Programmierung Attiny für L293

void init_timer0(void)

{

   TCCR0A = (1<<COM0A1)|(1<<COM0B1)|(1<<WGM00);

   TCCR0B = (1<<CS00);

   TIMSK &= ~0x3c;

}

void setPWM(uint8_t speed) 

{OCR1BL = speed;}

void Mzur(void)  //Uhrzeigersinn

{PORTB |= (1<<PB1); PORTB &= ~(1<<PB2);}

void Mvor(void)  //mathematischer Drehsinn

{PORTB &= ~(1<<PB1); PORTB |= (1<<PB2);}

void Mstop(void)  //aus

{ PORTB &= ~(1<<PB1); PORTB &= ~(1<<PB2);}

--------------------------------------------------

int main (void) {            

   DDRB = (1 << PB0);

  Mvor();

  setPWM(0);

  for(uint8_t i=0; i<255; i=i+5)

  {

    setPWM(i);

  }

  setPWM(255);  

   return 0;                 

}