P2

Abgaben/P1/Hazinedar_3108590_ARBKVS_1.asm

@@ -0,0 +1,71 @@
+;
+; P1.asm
+;
+; Created: 12.10.2023 22:54:52
+; Author : Safak Hazinedar
+;
+
+.include "m328pdef.inc"
+
+.org 0x00
+rjmp		init
+
+init:
+	ldi		r16, LOW(RAMEND)			; Stack einrichten für Befehle
+	out		SPL, r16
+	ldi		r16, HIGH(RAMEND)
+	out		SPH, r16
+
+	ldi		r17, 0xFF
+	out		DDRD, r17					; Data direction register D (D0-D7) as output
+
+	ldi		r18, 0x03
+	out		DDRB, r18					; Data direction register B (B0-B1) as output
+
+	ldi		r17, 0x01					; initialize D0
+
+portD_left:								
+	out		PORTD, r17					
+	rcall	delay
+	lsl		r17							; shift left until PortD is 0x00
+	cpi		r17, 0x00					; 
+		brne	portD_left					
+	out		PORTD, r17					; D0-D7 = 0
+	ldi		r18, 0x01					; switch to PortB
+
+portB_left:	
+	out		PORTB, r18					; D8 = 1
+	rcall	delay
+	lsl		r18							 
+	cpi 	r18, 0x02					; length of PortB is variable 
+		brne 	portB_left
+										; D9 = 1 => last LED turned on
+portB_right:							
+	out		PORTB, r18					
+	rcall	delay
+	lsr		r18							; turn direction
+	cpi		r18, 0x00					; shift right until PortB is 0x00
+		brne	portB_right
+	out		PORTB, r18					; turn of PortB or rather D8 & D9					
+	ldi		r17, 0x80					
+
+portD_right:									
+	out		PORTD, r17					; turn on D7
+	rcall	delay
+	lsr		r17
+	cpi		r17, 0x01					; shift right until D0 is reached
+		brne	portD_right						
+	jmp		portD_left					; turn direction
+
+delay:
+    ldi  r19, 17
+    ldi  r20, 60
+    ldi  r21, 204
+
+L1: dec  r21                   
+    brne L1                    
+    dec  r20                   
+    brne L1                     
+    dec  r19                    
+    brne L1                     
+    ret