LCD problem with 16F628

[ngeronikolos]

Thanks Thanks....Thanks Melanie,

I do not have words to thank you...

I will try it and I will inform you.

[CuriousOne]

Bumping an 10 year old tread....

I also have problems with 16F628A and 1602 LCD

PCON=%00001011 'set intosc to 4mhz
DEFINE OSC 4
DEFINE LCD_DREG PORTB
DEFINE LCD_DBIT 0
DEFINE LCD_RSREG PORTB
DEFINE LCD_RSBIT 4
DEFINE LCD_EREG PORTB
DEFINE LCD_EBIT 5
DEFINE LCD_BITS 4 
DEFINE LCD_LINES 2
DEFINE LCD_COMMANDUS 1500
DEFINE LCD_DATAUS 44 
pause 500

LCDOUT $FE, "SACDELI   "
PAUSE 5000
END

PORTB.0 - PORTB.1 are connected to D4-D7 pins of LCD
PORTB.5 is connected to RS pin
PORTB.6 is connected to E pin.

All hardware 100% verified and working. But still no display.

[HenrikOlsson]

Your code says RS is PortB.4 while you say it's PortB.5.
Your code says E us PortB.5 while you say it's PortB.6.

/Henrik.

[CuriousOne]

Thanks, fixed that, but still does not works...

[mehmetOzdemir]

can you share your config settings?

[CuriousOne]

;----[16F628A Hardware Configuration]-------------------------------------------
#IF __PROCESSOR__ = "16F628A"
  #DEFINE MCU_FOUND 1
#CONFIG
cfg = _INTOSC_OSC_NOCLKOUT    ; INTOSC oscillator: I/O function on RA6/OSC2/CLKOUT pin, I/O function on RA7/OSC1/CLKIN
cfg&= _WDT_ON                 ; WDT enabled
cfg&= _PWRTE_OFF              ; PWRT disabled
cfg&= _MCLRE_OFF              ; RA5/MCLR/VPP pin function is digital input, MCLR internally tied to VDD
cfg&= _BODEN_ON               ; BOD enabled
cfg&= _LVP_OFF                ; RB4/PGM pin has digital I/O function, HV on MCLR must be used for programming
cfg&= DATA_CP_OFF             ; Data memory code protection off
cfg&= _CP_OFF                 ; Code protection off
  __CONFIG cfg

#ENDCONFIG

#ENDIF

;----[Verify Configs have been specified for Selected Processor]----------------
;       Note: Only include this routine once, after all #CONFIG blocks
#IFNDEF MCU_FOUND
  #ERROR "No CONFIGs found for [" + __PROCESSOR__ +"]"
#ENDIF

Include "Modedefs.bas"
PCON=%00001011 'set intosc to 4mhz
DEFINE OSC 4
DEFINE LCD_DREG PORTB
DEFINE LCD_DBIT 0
DEFINE LCD_RSREG PORTB
DEFINE LCD_RSBIT 4
DEFINE LCD_EREG PORTB
DEFINE LCD_EBIT 5
DEFINE LCD_BITS 4 
DEFINE LCD_LINES 2
DEFINE LCD_COMMANDUS 1500
DEFINE LCD_DATAUS 44 
pause 500

LCDOUT $FE, "SACDELI   "
PAUSE 5000
END

[richard]

not suprised , it's certainly an odd use of the lcdout 254 directive