Picproje Elektronik Sitesi

#include <xc.h>
#pragma config FOSC = XT  // Oscillator Selection bits (INTRC oscillator; port I/O function on both RA6/OSC2/CLKO pin and RA7/OSC1/CLKI pin)
#pragma config WDTE = OFF        // Watchdog Timer Enable bit (WDT disabled)
#pragma config PWRTE = OFF      // Power-up Timer Enable bit (PWRT disabled)
#pragma config MCLRE = OFF      // RA5/MCLR/VPP Pin Function Select bit (RA5/MCLR/VPP pin function is digital I/O, MCLR internally tied to VDD)
#pragma config BOREN = OFF      // Brown-out Reset Enable bit (BOR disabled)
#pragma config LVP = OFF        // Low-Voltage Programming Enable bit (RB3 is digital I/O, HV on MCLR must be used for programming)
#pragma config CPD = OFF        // Data EE Memory Code Protection bit (Code protection off)
#pragma config WRT = OFF        // Flash Program Memory Write Enable bits (Write protection off)
#pragma config CCPMX = RB0      // CCP1 Pin Selection bit (CCP1 function on RB0)
#pragma config CP = OFF         // Flash Program Memory Code Protection bit (Code protection off)
#pragma config FCMEN = OFF       // Fail-Safe Clock Monitor Enable bit (Fail-Safe Clock Monitor enabled)
#pragma config IESO = OFF       // Internal External Switchover bit (Internal External Switchover mode disabled)

#define _XTAL_FREQ 4000000

void main (void) {
    ANSEL=0x00;     //
    TRISB=0x01;     //
    PORTB=0x00;
    PSA=1;          //Prescaler is assigned to the WDT
    PS0=1;          //PS Rate 1:128
    PS1=1;
    PS2=1;
    WDTPS0=0;       // WDTPS Rate 1:512
    WDTPS1=0;
    WDTPS2=1;
    WDTPS3=0;
    SWDTEN=1;
    while (1) {
        RB1=~RB1;
        while(RB0==0) {
            CLRWDT();
        }
        SLEEP();
    }
}

:040000008A11FD2F35
:100FB800831603139B0101308600831203138601F5
:100FC8008316031381150114811401158312031765
:100FD80085100511851505120514023083120313B7
:100FE8008606831203130618FB2F6400F52F63008F
:080FF800F12F83018A11DC2FA7
:04400E0009FFFCFFAB
:00000001FF

;>>>>>>>>>>>>>>>>>>>>  MAIN PROGRAM STARTS FROM HERE >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

CALL CHIP_ERASE_1







;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;,BULK ERASE PROGRAM MEMORY;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
ENTER_HV_PROG        ;PC=0000H
                                        GOTO JUMP0

LOAD_PROG_MEM        ; BULK ERASE PROGRAM MEMORY ALGORITHM WORKS WELL BUT I HAVE JUMPED TO TEST CHIP ERASE
WRITE3FFF
BULK_ER_PROG_MEM
BEG_ER_PROG_CYCLE

CALL  DELAY8MS

EXIT_HV_PROG
ENTER_HV_PROG
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;BULK ERASE FINISHED;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;,
                                        JUMP0  NOP

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;WRITING CONFIGURATION MEMORY AND ID WORDS;;;;;;;;;;;;;;;;;;;;;;;;;

ENTER_HV_PROG                 ;THIS ALGORITHM WORKS FOR NOT PROTECTED CHIP VERY WELL

LOADCONFIG         ;PC=2000H
WRITE3FFF          

LOAD_PROG_MEM       ;1
WRITE3FFF
INC_ADRS
LOAD_PROG_MEM       ;2
WRITE3FFF
INC_ADRS
LOAD_PROG_MEM       ;3
WRITE3FFF
INC_ADRS
LOAD_PROG_MEM       ;4
WRITE3FFF
BEGIN_PROG_ONLY     ;IT IS WORKING WITH ALSO   BEG_ER_PROG_CYCLE COMMAND
CALL  DELAY8MS      ;


END_PROG
INC_ADRS
INC_ADRS
INC_ADRS
INC_ADRS
LOAD_PROG_MEM
WRITE_CONFIG_DATA
BEG_ER_PROG_CYCLE  ;

CALL  DELAY8MS   

EXIT_HV_PROG
ENTER_HV_PROG

;<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<WRITING CONFIGURATION MEMORY FINISHED<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

ENTER_HV_PROG    MACRO       ;
CLRF           PORTC         ;PGD=0V PGC=0V 
BSF            PORTB,0       ;MCLR= 0V ;**  IN CASE IF IT GETS ANY POWER
BSF            PORTB,1       ;VDD=5V
BCF            PORTB,0       ;MCLR=13V
NOP
NOP
NOP                          ;5 US DELAY
NOP
NOP
ENDM


EXIT_HV_PROG    MACRO
BCF       PORTB,1
BSF          PORTB,0
ENDM