arduino: delay.inc@5254ba612630 (annotated)

46 ffb0c3ec9bc0 moar dmx? Tero Marttila <terom@fixme.fi> parents: 17 diff changeset	1	;; vim: set ft=avr:
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	2	;;
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	;; Busy-loop delays
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	;;
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
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	6	;; Delay for approx. one second
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	Delay_1s:
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	; ~16M cycles
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	ldi r20, 82
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	rjmp delay_init
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
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	;; Delay for a variable amount of time, adjusted by r20
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	; Input: r20 controls number of delay loops
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	VarDelay:
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	tst r20
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	breq delay_out
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
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	delay_init:
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	ldi r21, 255
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
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	delay_loop:
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	; 254 * (1 + 2) + 1 * (1 + 1) = 764 cycles / loop
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	dec r22
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	brne delay_loop
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
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	; 254 * 764 + 764 = 194820 cycles / loop
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	dec r21 ; 1 * r20 * r21
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	brne delay_loop ; 2 * r20 * r21
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
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	; r20 * 194820 + r20 * 3 = 194823 cycles / loop (r20)
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	dec r20 ; 1 * r20
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	brne delay_loop ; 2 * r20
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
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	delay_out:
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	ret
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
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	37

author	Tero Marttila <terom@paivola.fi>
	Sun, 20 Apr 2014 23:51:57 +0300
changeset 80	5254ba612630
parent 46	ffb0c3ec9bc0
permissions	-rw-r--r--