磁动力电子--电子＆单片机--用vc++6_0实现pc机与单片机之间的数据交换.mht

详解一个电脑串口控制单片机驱动继电器的例子（全部源代码）

=AF=B3=CC=B6=C8=BD=CF=B8=DF=A3=AC=CA=B9=D3=C3=BD=CF=C0=A7=C4=D1=A3=BB=B5=DA=
=B6=FE=D6=D6=D0=E8=D2=AA=C1=CB=BD=E2=D3=B2=BC=FE=B5=E7=C2=B7=BD=E1=B9=B9=D4=
=AD=C0=ED=A3=BB=B5=DA=C8=FD=D6=D6=B7=BD=B7=A8=BF=B4=C0=B4=BD=CF=BC=F2=B5=A5=
=A3=AC=D6=BB=D0=E8=D2=AA=B6=D4=B4=AE=BF=DA=BD=F8=D0=D0=BC=F2=B5=A5=C5=E4=D6=
=C3=A3=AC=B5=AB=CA=C7=D3=C9=D3=DA=CA=B9=D3=C3=C1=EE=C8=CB=B7=D1=BD=E2=B5=C4=
VARIANT=20
                  =C0=E0=A3=AC=CA=B9=D3=C3=D2=B2=B2=BB=CA=C7=BA=DC=C8=DD =

                  =
=D2=D7=A3=BB=B5=DA=CB=C4=D6=D6=B7=BD=B7=A8=CA=C7=C0=FB=D3=C3=D2=BB=D6=D6=D3=
=C3=D3=DA=B4=AE=D0=D0=CD=A8=D0=C5=B5=C4CSerial=C0=E0=A3=A8=D5=E2=D6=D6=C0=
=E0=CA=C7=D3=C9=B5=DA=C8=FD=B7=BD=CC=E1=B9=A9=A3=A9=A3=AC=D6=BB=D2=AA=C0=ED=
=BD=E2=D5=E2=D6=D6=C0=E0=B5=C4=BC=B8=B8=F6=B3=C9=D4=B1=BA=AF=CA=FD=A3=AC=BE=
=CD=C4=DC=B7=BD=B1=E3=B5=C4=CA=B9=20
                  =
=D3=C3=A1=A3=B1=CA=D5=DF=C0=FB=D3=C3CSerial=C0=E0=BA=DC=B7=BD=B1=E3=B5=D8=
=CA=B5=CF=D6=C1=CB=D4=DA=B9=CC=B6=A8=CA=BDEBM=C6=F8=C8=DC=BD=BA=C3=F0=BB=F0=
=CF=B5=CD=B3=B7=D6=C7=F8=C6=F4=B6=AF=C6=F7=A3=A8=B5=A5=C6=AC=BB=FA=CF=B5=CD=
=B3=A3=A9=D3=EB=C9=CF=CE=BB=BB=FA=B5=C4=CD=A8=D0=C5=A1=A3=D2=D4=CF=C2=BD=AB=
=BD=E1=BA=CF=CA=B5=C0=FD=A3=AC=B8=F8=B3=F6=CA=B5=CF=D6=B4=AE=D0=D0=CD=A8=D0=
=C5=B5=C4=BC=B8=D6=D6=B7=BD=B7=A8=A1=A3=20

                  <P><B>1 Windows =
API=CD=A8=D0=C5=BA=AF=CA=FD=B7=BD=B7=A8</B></P>
                  =
<P>=A1=A1=A1=A1=D3=EB=CD=A8=D0=C5=D3=D0=B9=D8=B5=C4Windows =
API=BA=AF=CA=FD=B9=B2=D3=D026=B8=F6=A3=AC=B5=AB=D6=F7=D2=AA=D3=D0=B9=D8=B5=
=C4=D3=D0=A3=BA</P>
                  <P>CreateFile() =D3=C3 =
=A1=B0comn=A1=B1=A3=A8n=CE=AA=B4=AE=BF=DA=BA=C5=A3=A9=D7=F7=CE=AA=CE=C4=BC=
=FE=C3=FB=BE=CD=BF=C9=D2=D4=B4=F2=BF=AA=B4=AE=BF=DA=A1=A3<BR>ReadFile()=20
                  =B6=C1=B4=AE=BF=DA=A1=A3<BR>WriteFile() =
=D0=B4=B4=AE=BF=DA=A1=A3<BR>CloseHandle()=20
                  =
=B9=D8=B1=D5=B4=AE=BF=DA=BE=E4=B1=FA=A1=A3<BR>=A1=A1=A1=A1=B3=F5=CA=BC=BB=
=AF=CA=B1=D3=A6=D7=A2=D2=E2CreateFile()=BA=AF=CA=FD=D6=D0=B4=AE=BF=DA=B9=B2=
=CF=ED=B7=BD=CA=BD=D3=A6=C9=E8=CE=AA0=A3=AC=B4=AE=BF=DA=CE=AA=B2=BB=BF=C9=
