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SamGibson ♦
SamGibson ♦
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Using Driving LCD using PIC18LF27K42

I am struggling to drive aan LCD with a PIC18LF27K42. The

The functions are all okOK. They are working fine with a PIC18F14K50 with the same clock of 4Mhz4MHz. I am suspecting

I suspect the error fromis in my configuration bits. I did review it without success. Thanks

Thanks for your help

I am using the following pin

define ENL LATCbits.LATC7 (OUT)

define RW LATCbits.LATC6 (OUT)

define RS LATCbits.LATC5 (OUT)

define DB7 LATAbits.LATA3 (OUT)

define DB6 LATAbits.LATA2 (OUT)

define DB5 LATAbits.LATA1 (out) definitions:

define DB4 LATAbits.LATA0 (out)

define ENL      LATCbits.LATC7 (OUT)

define RW       LATCbits.LATC6 (OUT)

define RS       LATCbits.LATC5 (OUT)

define DB7      LATAbits.LATA3 (OUT)

define DB6      LATAbits.LATA2 (OUT)

define DB5      LATAbits.LATA1 (out)

define DB4      LATAbits.LATA0 (out)

Before running the main() imain() I am doing the following initialization:

CONFIGURATION BITS

// CONFIG 1L

#pragma config FEXTOSC = HS

#pragma config RSTOSC = EXTOSC

// CONFIG 1H

#pragma config CLKOUTEN= OFF

#pragma config PR1WAY = ON

#pragma config CSWEN = OFF

#pragma config FCMEN = ON

// CONFIG 2L

#pragma config MCLRE = EXTMCLR

#pragma config PWRTS = PWRT_OFF

#pragma config MVECEN = OFF

#pragma config IVT1WAY = OFF

#pragma config LPBOREN = OFF

#pragma config BOREN = OFF

// CONFIG 2H

#pragma config BORV = VBOR_2P45

#pragma config ZCD = OFF

#pragma config PPS1WAY = OFF

#pragma config STVREN = ON

#pragma config DEBUG = OFF

#pragma config XINST = OFF

// CONFIG 3L

#pragma config WDTCPS = WDTCPS_31

#pragma config WDTE = OFF

// CONFIG 3H

#pragma config WDTCWS = WDTCWS_0

#pragma config WDTCCS = LFINTOSC

// CONFIG 4L

#pragma config BBSIZE = BBSIZE_512

#pragma config BBEN = OFF

#pragma config SAFEN = OFF

#pragma config WRTAPP = OFF

// CONFIG 4H

#pragma config WRTB = OFF

#pragma config WRTC = OFF

#pragma config WRTD = OFF

#pragma config WRTSAF = OFF

#pragma config LVP = ON

// CONFIG 5L

#pragma config CP = OFF

// CONFIG 1L

 #pragma  config  FEXTOSC = HS

 #pragma  config  RSTOSC  = EXTOSC
  
 // CONFIG 1H

 #pragma  config  CLKOUTEN= OFF

 #pragma  config  PR1WAY  = ON

 #pragma  config  CSWEN   = OFF

 #pragma  config  FCMEN   = ON

 
// CONFIG 2L

 #pragma  config  MCLRE   = EXTMCLR

 #pragma  config  PWRTS   = PWRT_OFF

 #pragma  config  MVECEN  = OFF

 #pragma  config  IVT1WAY = OFF

 #pragma  config  LPBOREN = OFF

 #pragma  config  BOREN   = OFF
  
 // CONFIG 2H

 #pragma  config  BORV    = VBOR_2P45

 #pragma  config  ZCD     = OFF      

 #pragma  config  PPS1WAY = OFF

 #pragma  config  STVREN  = ON

 #pragma  config  DEBUG   = OFF

 #pragma  config  XINST   = OFF
  
 // CONFIG 3L

 #pragma  config  WDTCPS  = WDTCPS_31

