diff options
Diffstat (limited to 'watch-library/watch/watch_utility.c')
| -rw-r--r-- | watch-library/watch/watch_utility.c | 172 |
1 files changed, 0 insertions, 172 deletions
diff --git a/watch-library/watch/watch_utility.c b/watch-library/watch/watch_utility.c deleted file mode 100644 index 835076d9..00000000 --- a/watch-library/watch/watch_utility.c +++ /dev/null @@ -1,172 +0,0 @@ -/* - * MIT License - * - * Copyright (c) 2021 Joey Castillo - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in all - * copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include <math.h> -#include "watch_utility.h" - -const char * watch_utility_get_weekday(watch_date_time date_time) { - static const char weekdays[7][3] = {"SA", "SU", "MO", "TU", "WE", "TH", "FR"}; - date_time.unit.year += 20; - if (date_time.unit.month <= 2) { - date_time.unit.month += 12; - date_time.unit.year--; - } - return weekdays[(date_time.unit.day + 13 * (date_time.unit.month + 1) / 5 + date_time.unit.year + date_time.unit.year / 4 + 525) % 7]; -} - -uint32_t watch_utility_convert_to_unix_time(uint16_t year, uint8_t month, uint8_t day, uint8_t hour, uint8_t minute, uint8_t second, uint32_t utc_offset) { - uint16_t DAYS_SO_FAR[] = { - 0, // Jan - 31, // Feb - 59, // March - 90, // April - 120, // May - 151, // June - 181, // July - 212, // August - 243, // September - 273, // October - 304, // November - 334 // December - }; - - uint32_t year_adj = year + 4800; - uint32_t febs = year_adj - (month <= 2 ? 1 : 0); /* Februaries since base. */ - uint32_t leap_days = 1 + (febs / 4) - (febs / 100) + (febs / 400); - uint32_t days = 365 * year_adj + leap_days + DAYS_SO_FAR[month - 1] + day - 1; - days -= 2472692; /* Adjust to Unix epoch. */ - - uint32_t timestamp = days * 86400; - timestamp += hour * 3600; - timestamp += minute * 60; - timestamp += second; - timestamp -= utc_offset; - - return timestamp; -} - -uint32_t watch_utility_date_time_to_unix_time(watch_date_time date_time, uint32_t utc_offset) { - return watch_utility_convert_to_unix_time(date_time.unit.year + WATCH_RTC_REFERENCE_YEAR, date_time.unit.month, date_time.unit.day, date_time.unit.hour, date_time.unit.minute, date_time.unit.second, utc_offset); -} - -#define LEAPOCH (946684800LL + 86400*(31+29)) - -#define DAYS_PER_400Y (365*400 + 97) -#define DAYS_PER_100Y (365*100 + 24) -#define DAYS_PER_4Y (365*4 + 1) - -watch_date_time watch_utility_date_time_from_unix_time(uint32_t timestamp, uint32_t utc_offset) { - watch_date_time retval; - retval.reg = 0; - int32_t days, secs; - int32_t remdays, remsecs, remyears; - int32_t qc_cycles, c_cycles, q_cycles; - int32_t years, months; - int32_t wday, yday, leap; - static const int8_t days_in_month[] = {31,30,31,30,31,31,30,31,30,31,31,29}; - timestamp += utc_offset; - - secs = timestamp - LEAPOCH; - days = secs / 86400; - remsecs = secs % 86400; - if (remsecs < 0) { - remsecs += 86400; - days--; - } - - wday = (3+days)%7; - if (wday < 0) wday += 7; - - qc_cycles = (int)(days / DAYS_PER_400Y); - remdays = days % DAYS_PER_400Y; - if (remdays < 0) { - remdays += DAYS_PER_400Y; - qc_cycles--; - } - - c_cycles = remdays / DAYS_PER_100Y; - if (c_cycles == 4) c_cycles--; - remdays -= c_cycles * DAYS_PER_100Y; - - q_cycles = remdays / DAYS_PER_4Y; - if (q_cycles == 25) q_cycles--; - remdays -= q_cycles * DAYS_PER_4Y; - - remyears = remdays / 365; - if (remyears == 4) remyears--; - remdays -= remyears * 365; - - leap = !remyears && (q_cycles || !c_cycles); - yday = remdays + 31 + 28 + leap; - if (yday >= 365+leap) yday -= 365+leap; - - years = remyears + 4*q_cycles + 100*c_cycles + 400*qc_cycles; - - for (months=0; days_in_month[months] <= remdays; months++) - remdays -= days_in_month[months]; - - years += 2000; - - months += 2; - if (months >= 12) { - months -=12; - years++; - } - - if (years < 2020 || years > 2083) return retval; - retval.unit.year = years - WATCH_RTC_REFERENCE_YEAR; - retval.unit.month = months + 1; - retval.unit.day = remdays + 1; - - retval.unit.hour = remsecs / 3600; - retval.unit.minute = remsecs / 60 % 60; - retval.unit.second = remsecs % 60; - - return retval; -} - -watch_date_time watch_utility_date_time_convert_zone(watch_date_time date_time, uint32_t origin_utc_offset, uint32_t destination_utc_offset) { - uint32_t timestamp = watch_utility_date_time_to_unix_time(date_time, origin_utc_offset); - return watch_utility_date_time_from_unix_time(timestamp, destination_utc_offset); -} - -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; - - if (highside) { - reading = (1023.0 * series_resistance) / (reading / 64.0); - reading -= series_resistance; - } else { - reading = series_resistance / (65535.0 / value - 1.0); - } - - reading = reading / nominal_resistance; - reading = log(reading); - reading /= b_coefficient; - reading += 1.0 / (nominal_temperature + 273.15); - reading = 1.0 / reading; - reading -= 273.15; - - return reading; -} |