=B9=B2=CF=ED=C9=E8=B1=B8=A3=AC=C6=E4=CB=FC=D3=EB=D2=BB=B0=E3=CE=C4=BC=FE=B6=
=C1=D0=B4=C0=E0=CB=C6=A1=A3=D2=D4=CF=C2=B8=F8=B3=F6API=CA=B5<BR>=CF=D6=B5=
=C4=D4=B4=B4=FA=C2=EB=A1=A3</P>
                  <P><B>1.1 =B7=A2=CB=CD=B5=C4=C0=FD=B3=CC</B></P>
                  <P>//=C9=F9=C3=F7=C8=AB=BE=D6=B1=E4=C1=BF</P>
                  <P>HANDLE m_hIDComDev=A3=BB<BR>OVERLAPPED =
m_OverlappedRead, m_Over=20
                  lappedWrite;</P>
                  <P>//=B3=F5=CA=BC=BB=AF=B4=AE=BF=DA</P>
                  <P>void=20
                  =
CSerialAPIView::OnInitialUpdate()<BR>{<BR>CView::OnInitialUpdate();<BR>Ch=
ar=20
                  szComParams[50];<BR>DCB =
dcb;<BR>Memset(&amp;m_OverlappedRead,=20
                  0, sizeof =
(OVERLAPPED));<BR>Memset(&amp;m_OverlappedWrite, 0,=20
                  sizeof (OVERLAPPED));</P>
                  <P>m_hIDComDev =3D NULL;<BR>m_hIDComDev =3D =
CreateFile(=A1=B0COM2=A1=B1,=20
                  GENERIC_READ=A9=A6GENERIC_WRITE, 0, =
NULL,<BR>OPEN_EXISTING,=20
                  FILE_ATTRIBUTE_NORMAL=A9=A6FILE_FLAG_OVERLAPPED, =
NULL);</P>
                  <P>if (m_hIDComDev =3D=3D =
NULL)<BR>{<BR>AfxMessageBox(=A1=B0Can not=20
                  open serial port!=A1=B1);<BR>goto endd;<BR>}</P>
                  <P>memset(&amp;m_OverlappedRead, 0, sizeof=20
                  (OVERLAPPED));<BR>memset(&amp;m_OverlappedWrite, 0, =
sizeof=20
                  (OVERLAPPED));<BR>COMMTIMEOUTS=20
                  =
CommTimeOuts;<BR>CommTimeOuts.ReadIntervalTimeout=3D0=A1=C1FFFFFFFF;<BR>C=
ommTimeOuts.ReadTotalTimeoutMultiplier=20
                  =3D 0;<BR>CommTimeOuts.ReadTotalTimeoutConstant =3D=20
                  0;<BR>CommTimeOuts.WriteTotalTimeoutMultiplier =3D=20
                  0;<BR>CommTimeOuts.WriteTotalTimeoutConstant =3D=20
                  5000;<BR>SetCommTimeouts(m_hIDComDev,=20
                  &amp;CommTimeOuts);<BR>Wsprintf(szComparams, =
=A1=B0COM2:9600, n, 8,=20
                  1=A1=B1);</P>
                  <P>m_OverlappedRead. hEvent =3D CreateEvent(NULL, =
TRUE, FALSE,=20
                  NULL);<BR>m_OverlappedWrite. hEvent =3D =
