Can anyone help me with PIC18f4520 programming error?

[olaf123]

I am trying to run a program on PIC18F4520 using PicKit3 & MPLAB IDE. But I am getting an error: PK3Err0040: The target device is not ready for debugging. Please check your configuration bit settings and program the device before proceeding.

Whereas when I try to run one of the old program, its running. My new program code which is not running is:

#pragma config OSC = HS,FCMEN = OFF,IESO = OFF              // CONFIG1H
#pragma config PWRT = OFF, BOREN = SBORDIS, BORV = 0                       // CONFIG2L
#pragma config WDT= OFF, WDTPS = 32768                                    // CONFIG2H
#pragma config MCLRE = OFF, LPT1OSC = OFF, PBADEN = ON, CCP2MX = PORTC       //CONFIG3H
#pragma config STVREN = ON, LVP = OFF, XINST = OFF                // CONFIG4L
#pragma config CP0 = OFF, CP1 = OFF, CP2 = OFF, CP3 = OFF                   // CONFIG5L
#pragma config CPB = OFF, CPD = OFF                                         // CONFIG5H
#pragma config WRT0 = OFF, WRT1 = OFF, WRT2 = OFF, WRT3 = OFF                // CONFIG6L
#pragma config WRTB = OFF, WRTC = OFF, WRTD = OFF                            // CONFIG6H
#pragma config EBTR0 = OFF, EBTR1 = OFF, EBTR2 = OFF, EBTR3 = OFF           // CONFIG7L
#pragma config EBTRB = ON                                                  // CONFIG7H


#include "p18f4520.h"
#include "delays.h"


void main(void)
{
TRISA=0b11111111;
TRISB=0b11111111;
TRISC=0b11111111;
TRISD=0b00000000;
TRISE=0x11111111;

while(1)
    {
     Delay10KTCYx(200);
     LATDbits.LATD3=1 ;
     LATDbits.LATD2=1 ;
     LATDbits.LATD1=1 ;
    }

}

Please let me know where the issue is? is it something to do with bootloader?

 

[ac9ts]

I believe you need to enable debugging in CONFIG4L (clear bit 7).

 

[Toley]

First of all this is not the best forum to ask a microcontroller question. But If your PIC have a bootloader you cannot rewrite the config bits and debug it. And if you use a pickit3 to reprogram it, then you will erase the bootloader.

 

[JordiCP]

I believe you need to enable debugging in CONFIG4L (clear bit 7).

I would also try that. I have unzipped an old project which I made with the 18F26K22, using pickit3 and MPLAB, but CCS C compiler which has a different syntax for the fuses. Anyway, the DEBUG option was also set

  #fuses INTRC_IO,DEBUG,NOPLLEN,PRIMARY,NOFCMEN,NOIESO,NOCPD,NOPUT,NOBROWNOUT,NOWDT,NOPROTECT,NOLVP,NOCPB,NOWRT,NOPBADEN,NOMCLR

Also, in your code...is this right?

void main(void)
{
   TRISA=0b11111111;
   TRISB=0b11111111;
   TRISC=0b11111111;
   TRISD=0b00000000;
   TRISE=0x11111111; // <--------'x' ????? 
...

 

[ac9ts]

Probably being interpreted by the compiler as 0b00010001 DOH!