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rtc: improve accuracy of preinit step

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This commit is contained in:
Miroslav Lichvar 2014-08-18 13:06:38 +02:00
parent 5fce101f85
commit 38ac081114
1 changed files with 6 additions and 2 deletions
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8
rtc_linux.c
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@ -1027,8 +1027,12 @@ RTC_Linux_TimePreInit(void)
} }
/* Correct time */ /* Correct time */
new_sys_time.tv_sec = rtc_t - (time_t)(0.5 + accumulated_error);
new_sys_time.tv_usec = 0; new_sys_time.tv_sec = rtc_t;
/* Average error in the RTC reading */
new_sys_time.tv_usec = 500000;
UTI_AddDoubleToTimeval(&new_sys_time, -accumulated_error, &new_sys_time);
/* Set system time only if the step is larger than 1 second */ /* Set system time only if the step is larger than 1 second */
if (!(gettimeofday(&old_sys_time, NULL) < 0) && if (!(gettimeofday(&old_sys_time, NULL) < 0) &&