Bộ so sánh và PWM cho PIC16F877A

[mini_2440]

#include <16F877.h>
#INCLUDE<def_877a.h>
#fuses HS,NOWDT,NOPROTECT,NOLVP /// sửa lại chỗ này nhé
//////////// #fuses XT,NOWDT,NOPROTECT,NOLVP
#use delay(clock=4000000)
#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7)

int16 pulse;

#int_ccp1
void isr()
{

if (!bit_test(PORTB,0)){
output_high(PIN_b0);
}
else{
output_low(PIN_B0);}
CCP_1+=1000;
}



void main()
{
CHAR VALUE;
setup_timer_1(T1_INTERNAL|T1_DIV_BY_1);
setup_ccp1(CCP_COMPARE_INT);
enable_interrupts(INT_CCP1);
enable_interrupts(GLOBAL);


pulse = 1000;
TRISB = 0;
PORTB = 0;
CCP_1 = PULSE;

set_timer1(0);

while(true);
}