The first small project of my own upper computer, hehe, I still have a sense of accomplishment.
Table of contents
1. First look at the QT host computer part
2. mainwindow.cpp main function.
1. First look at the QT host computer part
1. Write a page first
After clicking to hide the BOSS , the second page pops up
Because there is Jay Chou's clock in the opposite direction in my voice module, so I added the lyrics, you can change it freely;
If you want QT to realize the serial port, you need two header files, add them to mainwindow.cpp
#include <QtSerialPort/QSerialPort> // 提供访问串口的功能
#include <QtSerialPort/QSerialPortInfo> // 提供系统中存在的串口信息An error will be reported at this time, because the project file (shangwei.pro) still needs to be added
QT +=serialportAt this point, the functions inside the header file can be used normally. First we need to configure the serial port.
2. mainwindow.cpp main function.
Configure the serial port function:
void MainWindow::on_pushButton_5_clicked() //打开，关闭
{ //是OPEN时，代表没有打开串口
if(ui->pushButton_5->text() == QString("OPEN")) {
//检查串口是否被占用，再次检查一遍
//串口配置
//清空缓冲区
serial = new QSerialPort; //申请内存,并设置父对象
// 获取计算机中有效的端口号，然后将端口号的名称给端口选择控件
//QSerialPortInfo::availablePorts()的返回值为QList<QSerialPortInfo> 每一个可用端口组成的容器
foreach(const QSerialPortInfo &info,QSerialPortInfo::availablePorts())
{
serial->setPort(info);
if(serial->open(QIODevice::ReadWrite)) // 以读写方式打开串口
{
// 在对象中设置串口
qDebug() << "串口打开成功";
serial->close(); // 关闭
} else
{
qDebug() << "串口打开失败，请重试";
}
}
//设置波特率
serial->setBaudRate( static_cast<QSerialPort::BaudRate> (ui->comboBox_2->currentText().toInt()) );
//设置停止位
serial->setStopBits( static_cast<QSerialPort::StopBits> (ui->comboBox_3->currentText().toInt()));
//设置数据位
serial->setDataBits( static_cast<QSerialPort::DataBits> (ui->comboBox_6->currentText().toInt()) );
//设置校验
serial->setParity ( static_cast<QSerialPort::Parity> (ui->comboBox_4->currentIndex()));
//设置流控
serial->setFlowControl(QSerialPort::NoFlowControl);
//改变按钮上的文本
ui->pushButton_5->setText("CLOSE");
//输出通道的端口名字
ui->lineEdit->setText(serial->portName());
isSerialOpen = serial->open(QIODevice::ReadWrite);
serial->setDataTerminalReady(true);
serial->setReadBufferSize(3);
if (!isSerialOpen) {
qDebug()<< QString("Failed to open serial port:") << serial->errorString();
serial->clearError();
}else {
qDebug()<< QString("The serial port is open: ") ;
}
}else{
ui->pushButton_5->setText("OPEN");
serial->close();
}
}My serial port settings such as baud rate and stop bit depend on the selection of the window;
Select parameter function:
void MainWindow::initConfig() {
// //创建对象，并建立信号槽
serial = new QSerialPort(this);
// //读函数的信号槽
QObject::connect(serial, &QSerialPort::readyRead, this, &MainWindow::serial_readyRead);
//添加波特率
QStringList baudList;
baudList << "115200" << "57600" << "9600" ;
ui->comboBox_2->addItems(baudList);
ui->comboBox_2->setCurrentText("115200");
//添加停止位
QStringList baudList1;
baudList1 << "0.5" << "1" << "1.5"<<"2" ;
ui->comboBox_3->addItems(baudList1);
ui->comboBox_3->setCurrentText("1");
//添加数据位
QStringList baudList2;
baudList2 << "8" << "9" ;
ui->comboBox_6->addItems(baudList2);
ui->comboBox_6->setCurrentText("8");
//奇偶校验
QStringList baudList3;
baudList3 << "NO" << "EVEN" ;
ui->comboBox_4->addItems(baudList3);
ui->comboBox_4->setCurrentText("NO");
}After configuring the serial port function, you need to write the serial port to send data and receive data;
send data:
void MainWindow::on_pushButton_3_clicked() //发送
{
if(ui->pushButton_5->text() == QString("CLOSE")) {
QByteArray data = ui->textEdit_2->toPlainText().toUtf8();
serial->write(data);
qDebug() <<serial ;
}else{
ui->textEdit->append("请打开串口!!!!!");
}
}Receive function:
void MainWindow::serial_readyRead()
{
//从接收缓冲区中读取数据
QByteArray buffer = serial->readAll();
//从界面中读取以前收到的数据
QString recv = ui->textEdit->toPlainText();
recv += QString(buffer);
//清空以前的显示
ui->textEdit->clear();
//重新显示
ui->textEdit->append(recv);
qDebug() <<recv<<"cxc" ;
}
Clear function:
void MainWindow::on_pushButton_2_clicked() //清除 接收
{
//清除显示
ui->textEdit->clear();
}There are so many main functions, and the complete code will be given later;
2.form.cpp main function
In fact, it is similar to the previous function type, except that the slot function is used to send data.
