![[Photo of the Author]](../../common/images/Guido-S.gif)
by Guido Socher (homepage)
锟斤拷锟斤拷锟斤拷锟斤拷:
Guido喜锟斤拷Linux锟斤拷锟斤拷锟斤拷锟斤拷为通锟斤拷Linux锟斤拷锟皆凤拷锟斤拷系统锟斤拷潜锟斤拷锟斤拷锟斤拷锟揭伙拷锟斤拷锟斤拷每锟斤拷锟剿讹拷锟杰诧拷锟斤拷锟斤拷锟叫★拷
目录:
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A LCD control panel for your Linux server
![[Illustration]](../../common/images/article236/pic03_finalpanel_th.jpg)
摘要:
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锟斤拷锟斤拷锟斤拷锟斤拷通锟斤拷锟斤拷锟斤拷锟斤拷LCD锟斤拷示锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷ip锟斤拷址锟斤拷ip锟斤拷锟诫，锟斤拷锟截ｏ拷锟截伙拷锟斤拷锟斤拷一
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锟斤拷perl实锟街ｏ拷锟斤拷锟斤拷锟阶革拷锟侥★拷
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1 锟斤拷 16锟斤拷 IC 锟斤拷锟斤拷
1 锟斤拷 MAX232
1 锟斤拷 小锟斤拷 5V 锟教碉拷锟斤拷
1 锟斤拷4MHz 锟斤拷锟斤拷
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1 锟斤拷BC557 PNP 锟斤拷锟斤拷锟斤拷
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1 锟斤拷 10nF锟斤拷锟斤拷
1 锟斤拷100nF锟斤拷锟斤拷
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2 锟斤拷 锟斤拷锟斤拷 100 欧姆
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![[Schematic]](../../common/images/article236/linuxlcdpanel_board_small.gif)
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| 未锟斤拷椎锟斤拷丫锟斤拷锟斤拷锟斤拷锟缴的帮拷锟斤拷 |
注锟解：锟斤拷知锟斤拷锟截ｏ拷锟教碉拷锟斤拷锟斤拷锟斤拷锟节凤拷装锟斤拷没锟叫达拷锟揭伙拷隆锟斤拷锟绞癸拷锟�5v锟斤拷锟斤拷Matsushita锟斤拷锟斤拷锟侥继碉拷锟斤拷锟斤拷
锟斤拷募痰锟斤拷锟揭诧拷锟斤拷锟斤拷业牟锟揭伙拷锟斤拷锟斤拷锟斤拷锟斤拷要锟斤拷锟斤拷牡锟铰凤拷锟侥讹拷一锟铰★拷
锟斤拷锟斤拷锟斤拷锟矫碉拷锟杰好的斤拷锟斤拷锟斤拷锟斤拷锟斤拷使锟斤拷锟饺伙拷锟斤拷锟斤拷FeCl3锟斤拷锟斤拷锟饺伙拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟铰ｏ拷蚀锟教的成癸拷锟斤拷
锟角很高的ｏ拷锟斤拷锟杰猴拷锟斤拷锟秸猴拷锟斤拷锟斤拷锟斤拷锟节诧拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟侥帮拷锟斤拷直锟斤拷锟斤拷锟斤拷锟斤拷一锟斤拷锟竭碉拷锟斤拷锟斤拷锟斤，锟斤拷锟矫碉拷锟斤拷
锟矫碉拷效锟斤拷锟斤拷铜锟斤拷锟接憋拷锟斤拷锟斤拷锟斤拷锟截ｏ拷锟斤拷锟斤拷锟斤拷锟饺伙拷锟斤拷锟斤拷锟斤拷一锟斤拷小平锟斤拷桶锟斤拷锟芥，铜锟斤拷锟接伙拷奂锟斤拷锟酵帮拷祝锟斤拷锟侥帮拷
锟接就凤拷锟斤拷锟角讹拷锟斤拷
锟节帮拷锟接猴拷锟斤拷之锟斤拷锟斤拷使锟斤拷 锟缴斤拷锟酵把帮拷锟斤拷锟斤拷洗锟斤拷锟斤拷锟斤拷锟姐焊锟接碉拷时锟津，伙拷锟斤拷锟斤拷锟斤拷锟斤拷锟解保锟斤拷铜锟斤拷锟斤拷