 #pragma  config  WDTE    = OFF
  
 // CONFIG 3H

 #pragma  config  WDTCWS  = WDTCWS_0

 #pragma  config  WDTCCS  = LFINTOSC
  
 // CONFIG 4L 

 #pragma  config  BBSIZE  = BBSIZE_512

 #pragma  config  BBEN    = OFF

 #pragma  config  SAFEN   = OFF

 #pragma  config  WRTAPP  = OFF
  
 // CONFIG 4H

 #pragma  config  WRTB    = OFF

 #pragma  config  WRTC    = OFF

 #pragma  config  WRTD    = OFF

 #pragma  config  WRTSAF  = OFF

 #pragma  config  LVP     = ON
  
 // CONFIG 5L

 #pragma  config    CP      = OFF

Using PIC18LF27K42

I am struggling to drive a LCD with a PIC18LF27K42. The functions are all ok. They are working fine with a PIC18F14K50 with the same clock of 4Mhz. I am suspecting the error from my configuration bits. I did review it without success. Thanks for your help

I am using the following pin

define ENL LATCbits.LATC7 (OUT)

define RW LATCbits.LATC6 (OUT)

define RS LATCbits.LATC5 (OUT)

define DB7 LATAbits.LATA3 (OUT)

define DB6 LATAbits.LATA2 (OUT)

define DB5 LATAbits.LATA1 (out)

define DB4 LATAbits.LATA0 (out)

Before running the main() i am doing the following initialization

CONFIGURATION BITS

// CONFIG 1L

#pragma config FEXTOSC = HS

#pragma config RSTOSC = EXTOSC

// CONFIG 1H

#pragma config CLKOUTEN= OFF

#pragma config PR1WAY = ON

#pragma config CSWEN = OFF

#pragma config FCMEN = ON

// CONFIG 2L

#pragma config MCLRE = EXTMCLR

#pragma config PWRTS = PWRT_OFF

#pragma config MVECEN = OFF

#pragma config IVT1WAY = OFF

#pragma config LPBOREN = OFF

#pragma config BOREN = OFF

// CONFIG 2H

#pragma config BORV = VBOR_2P45

#pragma config ZCD = OFF

#pragma config PPS1WAY = OFF

#pragma config STVREN = ON

#pragma config DEBUG = OFF

#pragma config XINST = OFF

// CONFIG 3L

#pragma config WDTCPS = WDTCPS_31

#pragma config WDTE = OFF

// CONFIG 3H

#pragma config WDTCWS = WDTCWS_0

#pragma config WDTCCS = LFINTOSC

// CONFIG 4L

#pragma config BBSIZE = BBSIZE_512

#pragma config BBEN = OFF

#pragma config SAFEN = OFF

#pragma config WRTAPP = OFF

// CONFIG 4H

#pragma config WRTB = OFF

#pragma config WRTC = OFF

#pragma config WRTD = OFF

#pragma config WRTSAF = OFF

#pragma config LVP = ON

// CONFIG 5L

#pragma config CP = OFF

Driving LCD using PIC18LF27K42

I am struggling to drive an LCD with a PIC18LF27K42.

The functions are all OK. They are working fine with a PIC18F14K50 with the same clock of 4MHz.

I suspect the error is in my configuration bits. I did review it without success.

Thanks for your help

I am using the following pin definitions:

define ENL      LATCbits.LATC7 (OUT)

define RW       LATCbits.LATC6 (OUT)

define RS       LATCbits.LATC5 (OUT)

define DB7      LATAbits.LATA3 (OUT)

define DB6      LATAbits.LATA2 (OUT)

define DB5      LATAbits.LATA1 (out)

define DB4      LATAbits.LATA0 (out)

Before running the main() I am doing the following initialization:

