Sensor Watch Simulator (#35)
* Put something on screen * Use the 32bit watch_date_time repr to pass from JS * Implement periodic callbacks * Clear display on enabling * Hook up watch_set_led_color() to SVG (green-only) * Make debug output full-width * Remove default Emscripten canvas * Implement sleep and button clicks * Fix time zone conversion bug in beats-time app * Clean up warnings * Fix pin levels * Set time zone to browser value (if available) * Add basic backup data saving * Silence format specifier warnings in both targets * Remove unnecessary, copied files * Use RTC pointer to clear callbacks (if available) * Use preprocessor define to avoid hardcoding MOVEMENT_NUM_FACES * Change each face to const preprocessor definition * Remove Intl.DateTimeFormat usage * Update shell.html title, header * Add touch start/end event handlers on SVG buttons * Update shell.html * Update folder structure (shared, simulator, hardware under watch-library) * Tease out shared components from watch_slcd * Clean up simulator watch_slcd.c inline JS calls * Fix missing newlines at end of file * Add simulator warnings (except format, unused-paremter) * Implement remaining watch_rtc functions * Fix button bug on mouse down then drag out * Implement remaining watch_slcd functions * Link keyboard events to buttons (for keys A, L, M) * Rewrite event handling (mouse, touch, keyboard) in C * Set explicit text UTF-8 charset in shell.html * Address PR comments * Remove unused directories from include paths
This commit is contained in:
Alexsander Akers
GitHub
172
watch-library/shared/watch/watch_utility.c
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172
watch-library/shared/watch/watch_utility.c
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/*
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* MIT License
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*
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* Copyright (c) 2021 Joey Castillo
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <math.h>
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#include "watch_utility.h"
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const char * watch_utility_get_weekday(watch_date_time date_time) {
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static const char weekdays[7][3] = {"SA", "SU", "MO", "TU", "WE", "TH", "FR"};
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date_time.unit.year += 20;
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if (date_time.unit.month <= 2) {
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date_time.unit.month += 12;
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date_time.unit.year--;
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}
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return weekdays[(date_time.unit.day + 13 * (date_time.unit.month + 1) / 5 + date_time.unit.year + date_time.unit.year / 4 + 525) % 7];
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}
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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) {
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uint16_t DAYS_SO_FAR[] = {
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0, // Jan
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31, // Feb
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59, // March
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90, // April
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120, // May
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151, // June
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181, // July
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212, // August
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243, // September
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273, // October
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304, // November
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334 // December
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};
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uint32_t year_adj = year + 4800;
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uint32_t febs = year_adj - (month <= 2 ? 1 : 0); /* Februaries since base. */
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uint32_t leap_days = 1 + (febs / 4) - (febs / 100) + (febs / 400);
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uint32_t days = 365 * year_adj + leap_days + DAYS_SO_FAR[month - 1] + day - 1;
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days -= 2472692; /* Adjust to Unix epoch. */
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uint32_t timestamp = days * 86400;
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timestamp += hour * 3600;
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timestamp += minute * 60;
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timestamp += second;
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timestamp -= utc_offset;
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return timestamp;
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}
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uint32_t watch_utility_date_time_to_unix_time(watch_date_time date_time, uint32_t utc_offset) {
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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);
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}
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#define LEAPOCH (946684800LL + 86400*(31+29))
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#define DAYS_PER_400Y (365*400 + 97)
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#define DAYS_PER_100Y (365*100 + 24)
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#define DAYS_PER_4Y (365*4 + 1)
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watch_date_time watch_utility_date_time_from_unix_time(uint32_t timestamp, uint32_t utc_offset) {
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watch_date_time retval;
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retval.reg = 0;
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int32_t days, secs;
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int32_t remdays, remsecs, remyears;
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int32_t qc_cycles, c_cycles, q_cycles;
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int32_t years, months;
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int32_t wday, yday, leap;
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static const int8_t days_in_month[] = {31,30,31,30,31,31,30,31,30,31,31,29};
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timestamp += utc_offset;
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secs = timestamp - LEAPOCH;
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days = secs / 86400;
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remsecs = secs % 86400;
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if (remsecs < 0) {
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remsecs += 86400;
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days--;
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}
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wday = (3+days)%7;
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if (wday < 0) wday += 7;
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qc_cycles = (int)(days / DAYS_PER_400Y);
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remdays = days % DAYS_PER_400Y;
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if (remdays < 0) {
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remdays += DAYS_PER_400Y;
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qc_cycles--;
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}
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c_cycles = remdays / DAYS_PER_100Y;
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if (c_cycles == 4) c_cycles--;
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remdays -= c_cycles * DAYS_PER_100Y;
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q_cycles = remdays / DAYS_PER_4Y;
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if (q_cycles == 25) q_cycles--;
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remdays -= q_cycles * DAYS_PER_4Y;
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remyears = remdays / 365;
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if (remyears == 4) remyears--;
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remdays -= remyears * 365;
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leap = !remyears && (q_cycles || !c_cycles);
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yday = remdays + 31 + 28 + leap;
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if (yday >= 365+leap) yday -= 365+leap;
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years = remyears + 4*q_cycles + 100*c_cycles + 400*qc_cycles;
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for (months=0; days_in_month[months] <= remdays; months++)
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remdays -= days_in_month[months];
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years += 2000;
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months += 2;
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if (months >= 12) {
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months -=12;
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years++;
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}
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if (years < 2020 || years > 2083) return retval;
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retval.unit.year = years - WATCH_RTC_REFERENCE_YEAR;
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retval.unit.month = months + 1;
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retval.unit.day = remdays + 1;
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retval.unit.hour = remsecs / 3600;
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retval.unit.minute = remsecs / 60 % 60;
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retval.unit.second = remsecs % 60;
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return retval;
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}
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watch_date_time watch_utility_date_time_convert_zone(watch_date_time date_time, uint32_t origin_utc_offset, uint32_t destination_utc_offset) {
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uint32_t timestamp = watch_utility_date_time_to_unix_time(date_time, origin_utc_offset);
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return watch_utility_date_time_from_unix_time(timestamp, destination_utc_offset);
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}
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float watch_utility_thermistor_temperature(uint16_t value, bool highside, float b_coefficient, float nominal_temperature, float nominal_resistance, float series_resistance) {
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float reading = (float)value;
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if (highside) {
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reading = (1023.0 * series_resistance) / (reading / 64.0);
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reading -= series_resistance;
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} else {
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reading = series_resistance / (65535.0 / value - 1.0);
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}
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reading = reading / nominal_resistance;
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reading = log(reading);
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reading /= b_coefficient;
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reading += 1.0 / (nominal_temperature + 273.15);
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reading = 1.0 / reading;
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reading -= 273.15;
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return reading;
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}
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