锟斤拷片锟斤拷锟斤拷锟斤拷锟斤拷
锟斤拷片锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷织锟斤拷锟斤拷锟铰硷拷锟斤拷锟侥硷拷锟斤拷
- lcd.c,
lcd.h, lcd_hw.h:
锟斤拷锟斤拷锟斤拷avr锟斤拷lcd锟斤拷示锟侥匡拷锟侥硷拷锟斤拷锟斤拷锟斤拷Peter Fleury 锟斤拷http://jump.tofleury/锟斤拷锟侥癸拷锟斤拷为锟斤拷锟斤拷锟斤拷
锟斤拷锟斤拷姹撅拷锟斤拷锟揭恍╋拷亩锟绞癸拷锟斤拷锟斤拷锟筋。锟斤拷锟斤拷园锟絃CD锟斤拷锟斤拷锟斤拷锟斤拷锟接碉拷锟斤拷片锟斤拷锟斤拷锟斤拷一锟脚ｏ拷锟斤拷只要锟斤拷
lcd_hw.h锟斤拷锟斤拷锟斤拷应锟侥讹拷锟藉。
- avr-util.c,
avr-util.h:
锟斤拷锟斤拷锟斤拷时锟侥猴拷锟斤拷锟斤拷
- uart.c,
uart.h: 锟斤拷锟斤拷RS232锟侥接口库函锟斤拷锟斤拷锟斤拷使锟斤拷锟斤拷硬锟斤拷锟叫断★拷每锟轿碉拷片锟斤拷锟斤拷锟杰碉拷一锟斤拷锟街节ｏ拷
锟斤拷锟酵伙拷执锟斤拷SIGNAL(SIG_UART_RECV)锟斤拷锟斤拷锟杰碉拷锟街节会拷锟斤拷锟斤拷一锟斤拷锟街凤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷Lcd锟斤拷锟斤拷锟斤拷
一锟斤拷锟斤拷锟叫凤拷锟斤拷示一锟斤拷锟斤拷锟斤拷慕锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷一锟斤拷锟斤拷锟叫凤拷锟斤拷uart_rx_linecomplete锟酵伙拷锟斤拷锟矫筹拷1锟斤拷
锟斤拷示一锟斤拷锟斤拷锟筋传锟斤拷锟斤拷稀锟矫匡拷锟斤拷锟斤拷畲拷锟斤拷锟较后，凤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷一锟斤拷锟筋，锟斤拷锟角等达拷一锟斤拷
时锟戒，锟斤拷片锟斤拷锟结返锟斤拷锟斤拷锟斤拷晒锟斤拷锟絆K锟斤拷,锟斤拷锟斤拷锟斤拷失锟斤拷(ERR)锟斤拷状态锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟剿ｏ拷PERL锟斤拷锟捷凤拷锟斤拷
状态锟斤拷锟斤拷锟斤拷一锟斤拷锟斤拷锟筋。
- analog.c,
analog.h: 模锟解到锟斤拷锟街碉拷转锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷也使锟斤拷锟斤拷锟叫断★拷一锟斤拷锟斤拷模转锟斤拷锟斤拷锟斤拷锟襟，筹拷锟斤拷却锟�
SIG_ADC锟叫断达拷锟斤拷锟斤拷锟斤拷锟斤拷锟紸DC锟侥达拷锟斤拷锟斤拷值锟斤拷
- hardwarewd.c,
hardwarewd.h:锟斤拷锟角匡拷锟脚癸拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷使锟斤拷锟节诧拷锟斤拷频锟斤拷锟斤拷锟斤拷1024锟斤拷锟斤拷时锟接刻度ｏ拷锟斤拷时锟斤拷
使锟斤拷16位锟侥达拷锟斤拷锟斤拷锟斤拷锟绞憋拷锟斤拷8位锟侥憋拷锟斤拷锟斤拷锟斤拷4M锟侥撅拷锟斤拷锟斤拷悖拷锟皆济匡拷锟斤拷锟斤拷锟斤拷锟斤拷16锟诫。PERL
锟斤拷锟斤拷为锟剿憋拷锟街硷拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷芯捅锟斤拷锟斤拷锟斤拷诘姆锟斤拷锟絘scii锟斤拷锟斤拷锟斤拷锟狡拷锟斤拷锟斤拷芽锟斤拷锟斤拷锟斤拷锟侥憋拷锟斤拷锟斤拷
锟矫成斤拷锟斤拷锟杰达拷锟街碉拷锟斤拷锟斤拷颍捅锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟剿ｏ拷锟斤拷锟街翟斤拷锟皆叫★拷锟斤拷锟斤拷锟斤拷锟斤拷0锟斤拷锟斤拷锟斤拷通锟斤拷
锟教碉拷锟斤拷锟斤拷锟斤拷硬锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟�
- linuxlcdpanel.c:
锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟较的硷拷榇拷锟斤拷锟斤拷锟酵帮拷锟斤拷锟侥凤拷锟斤拷锟斤拷
锟斤拷锟斤拷锟斤拷锟斤拷锟较革拷锟斤拷私锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷萍锟斤拷锟斤拷一锟铰碉拷片锟斤拷锟斤拷说锟斤拷锟侥碉拷锟斤拷datasheet锟斤拷锟斤拷锟斤拷锟斤拷锟铰碉拷
锟斤拷录锟斤拷锟斤拷锟斤拷锟斤拷钥锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟街憋拷拥锟� http://www.atmel.com/ 锟斤拷锟揭★拷
锟斤拷锟斤拷锟街伙拷锟斤拷锟绞癸拷锟斤拷锟斤拷锟斤拷锟斤拷锟皆达拷(download page)
锟斤拷锟斤拷linuxlcdpanel-0.7.tar.gz锟斤拷然锟斤拷锟窖癸拷锟揭伙拷锟侥柯硷拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷睿�
make
make
load
锟斤拷锟斤拷直锟斤拷使锟斤拷锟窖撅拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟街达拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷椎摹锟�
锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷页锟侥碉拷一篇锟斤拷锟斤拷锟斤看锟斤拷AVR锟斤拷伪锟斤拷
Programming
the AVR Microcontroller with GCC.
锟斤拷锟斤拷LCD锟斤拷锟斤拷锟斤拷锟�
LCD锟斤拷锟斤拷锟斤拷锟绞癸拷眉锟斤拷锟斤拷锟斤拷锟节诧拷锟斤拷5V锟斤拷源锟斤拷锟斤拷锟斤拷LCD锟斤拷锟斤拷锟斤拷锟斤拷一锟斤拷锟斤拷锟斤拷时锟斤拷锟斤拷锟斤拷使锟斤拷
锟斤拷锟斤拷锟斤拷锟皆达拷锟斤拷锟轿拷锟斤拷锟节猴拷锟接和帮拷装锟侥癸拷锟斤拷锟叫会犯一些小锟斤拷锟斤拷锟斤拷为锟斤拷锟斤拷锟斤拷牡锟皆达拷锟�
锟斤拷强锟斤拷锟斤拷锟斤拷要锟斤拷锟芥犯锟斤拷锟斤拷锟斤拷锟斤拷时锟斤拷峥达拷锟斤拷锟铰凤拷图锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟金。碉拷一锟斤拷锟斤拷使锟斤拷锟解部
锟斤拷源锟斤拷锟斤拷锟斤拷锟侥碉拷锟斤拷锟斤拷锟饺讹拷锟皆ｏ拷然锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷EPROM锟叫★拷之锟斤拷锟斤拷锟斤拷锟絃CD锟较匡拷锟斤拷"linux
.org"图锟疥。锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟接达拷锟节ｏ拷
MAX232 pin 14 to CTS (DB-9 pin 8)
MAX232 pin 7 to RXD (DB-9 pin 2)
MAX232 pin 13 to TXD (DB-9 pin 3)
锟斤拷也要锟斤拷 DTR锟斤拷DSR 锟斤拷 CD锟斤拷锟接碉拷锟斤拷应锟斤拷 (DB-9 pin 4, 6 and 1)锟斤拷
锟斤拷锟斤拷圆渭锟皆拷锟酵硷拷锟�
![[talking to the LCD panel over the serial line]](../../common/images/article236/test_with_cat.gif)
锟斤拷使锟矫达拷锟斤拷之前锟斤拷锟斤拷锟绞硷拷锟斤拷锟斤拷锟絣inuxlcdpanel-0.7.tar.gz锟侥归档目录锟斤拷一锟斤拷ttydevinit锟斤拷
锟斤拷锟侥撅拷锟斤拷锟斤拷锟斤拷隆锟斤拷锟斤拷锟斤拷目锟斤拷锟斤拷锟斤拷锟斤拷锟接碉拷锟斤拷锟斤拷2锟斤拷锟斤拷锟斤拷要锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟筋：
./ttydevinit /dev/ttyS1