Initialization function:
void Form::on_pushButton_10_clicked()
{
if(ui->pushButton_10->text() == QString("打开串口")) {
//串口配置
//清空缓冲区
serial = new QSerialPort; //申请内存,并设置父对象
// 获取计算机中有效的端口号，然后将端口号的名称给端口选择控件
//QSerialPortInfo::availablePorts()的返回值为QList<QSerialPortInfo> 每一个可用端口组成的容器
foreach(const QSerialPortInfo &info,QSerialPortInfo::availablePorts())
{
serial->setPort(info);
if(serial->open(QIODevice::ReadWrite)) // 以读写方式打开串口
{
// 在对象中设置串口
qDebug() << "串口打开成功";
serial->close(); // 关闭
} else
{
qDebug() << "串口打开失败，请重试";
}
}
// 参数配置，波特率V
serial->setBaudRate(QSerialPort::Baud115200);
// 校验位，校验默认选择无
serial->setParity(QSerialPort::NoParity);
// 数据位，数据位默认选择8位
serial->setDataBits(QSerialPort::Data8);
// 停止位，停止位默认选择1位
serial->setStopBits(QSerialPort::OneStop);
// 控制流，默认选择无
serial->setFlowControl(QSerialPort::NoFlowControl);
//改变按钮上的文本
ui->pushButton_10->setText("关闭串口");
//输出通道的端口名字
bool isSerialOpen = serial->open(QIODevice::ReadWrite);
serial->setDataTerminalReady(true);
serial->setReadBufferSize(3);
if (!isSerialOpen) {
qDebug()<< QString("Failed to open serial port:") << serial->errorString();
serial->clearError();
configSetEnable1(false);
}else {
qDebug()<< QString("The serial port is open: ") ;
configSetEnable1(true);
}
}else{
configSetEnable1(false);
ui->pushButton_10->setText("打开串口");
serial->close();
}
}Send function:
void Form::on_pushButton_13_clicked()
{
QByteArray data ="55";
serial->write(data);
qDebug() <<serial ;
}
I only listed the main functions, and the complete code will be given later.
3. STM32 part
I use Xinyingda's STM32F103ZET6, JQ8900N-16P voice module, MQ135 module, MQ2 module, DHT11 temperature and humidity module and an LED screen.
There are too many codes in STM32, and they will be packaged into compressed files later. Let's take a look at the main function first.
1. main function
#include "stm32f10x.h"
#include "stm32f10x_conf.h"
#include <stdio.h>
#include <string.h>
#include "delay.h"
#include "usart.h"
#include "sys.h"
#include "led.h"
#include "key.h"
#include "relay.h"
#include "beep.h"
#include "time.h"
#include "lcd_gui.h"
#include "pic.h"
#include "touch.h"
#include "dht11.h"
#include "adc.h"
int main()
{
u8 T,H;
int num=0,i=0,X=0,Y=0;
u8 ledflag =1;
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
Delay_Init();
USART_Config(115200);
BEEPGpioInit();
LEDInit();
KEYGpioInit();
RELAYInit();
LCD_Init();
Adc_Init();
Voice_Config(9600);
int count=5;
Set_Song_Volume(5);
int bo=2;
char MQ[11]={'#','M','Q','1','3','5',':'};
char WEN[5];
char SHI[6];
char MQ22[10]={'#','M','Q','2',':'};
SHI[5]='\0';
WEN[4]='\0';
WEN[0]='T';
SHI[0]='H';
WEN[1]=':';
SHI[1]=':';
MQ[10]='\0';
MQ22[9]='\0';
// LCD_Dis_String(0,0,"棒打林渊!",0x0000, 0xffff, 2,0);
// LCD_Dis_String(0,32,"Hello Tomorrow",0x0000, 0xffff, 2,0);
while(1)
{
if(uart1_finish_flage)
{
if(strcmp(USART1_Rcv_Buff,"11") == 0){
LCD_Clear(0,239,0,319,0xffff);
//处理数据 USART1_Rcv_Buff
LED1_ON;
//处理结束将数组进行清空
LCD_Dis_String(0,0,"LED1_ON",0x0000, 0xffff, 2,0);
}else if(strcmp(USART1_Rcv_Buff,"12") == 0){
LCD_Clear(0,239,0,319,0xffff);
LED1_OFF;
LCD_Dis_String(0,0,"LED1_OFF",0x0000, 0xffff, 2,0);
}else if(strcmp(USART1_Rcv_Buff,"21") == 0){
LCD_Clear(0,239,0,319,0xffff);
LED2_ON;
LCD_Dis_String(0,0,"LED2_ON",0x0000, 0xffff, 2,0);
}else if(strcmp(USART1_Rcv_Buff,"22") == 0){
LCD_Clear(0,239,0,319,0xffff);
LED2_OFF;
LCD_Dis_String(0,0,"LED2_OFF",0x0000, 0xffff, 2,0);
}else if(strcmp(USART1_Rcv_Buff,"31") == 0){
LCD_Clear(0,239,0,319,0xffff);
LED3_ON;
LCD_Dis_String(0,0,"LED3_ON",0x0000, 0xffff, 2,0);
}else if(strcmp(USART1_Rcv_Buff,"32") == 0){
LCD_Clear(0,239,0,319,0xffff);
LED3_OFF;
LCD_Dis_String(0,0,"LED3_OFF",0x0000, 0xffff, 2,0);
}else if(strcmp(USART1_Rcv_Buff,"41") == 0){
LCD_Clear(0,239,0,319,0xffff);
LED4_ON;
LCD_Dis_String(0,0,"LED4_ON",0x0000, 0xffff, 2,0);
}else if(strcmp(USART1_Rcv_Buff,"42") == 0){
LCD_Clear(0,239,0,319,0xffff);
LED4_OFF;
LCD_Dis_String(0,0,"LED4_OFF",0x0000, 0xffff, 2,0);
}else if(strcmp(USART1_Rcv_Buff,"55") == 0){
Set_Song_Volume(count++);
}else if(strcmp(USART1_Rcv_Buff,"66") == 0){
Set_Song_Volume(count--);
}else if(strcmp(USART1_Rcv_Buff,"77") == 0){
Appoint_Song_Name("00001");
}else if(strcmp(USART1_Rcv_Buff,"88") == 0){
Stop_Song();
}else if(strcmp(USART1_Rcv_Buff,"99") == 0){
Xiayi_Song();
}else if(strcmp(USART1_Rcv_Buff,"98") == 0){
Shangyi_Song();
}else if(strcmp(USART1_Rcv_Buff,"13") == 0){
bo=1;
}else if(strcmp(USART1_Rcv_Buff,"14") == 0){
BEEP_ON;
}else if(strcmp(USART1_Rcv_Buff,"15") == 0){
BEEP_OFF;
}else if(strcmp(USART1_Rcv_Buff,"16") == 0){
bo=0;
}
memset(USART1_Rcv_Buff,0,sizeof(USART1_Rcv_Buff));
uart1_count = 0;
uart1_finish_flage =0;
}
if(bo==1){
dht11_read_ht(&T,&H);
LCD_Clear(0,239,0,319,0xffff);
// if(H>80)BEEP_ON ;else BEEP_OFF;
WEN[2]=T/10+'0';
WEN[3]=T%10+'0';
SHI[2]=H/100+'0';
SHI[3]=H/10%10+'0';
SHI[4]=H%10+'0';
int m=ADC_Val_Disp(Mq135);
int m2=ADC_Val_Disp(Mq2);
MQ[7]=m/100+'0';
MQ[8]=m/10%10+'0';
MQ[9]=m%10+'0';
MQ22[5]=m2/1000+'0';
MQ22[6]=m2/100%10+'0';
MQ22[7]=m2/10%10+'0';
MQ22[8]=m2%10+'0';
LCD_Clear(0,239,0,319,0xffff);
LCD_Dis_String(0,0,WEN,0x0000, 0xffff, 2,0);
LCD_Dis_String(0,32,SHI,0x0000, 0xffff, 2,0);
LCD_Dis_String(0,64,MQ,0x0000, 0xffff, 2,0);
LCD_Dis_String(0,32*3,MQ22,0x0000, 0xffff, 2,0);
Delay_ms(500);
}else if(bo==0){
LCD_Clear(0,239,0,319,0xffff);
bo=2;
}
}
return 0;
}
First send instructions to the single-chip microcomputer through QT, and the single-chip microcomputer will judge which kind of instruction it is after receiving it, and execute the corresponding operation.