CONFIGURATION BITS

// CONFIG 1L

 #pragma  config  FEXTOSC = HS

 #pragma  config  RSTOSC  = EXTOSC
  
 // CONFIG 1H

 #pragma  config  CLKOUTEN= OFF

 #pragma  config  PR1WAY  = ON

 #pragma  config  CSWEN   = OFF

 #pragma  config  FCMEN   = ON

 
// CONFIG 2L

 #pragma  config  MCLRE   = EXTMCLR

 #pragma  config  PWRTS   = PWRT_OFF

 #pragma  config  MVECEN  = OFF

 #pragma  config  IVT1WAY = OFF

 #pragma  config  LPBOREN = OFF

 #pragma  config  BOREN   = OFF
  
 // CONFIG 2H

 #pragma  config  BORV    = VBOR_2P45

 #pragma  config  ZCD     = OFF      

 #pragma  config  PPS1WAY = OFF

 #pragma  config  STVREN  = ON

 #pragma  config  DEBUG   = OFF

 #pragma  config  XINST   = OFF
  
 // CONFIG 3L

 #pragma  config  WDTCPS  = WDTCPS_31

 #pragma  config  WDTE    = OFF
  
 // CONFIG 3H

 #pragma  config  WDTCWS  = WDTCWS_0

 #pragma  config  WDTCCS  = LFINTOSC
  
 // CONFIG 4L 

 #pragma  config  BBSIZE  = BBSIZE_512

 #pragma  config  BBEN    = OFF

 #pragma  config  SAFEN   = OFF

 #pragma  config  WRTAPP  = OFF
  
 // CONFIG 4H

 #pragma  config  WRTB    = OFF

 #pragma  config  WRTC    = OFF

 #pragma  config  WRTD    = OFF

 #pragma  config  WRTSAF  = OFF

 #pragma  config  LVP     = ON
  
 // CONFIG 5L

 #pragma  config    CP      = OFF
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Using PIC18LF27K42

I am struggling to drive a LCD with a PIC18LF27K42. The functions are all ok. They are working fine with a PIC18F14K50 with the same clock of 4Mhz. I am suspecting the error from my configuration bits. I did review it without success. Thanks for your help

I am using the following pin

define ENL LATCbits.LATC7 (OUT)

define RW LATCbits.LATC6 (OUT)

define RS LATCbits.LATC5 (OUT)

define DB7 LATAbits.LATA3 (OUT)

define DB6 LATAbits.LATA2 (OUT)

define DB5 LATAbits.LATA1 (out)

define DB4 LATAbits.LATA0 (out)

Before running the main() i am doing the following initialization

PORTA   = 0x00;
LATA    = 0x00;
ANSELA  = 0x00;
TRISA   = 0xF0;
PORTB   = 0x00;
LATB    = 0x00;
ANSELB  = 0x00;
TRISB   = 0x1F;
PORTC   = 0x00;
LATC    = 0x00;
ANSELC  = 0x00;
TRISC   = 0x1F;

CONFIGURATION BITS

// CONFIG 1L

#pragma config FEXTOSC = HS

#pragma config RSTOSC = EXTOSC

// CONFIG 1H

#pragma config CLKOUTEN= OFF

#pragma config PR1WAY = ON

#pragma config CSWEN = OFF

#pragma config FCMEN = ON

// CONFIG 2L

#pragma config MCLRE = EXTMCLR

#pragma config PWRTS = PWRT_OFF

#pragma config MVECEN = OFF

#pragma config IVT1WAY = OFF

#pragma config LPBOREN = OFF

#pragma config BOREN = OFF

// CONFIG 2H

#pragma config BORV = VBOR_2P45

#pragma config ZCD = OFF

#pragma config PPS1WAY = OFF

#pragma config STVREN = ON

#pragma config DEBUG = OFF

#pragma config XINST = OFF

// CONFIG 3L

#pragma config WDTCPS = WDTCPS_31

#pragma config WDTE = OFF

// CONFIG 3H

#pragma config WDTCWS = WDTCWS_0

#pragma config WDTCCS = LFINTOSC

// CONFIG 4L

#pragma config BBSIZE = BBSIZE_512

#pragma config BBEN = OFF

#pragma config SAFEN = OFF

#pragma config WRTAPP = OFF

// CONFIG 4H

#pragma config WRTB = OFF

#pragma config WRTC = OFF

#pragma config WRTD = OFF

#pragma config WRTSAF = OFF

#pragma config LVP = ON

// CONFIG 5L

#pragma config CP = OFF