锟斤拷锟斤拷锟斤拷拇锟斤拷锟斤拷锟斤拷锟斤拷锟绞硷拷锟轿�9600bps锟斤拷锟斤拷锟斤拷锟酵拷锟侥匡拷锟斤拷锟斤拷锟�"锟皆伙拷"锟剿★拷锟斤拷2锟斤拷XTERM锟斤拷
锟斤拷锟节ｏ拷锟斤拷锟斤拷锟斤拷一锟斤拷锟斤拷锟斤拷"cat /dev/ttyS1"锟斤拷锟斤拷一锟斤拷"cat >/dev/ttyS1"锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷约锟斤拷锟�
锟斤拷锟斤拷锟斤拷纾琹=11 (锟斤拷 LED 1)锟斤拷锟斤拷 l=10 (锟截憋拷LED 1)锟斤拷锟斤拷锟斤拷一锟斤拷XTERM锟斤拷锟斤拷锟叫匡拷锟斤拷锟斤拷锟斤拷
锟斤拷状态锟斤拷息"OK"锟斤拷
锟斤拷锟叫碉拷锟斤拷锟斤拷锟斤拷 README.commands
锟斤拷锟叫斤拷锟酵★拷
锟斤拷源锟斤拷锟斤拷锟侥柯硷拷校锟斤拷锟揭伙拷锟斤拷募锟斤拷锟轿猼tytest.pl锟斤拷PEAL锟斤拷锟斤拷锟斤拷只锟斤拷每锟斤拷一锟斤拷
时锟斤拷痛蚩凸乇锟絃ED1锟斤拷锟斤拷只锟斤拷一锟斤拷锟斤拷示锟斤拷慰锟斤拷锟絃CD锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟接筹拷锟斤拷锟斤拷锟斤拷锟斤拷锟�
锟斤拷为锟斤拷锟斤拷锟斤拷写锟斤拷锟皆硷拷锟侥筹拷锟津。匡拷一锟斤拷锟斤拷锟斤拷源锟斤拷锟斤拷锟斤拷学要一些PEAL锟侥伙拷锟斤拷知识锟斤拷锟斤拷锟斤拷锟斤拷
锟杰短★拷
锟斤拷锟接匡拷锟脚癸拷
锟斤拷锟脚癸拷缺省锟斤拷锟斤拷锟角关闭的★拷锟斤拷锟斤拷锟绞癸拷锟斤拷锟斤拷锟絯=1锟斤拷锟斤拷锟斤拷锟斤拷使锟斤拷锟斤拷锟斤拷s=x锟斤拷x锟斤拷0锟斤拷1锟斤拷2锟斤拷锟斤拷锟斤拷锟斤拷
255锟斤拷锟斤拷锟斤拷锟斤拷锟绞憋拷洹ｏ拷锟斤拷锟絪=10锟斤拷示锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟绞憋拷锟斤拷锟�16锟斤拷10锟诫。锟斤拷锟斤拷锟斤拷锟剿筹拷锟斤拷锟斤拷要锟斤拷锟斤拷
锟斤拷锟斤拷锟斤拷s锟斤拷锟解看锟脚癸拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟街拷锟絃inux锟斤拷锟斤拷锟斤拷锟斤拷锟劫碉拷锟斤拷锟侥★拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟�
锟斤拷锟斤拷没锟斤拷锟剿帮拷RESER锟斤拷锟斤拷锟斤拷锟斤拷没锟斤拷知锟斤拷锟斤拷锟斤拷锟斤拷锟斤，锟斤拷为锟斤拷锟窖撅拷2锟斤拷没锟斤拷锟斤拷锟解，锟斤拷时锟斤拷锟脚癸拷锟斤拷
锟斤拷锟矫就会发锟斤拷锟剿★拷
锟斤拷锟脚癸拷锟斤拷锟斤拷锟斤拷只锟斤拷锟斤拷一锟轿★拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟较低筹拷锟斤拷锟侥硷拷系统时锟斤拷锟劫达拷锟斤拷锟斤拷锟斤拷
锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷姆锟斤拷锟斤拷锟斤拷说某锟斤拷锟接︼拷眉锟斤拷锟斤拷锟斤拷锟�
锟斤拷锟斤拷锟斤拷锟较ｏ拷锟斤拷锟斤拷要锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷RESET锟斤拷锟斤拷锟斤拷锟斤拷2锟斤拷锟斤拷锟斤拷锟皆憋拷锟劫诧拷2锟斤拷锟斤拷锟竭ｏ拷锟斤拷一
锟剿接碉拷锟斤拷锟斤拷锟斤拷锟侥匡拷锟脚癸拷锟斤拷锟斤拷锟侥继碉拷锟斤拷锟剿★拷
锟斤拷么使锟矫匡拷锟脚癸拷锟斤拷
锟斤拷锟脚癸拷锟斤拷证系统锟杰癸拷执锟叫筹拷锟津，诧拷锟杰憋拷证一锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟捷匡拷锟斤拷锟斤拷锟叫伙拷锟斤拷锟斤拷锟斤拷应锟斤拷锟斤拷锟斤拷锟�
锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷应锟斤拷锟斤拷锟斤拷crontab entry锟斤拷锟斤拷锟狡的筹拷锟斤拷锟斤拷芸隙锟絚rontab一锟姐不锟斤拷锟斤拷锟�
锟解，锟斤拷锟脚癸拷锟斤拷俣锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷小锟�
