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#include <xc.h> #include <stdint.h> // CONFIG #pragma config FOSC = XT // Oscillator Selection bits (XT oscillator) #pragma config WDTE = OFF // Watchdog Timer Enable bit (WDT disabled) #pragma config PWRTE = OFF // Power-up Timer Enable bit (PWRT disabled) #pragma config BOREN = ON // Brown-out Reset Enable bit (BOR enabled) #pragma config LVP = OFF // Low-Voltage (Single-Supply) In-Circuit Serial Programming Enable bit (RB3 is digital I/O, HV on MCLR must be used for programming) #pragma config CPD = OFF // Data EEPROM Memory Code Protection bit (Data EEPROM code protection off) #pragma config WRT = OFF // Flash Program Memory Write Enable bits (Write protection off; all program memory may be written to by EECON control) #pragma config CP = OFF // Flash Program Memory Code Protection bit (Code protection off) // Frequency settings for 1Hz square wave #define _XTAL_FREQ 4000000 // Assuming 4MHz crystal oscillator #define TIMER1_PRESCALE 1 #define COMPARE_VALUE ((_XTAL_FREQ / (4 * TIMER1_PRESCALE)) - 1) // Calculation for 1 second
