programmin bs2 with serial lcd

voukefalas

hallo..
i try to programme mine bs2 and i totaly comfused.
I have 2 push button and one lcd .(and the resistors of course )
When one pushbutton have been pressed i want to clrear my lcd and write a menu.I have already try lot's thing that i had found in web but i still din't have a solution.
Here is my small programme ....could you somebody helps me with that?
my lcd doesn't clear and the letters is side by side(from the 2 menus that i had)

DO
INPUT 1
INPUT 2

IF (IN1=1) THEN GOSUB lcd1
IF (IN2=1) THEN GOSUB lcd2

PAUSE 100
LOOP

lcd1 :

SEROUT 15, 16780,["main programme"]
SEROUT 15,16780 ,["alexandros"] /here is that i have a promblem and if i pressed again the button,the letters in the lcd steps side by side

RETURN

lcd2:
SEROUT 15,16780,[" "]
PAUSE 50
SEROUT 15,16780,["service "]
RETURN

davejames

voukefalas - welcome to the Forum.

The LCD is treated as one long string of characters. So if you want to "break" the line, you'll have to direct the text to another line.

Which LCD are you using?

Also, some LCDs (especially the ones from Parallax) require an initialization before sending them any data.

Have you read the documentation for your particular LCD?

DJ

graffix

Im not sure you have these yet.
http://www.parallax.com/Store/Accessories/Displays/tabid/159/CategoryID/34/List/0/SortField/0/Level/a/ProductID/50/Default.aspx

voukefalas

initialization??? i din't try to do that !!!! the lcd is from Parallax and i fave it almost 10 years...i couldn't find the manual but it's the one that has 16x2 lines non backlight....
how can i initialization the lcd??? could you help me please???

davejames

Go here (it's part of the link graffix referenced):

http://www.parallax.com/Portals/0/Downloads/docs/prod/audiovis/27976-7-9-ParallaxSerialLCD-v3.0.pdf

and read through the document. It has everything you'll need to program the LCD correctly (including sample code).

If you have questions after the read, we can go from there.