character lcd 4 lines

[jojokatada]

lcd 4 line
hi anybody could help me how to display a 4 line character lcd.

sample code

main:
pause 1

lcdout $fe,1," Hello world", $fe,c0," hello again" ,fe,94,"welcome" fe,d4,"thank you"

goto main

end

[Dwayne]

Hello Jojo,

Chances are, you have two enable lines... one for the top 2 lines and one for the bottom two lines..

Do a search on LCD in this forum... here is a example of a search

http://www.picbasic.co.uk/forum/show...ghlight=LCD%2A

Dwayne

[mister_e]

OR you forget to include

DEFINE LCD_LINES 4

Also try to increase you start up delay to 1 second.


is your LCD display something??? at least on the 2 first line.

I agree with DWAYNE, your LCD probably have 2 enable line if it's a 4X40 one.

[jojokatada]

hi thank for help

i am using 4x20 lcd

[mister_e]

It will be hard for us if you don't provide any info of your hardware connection, crystal speed and the PIC you're using.

Let's assume you use the same connection in the PBP manual.

Usually 4X20 LCD don't have 2 enable line. BUT some will need to place the 4 unused data bit to ground

Try with this snippet and let us know.

DEFINE OSC 4 ' Using 4 MHZ crystal
DEFINE LCD_LINES 4 ' Using a 4 lines LCD

pause 1000 ' wait LCD start-up delay 
           ' 
           ' P.S.: it can be higher or lower depending of
           '       the model you're using
           
Start:
      lcdout $fe,  1,"Line 1",_
             $fe,$c0,"Line 2",_
             $fe,$94,"Line 3",_
             $fe,$d4,"Line 4"
Here:
     goto here

this one should work.