#include <18F452.h>
//////// Fuses: LP,XT,HS,RC,EC,EC_IO,H4,RC_IO,PROTECT,NOPROTECT,OSCSEN
//////// Fuses: NOOSCSEN,NOBROWNOUT,BROWNOUT,WDT1,WDT2,WDT4,WDT8,WDT16,WDT32
//////// Fuses: WDT64,WDT128,WDT,NOWDT,BORV20,BORV27,BORV42,BORV45,PUT,NOPUT
//////// Fuses: CCP2C1,CCP2B3,NOSTVREN,STVREN,NODEBUG,DEBUG,NOLVP,LVP,WRT
//////// Fuses: NOWRT,NOWRTD,WRTD,NOWRTB,WRTB,WRTC,NOWRTC,CPD,NOCPD,CPB
//////// Fuses: NOCPB,EBTR,NOEBTR,EBTRB,NOEBTRB
#FUSES NOWDT //No Watch Dog Timer
#FUSES HS //High speed Osc (> 4mhz for PCM/PCH) (>10mhz for PCD)
#FUSES NOPUT //No Power Up Timer
#FUSES NOPROTECT //Code not protected from reading
#FUSES NODEBUG //No Debug mode for ICD
#FUSES NOBROWNOUT //No brownout reset
#FUSES NOLVP //No low voltage prgming, B3(PIC16) or B5(PIC18) used for I/O
#FUSES NOCPD //No EE protection
#FUSES NOWRT //Program memory not write protected
#FUSES NOOSCSEN
#FUSES NOPUT
#FUSES CCP2C1
#FUSES NOSTVREN
#FUSES NODEBUG
#FUSES NOWRTD
#FUSES NOWRTB
#FUSES NOWRTC
#FUSES NOCPB
#FUSES NOEBTR
#FUSES NOEBTRB
#use delay(clock = 20000000)
#use rs232 (baud=9600,xmit=PIN_C6,rcv=PIN_C7)
unsigned int16 seconds = 0;
#INT_RTCC //Interrupt procedure
clock_isr() { //called every time RTCC
set_timer0(19531);
++seconds; //Inc SECONDS counter every
//76 times to keep time
}
void main() { //a simple stopwatch program
setup_timer_0(RTCC_INTERNAL | RTCC_DIV_256 );
set_timer0(19531);
enable_interrupts(INT_RTCC);
enable_interrupts(GLOBAL);
do {
delay_ms(1000);
printf("%lu seconds \n\r", seconds
); } while (TRUE);
}