CreateEvent(NULL, TRUE,=20
                  FALSE, NULL);</P>
                  <P>dcb. DCBlength =3D =
sizeof(DCB);<BR>GetCommState(m_hIDComDev,=20
                  &amp;dcb);<BR>dcb. BaudRate =3D 9600;</P>
                  <P>dcb. ByteSize=3D 8;<BR>unsigned char ucSet;</P>
                  <P>ucSet =3D (unsigned char) =
((FC_RTSCTS&amp;FC_DTRDSR) !=3D=20
                  0);<BR>ucSet =3D (unsigned char) =
((FC_RTSCTS&amp;FC_RTSCTS) ! =3D=20
                  0);<BR>ucSet =3D (unsigned char) =
((FC_RTSCTS&amp;FC_XONXOFF) ! =3D=20
                  0);</P>
                  <P>if (!SetCommState(m_hIDComDev,=20
                  =
&amp;dcb)=A1=AC<BR>!SetupComm(m_hIDComDev,10000,10000)=A1=AC<BR>m_Overlap=
pedRead.=20
                  hEvent =3D=3DNULL=A1=AC<BR>m_OverlappedWrite. hEvent=20
                  =3D=3DNULL)<BR>{<BR>DWORD dwError =3D =
GetLastError();<BR>if=20
                  (m_OverlappedRead. hEvent !=3D=20
                  NULL)<BR>CloseHandle(m_OverlappedRead. hEvent);<BR>if=20
                  (m_OverlappedWrite. hEvent !=3D=20
                  NULL)<BR>CloseHandle(m_OverlappedWrite. hEvent);</P>
                  =
<P>CloseHandle(m_hIDComDev);<BR>}<BR>endd:<BR>;<BR>}</P>
                  <P>//=B7=A2=CB=CD=CA=FD=BE=DD</P>
                  <P>void CSerialAPIView::OnSend()<BR>{<BR>char =
szMessage[20] =3D=20
                  =A1=B0thank you very much=A1=B1;</P>
                  <P>DWORD dwBytesWritten;</P>
                  <P>for (int i=3D0; i&lt;sizeof(szMessage);=20
                  i++)<BR>{<BR>WriteFile(m_hIDComDev, =
(LPSTR)&amp;szMessage[i],=20
                  1, &amp;dwBytesWritten, &amp;m_OverlappedWrite);</P>
                  <P>if (WaitForSingleObject(m_OverlapperWrite, hEvent,=20
                  1000))dwBytesWritten =3D=20
                  0;<BR>else<BR>{<BR>GentOverlappedResult(m_hIDComDev,=20
                  &amp;m_OverlappedWrite, &amp;dwBytesWritten,=20
                  FALSE);<BR>m_OverlappedWrite. Offset +=3D=20
                  dwBytesWritten;<BR>}</P>
                  <P>dwBytesWritten++;<BR>}<BR>}</P>
