windows-nt/Source/XPSP1/NT/net/unimodem/sample/fakemodem.htm

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<title>UNIMODEM sample controller-less modem driver (fakemodem)</title>
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<div class=Section1>
<h2><span style='font-family:Verdana'>UNIMODEM sample controller-less modem
driver (Fakemodem)<o:p></o:p></span></h2>
<p><span style='font-size:10.0pt;font-family:Arial;color:red'>[This is
preliminary documentation and subject to change.]</span><span style='font-size:
10.0pt;font-family:Verdana'><o:p></o:p></span></p>
<h3 style='tab-stops:120.0pt'><span style='font-family:Verdana'>SUMMARY<span
style='mso-tab-count:1'><3E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> </span><o:p></o:p></span></h3>
<p><span style='font-size:10.0pt;font-family:Verdana'>This sample demonstrates
a simple controller-less modem driver. This driver supports sending and
receiving AT commands using the ReadFile/WriteFile calls or via a TAPI
interface using an application such as HyperTerminal.<o:p></o:p></span></p>
<p><span style='font-size:10.0pt;font-family:Verdana'>The sample works on
Windows 2000, 32-bit and 64-bit platforms, and Windows XP. Both checked
and free builds are available.<o:p></o:p></span></p>
<h3><span style='font-family:Verdana'>BUILDING THE SAMPLE<o:p></o:p></span></h3>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:Verdana'>From the
Free or Checked Build environment, execute <b>build</b> in the sample\sys
directory. <o:p></o:p></span></p>
<h3><span style='font-family:Verdana'>INSTALLATION<o:p></o:p></span></h3>
<p><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Verdana'>The
driver is installed using the INF file mdmfake.inf, which is provided in the
sample\inf directory. <span style="mso-spacerun: yes"><EFBFBD></span><o:p></o:p></span></p>
<p><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Verdana'>To
install this driver, a PCI enumeration event must first take place. <span
style="mso-spacerun: yes"><3E></span>Mdmfake.inf has been pre-configured with the
device ID <b>PCI\VEN_9999&amp;DEV_9999</b>.<b><o:p></o:p></b></span></p>
<p><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Verdana'>In
the Phone and Modem Options CPL:<o:p></o:p></span></p>
<p style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo2;
tab-stops:list .5in'><![if !supportLists]><span style='font-size:10.0pt;
mso-bidi-font-size:12.0pt;font-family:Verdana'>1.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'>Click <b>Modems</b> to view the list of modems installed.<o:p></o:p></span></p>
<p style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo2;
tab-stops:list .5in'><![if !supportLists]><span style='font-size:10.0pt;
mso-bidi-font-size:12.0pt;font-family:Verdana'>2.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'>Click <b>Add</b> then <b>Next</b><o:p></o:p></span></p>
<p style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo2;
tab-stops:list .5in'><![if !supportLists]><span style='font-size:10.0pt;
mso-bidi-font-size:12.0pt;font-family:Verdana'>3.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'>The PCI device will then enumerate a <b>PCI Simple
Communications Controller</b>.<o:p></o:p></span></p>
<p style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo2;
tab-stops:list .5in'><![if !supportLists]><span style='font-size:10.0pt;
mso-bidi-font-size:12.0pt;font-family:Verdana'>4.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'>At the found new hardware wizard, select <b>Install from a
list or specific location (Advanced)</b>.<o:p></o:p></span></p>
<p style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo2;
tab-stops:list .5in'><![if !supportLists]><span style='font-size:10.0pt;
mso-bidi-font-size:12.0pt;font-family:Verdana'>5.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'>Uncheck <b>Search removable media (floppy, CD-ROM<4F>)</b><o:p></o:p></span></p>
<p style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo2;
tab-stops:list .5in'><![if !supportLists]><span style='font-size:10.0pt;
mso-bidi-font-size:12.0pt;font-family:Verdana'>6.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'>Check <b>Include this location in the search:</b><o:p></o:p></span></p>
<p style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo2;
tab-stops:list .5in'><![if !supportLists]><span style='font-size:10.0pt;
mso-bidi-font-size:12.0pt;font-family:Verdana'>7.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'>In the directory pull down list, enter the location of the
driver.<o:p></o:p></span></p>
<p style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo2;
tab-stops:list .5in'><![if !supportLists]><span style='font-size:10.0pt;
mso-bidi-font-size:12.0pt;font-family:Verdana'>8.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;
font-family:Verdana'>Click <b>Next</b>.<o:p></o:p></span></p>
<p><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Verdana'>Note
that if you get a warning dialog with regards to Windows Logo, or unsigned
drivers, testing then click on <b>continue</b>.<o:p></o:p></span></p>
<h3><span style='font-family:Verdana'>USAGE<o:p></o:p></span></h3>
<p><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Verdana'>Once
installed, you can talk to the fakemodem driver through HyperTerminal, or via
ReadFile/WriteFile calls.<span style="mso-spacerun: yes"><EFBFBD> </span>The AT
command set supported by fakemodem includes:<o:p></o:p></span></p>
<p><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Verdana'><span
style='mso-tab-count:1'><3E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> </span><b>AT</b><span style='mso-tab-count:
3'><3E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> </span>returns <b>OK</b><br>
<br>
<span style='mso-tab-count:1'><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> </span><b>ATA</b><span
style='mso-tab-count:3'><3E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> </span>returns <b>CONNECT<o:p></o:p></b></span></p>
<p><b><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Verdana'><span
