From 55323faebe0abb6b8900fc7b1344d383abe08a9d Mon Sep 17 00:00:00 2001
From: Marti Bolivar <mbolivar@leaflabs.com>
Date: Wed, 4 May 2011 13:20:20 -0400
Subject: systick_timer_millis is volatile, not IO-mapped.

---
 libmaple/systick.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'libmaple/systick.h')

diff --git a/libmaple/systick.h b/libmaple/systick.h
index 4654c5f..35b4cb9 100644
--- a/libmaple/systick.h
+++ b/libmaple/systick.h
@@ -73,7 +73,7 @@ typedef struct systick_reg_map {
 #define SYSTICK_CVR_TENMS               0xFFFFFF
 
 /** System elapsed time, in milliseconds */
-extern __io uint32 systick_timer_millis;
+extern volatile uint32 systick_timer_millis;
 
 void systick_init(uint32 reload_val);
 void systick_disable();
-- 
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