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drivers: counter: stm32: fix alarm time calculation #32262

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Feb 14, 2021
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drivers: counter: stm32: fix alarm time calculation #32262

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6 changes: 4 additions & 2 deletions drivers/counter/counter_ll_stm32_rtc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -165,12 +165,14 @@ static int rtc_stm32_set_alarm(const struct device *dev, uint8_t chan_id,
* that tick+1 event occurs before alarm setting is finished.
*/
ticks += now + 1;
alarm_val = (time_t)(counter_ticks_to_us(dev, ticks) / USEC_PER_SEC)
+ T_TIME_OFFSET;
} else {
alarm_val = (time_t)(counter_ticks_to_us(dev, ticks) / USEC_PER_SEC);
}

LOG_DBG("Set Alarm: %d\n", ticks);

alarm_val = (time_t)(counter_ticks_to_us(dev, ticks) / USEC_PER_SEC);

gmtime_r(&alarm_val, &alarm_tm);

/* Apply ALARM_A */
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