led_plex/timer.asm

   1 ; timer functions
   2
   3 TIMER0_INIT:
   4
   5         ; clock select
   6 .ifdef DEBUG_PORTS
   7         ldi tmp1,0x03
   8 .else
   9         ldi tmp1,0x02
  10 .endif
  11         out TCCR0B,tmp1
  12
  13         ret
  14
  15 TIMER1_INIT:
  16
  17         ; clock select
  18         ldi tmp1,0x04
  19         out TCCR1B,tmp1
  20
  21         ret
  22
  23 TIMER0_INT_INIT:
  24
  25         ; overflow interrupt
  26         ldi tmp1,0x02
  27         out TIMSK,tmp1
  28
  29         ret
  30
  31 TIMER1_INT_INIT:
  32
  33         ; overflow interrupt
  34         in tmp1,TIMSK
  35         ori tmp1,(1<<7)
  36         out TIMSK,tmp1
  37
  38         ret
  39