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diff --git a/movement/watch_faces/sensor/accelerometer_data_acquisition_face.h b/movement/watch_faces/sensor/accelerometer_data_acquisition_face.h
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+++ b/movement/watch_faces/sensor/accelerometer_data_acquisition_face.h
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+/*
+ * 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 ACCELEROMETER_DATA_ACQUISITION_FACE_H_
+#define ACCELEROMETER_DATA_ACQUISITION_FACE_H_
+
+#include "movement.h"
+
+#define ACCELEROMETER_DATA_ACQUISITION_INVALID ((uint64_t)(0b11))   // all bits are 1 when the flash is erased
+#define ACCELEROMETER_DATA_ACQUISITION_HEADER ((uint64_t)(0b10))
+#define ACCELEROMETER_DATA_ACQUISITION_DATA ((uint64_t)(0b01))    
+#define ACCELEROMETER_DATA_ACQUISITION_DELETED ((uint64_t)(0b00))   // You can always write a 0 to any 1 bit
+
+typedef union {
+    struct {
+        int16_t temperature_and_type : 16; // high two bits are record type, val & 0xFFF is temperature
+        int8_t char1 : 8;
+        int8_t char2 : 8;
+        int32_t timestamp : 32;
+    } header;
+    struct {
+        int16_t x_accel_and_type : 16;   // high two bits are record type, val & 0x3FFF is x_accel
+        int16_t y_accel : 16;
+        int16_t z_accel : 16;
+        int32_t counter : 16;
+    } data;
+    uint64_t value;
+} accelerometer_data_acquisition_record_t;
+
+typedef enum {
+    ACCELEROMETER_DATA_ACQUISITION_MODE_IDLE,
+    ACCELEROMETER_DATA_ACQUISITION_MODE_COUNTDOWN,
+    ACCELEROMETER_DATA_ACQUISITION_MODE_SENSING,
+    ACCELEROMETER_DATA_ACQUISITION_MODE_SETTINGS,
+} accelerometer_data_acquisition_mode_t;
+
+typedef enum {
+    ACCELEROMETER_DATA_ACQUISITION_SETTINGS_PAGE_SOUND,
+    ACCELEROMETER_DATA_ACQUISITION_SETTINGS_PAGE_DELAY,
+    ACCELEROMETER_DATA_ACQUISITION_SETTINGS_PAGE_REPEAT,
+    // ACCELEROMETER_DATA_ACQUISITION_SETTINGS_PAGE_NAME,
+} accelerometer_data_acquisition_settings_page_t;
+
+typedef struct {
+    // mode
+    accelerometer_data_acquisition_mode_t mode;
+    accelerometer_data_acquisition_settings_page_t settings_page;
+    // current settings
+    uint8_t activity_type_index;   // active activity type
+    bool beep_with_countdown;   // should we beep at the countdown
+    uint8_t countdown_length;   // how many seconds to count down
+    uint16_t repeat_interval;   // how many seconds to wait for a repeat
+    // info about the flash chip
+    int16_t next_available_page;
+    // transient properties
+    uint8_t countdown_ticks;
+    uint8_t repeat_ticks;
+    uint8_t reading_ticks;
+    accelerometer_data_acquisition_record_t records[32];
+    uint16_t pos;
+} accelerometer_data_acquisition_state_t;
+
+void accelerometer_data_acquisition_face_setup(movement_settings_t *settings, uint8_t watch_face_index, void ** context_ptr);
+void accelerometer_data_acquisition_face_activate(movement_settings_t *settings, void *context);
+bool accelerometer_data_acquisition_face_loop(movement_event_t event, movement_settings_t *settings, void *context);
+void accelerometer_data_acquisition_face_resign(movement_settings_t *settings, void *context);
+
+#define accelerometer_data_acquisition_face ((const watch_face_t){ \
+    accelerometer_data_acquisition_face_setup, \
+    accelerometer_data_acquisition_face_activate, \
+    accelerometer_data_acquisition_face_loop, \
+    accelerometer_data_acquisition_face_resign, \
+    NULL, \
+})
+
+#endif // ACCELEROMETER_DATA_ACQUISITION_FACE_H_