movement: day one watch face, counts days from birth

4 files changed, 210 insertions, 0 deletions

diff --git a/movement/make/Makefile b/movement/make/Makefile
index 89e3161a..aecd6b58 100755
--- a/movement/make/Makefile
+++ b/movement/make/Makefile
@@ -35,6 +35,7 @@ SRCS += \
   ../watch_faces/demos/character_set_face.c \
   ../watch_faces/demos/voltage_face.c \
   ../watch_faces/complications/beats_face.c \
+  ../watch_faces/complications/day_one_face.c \
 
 # Leave this line at the bottom of the file; it has all the targets for making your project.
 include $(TOP)/rules.mk
diff --git a/movement/movement_config.h b/movement/movement_config.h
index 9629a570..70bedc22 100644
--- a/movement/movement_config.h
+++ b/movement/movement_config.h
@@ -9,6 +9,7 @@
 #include "thermistor_logging_face.h"
 #include "character_set_face.h"
 #include "beats_face.h"
+#include "day_one_face.h"
 #include "voltage_face.h"
 
 const watch_face_t watch_faces[] = {
diff --git a/movement/watch_faces/complications/day_one_face.c b/movement/watch_faces/complications/day_one_face.c
new file mode 100644
index 00000000..146f3f6f
--- /dev/null
+++ b/movement/watch_faces/complications/day_one_face.c
@@ -0,0 +1,177 @@
+#include <stdlib.h>
+#include <string.h>
+#include "day_one_face.h"
+#include "watch.h"
+
+uint32_t _day_one_face_juliandaynum(uint16_t year, uint16_t month, uint16_t day) {
+    // from here: https://en.wikipedia.org/wiki/Julian_day#Julian_day_number_calculation
+    return (1461 * (year + 4800 + (month - 14) / 12)) / 4 + (367 * (month - 2 - 12 * ((month - 14) / 12))) / 12 - (3 * ((year + 4900 + (month - 14) / 12) / 100))/4 + day - 32075;
+}
+
+void _day_one_face_update(day_one_state_t state) {
+    char buf[14];
+    watch_date_time date_time = watch_rtc_get_date_time();
+    uint32_t julian_date = _day_one_face_juliandaynum(date_time.unit.year + WATCH_RTC_REFERENCE_YEAR, date_time.unit.month, date_time.unit.day);
+    uint32_t julian_birthdate = _day_one_face_juliandaynum(state.birth_year, state.birth_month, state.birth_day);
+    sprintf(buf, "DA  %6ld", julian_date - julian_birthdate);
+    watch_display_string(buf, 0);
+}
+
+void day_one_face_setup(movement_settings_t *settings, void ** context_ptr) {
+    (void) settings;
+    if (*context_ptr == NULL) {
+        *context_ptr = malloc(sizeof(day_one_state_t));
+        memset(*context_ptr, 0, sizeof(day_one_state_t));
+        movement_birthdate_t movement_birthdate = (movement_birthdate_t) watch_get_backup_data(2);
+        if (movement_birthdate.reg == 0) {
+            // if birth date is totally blank, set a reasonable starting date. this works well for anyone under 63, but
+            // you can keep pressing to go back to 1900; just pass the current year. also picked this date because if you
+            // set it to 1959-01-02, it counts up from the launch of Luna-1, the first spacecraft to leave the well.
+            movement_birthdate.bit.year = 1959;
+            movement_birthdate.bit.month = 1;
+            movement_birthdate.bit.day = 1;
+            watch_store_backup_data(movement_birthdate.reg, 2);
+        }
+    }
+}
+
+void day_one_face_activate(movement_settings_t *settings, void *context) {
+    (void) settings;
+    day_one_state_t *state = (day_one_state_t *)context;
+
+    // stash the current year, useful in birthday setting mode.
+    watch_date_time date_time = watch_rtc_get_date_time();
+    state->current_year = date_time.unit.year + WATCH_RTC_REFERENCE_YEAR;
+    // reset the current page to 0, display days alive.
+    state->current_page = 0;
+
+    // fetch the user's birth date from the birthday register.
+    movement_birthdate_t movement_birthdate = (movement_birthdate_t) watch_get_backup_data(2);
+    state->birth_year = movement_birthdate.bit.year;
+    state->birth_month = movement_birthdate.bit.month;
+    state->birth_day = movement_birthdate.bit.day;
+}
+
+bool day_one_face_loop(movement_event_t event, movement_settings_t *settings, void *context) {
+    (void) settings;
+    day_one_state_t *state = (day_one_state_t *)context;
+
+    const uint8_t days_in_month[12] = {31, 29, 31, 30, 31, 30, 30, 31, 30, 31, 30, 31};
+    char buf[6];
+
+    switch (event.event_type) {
+        case EVENT_ACTIVATE:
+            _day_one_face_update(*state);
+            break;
+        case EVENT_LOW_ENERGY_UPDATE:
+        case EVENT_TICK:
+            if (state->current_page != 0) {
+                // if in settings mode, update whatever the current page is
+                switch (state->current_page) {
+                    case 1:
+                        watch_display_string("YR        ", 0);
+                        if (event.subsecond % 2) {
+                            sprintf(buf, "%4d", state->birth_year);
+                            watch_display_string(buf, 4);
+                        }
+                        break;
+                    case 2:
+                        watch_display_string("MO        ", 0);
+                        if (event.subsecond % 2) {
+                            sprintf(buf, "%2d", state->birth_month);
+                            watch_display_string(buf, 4);
+                        }
+                        break;
+                    case 3:
