如何用VC从串口中读写数据，请给各位大虾给予帮助。

Question

写：WriteFile()
读：ReadFile()

Answer 1

 要先定义一个数组来存放要读的数据，用函数ReadFile().

Answer 2

有一个Mscomm的控件，你可以看一下，它可以进行串行通讯

Answer 3

go to see here  http://roaringwind.best.163.com/

Answer 4

读写串口如下：
HANDLE hComm1;
hComm1=CreateFile("COM1",GENERIC_READ|GENERIC_WRITE,0,NULL,OPEN_EXISTING,FILE_FLAG_OVERLAPPED,NULL);
if(hComm1==(HANDLE)-1)
AfxMessageBox("Printer1 initialize error!",MB_OK); //COM1 SetCommMask(hComm1,EV_RXFLAG);
SetupComm(hComm1,8192,8192);
GetCommState(hComm1,&dcb);
dcb.BaudRate=9600;
dcb.fRtsControl=RTS_CONTROL_ENABLE;
dcb.fDtrControl=DTR_CONTROL_ENABLE;
SetCommState(hComm1,&dcb);
         ClearCommError(hComm1,&dwErrorFlag,&comState);
           ReadFile(hComm1,cReadBuffer,dwLength,&dwLength,&ovReadOs);
          WriteFile(hComm1,cReadBuffer,dwLength,&dwLength,&ovReadOs);
即可!!

Answer 5

读写串口如下：
HANDLE hComm1;
hComm1=CreateFile("COM1",GENERIC_READ|GENERIC_WRITE,0,NULL,OPEN_EXISTING,FILE_FLAG_OVERLAPPED,NULL);
if(hComm1==(HANDLE)-1)
AfxMessageBox("Printer1 initialize error!",MB_OK); //COM1 SetCommMask(hComm1,EV_RXFLAG);
SetupComm(hComm1,8192,8192);
GetCommState(hComm1,&dcb);
dcb.BaudRate=9600;
dcb.fRtsControl=RTS_CONTROL_ENABLE;
dcb.fDtrControl=DTR_CONTROL_ENABLE;
SetCommState(hComm1,&dcb);
         ClearCommError(hComm1,&dwErrorFlag,&comState);
           ReadFile(hComm1,cReadBuffer,dwLength,&dwLength,&ovReadOs);
          WriteFile(hComm1,cReadBuffer,dwLength,&dwLength,&ovReadOs);
即可!!