Help! use PBP246 for PIC18F2525

[dragon]

Thanks,try once more, if failed I will post the test code.

[dragon]

DEFINE OSC 8
DEFINE LCD_DREG PORTA

DEFINE LCD_DBIT 0
DEFINE LCD_EREG PORTA
DEFINE LCD_EBIT 4
DEFINE LCD_RSREG PORTA
DEFINE LCD_RSBIT 5
DEFINE LCD_BITS 4
DEFINE LCD_LINES 2
DEFINE LCD_COMMANDUS 4000
DEFINE LCD_DATAUS 100

CMCON = 7
ADCON1 = 6
TRISA = %11000000


PAUSE 5000

loop:
Lcdout $fe, 1 ' Clear LCD screen
Lcdout "Hello" ' Display Hello
Pause 1000 ' Wait .5 second

Lcdout $fe, 1 ' Clear LCD screen
Lcdout "World"
Pause 1000 ' Wait .5 second


Goto loop ' Do it forever


End

[dragon]

it doesn't work! please help! thanks

DEFINE OSC 8
DEFINE LCD_DREG PORTA

DEFINE LCD_DBIT 0
DEFINE LCD_EREG PORTA
DEFINE LCD_EBIT 4
DEFINE LCD_RSREG PORTA
DEFINE LCD_RSBIT 5
DEFINE LCD_BITS 4
DEFINE LCD_LINES 2
DEFINE LCD_COMMANDUS 4000
DEFINE LCD_DATAUS 100

CMCON = 7
ADCON1 = 6
TRISA = %11000000


PAUSE 5000

loop:
Lcdout $fe, 1 ' Clear LCD screen
Lcdout "Hello" ' Display Hello
Pause 1000 ' Wait .5 second

Lcdout $fe, 1 ' Clear LCD screen
Lcdout "World"
Pause 1000 ' Wait .5 second


Goto loop ' Do it forever


End

[skimask]

We have studied the PBP246 & PIC18F2525 for a long time,but no advance.

Then study more you must...
In your case...

Port A, Bit 0-3 = data bits for LCD
Port A, bit 4 = e for LCD
Port A, bit 5 = rs for LCD

ADCON1 = 6
According to the datasheet I've got...
You've set up: ADCON1 = %0000110
Vref+/Vref- on Vdd/Vss...
AN9-AN12 = digital, AN8-AN0 = analog...

Do ya see any important information up there?

Page 224 of Microchip datasheet DS39626D...

[dragon]

CMCON should be defined correct value.

[dragon]

Skimask,Thank you very much for kindly explaination.