define lcd

[chip_1]

Hi all,
here show my code for 16F877A.


Pic 16f877a pin connect to LCD 16x2:

portb.0 DATA
portb.1
portb.2
portb.3

portd.0 RS
portd.3 E
rw GND


-------------------------
DEFINE LCD__DREG PORTB
DEFINE LCD_DBIT 0
DEFINE LCD_RSREG PORTD
DEFINE LCD_RSBIT 0
DEFINE LCD_EREG PORTD
DEFINE LCD_EBIT 3
DEFINE LCD_BITS 4
DEFINE LCD_LINES 2
DEFINE COMMANDUS 2000
DEFINE LCD_DATAUS 50

pause 1000

lcdout $fe,1, "HELLO"
lcdout $fe,$C0,"WORLD"
end
--------------------------------

but not work. Why?

THX
chip_

[nimonia]

add this

DEFINE OSC <ur osc>

i.e:

DEFINE OSC 20 'for 20 Mhz

and this line:

ADCON1 = 7 ' fidn out more here http://www.melabs.com/support/ ' mcu_hints.htm

[Melanie]

DEFINE LCD__DREG PORTB <<---- The underscore doesn't look right...
DEFINE LCD_DBIT 0
DEFINE LCD_RSREG PORTD
DEFINE LCD_RSBIT 0

Double-check your DEFINEs... if you have a spelling or other typo the compiler will NOT flag any error in your DEFINE lines - your program will just not work as expected.

[chip_1]

THANK YOU!!!

for Melanie smack.

by
chip_