
QString m_ncom;
QTimer* m_timer;
unsigned char* message;
unsigned char m_connectStatus;
bool m_msgStatus;
int m_sendRepeatNum;
};
#endif // MAINWINDOW_H
mainwindow.cpp
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include
static unsigned char pbuff[512];
static unsigned char sendbuff_26[10] = {0x2e, 0x26, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
static unsigned char sendbuff_21[9] = {0x2e, 0x21, 0x05, 0x00, 0x00, 0x1e, 0x1e, 0x00, 0x00};
const int HEADLENTH = 2;
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
, ui(new Ui::MainWindow)
{
ui->setupUi(this);
setWindowTitle("XXXX测试工具");
m_ncom = "COM1";
m_port = nullptr;
message = nullptr;
m_timer = new QTimer;
m_timer->setInterval(160);
m_connectStatus = 0x00;
m_msgStatus = false;
m_sendRepeatNum = 0;
//转速表
ui->horizontalSlider->setRange(0,8000);
ui->horizontalSlider->setSingleStep(50);
//车速表
ui->horizontalSlider_2->setRange(0,240);
ui->horizontalSlider_2->setSingleStep(2);
//左区温度
ui->horizontalSlider_3->setRange(15,32);
//右区温度
ui->horizontalSlider_4->setRange(15,32);
//默认转速选中
ui->radioButton->setChecked(true);
}
MainWindow::~MainWindow()
{
delete ui;
disconnect(m_port, &QSerialPort::readyRead,this,&MainWindow::SlotMsgDecode);
m_port->close();
delete m_port;
delete m_timer;
}
void MainWindow::openSerPort()
{
m_port = new QSerialPort(m_ncom);
bool b_startOK = false;
if(m_port->open(QIODevice::ReadWrite))
{
m_port->setBaudRate(QSerialPort::Baud38400);
m_port->setParity(QSerialPort::NoParity);
m_port->setDataBits(QSerialPort::Data8);
m_port->setStopBits(QSerialPort::OneStop);
m_port->setFlowControl(QSerialPort::UnknownFlowControl);// ? why not UnknownFlowControl NoFlowControl
m_port->clearError();
m_port->clear();
showLog("打开串口"+m_ncom+"成功...");
b_startOK = true;
}
else
{
b_startOK = false;
QSerialPort::SerialPortError err= m_port->error();
printf("Error. Can't Open Serial Por,:error:%d !\n",err);
showLog("打开串口"+m_ncom+"失败...");
m_port->clear();
m_port->close();
delete m_port;
m_port = nullptr;
}
if(b_startOK)
{
connect(m_port, &QSerialPort::readyRead,this,&MainWindow::SlotMsgDecode);
}
}
void MainWindow::SlotMsgDecode()
{
memset(pbuff,0,512);
unsigned char flag,flag0xAF,flagtype,datalen;
m_port->getChar((char*)&flag);
if(flag == 0xFA)
{
m_port->getChar((char*)&flag0xAF);
m_port->getChar((char*)&datalen);
printf("%02x %02x %02x",flag,flag0xAF,datalen);
int ret = m_port->read((char*)pbuff, datalen);
message = pbuff+HEADLENTH;
if(true)
{
for(int i = 0;igetChar((char*)&flagtype);
m_port->getChar((char*)&datalen);
printf("%02x %02x %02x ",flag,flagtype,datalen);
int ret = m_port->read((char*)pbuff, datalen + 1);
message = pbuff;
if(true)
{
for(int i = 0;iwrite((char*)&m_connectStatus,1);
showLog("与MCU握手成功...");
}
}
else if(flag == 0xff)
{
m_msgStatus = true;
m_sendRepeatNum = 0;
}
else
{
m_msgStatus = false;
}
m_port->readAll();
}
void MainWindow::SMD_01(unsigned char *message)
{
printf("%s\n",__FUNCTION__);
unsigned char byMsgdatatype = message[0];
switch (byMsgdatatype) {
case 0x01: //车速
printf("datavalid:%d\n",message[1]);
printf("alarminfo:%d\n",message[2]);