3.QT complete code
My file is like this
1.shangwei.pro
QT += core gui
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
CONFIG += c++11
# The following define makes your compiler emit warnings if you use
# any Qt feature that has been marked deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS
# You can also make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0
SOURCES += \
form.cpp \
main.cpp \
mainwindow.cpp
HEADERS += \
form.h \
mainwindow.h
FORMS += \
form.ui \
mainwindow.ui
#串口通信
QT +=serialport
# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target
RESOURCES += \
rec.qrc
2.form.h
#ifndef FORM_H
#define FORM_H
#include <QWidget>
#include <QtSerialPort/QSerialPort> // 提供访问串口的功能
#include <QtSerialPort/QSerialPortInfo> // 提供系统中存在的串口信息
namespace Ui {
class Form;
}
class Form : public QWidget
{
Q_OBJECT
public:
explicit Form(QWidget *parent = nullptr);
~Form();
private slots:
void on_pushButton_clicked();
void on_pushButton_9_clicked();
void on_pushButton_2_clicked();
void on_pushButton_3_clicked();
void on_pushButton_4_clicked();
void on_pushButton_5_clicked();
void on_pushButton_6_clicked();
void on_pushButton_7_clicked();
void on_pushButton_8_clicked();
void on_pushButton_10_clicked();
void on_pushButton_13_clicked();
void on_pushButton_14_clicked();
void on_pushButton_11_clicked();
void on_pushButton_12_clicked();
void on_pushButton_16_clicked();
void on_pushButton_15_clicked();
void on_pushButton_19_clicked();
void on_pushButton_20_clicked();
void on_pushButton_21_clicked();
void on_pushButton_22_clicked();
private:
Ui::Form *ui;
QSerialPort *serial; //定义全局的串口对象
void configSetEnable1(bool b1);
};
#endif // FORM_H
3.mainwindow.h
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
//串口通信
#include "form.h"
#include <QtSerialPort/QSerialPort> // 提供访问串口的功能
#include <QtSerialPort/QSerialPortInfo> // 提供系统中存在的串口信息
QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACE
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
MainWindow(QWidget *parent = nullptr);
~MainWindow();
private slots:
void on_pushButton_clicked();
void on_pushButton_2_clicked();
void on_pushButton_3_clicked();
void on_pushButton_4_clicked();
void on_pushButton_5_clicked();
private:
Ui::MainWindow *ui;
void SerialPortInit(void);
void initConfig();
void serial_readyRead();
void configSetEnable(bool b);
//串口变量↓
QSerialPort *serial; //定义全局的串口对象
QStringList baudList; //波特率
QStringList parityList; //校验位
QStringList dataBitsList; //数据位
QStringList stopBitsList; //停止位
QStringList flowControlList; //控制流
bool isSerialOpen;
Form *form;
};
#endif // MAINWINDOW_H
4.form.cpp
#include "form.h"
#include "ui_form.h"
#include <QDebug>
#include "mainwindow.h"
#include "QLabel"
#include "QMovie"
Form::Form(QWidget *parent) :
QWidget(parent),
ui(new Ui::Form)
{
ui->setupUi(this);
configSetEnable1(false);
QMovie *movie = new QMovie(":/new/prefix1/image/83686B74CD2AF08B32BC013618CD188F.gif");
ui->label->setMovie(movie);
movie->start();
connect(ui->pushButton_17,&QPushButton::clicked,this,[=](){
movie->stop();