style='mso-tab-count:1'><3E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> </span>ATD</span></b><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Verdana'>&lt;number&gt;<span
style='mso-tab-count:2'><3E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> </span>returns <b>CONNECT</b><o:p></o:p></span></p>
<h3 style='tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><span
style='font-family:Verdana'>TIPS<o:p></o:p></span></h3>
<p class=MsoNormal style='tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><span
style='font-size:10.0pt;font-family:Verdana'>With a checked version of
fakemodem.sys, you can control the volume of debug information generated by
changing the registry variable DebugFlags. Refer to fakemodem.h for more
information.<o:p></o:p></span></p>
<h3 style='tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><span
style='font-family:Verdana'>CODE TOUR<o:p></o:p></span></h3>
<h4 style='tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><span
style='font-family:Verdana'>File Manifest<o:p></o:p></span></h4>
<pre><b><span style='font-size:9.0pt;mso-bidi-font-size:7.5pt;font-family:Courier'>Directory: Inf</span></b><span
style='font-size:9.0pt;mso-bidi-font-size:7.5pt;font-family:Courier'><o:p></o:p></span></pre><pre><span
style='font-size:9.0pt;mso-bidi-font-size:7.5pt;font-family:Courier'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></pre><pre><u><span
style='font-size:9.0pt;mso-bidi-font-size:7.5pt;font-family:Courier'>File</span></u><span
style='font-size:9.0pt;mso-bidi-font-size:7.5pt;font-family:Courier'><span
style='mso-tab-count:2'><3E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> </span><u>Description<o:p></o:p></u></span></pre><pre><b><span
style='font-size:9.0pt;mso-bidi-font-size:7.5pt;font-family:Courier'>mdmfake.inf</span></b><span
style='font-size:9.0pt;mso-bidi-font-size:7.5pt;font-family:Courier'><span
style='mso-tab-count:1'><3E><><EFBFBD><EFBFBD><EFBFBD> </span>INF file for installing the fakemodem driver<o:p></o:p></span></pre><pre><span
style='font-size:9.0pt;mso-bidi-font-size:7.5pt;font-family:Courier'><span
style='mso-tab-count:1'><3E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> </span><o:p></o:p></span></pre><pre><b><span
style='font-size:9.0pt;mso-bidi-font-size:7.5pt;font-family:Courier'>Directory: Sys</span></b><span
style='font-size:9.0pt;mso-bidi-font-size:7.5pt;font-family:Courier'><br
style='mso-special-character:line-break'>
<![if !supportLineBreakNewLine]><br style='mso-special-character:line-break'>
<![endif]><o:p></o:p></span></pre><pre><span style='font-size:9.0pt;mso-bidi-font-size:
7.5pt;font-family:Courier'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></pre><pre><span
style='font-size:9.0pt;mso-bidi-font-size:7.5pt;font-family:Courier'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></pre><pre><u><span
style='font-size:9.0pt;mso-bidi-font-size:7.5pt;font-family:Courier'>File</span></u><span
style='font-size:9.0pt;mso-bidi-font-size:7.5pt;font-family:Courier'><span
style='mso-tab-count:2'><3E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> </span><u>Description<o:p></o:p></u></span></pre><pre><b><span
style='font-size:9.0pt;mso-bidi-font-size:7.5pt;font-family:Courier'>init.c</span></b><span
style='font-size:9.0pt;mso-bidi-font-size:7.5pt;font-family:Courier'><span
style='mso-tab-count:2'><3E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> </span>Fakemodem driver initialization entry points<o:p></o:p></span></pre><pre><b><span
style='font-size:9.0pt;mso-bidi-font-size:7.5pt;font-family:Courier'>readwrit.c</span></b><span
style='font-size:9.0pt;mso-bidi-font-size:7.5pt;font-family:Courier'><span
style='mso-tab-count:1'><3E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> </span>Routines for receiving and sending text. This includes processing AT commands.<o:p></o:p></span></pre><pre><b><span
style='font-size:9.0pt;mso-bidi-font-size:7.5pt;font-family:Courier'>open.c</span></b><span
style='font-size:9.0pt;mso-bidi-font-size:7.5pt;font-family:Courier'><span
style='mso-tab-count:2'><3E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> </span>Routines for opening and closing device extensions.<o:p></o:p></span></pre><pre><b><span
style='font-size:9.0pt;mso-bidi-font-size:7.5pt;font-family:Courier'>util.c</span></b><span
style='font-size:9.0pt;mso-bidi-font-size:7.5pt;font-family:Courier'><span
style='mso-tab-count:2'><3E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> </span>Auxiliary functions.<o:p></o:p></span></pre><pre><b><span
style='font-size:9.0pt;mso-bidi-font-size:7.5pt;font-family:Courier'>pnp.c</span></b><span
style='font-size:9.0pt;mso-bidi-font-size:7.5pt;font-family:Courier'><span
style='mso-tab-count:2'><3E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> </span>Routines for handling Plug &amp; Play events.<o:p></o:p></span></pre><pre><b><span
style='font-size:9.0pt;mso-bidi-font-size:7.5pt;font-family:Courier'>ioctl.c</span></b><span
style='font-size:9.0pt;mso-bidi-font-size:7.5pt;font-family:Courier'><span
style='mso-tab-count:2'><3E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> </span>Routines to handle IOCTL messages.<o:p></o:p></span></pre><pre><b><span
style='font-size:9.0pt;mso-bidi-font-size:7.5pt;font-family:Courier'>power.c</span></b><span
style='font-size:9.0pt;mso-bidi-font-size:7.5pt;font-family:Courier'><span
style='mso-tab-count:2'><3E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> </span>Routines to handle power management messages.<o:p></o:p></span></pre><pre><span
style='font-size:7.5pt;font-family:Courier'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></pre>
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style='font-size:10.0pt;font-family:Verdana'><a href="#top">Top of page</a> <o:p></o:p></span></p>
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style='font-size:7.5pt;font-family:"MS Sans Serif"'><3E> Microsoft Corporation
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