ArdyNT
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I need to dim three ac lamps and i decide to use timer0 tmer1 and timer2. I use the principle of phase firing angle and I want the lamps have different intensity. Now I don't understand why this code in timer0 and timer2 overflow is not working.
And this code in timer1 compare is working very well
Help me please
Code:
interrupt [EXT_INT0] void ext_int0_isr(void)
{
// Activate Timer0 with prescaler 1024
TCCR0=0x05;
}
// Timer 0 overflow interrupt service routine
interrupt [TIM0_OVF] void timer0_ovf_isr(void)
{
if(ldr1>=700)
{
if(TCNT0>=250)
{
TCNT0=TCNT0+5;
}
}
if(ldr1<=600)
{
if(TCNT0<=155)
{
TCNT0=TCNT0-5;
}
}
PORTD.0 = 0;
delay_us(30);
PORTD.0 = 1;
TCCR0=0x00;
}And this code in timer1 compare is working very well
Code:
interrupt [EXT_INT0] void ext_int0_isr(void)
{
// Activate Timer1 with prescaler 8
TCCR0=0x02;
}
interrupt [TIM1_COMPA] void timer1_compa_isr(void)
{
if(ldr2<=600)
{
if(OCR1A>=150)
{
OCR1A=OCR1A-100;
}
}
if(ldr2>=700)
{
if(OCR1A<=13500)
{
OCR1A=OCR1A+100;
}
}
TCNT1H=0x00;
TCNT1L=0x00;
PORTB.1 = 0;
delay_us(50);
PORTB.1 = 1;
TCCR1B=0x00;
}Help me please