});
connect(ui->pushButton_18,&QPushButton::clicked,this,[=](){
movie->start();
});
}
Form::~Form()
{
delete ui;
}
void Form::on_pushButton_clicked() //点亮LED1
{
QByteArray data ="11";
serial->write(data);
qDebug() <<serial ;
}
void Form::on_pushButton_9_clicked()
{
serial->close();
MainWindow *w=new MainWindow;
w->show();
this->close();
}
void Form::on_pushButton_2_clicked() //熄灭LED1
{
QByteArray data ="12";
serial->write(data);
qDebug() <<serial ;
}
void Form::on_pushButton_3_clicked() //点亮LED2
{
QByteArray data ="21";
serial->write(data);
qDebug() <<serial ;
}
void Form::on_pushButton_4_clicked() //熄灭LED2
{
QByteArray data ="22";
serial->write(data);
qDebug() <<serial ;
}
void Form::on_pushButton_5_clicked() //点亮LED3
{
QByteArray data ="31";
serial->write(data);
qDebug() <<serial ;
}
void Form::on_pushButton_6_clicked() //熄灭LED3
{
QByteArray data ="32";
serial->write(data);
qDebug() <<serial ;
}
void Form::on_pushButton_7_clicked() //点亮LED4
{
QByteArray data ="41";
serial->write(data);
qDebug() <<serial ;
}
void Form::on_pushButton_8_clicked() //熄灭LED4
{
QByteArray data ="42";
serial->write(data);
qDebug() <<serial ;
}
void Form::on_pushButton_10_clicked()
{
if(ui->pushButton_10->text() == QString("打开串口")) {
//串口配置
//清空缓冲区
serial = new QSerialPort; //申请内存,并设置父对象
// 获取计算机中有效的端口号，然后将端口号的名称给端口选择控件
//QSerialPortInfo::availablePorts()的返回值为QList<QSerialPortInfo> 每一个可用端口组成的容器
foreach(const QSerialPortInfo &info,QSerialPortInfo::availablePorts())
{
serial->setPort(info);
if(serial->open(QIODevice::ReadWrite)) // 以读写方式打开串口
{
// 在对象中设置串口
qDebug() << "串口打开成功";
serial->close(); // 关闭
} else
{
qDebug() << "串口打开失败，请重试";
}
}
// 参数配置，波特率V
serial->setBaudRate(QSerialPort::Baud115200);
// 校验位，校验默认选择无
serial->setParity(QSerialPort::NoParity);
// 数据位，数据位默认选择8位
serial->setDataBits(QSerialPort::Data8);
// 停止位，停止位默认选择1位
serial->setStopBits(QSerialPort::OneStop);
// 控制流，默认选择无
serial->setFlowControl(QSerialPort::NoFlowControl);
//改变按钮上的文本
ui->pushButton_10->setText("关闭串口");
//输出通道的端口名字
bool isSerialOpen = serial->open(QIODevice::ReadWrite);
serial->setDataTerminalReady(true);
serial->setReadBufferSize(3);
if (!isSerialOpen) {
qDebug()<< QString("Failed to open serial port:") << serial->errorString();
serial->clearError();
configSetEnable1(false);
}else {
qDebug()<< QString("The serial port is open: ") ;
configSetEnable1(true);
}
}else{
configSetEnable1(false);
ui->pushButton_10->setText("打开串口");
serial->close();
}
}
void Form::on_pushButton_13_clicked()
{
QByteArray data ="55";
serial->write(data);
qDebug() <<serial ;
}
void Form::on_pushButton_14_clicked()
{
QByteArray data ="66";
serial->write(data);
qDebug() <<serial ;
}
void Form::on_pushButton_11_clicked()
{
QByteArray data ="77";
serial->write(data);
qDebug() <<serial ;
}
void Form::on_pushButton_12_clicked()
{
QByteArray data ="88";
serial->write(data);
qDebug() <<serial ;
}
void Form::on_pushButton_16_clicked()
{
QByteArray data ="99";
serial->write(data);
qDebug() <<serial ;
}
void Form::on_pushButton_15_clicked()
{
QByteArray data ="98";
