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add function for converting to 12 hour time

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This commit is contained in:
Joey Castillo 2022-01-31 21:17:10 -08:00
parent 7085f89bfa
commit 518a9aa919
2 changed files with 20 additions and 0 deletions
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7
watch-library/shared/watch/watch_utility.c
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@ -151,6 +151,13 @@ watch_date_time watch_utility_date_time_convert_zone(watch_date_time date_time,
return watch_utility_date_time_from_unix_time(timestamp, destination_utc_offset);
}
bool watch_utility_convert_to_12_hour(watch_date_time *date_time) {
bool is_pm = date_time->unit.hour > 11;
date_time->unit.hour %= 12;
if (date_time->unit.hour == 0) date_time->unit.hour = 12;
return is_pm;
}
float watch_utility_thermistor_temperature(uint16_t value, bool highside, float b_coefficient, float nominal_temperature, float nominal_resistance, float series_resistance) {
float reading = (float)value;

13
watch-library/shared/watch/watch_utility.h
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@ -70,6 +70,19 @@ uint32_t watch_utility_date_time_to_unix_time(watch_date_time date_time, uint32_
*/
watch_date_time watch_utility_date_time_from_unix_time(uint32_t timestamp, uint32_t utc_offset);
/** @brief Converts a watch_date_time for 12-hour display.
* @param date_time A pointer to the watch_date_time that you wish to convert for display. Note that this
* function will OVERWRITE the original date/time, rendering it invalid for date/time
* calculations. Midnight (hour 0) will become 12, and hours in the afternoon will wrap
* back around to values from 1-11.
* @return True if the value is in the afternoon. You can use this value to determine whether to set the
* PM indicator on the LCD.
* @note This function sort of abuses the watch_date_time struct; the date/time that results from calling
* this function is clamped to the hours of 1:00:00 AM through 12:59:59 PM. It no longer reflects a
* valid watch_date_time for writing to an RTC register.
*/
bool watch_utility_convert_to_12_hour(watch_date_time *date_time);
/** @brief Converts a time from a given time zone to another time zone.
* @param date_time The watch_date_time that you wish to convert
* @param origin_utc_offset The number of seconds from UTC in the origin time zone