From 442b1ef18c8320d4e5329dc92bb5268a36058fc5 Mon Sep 17 00:00:00 2001
From: Keith Packard <keithp@keithp.com>
Date: Sat, 31 Oct 2009 01:19:41 -0700
Subject: [PATCH] Use ao_alarm for ao_delay so it can be easily interrupted

---
 src/ao_timer.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/ao_timer.c b/src/ao_timer.c
index 78c6e063..d7603435 100644
--- a/src/ao_timer.c
+++ b/src/ao_timer.c
@@ -24,13 +24,13 @@ uint16_t ao_time(void) __critical
 	return ao_tick_count;
 }
 
+static __xdata uint8_t ao_forever;
+
 void
 ao_delay(uint16_t ticks)
 {
-	uint16_t until = ao_time() + ticks;
-
-	while ((int16_t) (until - ao_time()) > 0)
-		ao_sleep(DATA_TO_XDATA(&ao_tick_count));
+	ao_alarm(ticks);
+	ao_sleep(&ao_forever);
 }
 
 #define T1_CLOCK_DIVISOR	8	/* 24e6/8 = 3e6 */
-- 
2.30.2