怎么写串口通信程序

时间:2025-01-17 19:35:09 游戏攻略

编写串口通信程序需要根据所使用的编程语言和操作系统进行不同的操作。以下是几种常见编程语言的串口通信程序示例:

1. 使用Qt Creator和C++编写的串口通信程序

```cpp

include

include

include

class MainWindow : public QMainWindow {

Q_OBJECT

public:

MainWindow(QWidget *parent = nullptr) : QMainWindow(parent) {

// 定义串口参数

struct PortSettings myComSetting = {BAUD9600, DATA_8, PAR_NONE, STOP_1, FLOW_OFF, 500};

myCom = new Win_QextSerialPort("com1", myComSetting, QextSerialBase::EventDriven);

myCom->open(QIODevice::ReadWrite); // 打开串口

connect(myCom, SIGNAL(readyRead()), this, SLOT(readMyCom())); // 信号和槽函数关联

}

private slots:

void readMyCom() {

QByteArray temp = myCom->readAll(); // 读取串口缓冲区的所有数据

ui->textBrowser->insertPlainText(temp); // 将串口数据显示在窗口的文本浏览器中

}

private:

Win_QextSerialPort *myCom;

Ui::MainWindow *ui;

};

int main(int argc, char *argv[]) {

QCoreApplication a(argc, argv);

MainWindow w;

w.show();

return a.exec();

}

include "main.moc"

```

2. 使用Python和Pyserial编写的串口通信程序

```python

import serial

import time

初始化串口连接

ser = serial.Serial('COM3', 9600, timeout=1)

print("串口已连接:", ser.is_open)

发送数据到串口

ser.write(b'Hello Device!')

读取数据

data = ser.read(5)

print(data)

关闭串口

ser.close()

```

3. 使用C语言和Linux操作系统编写的串口通信程序

```c

include

include

include

include

include

include

include

int main() {

int fd = open("/dev/ttyUSB0", O_RDWR | O_NOCTTY);

if (fd == -1) {

perror("打开串口失败");

exit(1);

}

struct termios options;

if (tcgetattr(fd, &options) == -1) {

perror("获取串口设置失败");

exit(1);

}

cfsetispeed(&options, B9600);

cfsetospeed(&options, B9600);

options.c_cflag &= ~PARENB;

options.c_cflag &= ~CSTOPB;

options.c_cflag &= ~CSIZE;

options.c_cflag |= CS8;

if (tcsetattr(fd, TCSANOW, &options) == -1) {

perror("更新串口设置失败");

exit(1);

}

char buffer;

while (1) {

ssize_t len = read(fd, buffer, sizeof(buffer));

if (len == -1) {

perror("读取串口数据失败");

exit(1);

}

printf("%.*s", len, buffer);

}

close(fd);

return 0;

}

```

4. 使用C和.NET编写的串口通信程序