beginners/test_port_d.asm

   1 .include "../include/2313def.inc"
   2
   3 INIT:
   4 ldi r31,0
   5 ldi r30,0
   6 ldi r29,0
   7 out DDRD,r29 ; select all pins as input
   8 jmp DECIDE
   9
  10 DECIDE:
  11 adiw r30,1
  12 cp r30,0
  13 breq SET_0
  14 cp r30,1
  15 breq SET_1
  16 cp r30,2
  17 breq SET_2
  18 ldi r30,0
  19 jmp DECIDE
  20
  21 SET_0:
  22 ldi r16,0
  23 sbr r16,14
  24 out PORTD,r16
  25 jmp WAIT
  26
  27 SET_1:
  28 ldi r16,0
  29 sbr r16,48
  30 out PORTD,r16
  31 jmp WAIT
  32
  33 SET_2:
  34 ldi r16,0
  35 sbr r16,42
  36 out PORTD,r16
  37 jmp WAIT
  38
  39 WAIT:
  40 adiw r31,1
  41 cpi r31,0xff
  42 breq RESET
  43 jmp WAIT
  44
  45 RESET:
  46 ldi r31,0
  47 jmp DECIDE