From 50f1ea16c5267ed866f0ed27a15a15f86af86c44 Mon Sep 17 00:00:00 2001
From: Linus Nielsen Feltzing <linus@haxx.se>
Date: Tue, 6 Aug 2002 08:13:06 +0000
Subject: rtc_init() takes care of both the ST and HT bits

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@1541 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/drivers/rtc.c | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

(limited to 'firmware')

diff --git a/firmware/drivers/rtc.c b/firmware/drivers/rtc.c
index 2882c975b7..c8e19aab53 100644
--- a/firmware/drivers/rtc.c
+++ b/firmware/drivers/rtc.c
@@ -28,9 +28,21 @@
 void rtc_init(void)
 {
     unsigned char data;
-    data = (unsigned int)rtc_read(0x0c);
-    data &= 0xbf;
-    rtc_write(0x0c,data);
+    rtc_write(0x13, 0x10); /* 32 kHz square wave */
+
+    /* Clear the Stop bit if it is set */
+    data = rtc_read(0x01);
+    if(data & 0x80)
+        rtc_write(0x01, 0x00);
+
+    /* Clear the HT bit if it is set */
+    data = rtc_read(0x0c);
+
+    if(data & 0x40)
+    {
+        data &= ~0x40;
+        rtc_write(0x0c,data);
+    }
 }
 
 int rtc_write(unsigned char address, unsigned char value)
-- 
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