Also, I think I should add that If I turn the contrast all the up, to
where I cant read the chars and see square blocks, I thought I would see
the second row blocks, as I do the first row, but I only see the first
row.

Hopefully that makes some sense.


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 Steve Maroney
Sent: Friday, July 10, 2009 10:31 PM
To: Microcontroller discussion list - Public.
Subject: RE: [EE] Trouble on 2nd line of LCD

Dear gang,

I have this LCD: http://www.futurlec.com/LED/LCD16x2.shtml

I can write chars to the LCD and seems to work ok but when I move the
cursor to the 2nd line, and write to the LCD, nothing is displayed. 

To move the cursor the 2nd line, I clear the RS bit, send 0xC0, then
pulse the EN bit. 

The code works as expected on the OSHON PIC IDE/Simulator.  Anyone have
any ideas on what im doing wrong ?

Before writing characters to the LCD, I have this small function to
setup the LCD:

First I bring the RS bit low and bring the EN bit high

movlw 0x38  	; 8bit, 2 line, 5x7 resolution
movwf PORTC

then  I pulse the EN bit

movlw 0x0C		; display on, cursor off
movwf PORTC		

pulse the EN bit again

movlw 0x01		; clear LCD display
movwf PORTC

pulse the EN bit again

finally I bring the RS bit high before returning from the routine.


Best Regards,
Steve Maroney

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

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View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist