Add mutexes for I2C access in multiple drivers and update cursor handling in char_lcd and wires. Adjust task stack sizes for better resource management.

main/drivers/CMakeLists.txt

@@ -6,16 +6,23 @@ set(SOURCES
     "esp_lcd_ili9488/esp_lcd_ili9488.c"
     "bottom_half.cpp"
     "char_lcd.cpp"
+    "game_info.cpp"
     "game_timer.cpp"
+    "hwdata.cpp"
     "i2c_lcd_pcf8574.c"
+    "i2c.cpp"
     "leds.cpp"
+    "nvs.cpp"
+    "perh.cpp"
     "power.cpp"
     "sd.cpp"
     "speaker.cpp"
     "sseg.cpp"
+    "starcode.cpp"
     "state_tracking.cpp"
     "tft.cpp"
     "wires.cpp"
+    "wlvgl.cpp"
 )
 
 target_sources(${COMPONENT_LIB} PRIVATE ${SOURCES})

main/drivers/SparkFunBQ27441/SparkFunBQ27441.cpp

@@ -32,6 +32,7 @@ Arduino Uno (any 'duino should do)
 ******************************************************************************/
 
 #include "SparkFunBQ27441.h"
+#include "../i2c.h"
 
 /*****************************************************************************
  ************************** Initialization Functions *************************
@@ -710,7 +711,9 @@ bool BQ27441::writeExtendedData(uint8_t classID, uint8_t offset, uint8_t * data,
 int16_t BQ27441::i2cReadBytes(uint8_t subAddress, uint8_t * dest, uint8_t count)
 {
 	int16_t timeout = BQ72441_I2C_TIMEOUT;
+	xSemaphoreTake(main_i2c_mutex, portMAX_DELAY);
 	i2c_master_write_read_device(BQ72441_I2C_NUM, _deviceAddress, &subAddress, 1, dest, count, timeout);
+	xSemaphoreGive(main_i2c_mutex);
 	return timeout;
 }
 
@@ -726,7 +729,9 @@ uint16_t BQ27441::i2cWriteBytes(uint8_t subAddress, uint8_t * src, uint8_t count
 		w_buff[i+1] = src[i];
 	}
 
+	xSemaphoreTake(main_i2c_mutex, portMAX_DELAY);
 	esp_err_t ret = i2c_master_write_to_device(BQ72441_I2C_NUM, _deviceAddress, src, count+1, timeout);
+	xSemaphoreGive(main_i2c_mutex);
 	
 	return ret == ESP_OK;
 }

main/drivers/all.cpp

@@ -1,12 +1,11 @@
 #include "all.h"
 
-static const char *TAG = "driver_all";
-static void init_i2c();
-
 void init_drivers() {
     init_i2c();
     // init char_lcd so we can use it to report other initialization errors.
     init_lcd();
+    init_nvs();
+    init_star_code_system();
     // init the bottom half so that we can get user input.
     init_bottom_half();
     init_sd();
@@ -16,36 +15,6 @@ void init_drivers() {
     init_tft();
     init_leds();
     init_power_board();
+
+    set_lcd_header_enabled(true);
 }
-
-/// @brief Initializes I2C_NUM_0. 
-///
-/// This is hooked up the to:
-///  - The bottom half
-///  - The char lcd
-///  - The power board
-///  - The MPU6050
-///  - The PERH port
-///  - The Capacitive Touch Panel
-static void init_i2c() {
-    ESP_LOGI(TAG, "Initializing i2c...");
-
-    i2c_config_t conf = {
-        .mode = I2C_MODE_MASTER,
-        .sda_io_num = GPIO_NUM_5,
-        .scl_io_num = GPIO_NUM_6,
-        .sda_pullup_en = GPIO_PULLUP_DISABLE,
-        .scl_pullup_en = GPIO_PULLUP_DISABLE,
-        // .sda_pullup_en = GPIO_PULLUP_ENABLE,
-        // .scl_pullup_en = GPIO_PULLUP_ENABLE,
-        .master = {
-            .clk_speed = 100*1000,
-        },
-        .clk_flags = I2C_SCLK_SRC_FLAG_FOR_NOMAL
-    };
-
-    ESP_ERROR_CHECK(i2c_param_config(I2C_NUM_0, &conf));
-    ESP_ERROR_CHECK(i2c_driver_install(I2C_NUM_0, conf.mode, 0, 0, 0));
-
-    ESP_LOGI(TAG, "i2c initialized!");
-}

main/drivers/all.h

@@ -1,14 +1,20 @@
 #ifndef ALL_H
 #define ALL_H
 
-#include "char_lcd.h"
 #include "bottom_half.h"
+#include "char_lcd.h"
+#include "game_timer.h"
+#include "i2c.h"
+#include "leds.h"
+#include "nvs.h"
+#include "power.h"
 #include "sd.h"
 #include "speaker.h"
-#include "game_timer.h"
+#include "sseg.h"
-#include "drivers/tft.h"
+#include "starcode.h"
-#include "drivers/leds.h"
+#include "state_tracking.h"
-#include "drivers/power.h"
+#include "tft.h"
+#include "wires.h"
 
 void init_drivers();
 

main/drivers/bottom_half.cpp

@@ -1,6 +1,7 @@
 #include "bottom_half.h"
 #include <esp_log.h>
 #include "state_tracking.h"
+#include "starcode.h"
 
 static const char *TAG = "bottom_half";
 
@@ -30,6 +31,11 @@ static void receive_keypad();
 static void receive_button_switch();
 static void receive_touch();
 
