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Make seconds flow evenly and further throttle RTC reads solution partially thanks to amiconn

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8938 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Brandon Low 2006-03-06 22:53:59 +00:00
parent 48a336851e
commit 40d0d752aa
1 changed files with 13 additions and 13 deletions
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8
firmware/common/timefuncs.c
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@ -46,13 +46,13 @@ bool valid_time(const struct tm *tm)
struct tm *get_time(void) struct tm *get_time(void)
{ {
#ifndef SIMULATOR #ifndef SIMULATOR
#ifdef CONFIG_RTC
static long last_tick = 0; static long last_tick = 0;
/* Don't read the RTC more than 4 times per second */ /* Don't read the RTC more than 4 times per second */
if (last_tick + HZ/4 < current_tick) { if (last_tick + HZ < current_tick) {
#ifdef CONFIG_RTC
char rtcbuf[7]; char rtcbuf[7];
last_tick = current_tick; last_tick = HZ * (current_tick / HZ);
rtc_read_datetime(rtcbuf); rtc_read_datetime(rtcbuf);
tm.tm_sec = ((rtcbuf[0] & 0x70) >> 4) * 10 + (rtcbuf[0] & 0x0f); tm.tm_sec = ((rtcbuf[0] & 0x70) >> 4) * 10 + (rtcbuf[0] & 0x0f);
@ -65,7 +65,6 @@ struct tm *get_time(void)
tm.tm_yday = 0; /* Not implemented for now */ tm.tm_yday = 0; /* Not implemented for now */
tm.tm_isdst = -1; /* Not implemented for now */ tm.tm_isdst = -1; /* Not implemented for now */
}
#else #else
tm.tm_sec = 0; tm.tm_sec = 0;
tm.tm_min = 0; tm.tm_min = 0;
@ -77,6 +76,7 @@ struct tm *get_time(void)
tm.tm_yday = 0; /* Not implemented for now */ tm.tm_yday = 0; /* Not implemented for now */
tm.tm_isdst = -1; /* Not implemented for now */ tm.tm_isdst = -1; /* Not implemented for now */
#endif #endif
}
return &tm; return &tm;
#else #else
time_t now = time(NULL); time_t now = time(NULL);