what is the problem vith pic or LCD...


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  1. #1
    Join Date
    Mar 2006
    Location
    Ankara -Turkey
    Posts
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    Default what is the problem vith pic or LCD...

    Hi every one.
    I finished below project for counting. Define as folows.But not work.
    I use Pic 18F4520 4 MGZ osc.

    please look at attachment for LCD wiring



    'Define LCD connections
    Define LCD_DREG PORTD
    Define LCD_DBIT 4
    Define LCD_RSREG PORTD
    Define LCD_RSBIT 0
    Define LCD_EREG PORTD
    Define LCD_EBIT 1
    DEFINE LCD_BITS 4
    DEFINE LCD_LINES 4
    DEFINE LCD_RWREG PORTE
    DEFINE LCD_RWBIT 2
    ........
    ..........
    giris:
    LCDOUT $FE,1,"::::: drft :::::"
    LCDOUT $FE,$C0,"adsert "
    LCDOUT $FE,$94,"dfgtr"
    Pause 500
    LCDOUT $FE,$D4,"...SISTEM HAZIR..."
    SOUND PORTD.2,[100,50,50]
    Pause 500
    low PORTD.2
    ......
    .....
    .....

    any idea?
    Thanks
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  2. #2
    Join Date
    May 2004
    Location
    NW France
    Posts
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    Lightbulb

    Hi,

    Datasheet $ 10.5 ...

    More generally : Where is your processor config sequence ???

    Code:
    '*****************************************************************************
    '*****************************************************************************
    '
    'Defines
    '*****************************************************************************
    
    DEFINE OSC 4
    DEFINE BUTTON_PAUSE 50 
    DEFINE ADC_BITS 10
    
    
    ' Define LCD connections
    
    DEFINE LCD_DREG PORTD   	' Set LCD Data port
    DEFINE LCD_DBIT 4       	' Set starting Data bit (0 or 4) if 4-bit bus
    DEFINE LCD_RSREG PORTD  	' Set LCD Register Select port
    DEFINE LCD_RSBIT 2      	' Set LCD Register Select bit
    DEFINE LCD_EREG PORTD   	' Set LCD Enable port
    DEFINE LCD_EBIT 3      		' Set LCD Enable bit
    DEFINE LCD_BITS 4       	' Set LCD bus size (4 or 8 bits)
    
    
    '*****************************************************************************
    '*****************************************************************************
    'Config processeur
    '*****************************************************************************
    '
    
    '@  __CONFIG    _CONFIG1L, _WDT_OFF_1L & _WDTPS_128_1L
    @   __CONFIG    _CONFIG1H, _OSCS_OFF_1H & _XT_OSC_1H
    @	__CONFIG	_CONFIG2L, _BOR_OFF_2L & _BORV_27_2L & _PWRT_ON_2L
    @   __CONFIG    _CONFIG2H, _WDT_OFF_2H & _WDTPS_128_2H
    '@  __CONFIG    _CONFIG3L, _WDT_OFF_3L & _WDTPS_128_3L
    @   __CONFIG    _CONFIG3H, _CCP2MX_OFF_3H
    @   __CONFIG    _CONFIG4L, _STVR_OFF_4L & _LVP_OFF_4L & _DEBUG_OFF_4L
    '@  __CONFIG    _CONFIG4H, _WDT_ON_4H & _WDTPS_128_4H
    @   __CONFIG    _CONFIG5L, _CP0_OFF_5L & _CP1_OFF_5L & _CP2_OFF_5L & _CP3_OFF_5L
    @   __CONFIG    _CONFIG5H, _CPB_OFF_5H & _CPD_OFF_5H
    @   __CONFIG    _CONFIG6L, _WRT0_OFF_6L & _WRT1_OFF_6L & _WRT2_OFF_6L & _WRT3_OFF_6L
    @   __CONFIG    _CONFIG6H, _WRTC_OFF_6H & _WRTB_OFF_6H & _WRTD_OFF_6H 
    @   __CONFIG    _CONFIG7L, _EBTR0_OFF_7L & _EBTR1_OFF_7L & _EBTR2_OFF_7L & _EBTR3_OFF_7L
    @   __CONFIG    _CONFIG7H, _EBTRB_OFF_7H 
    
