308 lines
7.3 KiB
Plaintext
308 lines
7.3 KiB
Plaintext
<sect1 id="serialVFD-howto">
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<title>The serialVFD Driver</title>
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<para>
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This section talks about using LCDproc with LCD displays that use the
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serialVFD chipset.
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</para>
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<sect2 id="serialVFD-connections">
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<title>Connections</title>
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The serialVFD-driver should work with all NEC FIPC8367 based VFDs:
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NEC FC20X2JA
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NEC FM20X2KB-AB
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NEC FC20X1SA-AB/AA
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...
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Tested only on: NEC FM20X2KB-AB
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The driver also works (tested) on "KD Rev 2.1" (an ATMEL AT90S....
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based FM20X2KB-AB replacement).
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Note: Above char. 128 the FIPC-displays and KD's charactersets
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are different.
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The driver may work or will be easy to get working on the following
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Displays / Controllers (not tested!).
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<table>
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<tgroup cols="2">
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<thead>
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<row>
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<entry>Display</entry>
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<entry>Controller</entry>
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</row>
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</thead>
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<tbody>
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<row>
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<entry>FUTABA M204SD01AA</entry>
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<entry>FUTABA 5P00A016</entry>
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</row>
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<row>
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<entry>Noritake CU20026SCPB-T</entry>
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<entry>(microcontroller)</entry>
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</row>
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<row>
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<entry>Noritake CU20045SCPB-T28A</entry>
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<entry>?</entry>
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</row>
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</tbody>
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</tgroup>
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</table>
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... or compatible.
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(most Futaba/Noritake 7x5 dot VFDs with serial(rs232) interface
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(including serial(rs232)/parallel types))
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<para>
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Maybe there are little changes in the commands to do to get all
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functions to work correctly. But because of the similarity of the
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protocols, it wont be much work.
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</para>
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<para>
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If you want to add a new device to the driver add a new section
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to the displaytype-switch-case in the init-function and fill it
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with the correct commands for the display.
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(Try which displaytype works best with your display, copy and modify
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it's section that is the easiest way I guess.)
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</para>
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<para>
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On this page you may find pictures and datasheets of the VFDs:
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<ulink url="http://www.maltepoeggel.de/html/vfd/index.html"></ulink>
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</para>
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<para>
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It is possible to switch the display off and back on while the server is
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running. It may take a few minutes until the next full refresh makes
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the display show everything correctly.
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</para>
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<para>
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To enable the bignumbers on 2-line displays (only this driver supports
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this yet) you have to edit <filename>clients/lcdproc/chrono.c</filename>
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before compiling.
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In function <function>big_clock_screen</function> you have to replace the
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<literal>4</literal> by a <literal>2</literal> in this line:
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<code>if (lcd_hgt < 4)</code>
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</para>
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<para>
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This driver uses the serial mode of the displays.
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It is NOT possible to connect most of the displays directly to the
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serialport. The signal has to be inverted. I use the following
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circuit to do that job.
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</para>
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<figure>
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<title>serialVFD: Connecting the display</title>
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<screen>
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<![CDATA[
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Computer Display
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(signal)
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HDD Powerconnector
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color(Voltage)
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red(+5V) --------------------------------o----- +5V
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black(GND) --------------------o |
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| R
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| R 10k
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Serial(SUB-D 9Pin female) V* R
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pin(signal) |
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3(TxD) --RRRR--o--o o-----------------o----- RxD
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10k | | |
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| | C|
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| | ----- BC547c (or similar NPN)
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R | B| / |
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10k R o--|-| |
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R | \ |
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| --->- A*
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| E| |
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5(GND) --------o----------o----o----------------- GND
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Shield ------------------------------------------
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optional
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*connect near display
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]]>
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</screen>
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</figure>
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The pins on the different displays vary.
