如何用VC从串口中读写数据，请给各位大虾给予帮助。

[winne_ll]

对COM1或COM2口写操作是可以的，但是如何从串口中读数据，它是用于与单片机通讯的，请大家帮忙。

[yleng]

要先定义一个数组来存放要读的数据，用函数ReadFile().

[zhaotao0982]

有一个Mscomm的控件，你可以看一下，它可以进行串行通讯

[mengko]

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

[bskay]

CreateFile

[qiuanhong]

写：WriteFile()
读：ReadFile()

[garping]

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!!

[garping]

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!!