├── README.md
├── other
└── processing.png
└── src
├── Com.pro
├── Com.pro.user
├── main.cpp
├── mainwindow.cpp
├── mainwindow.h
└── mainwindow.ui
/README.md:
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1 | # Qt SerialPort Programming Demo
2 | 基于Qt的串口通信演示
3 | ##程序截图
4 | 
5 |
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/other/processing.png:
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https://raw.githubusercontent.com/UtoYuri/Qt-SerialPort-Programming-Demo/f51432cbb48b390dc85e67a2aa9fde5050f84e71/other/processing.png
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/src/Com.pro:
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1 | #-------------------------------------------------
2 | #
3 | # Project created by QtCreator 2016-07-23T16:37:40
4 | #
5 | #-------------------------------------------------
6 |
7 | QT += core gui serialport
8 |
9 | greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
10 |
11 | TARGET = Com
12 | TEMPLATE = app
13 |
14 |
15 | SOURCES += main.cpp\
16 | mainwindow.cpp
17 |
18 | HEADERS += mainwindow.h
19 |
20 | FORMS += mainwindow.ui
21 |
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/src/main.cpp:
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1 | #include "mainwindow.h"
2 | #include
3 |
4 | int main(int argc, char *argv[])
5 | {
6 | QApplication a(argc, argv);
7 | MainWindow w;
8 | w.show();
9 |
10 | return a.exec();
11 | }
12 |
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/src/mainwindow.cpp:
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1 | #include "mainwindow.h"
2 | #include "ui_mainwindow.h"
3 |
4 | MainWindow::MainWindow(QWidget *parent) :
5 | QMainWindow(parent),
6 | ui(new Ui::MainWindow)
7 | {
8 | ui->setupUi(this);
9 |
10 | this->serialPort = new QSerialPort;
11 | findFreePorts();
12 |
13 | connect(ui->openCom, &QCheckBox::toggled, [=](bool checked){
14 | if (checked){
15 | initSerialPort();
16 | ui->btnSend->setEnabled(true);
17 | }else{
18 | this->serialPort->close();
19 | ui->btnSend->setEnabled(false);
20 | ui->openCom->setChecked(false);
21 | }
22 | });
23 |
24 | connect(this->serialPort, SIGNAL(readyRead()), this, SLOT(recvMsg()));
25 | connect(ui->btnSend, &QPushButton::clicked, [=](){
26 | sendMsg(ui->message->toPlainText());
27 | });
28 | }
29 |
30 | MainWindow::~MainWindow()
31 | {
32 | delete ui;
33 | }
34 |
35 | //寻找空闲状态串口
36 | void MainWindow::findFreePorts(){
37 | QList ports = QSerialPortInfo::availablePorts();
38 | for (int i = 0; i < ports.size(); ++i){
39 | if (ports.at(i).isBusy()){
40 | ports.removeAt(i);
41 | continue;
42 | }
43 | ui->portName->addItem(ports.at(i).portName());
44 | }
45 | if (!ports.size()){
46 | QMessageBox::warning(NULL,"Tip",QStringLiteral("找不到空闲串口"));
47 | return;
48 | }
49 | }
50 | //初始化串口
51 | bool MainWindow::initSerialPort(){
52 | this->serialPort->setPortName(ui->portName->currentText());
53 | if (!this->serialPort->open(QIODevice::ReadWrite)){
54 | QMessageBox::warning(NULL,"Tip",QStringLiteral("串口打开失败"));
55 | return false;
56 | }
57 | this->serialPort->setBaudRate(ui->baudRate->currentText().toInt());
58 |
59 | if (ui->dataBits->currentText().toInt() == 8){
60 | this->serialPort->setDataBits(QSerialPort::Data8);
61 | }else if (ui->dataBits->currentText().toInt() == 7){
62 | this->serialPort->setDataBits(QSerialPort::Data7);
63 | }else if (ui->dataBits->currentText().toInt() == 6){
64 | this->serialPort->setDataBits(QSerialPort::Data6);
65 | }else if (ui->dataBits->currentText().toInt() == 5){
66 | this->serialPort->setDataBits(QSerialPort::Data5);
67 | }
68 |
69 | if (ui->stopBits->currentText().toInt() == 1){
70 | this->serialPort->setStopBits(QSerialPort::OneStop);
71 | }else if (ui->stopBits->currentText().toInt() == 2){
72 | this->serialPort->setStopBits(QSerialPort::TwoStop);
73 | }
74 |
75 |
76 | if(ui->parity->currentText() == "NoParity"){
77 | this->serialPort->setParity(QSerialPort::NoParity);
78 | }else if (ui->parity->currentText() == "EvenParity"){
79 | this->serialPort->setParity(QSerialPort::EvenParity);
80 | }else if (ui->parity->currentText() == "OddParity"){
81 | this->serialPort->setParity(QSerialPort::OddParity);
82 | }
83 | return true;
84 | }
85 | //向串口发送信息
86 | void MainWindow::sendMsg(const QString &msg){
87 | this->serialPort->write(QByteArray::fromHex(msg.toLatin1()));
88 | ui->comLog->insertPlainText(QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss") + " [send] " + msg + "\n");
89 | }
90 | //接受来自串口的信息
91 | void MainWindow::recvMsg(){
92 | QByteArray msg = this->serialPort->readAll();
93 | //do something
94 | ui->comLog->insertPlainText(QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss") + " [recieve] " + msg.toHex().data() + "\n");
95 | }
96 |
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/src/mainwindow.h:
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1 | #ifndef MAINWINDOW_H
2 | #define MAINWINDOW_H
3 |
4 | #include
5 | #include
6 | #include
7 |
8 | #include
9 | #include
10 | #include
11 |
12 | namespace Ui {
13 | class MainWindow;
14 | }
15 |
16 | class MainWindow : public QMainWindow
17 | {
18 | Q_OBJECT
19 |
20 | public:
21 | explicit MainWindow(QWidget *parent = 0);
22 | ~MainWindow();
23 |
24 | protected:
25 | void findFreePorts();
26 | bool initSerialPort();
27 | void sendMsg(const QString &msg);
28 |
29 | public slots:
30 | void recvMsg();
31 |
32 | private:
33 | Ui::MainWindow *ui;
34 |
35 | QSerialPort *serialPort;
36 | };
37 |
38 | #endif // MAINWINDOW_H
39 |
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/src/mainwindow.ui:
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1 |
2 |
3 | MainWindow
4 |
5 |
6 |
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8 | 0
9 | 660
10 | 494
11 |
12 |
13 |
14 | Qt串口通信
15 |
16 |
17 |
18 |
19 |
20 | 10
21 | 10
22 | 361
23 | 351
24 |
25 |
26 |
27 | 通信日志
28 |
29 |
30 |
31 |
32 | 10
33 | 20
34 | 341
35 | 321
36 |
37 |
38 |
39 |
40 |
41 |
42 |
43 | 380
44 | 10
45 | 271
46 | 351
47 |
48 |
49 |
50 | 串口参数
51 |
52 |
53 |
54 |
55 | 30
56 | 300
57 | 131
58 | 31
59 |
60 |
61 |
62 | 打开串口
63 |
64 |
65 |
66 |
67 |
68 | 20
69 | 30
70 | 231
71 | 261
72 |
73 |
74 |
75 | -
76 |
77 |
-
78 |
79 |
80 | 串口：
81 |
82 |
83 |
84 | -
85 |
86 |
87 |
88 |
89 | -
90 |
91 |
-
92 |
93 |
94 | 数据位：
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96 |
97 |
98 | -
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100 |
-
101 |
102 | 8
103 |
104 |
105 | -
106 |
107 | 7
108 |
109 |
110 | -
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113 |
114 |
115 | -
116 |
117 | 5
118 |
119 |
120 |
121 |
122 |
123 |
124 | -
125 |
126 |
-
127 |
128 |
129 | 波特率：
130 |
131 |
132 |
133 | -
134 |
135 |
-
136 |
137 | 9600
138 |
139 |
140 | -
141 |
142 | 4800
143 |
144 |
145 | -
146 |
147 | 19200
148 |
149 |
150 | -
151 |
152 | 38400
153 |
154 |
155 |
156 |
157 |
158 |
159 | -
160 |
161 |
-
162 |
163 |
164 | 停止位：
165 |
166 |
167 |
168 | -
169 |
170 |
-
171 |
172 | 1
173 |
174 |
175 | -
176 |
177 | 2
178 |
179 |
180 |
181 |
182 |
183 |
184 | -
185 |
186 |
-
187 |
188 |
189 | 校验位：
190 |
191 |
192 |
193 | -
194 |
195 |
-
196 |
197 | NoParity
198 |
199 |
200 | -
201 |
202 | EvenParity
203 |
204 |
205 | -
206 |
207 | OddParity
208 |
209 |
210 |
211 |
212 |
213 |
214 |
215 |
216 |
217 |
218 |
219 |
220 | 10
221 | 370
222 | 641
223 | 111
224 |
225 |
226 |
227 | 发送
228 |
229 |
230 |
231 |
232 | 10
233 | 20
234 | 621
235 | 81
236 |
237 |
238 |
239 | -
240 |
241 |
242 | -
243 |
244 |
245 | false
246 |
247 |
248 | 发送
249 |
250 |
251 |
252 |
253 |
254 | message
255 | message
256 | btnSend
257 |
258 |
259 |
260 |
261 |
262 |
263 |
264 |
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