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FM20X2KB-AB:
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CN1:
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Pin 33 <--- RxD
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(Testmode: connect pins 25 and 26, then power up)
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CN2:
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Pin 1 <--- +5V
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Pin 2 <--- GND
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KD Rev 2.1:
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blue connector (6pin in a row) (the important one!):
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<screen>
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<![CDATA[
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--------------------------------
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| +5V +5V RxD GND GND GND |
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--------------------------------
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]]>
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</screen>
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<tip>
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<para>
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Hold the display in that position where you can read
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the "KD Rev 2.1" marking normally!
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</para>
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</tip>
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gray connector (10pin 2 rows):
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Do not use. (the ATMEL ISP connector I guess)
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The two jumpers next to the gray connector:
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Normally not used.
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You can activate two different testmodes with them.
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</sect2>
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<!-- ## Serial VFD driver ## -->
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<sect2 id="serialVFD-config">
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<title>Configuration in LCDd.conf</title>
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<sect3>
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<title>[serialVFD]</title>
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<variablelist>
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<varlistentry>
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<term>
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<command>Device=</command>
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<arg choice="plain"><replaceable>DEVICE</replaceable></arg>
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</term>
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<listitem><para>
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Device where the VFD is. Usual values are <filename>/dev/ttyS0</filename> and <filename>/dev/ttyS1</filename>
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Default: <filename>/dev/lcd</filename>
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term>
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<command>Size=</command>
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<arg choice="plain">
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<replaceable>WIDTH</replaceable>
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<literal>x</literal>
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<replaceable>HEIGHT</replaceable>
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</arg>
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</term>
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<listitem><para>
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Specifies the size of the VFD.
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default: <literal>20x2</literal>
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term>
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<command>Type=</command>
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<arg choice="plain"><replaceable>CODE</replaceable></arg>
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</term>
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<listitem>
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<para>
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Specifies the display type.[default: 0]
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The following type codes are available:
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</para>
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<informaltable>
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<tgroup cols="2">
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<thead>
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<row>
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<entry><replaceable>CODE</replaceable></entry>
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<entry>VFD model</entry>
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</row>
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</thead>
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<tbody>
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<row>
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<entry><literal><emphasis>0</emphasis></literal></entry>
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<entry>NEC (FIPC8367 based) VFDs</entry>
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</row>
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<row>
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<entry><literal>1</literal></entry>
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<entry>KD Rev 2.1</entry>
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</row>
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<row>
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<entry><literal>2</literal></entry>
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<entry>Noritake VFDs</entry>
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</row>
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<row>
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<entry><literal>3</literal></entry>
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<entry>Futaba VFDs</entry>
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</row>
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</tbody>
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</tgroup>
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</informaltable>
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<note><para>
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Options 3 and 4 should work, but have not been tested yet. Feedback is welcome.
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</para></note>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>
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<command>Brightness=</command>
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<arg choice="plain"><replaceable>BRIGHTNESS</replaceable></arg>
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</term>
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<listitem><para>
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Display brightness [default: 255].
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0 min ... 255 max ... 1000 also max
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(4 steps 0-64, 65-128, 129-192, 193-1000)
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term>
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<command>Speed=</command>
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<arg choice="plain">
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<group choice="req">
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<arg choice="plain"><literal>1200</literal></arg>
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<arg choice="plain"><literal>2400</literal></arg>
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<arg choice="plain"><literal><emphasis>9600</emphasis></literal></arg>
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<arg choice="plain"><literal>19200</literal></arg>
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<arg choice="plain"><literal>115200</literal></arg>
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</group>
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</arg>
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</term>
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<listitem><para>
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Set the the baud rate communication with the VFD.
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If not given, it defaults to <literal>9600</literal>.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term>
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<command>ISO_8859_1=</command>
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<arg choice="plain">
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<group choice="req">
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<arg choice="plain"><literal><emphasis>yes</emphasis></literal></arg>
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<arg choice="plain"><literal>no</literal></arg>
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</group>
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</arg>
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</term>
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<listitem><para>
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Enable ISO-8859-1 compatibility. Ddefault is <literal>yes</literal>.
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</para></listitem>
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</varlistentry>
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</variablelist>
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</sect3>
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</sect2>
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</sect1>
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