[Icc-avr] pwm using ATmega48

[Haojiong Zhang]

Hi,

I tried the following code to genearte pwm on PD5(OC0B) and PD6(OC0A), but
it doesn't work. The pins never change status when compare matching happens.
Anything wrong?

 DDRD |= (1<<PD5)|(1<<PD6);
OCR0A = 0xAF;
TCCR0A = ( 1  << COM0A1) | (0 << COM0A0) | (1 << COM0B1) | (0 << COM0B0) |
(0 << WGM01) | (1 << WGM00);
TCCR0B = (1 << WGM02) | (0 << CS12) | (0 << CS11) | (1 << CS10);
OCR0A = 0xFF;
TIMSK0 = (0<<TOIE0);



best regards,

Haojiong Zhang
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