michaelh/zephyr
1
0
Fork 0
Code Releases Activity

counter: stm32 rtc: simplify calculation

Browse source 
RTC drivers uses only seconds, so transition to microseconds is
necessary.

Change way of calculation tick<->time to avoid unnecessary
conversations.

Signed-off-by: Dawid Niedzwiecki <dawidn@google.com>
This commit is contained in:
Dawid Niedzwiecki 2023-09-26 08:56:26 +02:00 • committed by Carles Cufí
commit 322f7980c5
1 changed files with 3 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

7
drivers/counter/counter_ll_stm32_rtc.c
View file

@ -225,7 +225,7 @@ static uint32_t rtc_stm32_read(const struct device *dev)
ts -= T_TIME_OFFSET;
__ASSERT(sizeof(time_t) == 8, "unexpected time_t definition");
ticks = counter_us_to_ticks(dev, ts * USEC_PER_SEC);
ticks = ts * counter_get_frequency(dev);
#else
ticks = rtc_time;
#endif
@ -271,10 +271,9 @@ 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;
alarm_val = (time_t)(ticks / counter_get_frequency(dev)) + T_TIME_OFFSET;
} else {
alarm_val = (time_t)(counter_ticks_to_us(dev, ticks) / USEC_PER_SEC);
alarm_val = (time_t)(ticks / counter_get_frequency(dev));
}
#else
if ((alarm_cfg->flags & COUNTER_ALARM_CFG_ABSOLUTE) == 0) {