David Knight
This library lets you control the addressable RGB LED strips from Pololu Robotics. Forked to add selectable colour order (Support RGB or GRB Leds)
Fork of
PololuLedStrip
by 
David Grayson
Diff: led_strip_write_color.s
- Revision:
- 11:e00ba70ac54c
- Parent:
- 10:f1bb84b97788
- Child:
- 12:b6df8ac053c8
--- 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