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test port d asm code
author
hackbard
<hackbard>
Sun, 7 Dec 2003 20:50:43 +0000
(20:50 +0000)
committer
hackbard
<hackbard>
Sun, 7 Dec 2003 20:50:43 +0000
(20:50 +0000)
beginners/test_port_d.asm
[new file with mode: 0644]
patch
|
blob
diff --git a/beginners/test_port_d.asm
b/beginners/test_port_d.asm
new file mode 100644
(file)
index 0000000..
0e31045
--- /dev/null
+++ b/
beginners/test_port_d.asm
@@ -0,0
+1,47
@@
+.include "../include/2313def.inc"
+
+INIT:
+ldi r31,0
+ldi r30,0
+ldi r29,0
+out DDRD,r29 ; select all pins as input
+jmp DECIDE
+
+DECIDE:
+adiw r30,1
+cp r30,0
+breq SET_0
+cp r30,1
+breq SET_1
+cp r30,2
+breq SET_2
+ldi r30,0
+jmp DECIDE
+
+SET_0:
+ldi r16,0
+sbr r16,14
+out PORTD,r16
+jmp WAIT
+
+SET_1:
+ldi r16,0
+sbr r16,48
+out PORTD,r16
+jmp WAIT
+
+SET_2:
+ldi r16,0
+sbr r16,42
+out PORTD,r16
+jmp WAIT
+
+WAIT:
+adiw r31,1
+cpi r31,0xff
+breq RESET
+jmp WAIT
+
+RESET:
+ldi r31,0
+jmp DECIDE