serial->write(data);
qDebug() <<serial ;
}
void Form::configSetEnable1(bool b1)
{
ui->pushButton->setEnabled(b1);
ui->pushButton_2->setEnabled(b1);
ui->pushButton_3->setEnabled(b1);
ui->pushButton_4->setEnabled(b1);
ui->pushButton_5->setEnabled(b1);
ui->pushButton_6->setEnabled(b1);
ui->pushButton_7->setEnabled(b1);
ui->pushButton_8->setEnabled(b1);
ui->pushButton_11->setEnabled(b1);
ui->pushButton_12->setEnabled(b1);
ui->pushButton_13->setEnabled(b1);
ui->pushButton_14->setEnabled(b1);
ui->pushButton_16->setEnabled(b1);
ui->pushButton_15->setEnabled(b1);
ui->pushButton_19->setEnabled(b1);
ui->pushButton_20->setEnabled(b1);
ui->pushButton_21->setEnabled(b1);
ui->pushButton_22->setEnabled(b1);
// ui->pushButton_9->setEnabled(b1);
}
void Form::on_pushButton_19_clicked() //启动蜂鸣器
{
QByteArray data ="14";
serial->write(data);
qDebug() <<serial ;
}
void Form::on_pushButton_20_clicked() //关闭蜂鸣器
{
QByteArray data ="15";
serial->write(data);
qDebug() <<serial ;
}
void Form::on_pushButton_21_clicked()
{
QByteArray data ="13";
serial->write(data);
qDebug() <<serial ;
}
void Form::on_pushButton_22_clicked()
{
QByteArray data ="16";
serial->write(data);
qDebug() <<serial ;
}
5.main.cpp
#include "mainwindow.h"
#include <QApplication>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow w;
w.show();
return a.exec();
}
6.mainwindow.cpp
#include "mainwindow.h"
#include "ui_mainwindow.h"
//串口通信
#include <QDebug>
#include <QString>
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
, ui(new Ui::MainWindow)
{
ui->setupUi(this);
initConfig();
form=new Form;
QObject::connect(serial, &QSerialPort::readyRead, this, &MainWindow::serial_readyRead);
//固定大小
}
MainWindow::~MainWindow()
{
delete ui;
}
void MainWindow::SerialPortInit()
{
serial = new QSerialPort; //申请内存,并设置父对象
// 获取计算机中有效的端口号，然后将端口号的名称给端口选择控件
//QSerialPortInfo::availablePorts()的返回值为QList<QSerialPortInfo> 每一个可用端口组成的容器
foreach(const QSerialPortInfo &info,QSerialPortInfo::availablePorts())
{
serial->setPort(info);
if(serial->open(QIODevice::ReadWrite)) // 以读写方式打开串口
{
// 在对象中设置串口
qDebug() << "串口打开成功";
serial->close(); // 关闭
} else
{
qDebug() << "串口打开失败，请重试";
}
}
// 参数配置，波特率V
serial->setBaudRate(QSerialPort::Baud19200);
// 校验位，校验默认选择无
serial->setParity(QSerialPort::NoParity);
// 数据位，数据位默认选择8位
serial->setDataBits(QSerialPort::Data8);
// 停止位，停止位默认选择1位
serial->setStopBits(QSerialPort::OneStop);
// 控制流，默认选择无
serial->setFlowControl(QSerialPort::NoFlowControl);
}
void MainWindow::on_pushButton_clicked()
{
form->show();
serial->close();
this->close();
}
void MainWindow::on_pushButton_2_clicked() //清除 接收
{
//清除显示
ui->textEdit->clear();
}
void MainWindow::on_pushButton_3_clicked() //发送
{
if(ui->pushButton_5->text() == QString("CLOSE")) {
QByteArray data = ui->textEdit_2->toPlainText().toUtf8();
serial->write(data);
qDebug() <<serial ;
}else{
ui->textEdit->append("请打开串口!!!!!");
}
}
void MainWindow::on_pushButton_4_clicked() //清除发送
{
//清除显示
ui->textEdit_2->clear();
}
void MainWindow::on_pushButton_5_clicked() //打开，关闭
{ //是OPEN时，代表没有打开串口
