Wechsel Laufrichtung ab der aktuellen Stelle

macros.inc

@@ -4,17 +4,19 @@
 
 .macro left_to_right
     in  @0, PORTD
-    rol @0
-    brcc PC+2
-    ldi @0, 0b00000001
-    out PORTD, @0
-.endmacro
-
-.macro right_to_left
-    in  @0, PORTD
+    clc
     ror @0
     brcc PC+2
     ldi @0, 0b10000000
     out PORTD, @0
 .endmacro
 
+.macro right_to_left
+    in  @0, PORTD
+    clc
+    rol @0
+    brcc PC+2
+    ldi @0, 0b00000001
+    out PORTD, @0
+.endmacro
+

main.asm

@@ -14,7 +14,7 @@
 .def cur_direction    = R20
 
 .equ L2R            = 0x01
-.equ R2L            = 0b00000100
+.equ R2L            = 0x04
 .equ RBTN_PRESSED   = 0b00000100
 .equ LBTN_PRESSED   = 0b00000001
 
@@ -38,8 +38,8 @@ init:
     ; ldi setter, 0b11111010
     ser setter
     out DDRB, setter            ; PB0 und PB2 als Inputs definieren
-    ; ldi setter, 0b00000101
-    ; out PORTB, setter           ; Interne Pullups aktivieren
+    ldi setter, 0b00000101
+    out PORTB, setter           ; Interne Pullups aktivieren
     clr setter
     out PORTB, setter
 
@@ -94,16 +94,12 @@ overflow_handler:
         ; Laufrichtungswechsel
         ;----
         cpi btn_status, LBTN_PRESSED
-        brne PC+3
-            ldi setter, 0b10000000
+        brne PC+2
             ldi cur_direction, L2R
 
         cpi btn_status, RBTN_PRESSED
-        brne PC+3
-            ldi setter, 0b00000001
+        brne PC+2
             ldi cur_direction, R2L
-
-        out PORTD, setter
         ;------
 
         run_animation: