csdn技术中心 实战deviceiocontrol 之六：访问物理端口.mht

DeviceIOControl实战演示及源代码

    SC_HANDLE hSCManager;        <SPAN class=3Drem>// =
=B7=FE=CE=F1=BF=D8=D6=C6=B9=DC=C0=ED=C6=F7=BE=E4=B1=FA</SPAN>
    SC_HANDLE hService;          <SPAN class=3Drem>// =
=B7=FE=CE=F1=BE=E4=B1=FA</SPAN>
    BOOL bResult;                <SPAN class=3Drem>// =
=B7=B5=BB=D8=D6=B5</SPAN>
    SERVICE_STATUS ServiceStatus;
 =20
    bResult =3D FALSE;
 =20
    <SPAN class=3Drem>// =
=B4=F2=BF=AA=B7=FE=CE=F1=BF=D8=D6=C6=B9=DC=C0=ED=C6=F7</SPAN>
    hSCManager =3D OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
 =20
    <SPAN class=3Dkey>if</SPAN> (hSCManager)
    {
        <SPAN class=3Drem>// =B4=F2=BF=AA=B7=FE=CE=F1</SPAN>
        hService =3D OpenService(hSCManager, lpszServiceName, =
SERVICE_ALL_ACCESS);
 =20
        <SPAN class=3Dkey>if</SPAN> (hService)
        {
            <SPAN class=3Drem>// =CD=A3=D6=B9=B7=FE=CE=F1</SPAN>
            bResult =3D ControlService(hService, SERVICE_CONTROL_STOP, =
&amp;ServiceStatus);
 =20
            <SPAN class=3Drem>// =C9=BE=B3=FD=B7=FE=CE=F1</SPAN>
            bResult =3D bResult &amp;&amp; DeleteService(hService);
 =20
            <SPAN class=3Drem>// =
=B9=D8=B1=D5=B7=FE=CE=F1=BE=E4=B1=FA</SPAN>
            CloseServiceHandle(hService);
        }
 =20
        <SPAN class=3Drem>// =
=B9=D8=B1=D5=B7=FE=CE=F1=BF=D8=D6=C6=B9=DC=C0=ED=C6=F7=BE=E4=B1=FA</SPAN>=

        CloseServiceHandle(hSCManager);
    }
 =20
    <SPAN class=3Dkey>return</SPAN> bResult;
}
</CODE></PRE>
            <P =
class=3Dbhw98>=D3=A6=D3=C3=B3=CC=D0=F2=CA=B5=CF=D6=B6=CB=BF=DAI/O=B5=C4=BD=
=D3=BF=DA=C8=E7=CF=C2=A3=BA <PRE class=3Dbhw98><CODE class=3Dbhw98><SPAN =
class=3Drem>// =C8=AB=BE=D6=B5=C4=C9=E8=B1=B8=BE=E4=B1=FA</SPAN>
HANDLE hMyPort;
 =20
<SPAN class=3Drem>// =B4=F2=BF=AA=C9=E8=B1=B8</SPAN>
<SPAN class=3Drem>// lpszDevicePath: =
=C9=E8=B1=B8=B5=C4=C2=B7=BE=B6</SPAN>
HANDLE OpenDevice(LPCTSTR lpszDevicePath)
{
    HANDLE hDevice;
 =20
    <SPAN class=3Drem>// =B4=F2=BF=AA=C9=E8=B1=B8</SPAN>
    hDevice =3D ::CreateFile(lpszDevicePath,    <SPAN class=3Drem>// =
=C9=E8=B1=B8=C2=B7=BE=B6</SPAN>
        GENERIC_READ | GENERIC_WRITE,        <SPAN class=3Drem>// =
=B6=C1=D0=B4=B7=BD=CA=BD</SPAN>
        FILE_SHARE_READ | FILE_SHARE_WRITE,  <SPAN class=3Drem>// =
=B9=B2=CF=ED=B7=BD=CA=BD</SPAN>
        NULL,                    <SPAN class=3Drem>// =
=C4=AC=C8=CF=B5=C4=B0=B2=C8=AB=C3=E8=CA=F6=B7=FB</SPAN>
        OPEN_EXISTING,           <SPAN class=3Drem>// =
=B4=B4=BD=A8=B7=BD=CA=BD</SPAN>
        <SPAN class=3Dnum>0</SPAN>,                       <SPAN =
class=3Drem>// =B2=BB=D0=E8=C9=E8=D6=C3=CE=C4=BC=FE=CA=F4=D0=D4</SPAN>
        NULL);                   <SPAN class=3Drem>// =
=B2=BB=D0=E8=B2=CE=D5=D5=C4=A3=B0=E5=CE=C4=BC=FE</SPAN>
 =20
    <SPAN class=3Dkey>return</SPAN> hDevice;
}
 =20
<SPAN class=3Drem>// =B4=F2=BF=AA=B6=CB=BF=DA=C7=FD=B6=AF</SPAN>
BOOL OpenMyPort()
{
    BOOL bResult;
 =20
    <SPAN class=3Drem>// =
=C9=E8=B1=B8=C3=FB=CE=AA"MyPort"=A3=AC=C7=FD=B6=AF=B3=CC=D0=F2=CE=BB=D3=DA=
Windows=B5=C4"system32\drivers"=C4=BF=C2=BC=D6=D0</SPAN>
    bResult =3D StartDriver(<SPAN =
class=3Dstr>"system32\\drivers\\MyPort.sys"</SPAN>, <SPAN =
class=3Dstr>"MyPort"</SPAN>);
 =20
    <SPAN class=3Drem>// =
=C9=E8=B1=B8=C2=B7=BE=B6=CE=AA"\\.\MyPort"</SPAN>
    <SPAN class=3Dkey>if</SPAN> (bResult)
    {
        hMyPort =3D OpenDevice(<SPAN =
class=3Dstr>"\\\\.\\MyPort"</SPAN>);
    }
 =20
    <SPAN class=3Dkey>return</SPAN> (bResult &amp;&amp; (hMyPort !=3D =
INVALID_HANDLE_VALUE));
}
 =20
<SPAN class=3Drem>// =B9=D8=B1=D5=B6=CB=BF=DA=C7=FD=B6=AF</SPAN>
BOOL CloseMyPort()
{
    <SPAN class=3Dkey>return</SPAN> (CloseHandle(hMyPort) &amp;&amp; =
StopDriver(<SPAN class=3Dstr>"MyPort"</SPAN>));
}
 =20
<SPAN class=3Drem>// =
=B4=D3=D6=B8=B6=A8=B6=CB=BF=DA=B6=C1=D2=BB=B8=F6=D7=D6=BD=DA</SPAN>
<SPAN class=3Drem>// port: =B6=CB=BF=DA</SPAN>
BYTE ReadPortByte(WORD port)
{
    DWORD buf[<SPAN class=3Dnum>2</SPAN>];            <SPAN =
class=3Drem>// =CA=E4=C8=EB=CA=E4=B3=F6=BB=BA=B3=E5=C7=F8            =
</SPAN>
    DWORD dwOutBytes;        <SPAN class=3Drem>// =
IOCTL=CA=E4=B3=F6=CA=FD=BE=DD=B3=A4=B6=C8</SPAN>
 =20
    buf[<SPAN class=3Dnum>0</SPAN>] =3D port;           <SPAN =
class=3Drem>// =B5=DA=D2=BB=B8=F6DWORD=CA=C7=B6=CB=BF=DA</SPAN>
<SPAN class=3Drem>//  buf[1] =3D 0;              // =
=B5=DA=B6=FE=B8=F6DWORD=CA=C7=CA=FD=BE=DD</SPAN>
 =20
    <SPAN class=3Drem>// =
=D3=C3IOCTL_MYPORT_READ_BYTE=B6=C1=B6=CB=BF=DA</SPAN>
    ::DeviceIoControl(hMyPort,   <SPAN class=3Drem>// =
=C9=E8=B1=B8=BE=E4=B1=FA</SPAN>
        IOCTL_MYPORT_READ_BYTE,  <SPAN class=3Drem>// =