                  <P><B>1.2 =BD=D3=CA=D5=C0=FD=B3=CC</B></P>
                  <P>DCB ComDcb; //=C9=E8=B1=B8=BF=D8=D6=C6=BF=E9</P>
                  <P>HANDLE hCom; //global handle</P>
                  <P>hCom =3D CreateFile ("COM1",GENERIC_READ|=20
                  =
GENERIC_WRITE,0,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL);</P>
                  <P>if=20
                  =
(hCom=3D=3DINVALID_HANDLE_VALUE)<BR>{<BR>AfxMessageBox("=CE=DE=B7=A8=B4=F2=
=BF=AA=B4=AE=D0=D0=BF=DA");<BR>}<BR>else<BR>{<BR>COMMTIMEOUTS=20
                  CommTimeOuts ;<BR>SetCommMask(hCom, EV_RXCHAR )=20
                  ;<BR>SetupComm(hCom, 4096, 4096 ) ; =
/*=C9=E8=D6=C3=CA=D5=B7=A2=BB=BA=B3=E5=C7=F8 =B3=DF=B4=E7=CE=AA4K=20
                  */<BR>PurgeComm(hCom, PURGE_TXABORT| PURGE_RXABORT |=20
                  PURGE_TXCLEAR| PURGE_RXCLEAR ) ; =
//=C7=E5=CA=D5=B7=A2=BB=BA=B3=E5=C7=F8</P>
                  =
<P>//=D2=D4=CF=C2=B3=F5=CA=BC=BB=AF=BD=E1=B9=B9=B1=E4=C1=BFCommTimeOuts, =
=C9=E8=D6=C3=B3=AC=CA=B1=B2=CE=CA=FD=20
                  CommTimeOuts.ReadIntervalTimeout =3D 0=A1=C1FFFFFFFF =
;</P>
                  <P>CommTimeOuts.ReadTotalTimeoutMultiplier =3D=20
                  0;<BR>CommTimeOuts.ReadTotalTimeoutConstant =3D=20
                  4000;<BR>CommTimeOuts.WriteTotalTimeoutMultiplier =3D=20
                  0;<BR>CommTimeOuts.WriteTotalTimeoutConstant =3D=20
                  4000;<BR>SetCommTimeouts(hCom, &amp;CommTimeOuts );=20
                  =
//=C9=E8=D6=C3=B3=AC=CA=B1=B2=CE=CA=FD<BR>ComDcb.DCBlength =3D sizeof( =
DCB );<BR>GetCommState(=20
                  hCom, &amp;ComDcb ); =
//=BB=F1=C8=A1=B5=B1=C7=B0=B2=CE=CA=FD<BR>ComDcb.BaudRate =3D9600;=20
                  //=B2=A8=CC=D8=C2=CA<BR>ComDcb.ByteSize =3D 8; =
//=CA=FD=BE=DD=CE=BB<BR>ComDcb.Parity =3D 0; /*=D0=A3=D1=E9=20
                  0~4=3Dno, odd, even, mark, space =
*/<BR>SetCommState(hCom,=20
                  &amp;ComDcb ) ;</P>
                  <P>} =
//=C9=E8=D6=C3=D0=C2=B5=C4=CD=A8=D0=C5=B2=CE=CA=FD =
=BD=D3=CA=D5=BF=C9=D3=C3=B6=A8=CA=B1=C6=F7=BB=F2=CF=DF=B3=CC=B5=C8</P>
                  <P>DWORD dRead,dReadNum;</P>