锟斤拷锟斤拷锟斤拷锟斤拷一锟斤拷锟脚憋拷锟斤拷每锟斤拷15锟斤拷锟斤拷锟斤拷锟斤拷锟皆硷拷锟斤拷锟斤拷锟斤拷锟斤拷一锟斤拷页锟芥。锟斤拷锟斤拷锟斤拷要小锟侥ｏ拷
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锟斤拷锟斤拷锟斤拷锟较的脚憋拷
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NETMASK=255.255.255.0
IPADDR=10.0.0.4
GATEWAY=10.0.0.2
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锟斤拷锟斤拷锟斤拷锟斤拷锟芥本锟斤拷些锟斤拷锟侥诧拷锟届。
锟洁辑/etc/rc.d/init.d/network锟侥硷拷锟斤拷锟斤拷锟斤拷一锟叫改筹拷
/usr/sbin/llp.pl /dev/ttyS1&
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/etc/rc.d/init.d/network start
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Log files
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/var/log/llp.log {
nocompress
monthly
}
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![[main]](../../common/images/article236/display_inaction1.jpg)
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IP锟斤拷址锟斤拷锟斤拷锟睫改碉拷锟斤拷锟斤拷
![[change IP]](../../common/images/article236/display_inaction3.jpg)
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2002-03-22, generated by lfparser version 2.27
![[LinuxFocus-icon]](../../common/images/logolftop_319x45.gif){kind=small}
![[Schematic]](http://main.linuxfocus.org/common/images/article236/linuxlcdpanel_schematic_big.gif)
![[board]](http://main.linuxfocus.org/common/images/article236/linuxlcdpanel_board.gif)
![[before etching]](../../common/images/article236/pic01_beforeetching.jpg)
![[after etching]](../../common/images/article236/pic02_boardready.jpg)
![[talking to the LCD panel over the serial line]](http://main.linuxfocus.org/common/images/article236/test_with_cat.gif)
锟斤拷使锟矫达拷锟斤拷之前锟斤拷锟斤拷锟绞硷拷锟斤拷锟斤拷锟絣inuxlcdpanel-0.7.tar.gz锟侥归档目录锟斤拷一锟斤拷ttydevinit锟斤拷
锟斤拷锟侥撅拷锟斤拷锟斤拷锟斤拷隆锟斤拷锟斤拷锟斤拷目锟斤拷锟斤拷锟斤拷锟斤拷锟接碉拷锟斤拷锟斤拷2锟斤拷锟斤拷锟斤拷要锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟筋：