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PWM voi pic 16f877a
Cac bac cho em hoi:
Em lap trinh dung chan ccp1 de tao xung PWM nhung khong hieu sao em mo phong va do tin hieu o chan PWM khong thay gi,mong cac bac chi giup.Day la code cua chuong trinh:
/////////////////////////////////////
#include <16f877A.h>
#fuses HS,NOWDT,NOPROTECT,NOLVP
#use delay(clock=20000000)
#byte porta=0x05
#use fast_io(a)
#use fast_io(c)
void main()
{
set_tris_a(0x00);
set_tris_c(0x00);
SETUP_CCP1(ccp_pwm);
SETUP_TIMER_2(T2_DIV_BY_4,200,1);
set_pwm1_duty(100);
while(1)
{
output_high(pin_a0);
delay_ms(10);
output_low(pin_a0);
delay_ms(10);
}
}
Em gui kem ca file mo phong.
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