sleepblinky.c

#include <xc.h>

#pragma config FOSC = INTOSC    // Oscillator Selection bits->INTOSC oscillator: CLKIN function disabled
#pragma config BOREN = ON    // Brown-out Reset Enable->Brown-out Reset enabled
#pragma config WDTE = ON    // Watchdog Timer Enable->WDT enabled
#pragma config PWRTE = OFF    // Power-up Timer Enable bit->PWRT disabled
#pragma config MCLRE = ON    // MCLR Pin Function Select bit->MCLR pin function is MCLR
#pragma config CP = OFF    // Code Protection bit->Program memory code protection is disabled
#pragma config LVP = ON    // Low-Voltage Programming Enable->Low-voltage programming enabled
#pragma config LPBOR = ON    // Brown-out Reset Selection bits->BOR enabled
#pragma config BORV = LO    // Brown-out Reset Voltage Selection->Brown-out Reset Voltage (Vbor), low trip point selected.
#pragma config WRT = OFF    // Flash Memory Self-Write Protection->Write protection off


void main(void)
{
    TRISA = 0x03;
    ANSELA = 0x07;
     // LFIOFR 31.25KHz_osc_not_ready; HFIOFS unstable; HFIOFR 16MHz_osc_not_ready; IRCF 500KHz; 
    OSCCON = 0x20;
    // WDTPS 1:16384; SWDTEN OFF; 
    WDTCON = 0x12;
    while (1)
    {
        LATAbits.LATA2 = ~LATAbits.LATA2;
        SLEEP();
    }
}