=C8=A1=C9=E8=B1=B8=CA=F4=D0=D4=D0=C5=CF=A2</SPAN>
        buf, <SPAN class=3Dkey>sizeof</SPAN>(buf),        <SPAN =
class=3Drem>// =CA=E4=C8=EB=CA=FD=BE=DD=BB=BA=B3=E5=C7=F8</SPAN>
        buf, <SPAN class=3Dkey>sizeof</SPAN>(buf),        <SPAN =
class=3Drem>// =CA=E4=B3=F6=CA=FD=BE=DD=BB=BA=B3=E5=C7=F8</SPAN>
        &amp;dwOutBytes,             <SPAN class=3Drem>// =
=CA=E4=B3=F6=CA=FD=BE=DD=B3=A4=B6=C8</SPAN>
        (LPOVERLAPPED)NULL);     <SPAN class=3Drem>// =
=D3=C3=CD=AC=B2=BDI/O    </SPAN>
 =20
    <SPAN class=3Dkey>return</SPAN> (BYTE)buf[<SPAN =
class=3Dnum>1</SPAN>];
}
<SPAN class=3Drem>// =
=BD=AB=D2=BB=B8=F6=D7=D6=BD=DA=D0=B4=B5=BD=D6=B8=B6=A8=B6=CB=BF=DA</SPAN>=

<SPAN class=3Drem>// port: =B6=CB=BF=DA</SPAN>
<SPAN class=3Drem>// data: =D7=D6=BD=DA=CA=FD=BE=DD</SPAN>
<SPAN class=3Dkey>void</SPAN> WritePortByte(WORD port, BYTE data)
{
    DWORD buf[<SPAN class=3Dnum>2</SPAN>];            <SPAN =
class=3Drem>// =CA=E4=C8=EB=CA=E4=B3=F6=BB=BA=B3=E5=C7=F8            =
</SPAN>
    DWORD dwOutBytes;        <SPAN class=3Drem>// =
IOCTL=CA=E4=B3=F6=CA=FD=BE=DD=B3=A4=B6=C8</SPAN>
 =20
    buf[<SPAN class=3Dnum>0</SPAN>] =3D port;           <SPAN =
class=3Drem>// =B5=DA=D2=BB=B8=F6DWORD=CA=C7=B6=CB=BF=DA</SPAN>
    buf[<SPAN class=3Dnum>1</SPAN>] =3D data;           <SPAN =
class=3Drem>// =B5=DA=B6=FE=B8=F6DWORD=CA=C7=CA=FD=BE=DD</SPAN>
 =20
    <SPAN class=3Drem>// =
=D3=C3IOCTL_MYPORT_WRITE_BYTE=D0=B4=B6=CB=BF=DA</SPAN>
    ::DeviceIoControl(hMyPort,   <SPAN class=3Drem>// =
=C9=E8=B1=B8=BE=E4=B1=FA</SPAN>
        IOCTL_MYPORT_WRITE_BYTE, <SPAN class=3Drem>// =
=C8=A1=C9=E8=B1=B8=CA=F4=D0=D4=D0=C5=CF=A2</SPAN>
        buf, <SPAN class=3Dkey>sizeof</SPAN>(buf),        <SPAN =
class=3Drem>// =CA=E4=C8=EB=CA=FD=BE=DD=BB=BA=B3=E5=C7=F8</SPAN>
        buf, <SPAN class=3Dkey>sizeof</SPAN>(buf),        <SPAN =
class=3Drem>// =CA=E4=B3=F6=CA=FD=BE=DD=BB=BA=B3=E5=C7=F8</SPAN>
        &amp;dwOutBytes,             <SPAN class=3Drem>// =
=CA=E4=B3=F6=CA=FD=BE=DD=B3=A4=B6=C8</SPAN>
        (LPOVERLAPPED)NULL);     <SPAN class=3Drem>// =
=D3=C3=CD=AC=B2=BDI/O</SPAN>
}
</CODE></PRE>
            <P=20
            =
class=3Dbhw98>=D3=D0=C1=CBReadPortByte=BA=CDWritePortByte=D5=E2=C1=BD=B8=F6=
=BA=AF=CA=FD=A3=AC=CE=D2=C3=C7=BE=CD=C4=DC=BA=DC=C8=DD=D2=D7=B5=D8=B2=D9=D7=
