vs2022串口通信

在VS2022中进行串口通信，可以使用Windows API函数来实现。首先，你需要打开串口并设置其属性，然后可以使用ReadFile和WriteFile函数来进行数据的读取和发送。

下面是一个简单的示例代码，用于在VS2022中进行串口通信：

#include <iostream>
#include <Windows.h>

int main()
{
    // 打开串口
    HANDLE hCom = CreateFile(L"COM3", GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL);
    if (hCom == INVALID_HANDLE_VALUE)
    {
        std::cout << "Failed to open the serial port." << std::endl;
        return 0;
    }

    // 设置串口属性
    DCB dcbSerialParams = { 0 };
    dcbSerialParams.DCBlength = sizeof(dcbSerialParams);
    if (!GetCommState(hCom, &dcbSerialParams))
    {
        std::cout << "Failed to get the serial port parameters." << std::endl;
        CloseHandle(hCom);
        return 0;
    }
    dcbSerialParams.BaudRate = CBR_19200;
    dcbSerialParams.ByteSize = 8;
    dcbSerialParams.StopBits = ONESTOPBIT;
    dcbSerialParams.Parity = EVENPARITY;
    if (!SetCommState(hCom, &dcbSerialParams))
    {
        std::cout << "Failed to set the serial port parameters." << std::endl;
        CloseHandle(hCom);
        return 0;
    }

    // 设置串口超时属性
    COMMTIMEOUTS timeouts = { 0 };
    timeouts.ReadIntervalTimeout = 50;
    timeouts.ReadTotalTimeoutConstant = 50;
    timeouts.ReadTotalTimeoutMultiplier = 10;
    timeouts.WriteTotalTimeoutConstant = 50;
    timeouts.WriteTotalTimeoutMultiplier = 10;
    if (!SetCommTimeouts(hCom, &timeouts))
    {
        std::cout << "Failed to set the serial port timeouts." << std::endl;
        CloseHandle(hCom);
        return 0;
    }

    // 读取和发送数据
    char buffer[256];
    DWORD bytesRead;

    if (!ReadFile(hCom, buffer, sizeof(buffer), &bytesRead, NULL))
    {
        std::cout << "Failed to read data from the serial port." << std::endl;
    }
    else
    {
        std::cout << "Received data: " << buffer << std::endl;
    }

    char sendData[] = "Hello, world!";
    DWORD bytesSent;
    if (!WriteFile(hCom, sendData, sizeof(sendData), &bytesSent, NULL))
    {
        std::cout << "Failed to send data to the serial port." << std::endl;
    }
    else
    {
        std::cout << "Sent data: " << sendData << std::endl;
    }

    // 关闭串口
    CloseHandle(hCom);

    return 0;
}