Michael Koster
/
PololuLedStripNucleo
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Fork of
PololuLedStrip
by 
David Grayson
Revision 11:e00ba70ac54c, committed 2013-03-01
- Comitter:
- DavidEGrayson
- Date:
- Fri Mar 01 04:16:44 2013 +0000
- Parent:
- 10:f1bb84b97788
- Child:
- 12:b6df8ac053c8
- Commit message:
- Simplified the pushing and popping of LR.
Changed in this revision
| led_strip_write_color.s | Show annotated file Show diff for this revision Revisions of this file |
--- a/led_strip_write_color.s Fri Mar 01 04:15:35 2013 +0000
+++ b/led_strip_write_color.s Fri Mar 01 04:16:44 2013 +0000
@@ -26,9 +26,7 @@
; R13: Link Register, holds return addresses.
; Push those registers so we can restore them later.
- push {r4, r5, r6, r7}
- mov r4, lr
- push {r4}
+ push {r4, r5, r6, r7, lr}
ldrb r4, [r0, #0] ; Load red.
lsls r4, r4, #24
@@ -74,10 +72,7 @@
bne send_led_strip_bit ; Send another bit if we have not reached zero.
led_strip_asm_end
- pop {r4}
- mov lr, r4
- pop {r4, r5, r6, r7}
- bx lr
+ pop {r4, r5, r6, r7, pc}
delay_region