code for LCD-4x20 HD44780....HELP

[Martin....]

Hi

My English is not that good....I´m from Germany...
Has anybody written a Code in Pic Basic to use an
LCD-Display 4x20 with the controller HD44780.
I would like to use the lcd command but it´s only available in the pro version.
Where can I get it? And how much is it? I build an roboter with Steppermotors and a display. Everything is working except the diplay.
Please post some Code.......I gonna try to understand it.
My pic is the 16f627 or 16f627A But the code just nedds to be in pic basic
I can change it for my pic if it´s not working.thx

Martin

[BobK]

Hi Martin,

About the only way I think you can get an LCD to work in PicBasic is to either get an assembly code routine OR get a serial LCD. With a serial LCd you simply use the SerOut command. A 4 line display isn't hard to use at all compared to a 2 line display. You simply set up the Constants for the other 2 lines and send the appropriate commands to the display.

As far as PicBasicPro, you can get the upgrade from MELabs, Rentron, or many other places that sell PICs and microcontroller items. Bruce from Rentron has an awesome web site with alot of valuable devices and how to use them. He even lists PBP and PBC code to help you get started.

It is worth the price for the upgrade.

BobK

[BobK]

Hi Martin,

It appears I gave you the wrong information in my previous post. Yes you can use a 4x20 LCD in PicBasic. Chuck Hellebyck's book "Programming PIC Microcontrollers in Basic" has several examples in Chapter 7. This book is available from Amazon.com or from Chuck's website www.elproducts.com.

Check it out.

BobK

[Martin....]

Is this book also online available? It´s pretty expensive or has anybody copyed the code? I found a demo version of an pro compiler but it can only compile 30 lines. Does anybody know where i can get one for free.......bittorent or sth like that

Martin

[SteveB]

Here's sample code for the PICBASIC Compiler, including a LCD demo:
http://www.melabs.com/resources/samples.htm#pbc

Steve

[sammy]

hi:
Parallax has a very good code example and aplication in their documentation. I have included a link for you and with a few modifications you can get this working very very well. Just look through the pdf and find the aplication note that shows the interface of a key pad and LCD.

http://www.parallax.com/dl/appnt/stamps/bs1Appnotes.pdf

If you have any question let me know as i did this once before switching to the pic basic pro.


latter


sam