home
 
news
Free Software
 
mimetic
cutee
eeprog
recover
lcd
Commercial Software
 
obsolete
About me
 
resume
contact
 

 

  Intro   Download   Usage and examples
Intro

Here you'll find all required software to use Hitachi HD44780 based LCD character displays.

The first time I bought one of those it was a 20x2 Crystal Fontz display:

It's quite cool but it's not very easy to install in a PC. You have to solder a bunch of electric wires from the LCD to a parallel port connector and a couple more wires to get the proper voltage from your power supply. You can find a very good HOWTO by Michael Sobik here.

Then I bought a serial display by cw-linux called CW1602. It's smaller (just 16x2) but nicer. It also has 6 buttons and 4 GPIO (general purpose I/O) that could be very useful for embedded application. You don't have to solder anything, just plug it into the internal or external serial connector, plug-in the power cable and that's it. The USB version is available on cwlinux site too.

Download

Latest release is 0.2.1

You can download it here: lcd-0.2.1.tar.gz

Usage and examples

Both lcd.ser for the cwlinux display and lcd.par for parallel one (connected as suggested in the above mentioned HOWTO) work like the well-known echo command. Just call the proper program (based on your display type) followed by the text you want to display. Echo a '\n' char to step down one line. Note that the first parameter of lcd.ser must be the serial device file to use (i.e. /dev/ttySn).

At this stage there are no more features except this very basic echo function but you'll be able to add your own very easily.

Examples:

# lcd.ser /dev/ttyS1 hello world!
#
# lcd.par hello world!
#
	

 
Google
Web codesink.org

Sponsored links:


All contents Copyright (c) 2003-2013 by Stefano Barbato. All Rights Reserved. Site made with vim. Syntax highlighter source-highlight