+                        watch_display_string("DA        ", 0);
+                        if (event.subsecond % 2) {
+                            sprintf(buf, "%2d", state->birth_day);
+                            watch_display_string(buf, 6);
+                        }
+                        break;
+                }
+            } else {
+                // otherwise, check if we have to update. the display only needs to change at midnight!
+                watch_date_time date_time = watch_rtc_get_date_time();
+                if (date_time.unit.hour == 0 &&  date_time.unit.minute == 0 && date_time.unit.second == 0) {
+                    _day_one_face_update(*state);
+                }
+            }
+            break;
+        case EVENT_MODE_BUTTON_UP:
+            movement_move_to_next_face();
+            break;
+        case EVENT_LIGHT_BUTTON_DOWN:
+            // only illuminate if we're in display mode
+            if (state->current_page == 0) movement_illuminate_led();
+            break;
+        case EVENT_LIGHT_BUTTON_UP:
+            // otherwise use the light button to advance settings pages.
+            if (state->current_page != 0) {
+                // go to next setting page...
+                state->current_page = (state->current_page + 1) % 4;
+                if (state->current_page == 0) {
+                    // ...unless we've been pushed back to display mode.
+                    movement_request_tick_frequency(1);
+                    // force display since it normally won't update til midnight.
+                    _day_one_face_update(*state);
+                }
+            }
+            break;
+        case EVENT_ALARM_BUTTON_UP:
+            // if we are on a settings page, increment whatever value we're setting.
+            if (state->current_page != 0) {
+                state->birthday_changed = true;
+                switch (state->current_page) {
+                    case 1:
+                        state->birth_year = state->birth_year + 1;
+                        if (state->birth_year > state->current_year) state->birth_year = 1900;
+                        break;
+                    case 2:
+                        state->birth_month = (state->birth_month % 12) + 1;
+                        break;
+                    case 3:
+                        state->birth_day = state->birth_day + 1;
+                        if (state->birth_day == 0 || state->birth_day > days_in_month[state->birth_month - 1]) {
+                            state->birth_day = 1;
+                        }
+                        break;
+                }
+            }
+            break;
+        case EVENT_ALARM_LONG_PRESS:
+            // if we aren't already in settings mode, put us there.
+            if (state->current_page == 0) {
+                state->current_page++;
+                movement_request_tick_frequency(4);
+            }
+            break;
+        case EVENT_TIMEOUT:
+            // return home if we're on a settings page (this saves our changes when we resign).
+            if (state->current_page != 0) {
+                movement_move_to_face(0);
+            }
+        default:
+            break;
+    }
+
+    return true;
+}
+
+void day_one_face_resign(movement_settings_t *settings, void *context) {
+    (void) settings;
+    day_one_state_t *state = (day_one_state_t *)context;
+
+    movement_request_tick_frequency(1);
+
+    // if the user changed their birth date, store it to the birth date register
+    if (state->birthday_changed) {
+        day_one_state_t *state = (day_one_state_t *)context;
+        movement_birthdate_t movement_birthdate = (movement_birthdate_t) watch_get_backup_data(2);
+        movement_birthdate.bit.year = state->birth_year;
+        movement_birthdate.bit.month = state->birth_month;
+        movement_birthdate.bit.day = state->birth_day;
+        watch_store_backup_data(movement_birthdate.reg, 2);
+        state->birthday_changed = false;
+    }
+}
diff --git a/movement/watch_faces/complications/day_one_face.h b/movement/watch_faces/complications/day_one_face.h
new file mode 100644
index 00000000..06c7816e
--- /dev/null
+++ b/movement/watch_faces/complications/day_one_face.h
@@ -0,0 +1,31 @@
+#ifndef DAY_ONE_FACE_H_
+#define DAY_ONE_FACE_H_
+
+#include "movement.h"
+
+// The Day One face is designed to count upwards from the wearer's date of birth. It also functions as an
+// interface for setting the birth date register, which other watch faces can use for various purposes.
+
+typedef struct {
+    uint8_t current_page;
+    uint16_t current_year;
+    uint16_t birth_year;
+    uint8_t birth_month;
+    uint8_t birth_day;
+    bool birthday_changed;
+} day_one_state_t;
+
+void day_one_face_setup(movement_settings_t *settings, void ** context_ptr);
+void day_one_face_activate(movement_settings_t *settings, void *context);
+bool day_one_face_loop(movement_event_t event, movement_settings_t *settings, void *context);
+void day_one_face_resign(movement_settings_t *settings, void *context);
+
+static const watch_face_t day_one_face = {
+    day_one_face_setup,
+    day_one_face_activate,
+    day_one_face_loop,
+    day_one_face_resign,
+    NULL
+};
+
+#endif // DAY_ONE_FACE_H_