In order to contribute to this list, I've wanted to let  you guys know
that I found my problem. 

In my lcd_init routinue, I was sending the function set instructions (2
lines, 8bit, resolutions, etc) BEFORE my next command, which was turning
on the LCD and homing the cursor.

The solution was to first turn on the LCD, then to send the setup
instructions, then clear the LCD just in case there is chars on the
display.

Thanks for the help. 


Best Regards,
Steve Maroney

Business Computer Support, LLC
Mobile Phone:504-914-4704
Office Phone: 504-904-0266
Fax: 866-871-7797



-----Original Message-----
From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf
Of Wouter van Ooijen
Sent: Saturday, July 11, 2009 1:35 PM
To: Microcontroller discussion list - Public.
Subject: Re: [EE] Trouble on 2nd line of LCD

>> I have this LCD: http://www.futurlec.com/LED/LCD16x2.shtml
>
> There are two different styles of 2-line LCD display - those whose 
> 2nd line start address begins right after the 1st line finishes and a 
> similar-looking display whose 2nd line start address begins at (I 
> think) either decimal 40 or decimal 80.  I suspect that you are 
> running into that problem.
> 
> Sorry that I can't remember the specific details right now but it 
> might prompt someone else to chime in with the start address of the 
> 2nd line. 

When all magic and guesswork fails, where do you go for help? Hint: 
follow the URL.. No, not the ones in my sig.

-- 

Wouter van Ooijen

-- -------------------------------------------
Van Ooijen Technische Informatica: www.voti.nl
consultancy, development, PICmicro products
docent Hogeschool van Utrecht: www.voti.nl/hvu

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