monolyzer/timer.asm

   1 ; timer functions
   2
   3 TIMER1_INIT:
   4
   5         ; clock select, prescaler 64
   6         in tmp1,TCCR1B
   7         cbr tmp1,(1<<CS12)
   8         sbr tmp1,(1<<CS11)
   9         sbr tmp1,(1<<CS10)
  10         out TCCR1B,tmp1
  11
  12         ret
  13
  14 TIMER1_INT_ENABLE:
  15
  16         ; overflow interrupt enable
  17         in tmp1,TIMSK
  18         sbr tmp1,(1<<TOIE1)
  19         out TIMSK,tmp1
  20
  21         ret
  22
  23 TIMER1_INT_DISABLE:
  24
  25         ; overflow interrupt disable
  26         in tmp1,TIMSK
  27         cbr tmp1,(1<<TOIE1)
  28         out TIMSK,tmp1
  29
  30         ret
  31