lcd help

akez

hey parallax people.

i need some help. i have a lcd terminal appmod
2 line x8 character lcd module with user buttons

can someone send me a simple code to let say write my name. "aaron". and just explain the bare essentials of what i need to make my own lcd program



akez

Post Edited By Moderator (Chris Savage (Parallax)) : 12/6/2005 6:45:46 PM GMT

Chris Savage

The documentation for the LCD AppMod demonstrates how to write text to the display.

http://www.parallax.com/dl/docs/prod/appmod/LcdTerminal.pdf

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Chris Savage
Parallax Tech Support
csavage@parallax.com

akez

well a another aproach to this is to first try to understand how it works. can someone please help me with this, i just can't seem to pick apart the sample program.

Post Edited By Moderator (Chris Savage (Parallax)) : 12/7/2005 6:43:12 PM GMT

GearHead

The program is commented as to what everything does. Follow the program logically and use the stamp editor help file.

That’s the only way to learn.

akez

ok..just one more question....what is the difference between 8 bit mode 4 bit mode, 2 line mode, do i need to initialize all of these..or no just what i need

Post Edited By Moderator (Chris Savage (Parallax)) : 12/8/2005 5:01:58 PM GMT

Jon Williams

When in doubt, turn to the specs. I wrote the aforementioned demo code based on the Hitachi HD44780A specification, as well as a bit of experience using it with the BASIC Stamp. There is nothing magic in our code; it is simply following the rules set forth by Hatachi to communicate with their LCD driver chip. You can find the 44780 specs all over the Internet.

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Jon Williams
Applications Engineer, Parallax

GearHead

Parallax has great docs on their site.

http://www.parallax.com/dl/docs/prod/audiovis/Hit44780.pdf

JJ