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  1. ;
  2. ; uppgift 1.asm
  3. ;
  4. ; Created: 2020-02-27 08:37:57
  5. ; Author : eko15lj1
  6. ;
  7.  
  8. #define DDRB 0x04
  9. #define PORTB 0x05
  10. #define LED0 0
  11.  
  12. ; Replace with your application code
  13. start:
  14. ldi r18, (4 << LED0)
  15. in r17, DDRB
  16. or r17, r18
  17. out DDRB, r18
  18.  
  19. in r17, PORTB
  20. or r17, r18
  21. out PORTB, r18
  22.  
  23. ; 5hz
  24. /* ldi r19, 9
  25. ldi r20, 30
  26. ldi r21, 229*/
  27. ;1hz
  28. /*ldi r19, 41
  29. ldi r20, 150
  30. ldi r21, 128
  31. call L1*/
  32. rjmp delay
  33.  
  34. off:
  35. ldi r18, (LED0 << 8)
  36. out PORTB, r18
  37.  
  38. /*; 5hz
  39. ldi r19, 9
  40. ldi r20, 30
  41. ldi r21, 229*/
  42. ;1hz
  43. /* ldi r19, 41
  44. ldi r20, 150
  45. ldi r21, 128
  46. call L1*/
  47. call delay
  48. rjmp end
  49.  
  50. delay:
  51. ldi r19, 81
  52. loop1:
  53. ldi r20, 81
  54. loop2:
  55. ldi r21, 81
  56. loop3:
  57. dec r21
  58. brne loop3
  59. dec r20
  60. brne loop2
  61. dec r19
  62. brne loop1
  63. rjmp off
  64.  
  65.  
  66. end:
  67. rjmp start
  68.  
  69. /* L1:
  70. ;dec r21
  71. ;b;rne L1
  72. ;dec r20
  73. ;brne L1
  74. dec r19
  75. brne L1
  76. ret*/
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