                  <P>unsigned char buff [200];</P>
                  <P>dRead=3DReadFile(hCom, buff, 100, &amp;dReadNum, =
NULL);=20
                  //=BD=D3=CA=D5100=B8=F6=D7=D6=B7=FB=A3=AC</P>
                  =
<P>//dReadNum=CE=AA=CA=B5=BC=CA=BD=D3=CA=D5=D7=D6=BD=DA=CA=FD</P>
                  <P><B>2 =
=C0=FB=D3=C3=B6=CB=BF=DA=BA=AF=CA=FD=D6=B1=BD=D3=B2=D9=D7=F7</B></P>
                  =
<P>=D5=E2=D6=D6=B7=BD=CA=BD=D6=F7=D2=AA=CA=C7=B2=C9=D3=C3=C1=BD=B8=F6=B6=CB=
=BF=DA=BA=AF=CA=FD_inp(), =
_outp()=CA=B5=CF=D6=B6=D4=B4=AE=BF=DA=B5=C4=B6=C1=D0=B4=A3=AC=C6=E4=D6=D0=
=B6=C1=B6=CB=BF=DA=BA=AF=CA=FD=B5=C4=D4=AD=D0=CD=CE=AA=A3=BA</P>
                  <P>int _inp(unsigned shot port)</P>
                  =
<P>=B8=C3=BA=AF=CA=FD=B4=D3=B6=CB=BF=DA=B6=C1=C8=A1=D2=BB=B8=F6=D7=D6=BD=DA=
=A3=AC=B6=CB=BF=DA=BA=C5=CE=AA0~65535=A1=A3</P>
                  =
<P>=D0=B4=B6=CB=BF=DA=B5=C4=BA=AF=CA=FD=D4=AD=D0=CD=CE=AA=A3=BA</P>
                  <P>int _outp(unsigned shot port, int databyte)</P>
                  =
<P>=B8=C3=BA=AF=CA=FD=CF=F2=D6=B8=B6=A8=B6=CB=BF=DA=D0=B4=C8=EB=D2=BB=B8=F6=
=D7=D6=BD=DA=A1=A3</P>
                  =
<P>=A1=A1=A1=A1=B2=BB=CD=AC=B5=C4=BC=C6=CB=E3=BB=FA=B4=AE=BF=DA=B5=D8=D6=B7=
=BF=C9=C4=DC=B2=BB=D2=BB=D1=F9=A3=AC=CD=A8=B9=FD=CF=F2=B4=AE=BF=DA=B5=C4=BF=
=D8=D6=C6=BC=B0=CA=D5=B7=A2=BC=C4=B4=E6=C6=F7=BD=F8=D0=D0=B6=C1=D0=B4=A3=AC=
=BF=C9=D2=D4=CA=B5=CF=D6=C1=E9=BB=EE=B5=C4=B4=AE=BF=DA=CD=A8=D0=C5=B9=A6=C4=
=DC=A3=AC=D3=C9=D3=DA=C9=E6=BC=B0=BE=DF=CC=E5=B5=C4=D3=B2=20
                  =
<BR>=BC=FE=B5=E7=C2=B7=CC=D6=C2=DB=B1=C8=BD=CF=B8=B4=D4=D3=A3=AC=D4=DA=B4=
=CB=B2=BB=BC=D3=D7=B8=CA=F6=A1=A3</P>
                  <P><B>3 MSComm=BF=D8=BC=FE</B></P>
                  =
<P>=A1=A1=A1=A1MSComm=BF=D8=BC=FE=CA=C7=CE=A2=C8=ED=BF=AA=B7=A2=B5=C4=D7=A8=
=D3=C3=CD=A8=D0=C5=BF=D8=BC=FE=A3=AC=B7=E2=D7=B0=C1=CB=B4=AE=BF=DA=B5=C4=CB=
=F9=D3=D0=B9=A6=C4=DC=A3=AC=CA=B9=D3=C3=BA=DC=B7=BD=B1=E3=A3=AC=B5=AB=D4=DA=
=CA=B5=BC=CA=D3=A6=D3=C3=D6=D0=D2=AA=D0=A1=D0=C4=B6=D4=C6=E4=CA=F4=D0=D4=BD=
=F8=D0=D0=C5=E4=D6=C3=A1=A3=CF=C2=C3=E6=CF=EA<BR>=CF=B8=CB=B5=C3=F7=B8=C3=
=C0=E0=D3=A6=D3=C3=B7=BD=B7=A8=A1=A3</P>
