lcdproc -- ʹLCD��ʾ������ʹ�ú�����

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original in en Guido Socher

en to zh_CN SEVEN

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lcdprod��ʲô��

#!/usr/bin/perl -w
....
# initiate the communication:
print $remote "hello\n";
....
# set our name and define a text string widget
print $remote "client_set name lcdtime\n";
print $remote "screen_add scr1\n";
print $remote "widget_add scr1 str1 string\n";
....
while(1)
{
    ....
    $date = scalar localtime;
    # now write to the LCD:
    print $remote "widget_set scr1 str1 1 1 \"$date\"\n";
    sleep 10;
}

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2. ���������������/dec/LCDd.conf�ļ���
3. ��root�û�����LCDd����
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Parallel port  
pin 1 , strobe  = 220, supply voltage
pin 2 , D0      = LCD pin D4
pin 3 , D1      = LCD pin D5
pin 4 , D2      = LCD pin D6
pin 5 , D3      = LCD pin D7

pin 6 , D4      = LCD pin RS
pin 7 , D5      = LCD pin RW
pin 8 , D6      = LCD pin EN

pin 10, ACK     = button A, upper red button
pin 12, PE      = button C, lower black button

pin 14, strobe  = 220, supply voltage
pin 16, strobe  = 220, supply voltage
pin 17, strobe  = 220, supply voltage

pin 18, ground  = 0V, GND

lcdproc���ڵ�Դ����

tar zxvf lcdproc-0.4.5.tar.gz
cd lcdproc-0.4.5
patch -p 1 < lcdproc-0.4.5-pp-powerpatch-v1.txt
./configure --enable-drivers=hd44780
make

make install

��������ֻ��Ҫ��LCDd.conf������/etc������sever/LCDd������/usr/bin��

LCDd.conf�ļ�

[server]
Driver=HD44780

[HD44780]
# Hitachi HD44780 driver

Port=0x3BC
# Port where the LPT is. Usual values are 0x278, 0x378 and 0x3BC

ConnectionType=4bit
Keypad=yes
Backlight=no

Size=20x2
# Specifies the size of the LCD.

DelayMult=4
DelayBus=true

modprobe parport
modprobe parport_pc

cat /proc/ioports

...
0388-0389 : OPL2/3 (left)
038a-038b : OPL2/3 (right)
03bc-03be : parport0
03c0-03df : vga+
03f6-03f6 : ide0
...

����������������ʹ��: 0x3bc

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