cfontz.docbook

linux下LCD驱动的例子代码

<sect1 id="CFontz-howto">
<title>The CFontz Driver</title>

<para>
This section talks about using LCDproc with LCD displays that use the
CFontz chipset.
</para>

<!-- ## CrystalFontz driver (for CF632 &amp; CF634) ## -->
<sect2 id="CFontz-config">
<title>Configuration in LCDd.conf</title>

<sect3 id="CFontz-config-section">
<title>[CFontz]</title>

<variablelist>
<varlistentry>
  <term>
    <command>Device=</command>
    <arg choice="plain"><replaceable>DEVICE</replaceable></arg>
  </term>
  <listitem><para>
    Select the serial output device to use.
    If not given, default is <filename>/dev/lcd</filename>.
  </para></listitem>
</varlistentry>

<varlistentry>
  <term>
    <command>Size=</command>
    <arg choice="plain">
      <replaceable>WIDTH</replaceable>
      <literal>x</literal>
      <replaceable>HEIGHT</replaceable>
    </arg>
  </term>
  <listitem><para>
    Set the LCD's dimensions in terms of characters per line and lines.
    If not given, it defaults to <literal>20x4</literal>.
  </para></listitem>
</varlistentry>

<varlistentry>
  <term>
    <command>Contrast=</command>
    <arg choice="plain"><replaceable>CONTRAST</replaceable></arg>
  </term>
  <listitem><para>
    Set the initial contrast.
    Legal values for <replaceable>CONTRAST</replaceable> are in the range
    between <literal>0</literal> and <literal>1000</literal>.
    If not given, it defaults to <literal>140</literal>.
  </para></listitem>
</varlistentry>

<varlistentry>
  <term>
    <command>Brightness=</command>
    <arg choice="plain"><replaceable>BRIGHTNESS</replaceable></arg>
  </term>
  <listitem><para>
    Set the initial brightness.
    Legal values for <replaceable>BRIGHTNESS</replaceable> range from
    <literal>0</literal> to <literal>255</literal>.
    If not given, it defaults to <literal>255</literal>.
  </para></listitem>
</varlistentry>

<varlistentry>
  <term>
    <command>OffBrightness=</command>
    <arg choice="plain"><replaceable>BRIGHTNESS</replaceable></arg>
  </term>
  <listitem><para>
    Set the initial off-brightness.
    This value is used when the display is normally
    switched off in case LCDd is inactive.
    Legal values <replaceable>BRIGHTNESS</replaceable> are in the range
    from <literal>0</literal> to <literal>255</literal>.
    The default is <literal>0</literal>.
  </para></listitem>
</varlistentry>

<varlistentry>
  <term>
    <command>Speed=</command>
    <arg choice="plain">
    <group choice="req">
      <arg choice="plain"><literal>1200</literal></arg>
      <arg choice="plain"><literal>2400</literal></arg>
      <arg choice="plain"><literal><emphasis>9600</emphasis></literal></arg>
      <arg choice="plain"><literal>19200</literal></arg>
      <arg choice="plain"><literal>115200</literal></arg>
    </group>
    </arg>
  </term>
  <listitem><para>
    Set the the baud rate to use when communicating with the LCD.
    It defaults to <literal>9600</literal> if not specified.
  </para></listitem>
</varlistentry>

<varlistentry>
  <term>
    <command>NewFirmware=</command>
    <arg choice="plain">
    <group choice="req">
      <arg choice="plain"><literal>yes</literal></arg>
      <arg choice="plain"><literal><emphasis>no</emphasis></literal></arg>
    </group>
    </arg>
  </term>
  <listitem><para>
    Set the firmware version (<emphasis>New</emphasis> means >= 2.0) [default: <literal>no</literal>; legal: <literal>yes</literal>, <literal>no</literal>]
  </para></listitem>
</varlistentry>

<varlistentry>
  <term>
    <command>Reboot=</command>
    <arg choice="plain">
    <group choice="req">
      <arg choice="plain"><literal>yes</literal></arg>
      <arg choice="plain"><literal><emphasis>no</emphasis></literal></arg>
    </group>
    </arg>
  </term>
  <listitem><para>
    Reinitialize the LCD's BIOS [default: <literal>no</literal>; legal: <literal>yes</literal>, <literal>no</literal>]
    normally you shouldn't need this
  </para></listitem>
</varlistentry>
</variablelist>

</sect3>

</sect2>

</sect1>