串口通信代码

Posted 2022-12-13 deep_learninger

#include<iostream>
#include<windows.h>
 
using namespace std;
 
int main()

    HANDLE hcom;
    hcom = CreateFile("COM1",GENERIC_READ | GENERIC_WRITE,0,NULL,OPEN_EXISTING 
                        ,FILE_ATTRIBUTE_NORMAL,NULL);
    if (hcom == INVALID_HANDLE_VALUE)
   
        return -1;
   
    SetupComm(hcom,1024,1024);
    DCB dcb;
    GetCommState(hcom,&dcb);
    dcb.BaudRate = 4800;
    dcb.ByteSize = 8;
    dcb.Parity = 0;
    dcb.StopBits = 1;
    SetCommState(hcom,&dcb);
    char data[]=0xA0, 0x01, 0x00, 0x08, 0x00, 0x30, 0xAF, 0x39;
    DWORD dwWrittenLen = 0;
    if(!WriteFile(hcom,data,8,&dwWrittenLen,NULL))
   
        return -1;
   
    return 0;