printf("speedvalue:%d\n",(message[3]<<8)+message[4]);
break;
case 0x02: //转速
printf("datavalid:%d\n",message[1]);
printf("alarminfo:%d\n",message[2]);
printf("tachovalue:%d\n",(message[3]<<8)+message[4]);
break;
default:
break;
}
}
void MainWindow::SMD_14(unsigned char *message)
{
printf("%s\n",__FUNCTION__);
unsigned char byMsgdatatype = message[0];
switch (byMsgdatatype) {
case 0x01: //车内温度
printf("datavalid:%d\n",message[1]);
printf("leftTempture:%d\n",((message[2]<<8)+message[3]));
printf("rightTempture:%d\n",(message[4]<<8)+message[5]);
break;
case 0x02: //时间
printf("%d:%d:%d\n",message[1],message[2],message[3]);
break;
default:
break;
}
}
void MainWindow::showLog(QString str)
{
QString strtemp = ui->textBrowser->toPlainText();
strtemp+=str;
strtemp +="\n";
if(strtemp.length()>4096)
{
strtemp.clear();
}
ui->textBrowser->setPlainText(strtemp);
//qDebug()<> 8;
sendbuff_26[6] = tacho - (sendbuff_26[5]<<8);
sendbuff_26[9] = ((sendbuff_26[1]+sendbuff_26[2]+sendbuff_26[3]+sendbuff_26[4]+sendbuff_26[5]+sendbuff_26[6] \
+sendbuff_26[7]+sendbuff_26[8])^0xff)&0xff;
m_port->write((char*)sendbuff_26,sizeof(sendbuff_26));
showLog(QString("[发送]转速:%1,校验:%2\n").arg((sendbuff_26[5]<<8)+ sendbuff_26[6]).arg(sendbuff_26[9]));
}
break;
case msg_Speed:
{
int speed = msg.toUInt();
sendbuff_26[3] = speed >> 8;
sendbuff_26[4] = speed - (sendbuff_26[3]<<8);
sendbuff_26[9] = ((sendbuff_26[1]+sendbuff_26[2]+sendbuff_26[3]+sendbuff_26[4]+sendbuff_26[5]+sendbuff_26[6] \
+sendbuff_26[7]+sendbuff_26[8])^0xff)&0xff;
m_port->write((char*)sendbuff_26,sizeof(sendbuff_26));
showLog(QString("[发送]车速:%1,校验:%2\n").arg((sendbuff_26[3]<<8)+ sendbuff_26[4]).arg(sendbuff_26[9]));
}
break;
case msg_Tempt:
{
int tempture = int(0x1e + (msg.toFloat()-0x0f)*2.0);
if(temp == "left") sendbuff_21[5] = tempture;
else if(temp == "right") sendbuff_21[6] = tempture;
else
{
sendbuff_21[5] = tempture;
sendbuff_21[6] = tempture;
}
sendbuff_21[8] = ((sendbuff_21[1]+sendbuff_21[2]+sendbuff_21[3]+sendbuff_21[4]+sendbuff_21[5]+sendbuff_21[6] \
+sendbuff_21[7])^0xff)&0xff;
m_port->write((char*)sendbuff_21,sizeof(sendbuff_21));
showLog(QString("[发送]左区温度:%1,右区温度%2,校验:%3\n").arg(msg.toFloat()).arg(msg.toFloat()).arg(sendbuff_21[8]));
}
break;
default:
break;
}
}
void MainWindow::SendRepeatData()
{
if(m_msgStatus == false)
{
m_port->write((char*)sendbuff_26,sizeof(sendbuff_26));
m_port->write((char*)sendbuff_21,sizeof(sendbuff_21));
++m_sendRepeatNum;
showLog(QString("重复第%1发送数据...").arg(m_sendRepeatNum));
if(m_sendRepeatNum == 3)
{
m_connectStatus = 0xf4;
showLog("消息重发次数已达3次,串口将被断开,请检察后重新连接...");
on_pushButton_disconnect_clicked();
}
}
else
{
m_sendRepeatNum = 0;
}
}
void MainWindow::on_horizontalSlider_valueChanged(int value)
{
QString data = QString("%1").arg(value);
ui->label_tacho->setText(data);
if(m_port == nullptr) return;
SendData(data,msg_Tacho);
}
void MainWindow::on_horizontalSlider_2_valueChanged(int value)
{
QString data = QString("%1").arg(value);
ui->label_speed->setText(data);
if(m_port == nullptr) return;
SendData(data,msg_Speed);
}
void MainWindow::on_horizontalSlider_3_valueChanged(int value)
{
