--- /dev/null
+/*
+ * MIT License
+ *
+ * Copyright (c) 2022 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 <stdlib.h>
+#include <string.h>
+#include <math.h>
+#include "watch_utility.h"
+#include "mars_time_face.h"
+
+// note: lander coordinates come from Mars24's `marslandmarks.xml` file
+static double site_longitudes[MARS_TIME_NUM_SITES] = {
+ 0, // Mars Coordinated Time, at the meridian
+ 360.0 - 109.9, // Zhurong lander site
+ 360.0 - 77.45088572, // Perseverance lander site
+ 360.0 - 135.623447, // InSight lander site
+ 360.0 - 137.441635, // Curiosity lander site
+};
+
+static char site_names[MARS_TIME_NUM_SITES][3] = {
+ "MC",
+ "ZH",
+ "PE",
+ "IN",
+ "CU",
+};
+
+static uint16_t landing_sols[MARS_TIME_NUM_SITES] = {
+ 0,
+ 52387,
+ 52304,
+ 51511,
+ 49269,
+};
+
+typedef struct {
+ uint8_t hour;
+ uint8_t minute;
+ uint8_t second;
+} mars_clock_hms_t;
+
+static void _h_to_hms(mars_clock_hms_t *date_time, double h) {
+ unsigned int seconds = (unsigned int)(h * 3600.0);
+ date_time->hour = seconds / 3600;
+ seconds = seconds % 3600;
+ date_time->minute = floor(seconds / 60);
+ date_time->second = round(seconds % 60);
+}
+
+static void _update(movement_settings_t *settings, mars_time_state_t *state) {
+ char buf[11];
+ watch_date_time date_time = watch_rtc_get_date_time();
+ uint32_t now = watch_utility_date_time_to_unix_time(date_time, movement_timezone_offsets[settings->bit.time_zone] * 60);
+ // TODO: I'm skipping over some steps here.
+ // https://www.giss.nasa.gov/tools/mars24/help/algorithm.html
+ double jdut = 2440587.5 + ((double)now / 86400.0);
+ double jdtt = jdut + ((37.0 + 32.184) / 86400.0);
+ double jd2k = jdtt - 2451545.0;
+ double msd = ((jd2k - 4.5) / 1.0274912517) + 44796.0 - 0.0009626;
+ double mtc = fmod(24 * msd, 24);
+ double lmt;
+
+ if (state->current_site == 0) {
+ lmt = mtc;
+ } else {
+ double longitude = site_longitudes[state->current_site];
+ double lmst = mtc - ((longitude * 24.0) / 360.0);
+ lmt = fmod(lmst + 24, 24);
+ }
+
+ if (state->displaying_sol) {
+ // TODO: this is not right, mission sol should turn over at midnight local time?
+ uint16_t sol = floor(msd) - landing_sols[state->current_site];
+ if (sol < 1000) sprintf(&buf[0], "%s Sol%3d", site_names[state->current_site], sol);
+ else sprintf(&buf[0], "%s s%6d", site_names[state->current_site], sol);
+ watch_clear_colon();
+ watch_clear_indicator(WATCH_INDICATOR_24H);
+ } else {
+ mars_clock_hms_t mars_time;
+ _h_to_hms(&mars_time, lmt);
+ sprintf(&buf[0], "%s %02d%02d%02d", site_names[state->current_site], mars_time.hour, mars_time.minute, mars_time.second);
+ watch_set_colon();
+ watch_set_indicator(WATCH_INDICATOR_24H);
+ }
+
+ watch_display_string(buf, 0);
+}
+
+void mars_time_face_setup(movement_settings_t *settings, uint8_t watch_face_index, void ** context_ptr) {
+ (void) settings;
++ (void) watch_face_index;
+ if (*context_ptr == NULL) {
+ *context_ptr = malloc(sizeof(mars_time_state_t));
+ memset(*context_ptr, 0, sizeof(mars_time_state_t));
+ }
+}
+
+void mars_time_face_activate(movement_settings_t *settings, void *context) {
+ (void) settings;
+ mars_time_state_t *state = (mars_time_state_t *)context;
+ (void) state;
+}
+
+bool mars_time_face_loop(movement_event_t event, movement_settings_t *settings, void *context) {
+ mars_time_state_t *state = (mars_time_state_t *)context;
+
+ switch (event.event_type) {
+ case EVENT_ACTIVATE:
+ case EVENT_TICK:
+ _update(settings, state);
+ break;
+ case EVENT_MODE_BUTTON_UP:
+ movement_move_to_next_face();
+ break;
+ case EVENT_LIGHT_BUTTON_UP:
+ state->displaying_sol = !state->displaying_sol;
+ _update(settings, state);
+ break;
+ case EVENT_LIGHT_LONG_PRESS:
+ movement_illuminate_led();
+ break;
+ case EVENT_ALARM_BUTTON_UP:
+ state->current_site = (state->current_site + 1) % MARS_TIME_NUM_SITES;
+ _update(settings, state);
+ break;
+ case EVENT_TIMEOUT:
+ // TODO: make this lower power so we can avoid timeout
+ movement_move_to_face(0);
+ break;
+ case EVENT_LOW_ENERGY_UPDATE:
+ // TODO: low energy update
+ // watch_start_tick_animation(500);
+ break;
+ default:
+ break;
+ }
+
+ return true;
+}
+
+void mars_time_face_resign(movement_settings_t *settings, void *context) {
+ (void) settings;
+ (void) context;
+}
+
projects / sensor-watch.git / commitdiff