Need help on LCD

[luminas]

I got my PIC 18F2550 blink an LED, but I cannot write to LCD
LCD is working with other PIC, no hardware issue here
PIC 18F2550, Xtal 10 Mhz

This is my code

DEFINE OSC 10
DEFINE LCD_DREG PORTB     ' LCD data port
DEFINE LCD_DBIT 2         ' LCD data starting bit
DEFINE LCD_RSREG PORTB    ' LCD register select port
DEFINE LCD_RSBIT 0        ' LCD register select bit
DEFINE LCD_EREG PORTB     ' LCD enable port
DEFINE LCD_EBIT 1         ' LCD enable bit
DEFINE LCD_BITS 4         ' LCD data bus size
DEFINE LCD_LINES 2        ' Number lines on LCD
DEFINE LCD_COMMANDUS 2000 ' Command delay time in us
DEFINE LCD_DATAUS 50      ' Data delay time in us

[skimask]

DEFINE LCD_DBIT 2 ' LCD data starting bit

Re-Read your PBP manual concerning LCD_DBIT

[Archangel]

I got my PIC 18F2550 blink an LED, but I cannot write to LCD
LCD is working with other PIC, no hardware issue here
PIC 18F2550, Xtal 10 Mhz

This is my code

ASM
        __CONFIG    _CONFIG1L, _PLLDIV_10_1L & _CPUDIV_OSC1_PLL2_1L & _USBDIV_1_1L
        __CONFIG    _CONFIG1H, _FOSC_HS_1H
        __CONFIG    _CONFIG2L, _PWRT_ON_2L & _BOR_ON_2L & _VREGEN_OFF_2L
        __CONFIG    _CONFIG2H, _WDT_OFF_2H & _WDTPS_512_2H
        __CONFIG    _CONFIG3H, _PBADEN_On_3H & _MCLRE_ON_3H  & _CCP2MX_ON_3H
        __CONFIG    _CONFIG4L, _LVP_OFF_4L & _XINST_OFF_4L  & _DEBUG_OFF_4L
        
ENDASM

DEFINE OSC 10
DEFINE LCD_DREG PORTB     ' LCD data port
DEFINE LCD_DBIT 2         ' LCD data starting bit  <font color=red>not valid</font color>
DEFINE LCD_RSREG PORTB    ' LCD register select port
DEFINE LCD_RSBIT 0        ' LCD register select bit
DEFINE LCD_EREG PORTB     ' LCD enable port
DEFINE LCD_EBIT 1         ' LCD enable bit
DEFINE LCD_BITS 4         ' LCD data bus size
DEFINE LCD_LINES 2        ' Number lines on LCD
DEFINE LCD_COMMANDUS 2000 ' Command delay time in us
DEFINE LCD_DATAUS 50      ' Data delay time in us
clear
porta = 0
portb = 0
portc = 0

TRISA = %00000000               ' Set PORTA to all output
TRISB = %00000000               ' Set PORTB to all output
TRISC = %00000000               ' Set PORTC to all output

main:

LCDOUT $FE, 1  
pause 100

LCDOUT $FE, 1, "Hello "
pause 100


high porta.0
pause 1000
low porta.0
pause 1000
goto main

D bit should be 0 or 4, you cannot use 2 - 5 directly this way, Darrel did do a workaround however . . .
edit: Skimask was quicker on the draw . . .

[luminas]

Thanks for your comments

I changed the dbit to 4 , but nothing come out of the LCD , but LED is blinking
This is my first time working with 18F2550, is there any other mistake I made?

ASM
        __CONFIG    _CONFIG1L, _PLLDIV_10_1L & _CPUDIV_OSC1_PLL2_1L & _USBDIV_1_1L
        __CONFIG    _CONFIG1H, _FOSC_HS_1H
        __CONFIG    _CONFIG2L, _PWRT_ON_2L & _BOR_ON_2L & _VREGEN_OFF_2L
        __CONFIG    _CONFIG2H, _WDT_OFF_2H & _WDTPS_512_2H
        __CONFIG    _CONFIG3H, _PBADEN_OFF_3H & _MCLRE_ON_3H  & _CCP2MX_ON_3H
        __CONFIG    _CONFIG4L, _LVP_OFF_4L & _XINST_OFF_4L  & _DEBUG_OFF_4L
        
ENDASM

DEFINE OSC 10


DEFINE LCD_DREG PORTB     ' LCD data port
DEFINE LCD_DBIT 4         ' LCD data starting bit
DEFINE LCD_RSREG PORTB    ' LCD register select port
DEFINE LCD_RSBIT 0        ' LCD register select bit
DEFINE LCD_EREG PORTB     ' LCD enable port
DEFINE LCD_EBIT 1         ' LCD enable bit
DEFINE LCD_BITS 4         ' LCD data bus size
DEFINE LCD_LINES 2        ' Number lines on LCD
DEFINE LCD_COMMANDUS 1500 ' Command delay time in us
DEFINE LCD_DATAUS 44      ' Data delay time in us
clear
porta = 0
portb = 0
portc = 0

TRISA = %00000000               ' Set PORTA to all output
TRISB = %00000000               ' Set PORTB to all output
TRISC = %00000000               ' Set PORTC to all output


main:
LCDOUT $FE, 1  
pause 100
LCDOUT $FE, 1, "Hello "
pause 100

high porta.0
pause 1000
low porta.0
pause 1000
goto main

[skimask]

Thanks for your comments

I changed the dbit to 4 , but nothing come out of the LCD , but LED is blinking
This is my first time working with 18F2550, is there any other mistake I made?

Change the D-Bit all you want...
If you don't change the wiring that goes with it, it ain't gonna work...

[luminas]

I forgot to change the wiring hahaha......
Now it works Thanks again..... have a nice day

[Archangel]

Change the D-Bit all you want...
If you don't change the wiring that goes with it, it ain't gonna work...

You know, I almost suggested that, but I thought naw, that would be rude . . . DOH!