c_cpp 把串口的操作当作一种文件的方式来处理

Posted 2021-05-14

#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <windows.h>
#include <wincon.h>

  hComm = CreateFile("COM1",GENERIC_READ|GENERIC_WRITE,0,NULL,OPEN_EXISTING,FILE_FLAG_OVERLAPPED,0);
  if (hComm==INVALID_HANDLE_VALUE)
    {
        hComm = NULL;
        MessageBoxA(NULL, "Can not open the com1 port", "Playwav", MB_OK);
        CloseHandle(hComm);
        return;
    }