Add save_load_face.

movement/make/Makefile

@@ -118,6 +118,7 @@ SRCS += \
   ../watch_faces/complication/flashlight_face.c \
   ../watch_faces/clock/decimal_time_face.c \
   ../watch_faces/clock/wyoscan_face.c \
+  ../watch_faces/settings/save_load_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

@@ -95,6 +95,7 @@
 #include "flashlight_face.h"
 #include "decimal_time_face.h"
 #include "wyoscan_face.h"
+#include "save_load_face.h"
 // New includes go above this line.
 
 #endif // MOVEMENT_FACES_H_

movement/watch_faces/settings/save_load_face.c

@@ -0,0 +1,152 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2023 Wesley Aptekar-Cassels
+ *
+ * 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 "save_load_face.h"
+#include "filesystem.h"
+
+static void save(save_load_state_t *state) {
+    savefile_t savefile = {
+        1,
+        watch_get_backup_data(0),
+        watch_get_backup_data(1),
+        watch_get_backup_data(2),
+        watch_get_backup_data(3),
+        watch_get_backup_data(4),
+        watch_get_backup_data(5),
+        watch_get_backup_data(6),
+        watch_get_backup_data(7),
+        watch_rtc_get_date_time(),
+    };
+    state->slot[state->index] = savefile;
+    char filename[23];
+    sprintf(filename, "save_load_face_%d.bin", state->index);
+    filesystem_write_file(filename, (char*)&savefile, sizeof(savefile_t));
+}
+
+static void load(save_load_state_t *state, movement_settings_t *settings) {
+    watch_store_backup_data(state->slot[state->index].b0, 0);
+    settings->reg = state->slot[state->index].b0;
+    watch_store_backup_data(state->slot[state->index].b1, 1);
+    watch_store_backup_data(state->slot[state->index].b2, 2);
+    watch_store_backup_data(state->slot[state->index].b3, 3);
+    watch_store_backup_data(state->slot[state->index].b4, 4);
+    watch_store_backup_data(state->slot[state->index].b5, 5);
+    watch_store_backup_data(state->slot[state->index].b6, 6);
+    watch_store_backup_data(state->slot[state->index].b7, 7);
+}
+
+static void load_saves_to_state(save_load_state_t *state) {
+    for (uint8_t i = 0; i < SAVE_LOAD_SLOTS; i++) {
+        char filename[23];
+        sprintf(filename, "save_load_face_%d.bin", i);
+        if (filesystem_get_file_size(filename) != sizeof(savefile_t)) {
+            state->slot[i].version = 0;
+            continue;
+        }
+        filesystem_read_file(filename, (char*)&state->slot[i], sizeof(savefile_t));
+        if (state->slot[i].version != 1) {
+            state->slot[i].version = 0;
+        }
+    }
+}
+
+void save_load_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(save_load_state_t));
+        memset(*context_ptr, 0, sizeof(save_load_state_t));
+    }
+}
+
+void save_load_face_activate(movement_settings_t *settings, void *context) {
+    (void) settings;
+    save_load_state_t *state = (save_load_state_t *)context;
+    state->index = 0;
+    state->update_timeout = 0;
+    load_saves_to_state(state);
+}
+
+static void update_display(save_load_state_t *state) {
+    char buf[11];
+    sprintf(buf, "SL %1d", state->index);
+    watch_display_string(buf, 0);
+
+    if (state->slot[state->index].version) {
+        sprintf(buf, "%02d%02d%02d", state->slot[state->index].rtc.unit.year + 20, state->slot[state->index].rtc.unit.month, state->slot[state->index].rtc.unit.day);
+        watch_display_string(buf, 4);
+    } else {
+        watch_display_string("no dat", 4);
+    }
+}
+
+bool save_load_face_loop(movement_event_t event, movement_settings_t *settings, void *context) {
+    save_load_state_t *state = (save_load_state_t *)context;
+
+    switch (event.event_type) {
+        case EVENT_ACTIVATE:
+            update_display(state);
+            break;
+        case EVENT_TICK:
+            if (state->update_timeout) {
+                if (!--state->update_timeout) {
+                    update_display(state);
+                }
+            }
+            break;
+        case EVENT_ALARM_BUTTON_UP:
+            state->index = (state->index + 1) % SAVE_LOAD_SLOTS;
+            update_display(state);
+            break;
+        case EVENT_LIGHT_LONG_PRESS:
+            save(state);
+            watch_display_string("Saved ", 4);
+            state->update_timeout = 3;
+            break;
+        case EVENT_ALARM_LONG_PRESS:
+            if (state->slot[state->index].version) {
+                load(state, settings);
+                watch_display_string("Loaded", 4);
+                state->update_timeout = 3;
+            }
+            break;
+        case EVENT_TIMEOUT:
+            movement_move_to_face(0);
+            break;
+        default:
+            return movement_default_loop_handler(event, settings);
+    }
+
+    return true;
+}
+
+void save_load_face_resign(movement_settings_t *settings, void *context) {
+    (void) settings;
+    (void) context;
+
+    // handle any cleanup before your watch face goes off-screen.
+}
+

movement/watch_faces/settings/save_load_face.h

@@ -0,0 +1,82 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2023 Wesley Aptekar-Cassels
+ *
+ * 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 SAVE_LOAD_FACE_H_
+#define SAVE_LOAD_FACE_H_
+
+#include "movement.h"
+#include "watch_rtc.h"
+
+/*
+ * Save/Load face
+ *
+ * This allows you to save your settings (including location, birthday, etc) to
+ * LFS, which is not wiped when firmware is updated, and then load them again.
+ * It provides multiple save slots (four by default).
+ *
+ * Press ALARM to cycle through save slots. Long press LIGHT to save to the
+ * current slot. Long press ALARM to load from the current slot. The date that
+ * a save was taken is shown in YYMMDD format , or "no dat" if the slot is
+ * empty. The index of the current slot is displayed in the upper right corner.
+ *
+ * While the time that a save was taken is recorded, it is not currently
+ * restored.
+ */
+
+typedef struct savefile {
+    uint8_t version;
+    uint32_t b0;
+    uint32_t b1;
+    uint32_t b2;
+    uint32_t b3;
+    uint32_t b4;
+    uint32_t b5;
+    uint32_t b6;
+    uint32_t b7;
+    watch_date_time rtc;
+} savefile_t;
+
+#define SAVE_LOAD_SLOTS 4
+
+typedef struct {
+    uint8_t index;
+    uint8_t update_timeout;
+    savefile_t slot[SAVE_LOAD_SLOTS];
+} save_load_state_t;
+
+void save_load_face_setup(movement_settings_t *settings, uint8_t watch_face_index, void ** context_ptr);
+void save_load_face_activate(movement_settings_t *settings, void *context);
+bool save_load_face_loop(movement_event_t event, movement_settings_t *settings, void *context);
+void save_load_face_resign(movement_settings_t *settings, void *context);
+
+#define save_load_face ((const watch_face_t){ \
+    save_load_face_setup, \
+    save_load_face_activate, \
+    save_load_face_loop, \
+    save_load_face_resign, \
+    NULL, \
+})
+
+#endif // SAVE_LOAD_FACE_H_
+