=DDCMOS=BA=CDspeaker=C1=CB(=B9=D8=D3=DACMOS=D6=B5=B5=C4=BA=AC=D2=E5=D2=D4=
=BC=B0=B6=A8=CA=B1=C6=F7=BC=C4=B4=E6=C6=F7=B6=A8=D2=E5=A3=AC=C7=EB=B2=CE=BF=
=BC=CF=E0=D3=A6=B5=C4=D3=B2=BC=FE=D7=CA=C1=CF)=A3=BA=20
<PRE class=3Dbhw98><CODE class=3Dbhw98><SPAN class=3Drem>// =
0x70=CA=C7CMOS=CB=F7=D2=FD=B6=CB=BF=DA(=D6=BB=D0=B4)</SPAN>
<SPAN class=3Drem>// 0x71=CA=C7CMOS=CA=FD=BE=DD=B6=CB=BF=DA</SPAN>
BYTE ReadCmos(BYTE index)
{
    BYTE data;
 =20
    ::WritePortByte(<SPAN class=3Dnum>0x70</SPAN>, index);
 =20
    data =3D ::ReadPortByte(<SPAN class=3Dnum>0x71</SPAN>);
 =20
    <SPAN class=3Dkey>return</SPAN> data;
}
 =20
<SPAN class=3Drem>// 0x61=CA=C7speaker=BF=D8=D6=C6=B6=CB=BF=DA</SPAN>
<SPAN class=3Drem>// =
0x43=CA=C78253/8254=B6=A8=CA=B1=C6=F7=BF=D8=D6=C6=B6=CB=BF=DA</SPAN>
<SPAN class=3Drem>// =
0x42=CA=C78253/8254=B6=A8=CA=B1=C6=F7=CD=A8=B5=C02=B5=C4=B6=CB=BF=DA</SPA=
N>
<SPAN class=3Dkey>void</SPAN> Sound(DWORD freq)
{
    BYTE data;
    <SPAN class=3Dkey>if</SPAN> ((freq &gt;=3D <SPAN =
class=3Dnum>20</SPAN>) &amp;&amp; (freq &lt;=3D <SPAN =
class=3Dnum>20000</SPAN>))
    {
        freq =3D <SPAN class=3Dnum>1193181</SPAN> / freq;
 =20
        data =3D ::ReadPortByte(<SPAN class=3Dnum>0x61</SPAN>);
 =20
        <SPAN class=3Dkey>if</SPAN> ((data &amp; <SPAN =
class=3Dnum>3</SPAN>) =3D=3D <SPAN class=3Dnum>0</SPAN>)
        {
            ::WritePortByte(<SPAN class=3Dnum>0x61</SPAN>, data | <SPAN =
class=3Dnum>3</SPAN>);
            ::WritePortByte(<SPAN class=3Dnum>0x43</SPAN>, <SPAN =
class=3Dnum>0xb6</SPAN>);
        }
 =20
        ::WritePortByte(<SPAN class=3Dnum>0x42</SPAN>, (BYTE)(freq % =
<SPAN class=3Dnum>256</SPAN>));
        ::WritePortByte(<SPAN class=3Dnum>0x42</SPAN>, (BYTE)(freq / =
<SPAN class=3Dnum>256</SPAN>));
    }
}
 =20
<SPAN class=3Dkey>void</SPAN> NoSound(<SPAN class=3Dkey>void</SPAN>)
{
    BYTE data;
    data =3D ::ReadPortByte(<SPAN class=3Dnum>0x61</SPAN>);
    ::WritePortByte(<SPAN class=3Dnum>0x61</SPAN>, data &amp; <SPAN =
class=3Dnum>0xfc</SPAN>);
}
</CODE></PRE><PRE class=3Dbhw98><CODE class=3Dbhw98>
    <SPAN class=3Drem>// =D2=D4=CF=C2=B6=C1=B3=F6CMOS =
128=B8=F6=D7=D6=BD=DA</SPAN>
    <SPAN class=3Dkey>for</SPAN> (<SPAN class=3Dkey>int</SPAN> i =3D =
<SPAN class=3Dnum>0</SPAN>; i &lt; <SPAN class=3Dnum>128</SPAN>; i++)
    {
        BYTE data =3D ::ReadCmos(i);
        ... ...
