| author | Tero Marttila <terom@fixme.fi> |
| Tue, 26 Jul 2011 22:43:59 +0300 | |
| changeset 41 | fe9f354dddd4 |
| parent 17 | a7c668003a19 |
| child 46 | ffb0c3ec9bc0 |
| permissions | -rw-r--r-- |
|
17
a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
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1 |
;; |
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
2 |
;; Busy-loop delays |
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
3 |
;; |
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
4 |
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
5 |
;; Delay for approx. one second |
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
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6 |
Delay_1s: |
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
7 |
; ~16M cycles |
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
8 |
ldi r20, 82 |
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
9 |
rjmp delay_init |
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
10 |
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
11 |
;; Delay for a variable amount of time, adjusted by r20 |
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
12 |
; Input: r20 controls number of delay loops |
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
13 |
VarDelay: |
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
14 |
tst r20 |
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
15 |
breq delay_out |
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
16 |
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
17 |
delay_init: |
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
18 |
ldi r21, 255 |
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
19 |
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
20 |
delay_loop: |
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
21 |
; 254 * (1 + 2) + 1 * (1 + 1) = 764 cycles / loop |
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
22 |
dec r22 |
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
23 |
brne delay_loop |
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
24 |
|
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
25 |
; 254 * 764 + 764 = 194820 cycles / loop |
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
26 |
dec r21 ; 1 * r20 * r21 |
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
27 |
brne delay_loop ; 2 * r20 * r21 |
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
28 |
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
29 |
; r20 * 194820 + r20 * 3 = 194823 cycles / loop (r20) |
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
30 |
dec r20 ; 1 * r20 |
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
31 |
brne delay_loop ; 2 * r20 |
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
32 |
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
33 |
delay_out: |
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
34 |
ret |
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
35 |
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a7c668003a19
split led7seg.s into .inc modules, and update Makefile to use .s -> .hex, and above .inc's for led7seg
Tero Marttila <terom@fixme.fi>
parents:
diff
changeset
|
36 |