                  <P><B>3.1 MSComm=BF=D8=BC=FE=B5=C4=CA=F4=D0=D4</B></P>
                  =
<P>CommPort=A3=BA=C9=E8=D6=C3=B4=AE=BF=DA=BA=C5=A3=AC=C0=E0=D0=CD short =
:1-comm1=20
                  =
2-comm2.<BR>Settings=A3=BA=C9=E8=D6=C3=B4=AE=BF=DA=CD=A8=D0=C5=B2=CE=CA=FD=
=A3=AC=C0=E0=D0=CD CString=20
                  =
:B=B2=A8=CC=D8=C2=CA=A3=ACP=C6=E6=C5=BC=D0=D4=A3=A8N=CE=DE=D0=A3=D1=E9=A3=
=ACE=C5=BC=D0=A3=D1=E9=A3=ACO=C6=E6=D0=A3=D1=E9=A3=A9=A3=ACD=D7=D6=BD=DA=D3=
=D0=D0=A7=CE=BB=CA=FD=A3=ACS=CD=A3=D6=B9=CE=BB=A1=A3<BR>PortOpen=A3=BA=C9=
=E8=D6=C3=BB=F2=B7=B5=BB=D8=B4=AE=BF=DA=D7=B4=CC=AC=A3=AC=C0=E0=D0=CD=20
                  =
BOOL=A3=BATURE=B4=F2=BF=AA=A3=ACFALSE=B9=D8=B1=D5=A1=A3<BR>InputMode:=C9=E8=
=D6=C3=B4=D3=BD=D3=CA=D5=BB=BA=B3=E5=C7=F8=B6=C1=C8=A1=CA=FD=BE=DD=B5=C4=B8=
=F1=CA=BD=A3=AC=C0=E0=D0=CD long=A3=BA=20
                  0-Text =
1-Bin=A1=A3<BR>Input:=B4=D3=BD=D3=CA=D5=BB=BA=B3=E5=C7=F8=B6=C1=C8=A1=CA=FD=
=BE=DD=A3=AC=C0=E0=D0=CD=20
                  =
VARIANT=A1=A3<BR>InBufferCount:=BD=D3=CA=D5=BB=BA=B3=E5=C7=F8=D6=D0=B5=C4=
=D7=D6=BD=DA=CA=FD=A3=AC=C0=E0=D0=CD=A3=BAshort=A1=A3<BR>InBufferSize:=BD=
=D3=CA=D5=BB=BA=B3=E5=C7=F8=B5=C4=B4=F3=D0=A1=A3=AC=C0=E0=D0=CD=A3=BAshor=
t=A1=A3<BR>Output:=CF=F2=B7=A2=CB=CD=BB=BA=B3=E5=C7=F8=D0=B4=C8=EB=CA=FD=BE=
=DD=A3=AC=C0=E0=D0=CD=A3=BAVARIANT=A1=A3<BR>OutBufferCount:=B7=A2=CB=CD=BB=
=BA=B3=E5=C7=F8=D6=D0=B5=C4=D7=D6=BD=DA=CA=FD=A3=AC=C0=E0=D0=CD=A3=BAshor=
t=A1=A3<BR>OutBufferSize:=B7=A2=CB=CD=BB=BA=B3=E5=C7=F8=B5=C4=B4=F3=D0=A1=
=A3=AC=C0=E0=D0=CD=A3=BAshort=A1=A3<BR>InputLen:=C9=E8=D6=C3=BB=F2=B7=B5=BB=
=D8Input=B6=C1=B3=F6=B5=C4=D7=D6=BD=DA=CA=FD=A3=AC=C0=E0=D0=CD=A3=BAshort=
=A1=A3<BR>CommEvent:=B4=AE=BF=DA=CA=C2=BC=FE=A3=AC=C0=E0=D0=CD=A3=BAshort=
=A1=A3</P>
                  <P><B>3.2 =B3=CC=D0=F2=CA=BE=C0=FD</B></P>
                  <P>=B4=AE=BF=DA=B3=F5=CA=BC=BB=AF</P>
                  <P>if (!m_comm.GetPortOpen())m_comm.SetPortOpen(TURE); =

                  /*=B4=F2=BF=AA=B4=AE=BF=DA*/</P>
                  <P>m_comm.SetSettings("4800,n,8,1");=20
                  =
/*=B4=AE=BF=DA=B2=CE=CA=FD=C9=E8=D6=C3*/<BR>m_comm.SetInputMode(0);=20