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<sect1 id="lis-howto">
<title>The lis Driver</title>
<para>
This section talks about using LCDproc with the VLSystem L.I.S
MCE 2005 Vacuum Fluorescent Display (VFD) based on the FTDI USB-to-serial
converter, the Microchip PIC-16F716 microcontroller, and
the NEC UPD16314 display driver manufactured by
<ulink url="http://www.vlsys.co.kr">VLSystem</ulink>.
</para>
<!-- ## VLSys lis driver ## -->
<sect2 id="lis-features">
<title>Features</title>
<para>
This device uses a vacuum fluorescent display of 20 characters by 2 lines. Each each
character is 5 pixels wide by 8 pixels high. The device is connected by USB. The FTDI chip
translates the USB protocol to serial expected by the VFD driver chip, an NEC UPD16314.
A programmable interrupt controller (PIC), the PIC16F716 by Microchip, provides the glue
between the FTDI and the NEC chips.
</para>
</sect2>
<sect2 id="lis-requirements">
<title>Requirements</title>
<para>
The driver depends on <filename>libftdi</filename>, version 0.8 or higher, from
<ulink url="http://www.intra2net.com/en/developer/libftdi/">
http://www.intra2net.com/en/developer/libftdi/</ulink>.
</para>
<para>
<filename>libftdi</filename> itself depends on the
<ulink url="http://libusb.info/"><filename>libusb</filename></ulink>
USB library.
<note>
<para>
When using a <filename>libusb</filename> based driver like <code>lis</code>,
<application>LCDd</application> needs to be started as root.
</para>
</note>
</para>
</sect2>
<sect2 id="lis-config">
<title>Configuration in LCDd.conf</title>
<sect3 id="lis-config-section">
<title>[lis]</title>
<variablelist>
<varlistentry>
<term>
<property>Size</property> = ¶meters.size;
</term>
<listitem><para>
Set the display size. The default <literal>20x2</literal> should be safe
for most if not all users, since the device seems to be made only with
this one size.
But who knows …
</para></listitem>
</varlistentry>
<varlistentry>
<term>
<property>VendorID</property> =
<parameter><replaceable>VENDORID</replaceable></parameter>
</term>
<listitem>
<para>
The USB Vendor ID of the device to use.
If not given, it defaults to <literal>0x0403</literal> for a VLSystems L.I.S. MCE 2005 VFD
based on a FT232BL USB-to-RS232 converter by FTDI, which was produced
before March 2007.
</para>
<para>
It is usually not necessary to specify a <replaceable>VENDORID</replaceable>.
Please do so only if you want to test a compatible device.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>
<property>ProductID</property> =
<parameter><replaceable>PRODUCTID</replaceable></parameter>
</term>
<listitem>
<para>
The USB Product ID of the device to use.
If not given, it defaults to <literal>0x6001</literal> for a VLSystems L.I.S. MCE 2005 VFD
based on a FT232BL USB-to-RS232 converter by FTDI, which was produced
before March 2007.
</para>
<para>
It is usually not necessary to specify a <replaceable>PRODUCTID</replaceable>.
Please do so only if you want to test a compatible device.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>
<property>Brightness</property> =
<parameter><replaceable>BRIGHTNESS</replaceable></parameter>
</term>
<listitem>
<para>
Set the initial brightness [default: <literal>1000</literal>;
legal: <literal>0</literal> - <literal>1000</literal>. Values
between 0 and 250 give 25% brightness, 251 to 500 give 50% brightness,
501 and 750, give 75% brightness, and values higher than 751 give 100%
brightness.
</para>
</listitem>
</varlistentry>
</variablelist>
</sect3>
</sect2>
</sect1>
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