C++不占用串口如何监听串口信息
时间: 2023-09-07 17:12:14 浏览: 46
在C++中,可以使用Windows API中的CreateFile函数打开串口并进行监听。以下是一个示例代码:
```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::cerr << "Failed to open COM port!" << std::endl;
return 1;
}
DCB dcb;
if (!GetCommState(hCom, &dcb)) {
std::cerr << "Failed to get DCB settings!" << std::endl;
CloseHandle(hCom);
return 1;
}
dcb.BaudRate = CBR_9600;
dcb.Parity = NOPARITY;
dcb.ByteSize = 8;
dcb.StopBits = ONESTOPBIT;
if (!SetCommState(hCom, &dcb)) {
std::cerr << "Failed to set DCB settings!" << std::endl;
CloseHandle(hCom);
return 1;
}
char buffer[1024];
DWORD bytesRead;
while (true) {
if (ReadFile(hCom, buffer, sizeof(buffer), &bytesRead, NULL)) {
std::cout << "Received data: " << std::string(buffer, bytesRead) << std::endl;
}
}
CloseHandle(hCom);
return 0;
}
```
这段代码使用CreateFile函数打开COM1串口,并设置波特率为9600,无奇偶校验,8位数据位,1位停止位。然后通过ReadFile函数不断读取串口传来的数据,并输出到控制台上。