    }

    <SPAN class=3Drem>// =
=D2=D4=CF=C2=D3=C3C=B5=F7=D1=DD=D7=E0=A1=B0=B6=E0-=C0=B4-=C3=D7=A1=B1</SP=
AN>
 =20
    <SPAN class=3Drem>// 1 =3D 262 Hz</SPAN>
    ::Sound(<SPAN class=3Dnum>262</SPAN>);
    ::Sleep(<SPAN class=3Dnum>200</SPAN>);
    ::NoSound();
 =20
    <SPAN class=3Drem>// 2 =3D 288 Hz</SPAN>
    ::Sound(<SPAN class=3Dnum>288</SPAN>);
    ::Sleep(<SPAN class=3Dnum>200</SPAN>);
    ::NoSound();
 =20
    <SPAN class=3Drem>// 3 =3D 320 Hz</SPAN>
    ::Sound(<SPAN class=3Dnum>320</SPAN>);
    ::Sleep(<SPAN class=3Dnum>200</SPAN>);
    ::NoSound();
</CODE></PRE>
            <P class=3Dbhw98><STRONG class=3Dbhw98>Q</STRONG>=20
            =
=BE=CD=CA=C7=B8=F6=BC=F2=B5=A5=B5=C4=B6=CB=BF=DAI/O=A3=AC=D5=E2=C3=B4=C2=E9=
=B7=B3=B2=C5=C4=DC=CA=B5=CF=D6=A3=AC=B8=E3=B5=C3=B0=B3=CD=B7=C4=D4=CF=A1=BB=
=E8=A3=AC=D3=D0=C3=BB=D3=D0=BC=F2=BD=E0=C3=F7=C1=CB=B5=C4=B0=EC=B7=A8=B0=A1=
=A3=BF=20
            <P class=3Dbhw98><STRONG class=3Dbhw98>A</STRONG>=20
            =
=C9=CF=C3=E6=B5=C4=C0=FD=D7=D3=A3=AC=D6=AE=CB=F9=D2=D4=B4=D3=B1=E0=D0=B4=C7=
=FD=B6=AF=B3=CC=D0=F2=A3=AC=B5=BD=B0=B2=D7=B0=C7=FD=B6=AF=A3=AC=B5=BD=C6=F4=
=B6=AF=B7=FE=CE=F1=A3=AC=B5=BD=B4=F2=BF=AA=C9=E8=B1=B8=A3=AC=B5=BD=B7=C3=CE=
=CA=C9=E8=B1=B8=A3=AC=D2=BB=D6=B1=B5=BD=B6=C1=D0=B4=B6=CB=BF=DA=A3=AC=D5=E2=
=D1=F9=D2=BB=C2=B7=CF=C2=C0=B4=A3=AC=CA=C7=CE=AA=C1=CB=BD=D2=CA=BE=D4=DAN=
T/2000/XP=D6=D0=D3=B2=BC=FE=B7=C3=CE=CA=BC=BC=CA=F5=B5=C4=B1=BE=D6=CA=A1=A3=
=BC=D9=C8=E7=BD=AB=CB=F9=D3=D0=B9=FD=B3=CC=B7=E2=D7=B0=C6=F0=C0=B4=A3=AC=D6=
=BB=CC=E1=B9=A9OpenMyPort,=20
            CloseMyPort, ReadPortByte,=20
            =
WritePortByte=C9=F5=D6=C1=B8=FC=B8=DF=B2=E3=B5=C4ReadCmos=A1=A2WriteCmos=A1=
=A2Sound=A1=A2NoSound=B8=F8=C4=E3=B5=F7=D3=C3=A3=AC=CA=C7=B2=BB=CA=C7=BB=E1=