    '*****************************************************************************
    'Config TIMERs
    
    T0CON = %00000010	' 16Bits 1/8 prescaler, Horloge Système, OFF
    
    T1CON = %00001010	'1/1 prescaler, Quartz 32,768
    
    T3CON = %01110001	' ccp SUR TMR3,1/8 prescaler,Horloge système,ON
    
    '*****************************************************************************
    'Config CCP1 arret CCP2
    
    CCP1CON = %00000101	' Capture sur front montant 
    
    CCP2CON = %00000000	'inhibition module CCP2
    
    '*****************************************************************************
    'Inhibition SSP
    
    SSPCON1.5 = 0
    
    '*****************************************************************************
    'Config Interruptions
    
    INTCON  = %10000000
    INTCON2 = %11110000
    INTCON3 = %00000000
    
    PIE1    = %00000100
    PIE2    = %00000000
    
    IPR1    = %00000001
    IPR2	= %00000000
    
    RCON	= %10000000
    
    '*****************************************************************************
    'Config ADC
    '*****************************************************************************
    
    ADCON0 = %11000000
    ADCON1 = %10000011
    
    '*****************************************************************************
    '*****************************************************************************
    'Config et Prepositionnement E/S
    '*****************************************************************************
    
    PORTA	= %00000000
    PORTB 	= %00000100
    PORTC	= 0
    PORTD	= 0
    PORTE	= 0
    
    TRISA 	= %00111111
    TRISB	= %11100110
    TRISC	= %00000111
    TRISD	= %00000000
    TRISE	= %00000000
    '
    '*****************************************************************************
    'Alias E/S
    '*****************************************************************************
    
    'MCLR/ sur Broche 1 par R/C/D
    
    Voltage		var PORTA.0		'TENSION Batterie / 4
    TempA		var PORTA.1		'LM335
    TempH		var PORTA.2		'LM335
    Vref		var PORTA.3		'TL431 = 4.096v ...
    Raz		var PORTA.4		'JUMPER Raz/Programmation
    PressH		var PORTA.5		'MPX5700
    
    '		var PORTB.0	
    Contact		var PORTB.1		' + 12 v sous clé ( / 3.3 = 3 - 5 v !!! )
    Selection 	var PORTB.2		'Poussoir sélection Affichage
    '		var PORTB.3
    AlLCD		var PORTB.4		'Alimentation LCD FQU11P6 !!! 0 = ON : 1 = OFF
    '		var PORTB.5
    '		var PORTB.6
    '		var PORTB.7
    
    '		var PORTC.0
    '		var PORTC.1
    Speed		var PORTC.2		'Entrée compte-tours 1C/4T
    Alm		var PORTC.3		'Alarmes
    '		var PORTC.4
    '		var PORTC.5
    '		var PORTC.6
    '		var PORTC.7
    
    Signal		var PORTD.0		'Voyant Survitesse
    Buzzer		var PORTD.1		'Sortie commande Buzzer
    RS		var PORTD.2
    E		var PORTD.3
    D4		var PORTD.4
    D5		var PORTD.5
    D6		var PORTD.6
    D7		var PORTD.7
    
    '		var PORTE.0
    '		var PORTE.1
    AlRef		var PORTE.2
    This is just an example for a 18F452 ... with a 2x16 LCD

    Alain
    Last edited by Acetronics2; - 11th March 2008 at 12:35.
    ************************************************** ***********************
    Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
    ************************************************** ***********************
    IF there is the word "Problem" in your question ...
    certainly the answer is " RTFM " or " RTFDataSheet " !!!
    *****************************************

  3. #3
    Join Date
    Mar 2006
    Location
    Ankara -Turkey
    Posts
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    Default pic lcd

    Thanks for your information. My programer does everting .(config...)

    I find the problem mysel.
    I put a capasitor (47mF) between MCLR and nengative port and problem was dissdlwed.
    Thanks.
    Birbirimize yardım için buradayız.
    We are here to help each other....

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