if(ui->pushButton_5->text() == QString("OPEN")) {
//检查串口是否被占用，再次检查一遍
//串口配置
//清空缓冲区
serial = new QSerialPort; //申请内存,并设置父对象
// 获取计算机中有效的端口号，然后将端口号的名称给端口选择控件
//QSerialPortInfo::availablePorts()的返回值为QList<QSerialPortInfo> 每一个可用端口组成的容器
foreach(const QSerialPortInfo &info,QSerialPortInfo::availablePorts())
{
serial->setPort(info);
if(serial->open(QIODevice::ReadWrite)) // 以读写方式打开串口
{
// 在对象中设置串口
qDebug() << "串口打开成功";
serial->close(); // 关闭
} else
{
qDebug() << "串口打开失败，请重试";
}
}
//设置波特率
serial->setBaudRate( static_cast<QSerialPort::BaudRate> (ui->comboBox_2->currentText().toInt()) );
//设置停止位
serial->setStopBits( static_cast<QSerialPort::StopBits> (ui->comboBox_3->currentText().toInt()));
//设置数据位
serial->setDataBits( static_cast<QSerialPort::DataBits> (ui->comboBox_6->currentText().toInt()) );
//设置校验
serial->setParity ( static_cast<QSerialPort::Parity> (ui->comboBox_4->currentIndex()));
//设置流控
serial->setFlowControl(QSerialPort::NoFlowControl);
//改变按钮上的文本
ui->pushButton_5->setText("CLOSE");
//输出通道的端口名字
ui->lineEdit->setText(serial->portName());
isSerialOpen = serial->open(QIODevice::ReadWrite);
serial->setDataTerminalReady(true);
serial->setReadBufferSize(3);
if (!isSerialOpen) {
qDebug()<< QString("Failed to open serial port:") << serial->errorString();
serial->clearError();
}else {
qDebug()<< QString("The serial port is open: ") ;
}
}else{
ui->pushButton_5->setText("OPEN");
serial->close();
}
}
void MainWindow::initConfig() {
// //创建对象，并建立信号槽
serial = new QSerialPort(this);
// //读函数的信号槽
QObject::connect(serial, &QSerialPort::readyRead, this, &MainWindow::serial_readyRead);
//添加波特率
QStringList baudList;
baudList << "115200" << "57600" << "9600" ;
ui->comboBox_2->addItems(baudList);
ui->comboBox_2->setCurrentText("115200");
//添加停止位
QStringList baudList1;
baudList1 << "0.5" << "1" << "1.5"<<"2" ;
ui->comboBox_3->addItems(baudList1);
ui->comboBox_3->setCurrentText("1");
//添加数据位
QStringList baudList2;
baudList2 << "8" << "9" ;
ui->comboBox_6->addItems(baudList2);
ui->comboBox_6->setCurrentText("8");
//奇偶校验
QStringList baudList3;
baudList3 << "NO" << "EVEN" ;
ui->comboBox_4->addItems(baudList3);
ui->comboBox_4->setCurrentText("NO");
}
void MainWindow::serial_readyRead()
{
//从接收缓冲区中读取数据
QByteArray buffer = serial->readAll();
//从界面中读取以前收到的数据
QString recv = ui->textEdit->toPlainText();
recv += QString(buffer);
//清空以前的显示
ui->textEdit->clear();
//重新显示
ui->textEdit->append(recv);
qDebug() <<recv<<"cxc" ;
}
void MainWindow::configSetEnable(bool b)
{
// ui->comboBox_2->setEnabled(b);
// ui->comboBox_3->setEnabled(b);
// ui->comboBox_6->setEnabled(b);
// ui->comboBox_4->setEnabled(b);
// //
// ui->pushButton_3->setEnabled(!b);
}
4. STM32 complete code
There are too many codes, and they will be packaged into compressed files later.
5. Realize the effect
The effect is the same as the button name, the computer clicks to play the music, the MCU plays music, clicks to light up LED1, and LED1 will light up. Click to refresh the data, and the LCD will display the collected temperature and humidity data, MQ135 data, and MQ2 data.