SimpleLcdModule

goal

The goal is to interface to a HD44780 based LCD that I got on ebay. The module is a 4 line X 20 Char (80 char total) unit with green backlight. I want to use the 4 wire parallel interface because it seems silly to tie up 8 lines of I/O. Still I haven't bothered as I haven't need the extra IO for other things yet...

details

this project was completed sometime ago but i never wrote it up i guess. i ported the parallel port drivers to be better suited for a microcontroller. while i actually did the testing with a PIC the headers are meant for any micro and will be used with the AvronicsKit as well as any other place i can stick a lcd.

the lcd blocks while it is busy so the PIC polls the busy flag and is able to write to the lcd very fast because of this. the demo app displays the text shown and then moves the cursor across the bottom of the screen (shown 2/3 across)

references

* http://ouwehand.net/~peter/lcd/lcd.shtml

-- ChristopherPepe - 17 Mar 2006