--- a/delay.inc Mon Jun 02 18:27:08 2014 +0300
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,37 +0,0 @@
-;; vim: set ft=avr:
-;;
-;; Busy-loop delays
-;;
-
-;; Delay for approx. one second
-Delay_1s:
- ; ~16M cycles
- ldi r20, 82
- rjmp delay_init
-
-;; Delay for a variable amount of time, adjusted by r20
-; Input: r20 controls number of delay loops
-VarDelay:
- tst r20
- breq delay_out
-
-delay_init:
- ldi r21, 255
-
-delay_loop:
- ; 254 * (1 + 2) + 1 * (1 + 1) = 764 cycles / loop
- dec r22
- brne delay_loop
-
- ; 254 * 764 + 764 = 194820 cycles / loop
- dec r21 ; 1 * r20 * r21
- brne delay_loop ; 2 * r20 * r21
-
- ; r20 * 194820 + r20 * 3 = 194823 cycles / loop (r20)
- dec r20 ; 1 * r20
- brne delay_loop ; 2 * r20
-
-delay_out:
- ret
-
-