testing minimal program

[rpikern] / src / startup.s

diff --git a/src/startup.s b/src/startup.s
index cba8c87..308d4fa 100644 (file)
--- a/src/startup.s
+++ b/src/startup.s
@@ -43,5 +43,10 @@ dbgled:
        streq r2, [r3, #0x28]   @ GPCLR0
        bx lr
 
+       .global delay
+delay:
+       subs r0, r0, #1
+       bne delay
+       bx lr
 
 @ vi:set filetype=armasm: