movement: first pass at mars clock

movement/make/Makefile

@@ -50,6 +50,7 @@ SRCS += \
   ../watch_faces/complication/countdown_face.c \
   ../watch_faces/complication/blinky_face.c \
   ../watch_faces/complication/moon_phase_face.c \
+  ../watch_faces/clock/mars_time_face.c \
 # New watch faces go above this line.
 
 # Leave this line at the bottom of the file; it has all the targets for making your project.

movement/movement_faces.h

@@ -45,6 +45,7 @@
 #include "countdown_face.h"
 #include "blinky_face.h"
 #include "moon_phase_face.h"
+#include "mars_time_face.h"
 // New includes go above this line.
 
 #endif // MOVEMENT_FACES_H_

movement/watch_faces/clock/mars_time_face.c

@@ -0,0 +1,112 @@
+/*
+ * 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"
+
+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) {
+    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);
+    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);
+    mars_clock_hms_t mars_time;
+    _h_to_hms(&mars_time, mtc);
+    sprintf(&buf[0], "MC  %02d%02d%02d", 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;
+    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;
+    (void) state;
+
+    switch (event.event_type) {
+        case EVENT_ACTIVATE:
+        case EVENT_TICK:
+            _update(settings);
+            break;
+        case EVENT_MODE_BUTTON_UP:
+            movement_move_to_next_face();
+            break;
+        case EVENT_LIGHT_BUTTON_UP:
+            movement_illuminate_led();
+            break;
+        case EVENT_ALARM_BUTTON_UP:
+            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;
+}
+

movement/watch_faces/clock/mars_time_face.h

@@ -0,0 +1,48 @@
+/*
+ * 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.
+ */
+
+#ifndef MARS_TIME_FACE_H_
+#define MARS_TIME_FACE_H_
+
+#include "movement.h"
+
+typedef struct {
+    uint8_t unused;
+} mars_time_state_t;
+
+void mars_time_face_setup(movement_settings_t *settings, uint8_t watch_face_index, void ** context_ptr);
+void mars_time_face_activate(movement_settings_t *settings, void *context);
+bool mars_time_face_loop(movement_event_t event, movement_settings_t *settings, void *context);
+void mars_time_face_resign(movement_settings_t *settings, void *context);
+
+#define mars_time_face ((const watch_face_t){ \
+    mars_time_face_setup, \
+    mars_time_face_activate, \
+    mars_time_face_loop, \
+    mars_time_face_resign, \
+    NULL, \
+})
+
+#endif // MARS_TIME_FACE_H_
+