=B8=D0=BE=F5=C7=E5=CB=AC=D0=ED=B6=E0=A3=BF=20
            <P=20
            =
class=3Dbhw98>=CA=B5=BC=CA=C9=CF=A3=AC=CE=D2=C3=C7=C6=BD=B3=A3=D7=F6=B5=C4=
=BB=F9=D3=DA=D2=BB=B6=A8=D3=B2=BC=FE=B5=C4=B6=FE=B4=CE=BF=AA=B7=A2=A3=AC=D2=
=BB=B0=E3=BB=E1=CF=C8=B0=B2=D7=B0=C7=FD=B6=AF=B3=CC=D0=F2(DRV)=BA=CD=D3=C3=
=BB=A7=BD=D3=BF=DA=B5=C4=D4=CB=D0=D0=BF=E2(DLL)=A3=AC=C8=BB=BA=F3=D4=DA=B4=
=CB=BB=F9=B4=A1=C9=CF=BF=AA=B7=A2=B3=F6=CE=D2=C3=C7=B5=C4=D3=A6=D3=C3=B3=CC=
=D0=F2(APP)=A1=A3DRV=A1=A2DLL=A1=A2APP=C8=FD=D5=DF=B7=D6=B1=F0=D4=CB=D0=D0=
=D4=DA=BA=CB=D0=C4=CC=AC=A1=A2=BA=CB=D0=C4=CC=AC/=D3=C3=BB=A7=CC=AC=C1=AA=
=C2=E7=B4=F8=A1=A2=D3=C3=BB=A7=CC=AC=A1=A3=B1=C8=C8=E7=C2=F2=C1=CB=D2=BB=BF=
=E9=CD=BC=CF=F3=B2=C9=BC=AF=BF=A8=A3=AC=D2=AA=CF=C8=B0=B2=D7=B0=BA=CB=D0=C4=
=C7=FD=B6=AF=A3=AC=CB=FC=B5=C4=A1=B0Development=20
            Tool =
Kit=A1=B1=A3=AC=CC=E1=B9=A9=C0=E0=CB=C6=D3=DAPCV_Initialize,=20
            =
PCV_Capture=B5=C8=B5=C4API=A3=AC=BE=CD=CA=C7=B0=E7=D1=DD=BA=CB=D0=C4=CC=AC=
=BA=CD=D3=C3=BB=A7=CC=AC=C1=AA=C2=E7=D4=B1=B5=C4=BD=C7=C9=AB=A1=A3=CE=D2=C3=
=C7=B8=F9=B1=BE=B2=BB=D0=E8=D2=AACreateFile=A1=A2CloseHandle=A1=A2=20
            =
DeviceIOControl=A1=A2ReadFile=A1=A2WriteFile=B5=C8=BD=CF=B5=CD=B2=E3=B4=CE=
=B5=C4=D6=B1=BD=D3=B5=F7=D3=C3=A1=A3=20
            <P class=3Dbhw98>Yariv=20
            =
Kaplan=D0=B4=B9=FD=D2=BB=B8=F6WinIO=B5=C4=C0=FD=D7=D3=A3=AC=C4=DC=CA=B5=CF=
=D6=B6=D4=CE=EF=C0=ED=B6=CB=BF=DA=BA=CD=C4=DA=B4=E6=B5=C4=B7=C3=CE=CA=A3=AC=
=CC=E1=B9=A9=C1=CBDRV=A1=A2DLL=A1=A2APP=C8=FD=B7=BD=C3=E6=B5=C4=D4=B4=C2=EB=
=A3=AC=D3=D0=D0=CB=C8=A4=B5=C4=BB=B0=BF=C9=D2=D4=C9=EE=C8=EB=D1=D0=BE=BF=D2=
=BB=CF=C2=A1=A3=20

            <H2 class=3Dbhw98>[=CF=E0=B9=D8=D7=CA=D4=B4]</H2>
            <LI =
class=3Dbhw98>=B1=BE=CE=C4=C7=FD=B6=AF=B3=CC=D0=F2=D4=B4=C2=EB=A3=BA<A=20