QString data = QString("%1").arg(value);
ui->label_tempture->setText(data);
if(m_port == nullptr) return;
SendData(data,msg_Tempt,"left");
showLog(QString("[发送]左区温度:%1,校验:%2\n").arg(value).arg(sendbuff_21[8]));
}
void MainWindow::on_horizontalSlider_4_valueChanged(int value)
{
QString data = QString("%1").arg(value);
ui->label_tempture_2->setText(data);
if(m_port == nullptr) return;
SendData(data,msg_Tempt,"right");
showLog(QString("[发送]右区温度:%1,校验:%2\n").arg(value).arg(sendbuff_21[8]));
}
void MainWindow::on_pushButton_connect_clicked()
{
if(m_port == nullptr)
{
openSerPort();
}
else
{
showLog("串开已经打开，断开后可尝试重新连接...");
}
}
void MainWindow::on_pushButton_send_clicked()
{
QString senddata = ui->lineEdit->text();
if(m_port == nullptr)
{
showLog("请先连接到串口...");
return;
}
if(senddata.isEmpty())
{
showLog("发送值为空,请输入一个值后再发送...");
return;
}
if(m_connectStatus!=0xff)
{
showLog("与MCU握手失败,无法发送消息...");
return;
}
if(ui->radioButton->isChecked()) //转速被选中
{
if(senddata.toUInt()<=8000)
{
SendData(senddata,msg_Tacho);
}
else
{
showLog("输入的转速值不符，请确认值范围0-8000中...");
}
}
else if(ui->radioButton_2->isChecked()) // 车速被选中
{
if(senddata.toUInt()<=240)
{
SendData(senddata,msg_Speed);
}
else
{
showLog("输入的车速值不符，请确认值范围0-240中...");
}
}
else //左右区温度,设置为一样
{
if(senddata.toFloat()<=32 && senddata.toFloat()>=15)
{
SendData(senddata,msg_Tempt);
}
else
{
showLog("输入的温度值不符，请确认值范围15-32中...");
}
}
QTimer::singleShot(120,this,[this](){
SendRepeatData();
});
QTimer::singleShot(240,this,[this](){
SendRepeatData();
});
QTimer::singleShot(360,this,[this](){
SendRepeatData();
});
}
void MainWindow::on_comboBox_currentIndexChanged(const QString &arg1)
{
m_ncom = arg1;
}
void MainWindow::on_pushButton_disconnect_clicked()
{
if(m_port!=nullptr && m_port->isOpen())
{
disconnect(m_port, &QSerialPort::readyRead,this,&MainWindow::SlotMsgDecode);
unsigned char resetbuf[4] = {0x2E,0x81,0x01,0xF4};
m_port->clear();
m_port->write((char*)resetbuf,sizeof(resetbuf));
QTimer::singleShot(100,this,[this](){
m_port->close();
delete m_port;
m_port = nullptr;
showLog("串口"+m_ncom+"已断开连接...");
m_connectStatus = 0x00;
m_msgStatus = false;
m_sendRepeatNum = 0;
m_timer->stop();
});
}
}
void MainWindow::on_action_automated_triggered()
{
if(m_port == nullptr)
{
showLog("请先连接到串口...");
return;
}
showLog("自动化测试程序已启动...");
if(m_timer!=nullptr && !m_timer->isActive())
{
m_timer->start();
connect(m_timer,&QTimer::timeout,[=]{
uint tacho = ui->horizontalSlider->value();
tacho+=100;
tacho%=8100;
ui->horizontalSlider->setValue(tacho);
uint speed = ui->horizontalSlider_2->value();
speed += 10;
speed%=250;
ui->horizontalSlider_2->setValue(speed);
uint tempture = ui->horizontalSlider_3->value();
tempture+=1;
if(tempture == 33) tempture = 15;
ui->horizontalSlider_3->setValue(tempture);
ui->horizontalSlider_4->setValue(tempture);
});
}
}
void MainWindow::on_actionCancel_automated_triggered()
{
if(m_timer->isActive())
{
m_timer->stop();
showLog("自动化测试程序已关闭...");
}
else
{
showLog("没有自动化测试在运行...");
}
}
void MainWindow::on_textBrowser_textChanged()
{
ui->textBrowser->moveCursor(QTextCursor::End);
}
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