Improve ipod i2c driver somewhat by at least taking advantage of the in-device addressing in the pcf50605, also switch to a 10bit resistive divider for the ipod battery reading, this is easily configurable if it needs changing, or even to become a user/runtime setting

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8980 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 5 insertions, 4 deletions

diff --git a/firmware/common/timefuncs.c b/firmware/common/timefuncs.c
index 275fc6c782..5cf1a35a77 100644
--- a/firmware/common/timefuncs.c
+++ b/firmware/common/timefuncs.c
@@ -47,12 +47,13 @@ struct tm *get_time(void)
 {
 #ifndef SIMULATOR
 #ifdef CONFIG_RTC
-    static long last_tick = 0;
+    static long timeout = 0;
 
-    /* Don't read the RTC more than 4 times per second */
-    if (last_tick + HZ < current_tick) {
+    /* Don't read the RTC more than once per second */
+    if (current_tick > timeout) {
         char rtcbuf[7];
-        last_tick = HZ * (current_tick / HZ);
+        /* Once per second, 1/10th of a second off */
+        timeout = HZ * (current_tick / HZ + 1) + HZ / 5;
         rtc_read_datetime(rtcbuf);
 
         tm.tm_sec = ((rtcbuf[0] & 0x70) >> 4) * 10 + (rtcbuf[0] & 0x0f);