c++串口通信
时间: 2023-07-19 12:13:14 浏览: 77
在C++中进行串口通信,可以使用Windows API中的CreateFile、ReadFile、WriteFile、SetCommState等函数。以下是一个简单的例子:
```cpp
#include <Windows.h>
#include <iostream>
int main()
{
HANDLE hCom = CreateFile("COM1", GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL);
if (hCom == INVALID_HANDLE_VALUE)
{
std::cout << "Failed to open COM port." << std::endl;
return 1;
}
DCB dcb;
GetCommState(hCom, &dcb);
dcb.BaudRate = CBR_9600;
dcb.ByteSize = 8;
dcb.Parity = NOPARITY;
dcb.StopBits = ONESTOPBIT;
SetCommState(hCom, &dcb);
char data[] = "Hello, world!";
DWORD written;
WriteFile(hCom, data, sizeof(data), &written, NULL);
std::cout << "Bytes written: " << written << std::endl;
char buffer[1024];
DWORD read;
ReadFile(hCom, buffer, sizeof(buffer), &read, NULL);
std::cout << "Bytes read: " << read << std::endl;
std::cout << "Data received: " << buffer << std::endl;
CloseHandle(hCom);
return 0;
}
```
在上述代码中,我们使用CreateFile函数打开串口,使用SetCommState函数设置串口参数,使用WriteFile函数向串口发送数据,使用ReadFile函数从串口读取数据。请注意,以上代码仅供参考,实际应用需要根据具体情况进行修改。
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