+static bool replay_handler(const char* event, char* arg) {
+    // no reply neccesary
+    return false;
+}
+
 // TODO: add intrupt on bottom half delta pin
 // static void IRAM_ATTR gpio_isr_handler(void* arg)
 // {
@@ -40,8 +46,14 @@ static void receive_touch();
 void init_bottom_half() {
     ESP_LOGI(TAG, "Initializing bottom half...");
 
-    ESP_ERROR_CHECK(gpio_set_direction(BOTTOM_PIN_INTERUPT, GPIO_MODE_INPUT));
+    gpio_config_t int_conf = {
-    ESP_ERROR_CHECK(gpio_set_pull_mode(BOTTOM_PIN_INTERUPT, GPIO_PULLUP_ONLY));
+        .pin_bit_mask = 1ULL << BOTTOM_PIN_INTERUPT,
+        .mode = GPIO_MODE_INPUT,
+        .pull_up_en = GPIO_PULLUP_ENABLE,
+        .pull_down_en = GPIO_PULLDOWN_DISABLE,
+        .intr_type = GPIO_INTR_DISABLE,
+    };
+    ESP_ERROR_CHECK(gpio_config(&int_conf));
 
     // TODO: do interupt stuff.
     // ESP_ERROR_CHECK(gpio_intr_enable(BOTTOM_PIN_INTERUPT));
@@ -57,25 +69,34 @@ void init_bottom_half() {
 
     xTaskCreate(poll_bottom_task, "poll_bottom", 4096, NULL, 10, NULL);
 
+    register_replay_fn(replay_handler);
+
     ESP_LOGI(TAG, "Bottom half initialized!");
 }
 
 static uint8_t receive_delta(void) {
     uint8_t reg = 1;
-    buf[0] = 0;
+    xSemaphoreTake(main_i2c_mutex, portMAX_DELAY);
-    ESP_ERROR_CHECK_WITHOUT_ABORT(i2c_master_write_read_device(BOTTOM_I2C_NUM, BOTTOM_I2C_ADDR, &reg, 1, buf, 1, (100 / portTICK_PERIOD_MS)));
+    esp_err_t result = i2c_master_write_read_device(BOTTOM_I2C_NUM, BOTTOM_I2C_ADDR, &reg, 1, buf, 1, (100 / portTICK_PERIOD_MS));
+    ESP_ERROR_CHECK_WITHOUT_ABORT(result);
+    if (result != ESP_OK) {
+        return 0;
+    }
     return buf[0];
 }
 
 static void receive_keypad(void) {
+    // TODO: change the bottom half polling scheme from a state-based protocol to an event based protocol
     uint8_t reg = 2;
-    buf[0] = 0;
+    xSemaphoreTake(main_i2c_mutex, portMAX_DELAY);
-    buf[1] = 0;
+    esp_err_t result = i2c_master_write_read_device(BOTTOM_I2C_NUM, BOTTOM_I2C_ADDR, &reg, 1, buf, 2, (100 / portTICK_PERIOD_MS));
-    ESP_ERROR_CHECK_WITHOUT_ABORT(i2c_master_write_read_device(BOTTOM_I2C_NUM, BOTTOM_I2C_ADDR, &reg, 1, buf, 2, (100 / portTICK_PERIOD_MS)));
+    xSemaphoreGive(main_i2c_mutex);
+    ESP_ERROR_CHECK_WITHOUT_ABORT(result);
+    if (result != ESP_OK) {
+        return;
+    }
     uint16_t new_keypad_state = buf[0] | (buf[1] << 8);
-
     uint16_t just_pressed = new_keypad_state & ~keypad_state;
-    keypad_pressed |= just_pressed;
     if (is_state_tracking() && just_pressed) {
         char buf[6];
         sprintf(buf, "%d", just_pressed);
@@ -83,19 +104,29 @@ static void receive_keypad(void) {
     }
 
     uint16_t just_released = ~new_keypad_state & keypad_state;
-    keypad_released |= just_released;
     if (is_state_tracking() && just_released) {
         char buf[6];
         sprintf(buf, "%d", just_released);
         event_occured("KP_RELEASE", buf);
     }
 
+    star_code_handle_keypad(&just_pressed, &just_released);
+
+    keypad_pressed |= just_pressed;
+    keypad_released |= just_released;
     keypad_state = new_keypad_state;
 }
 
 static void receive_button_switch(void) {
     uint8_t reg = 3;
-    ESP_ERROR_CHECK_WITHOUT_ABORT(i2c_master_write_read_device(BOTTOM_I2C_NUM, BOTTOM_I2C_ADDR, &reg, 1, buf, 2, (100 / portTICK_PERIOD_MS)));
+    xSemaphoreTake(main_i2c_mutex, portMAX_DELAY);
+    esp_err_t result = i2c_master_write_read_device(BOTTOM_I2C_NUM, BOTTOM_I2C_ADDR, &reg, 1, buf, 2, (100 / portTICK_PERIOD_MS));
+    xSemaphoreGive(main_i2c_mutex);
+    ESP_ERROR_CHECK_WITHOUT_ABORT(result);
+    if (result != ESP_OK) {
+        return;
+    }
+
     uint8_t new_button_state = buf[1] & 0xF;
     uint8_t new_switch_state = (~buf[0]) & 0xF;
     uint8_t new_switch_touch_state = (buf[1] >> 4) & 0xF;
@@ -161,7 +192,9 @@ static void receive_button_switch(void) {
 static void receive_touch(void) {
     uint8_t reg = 4;
     buf[0] = 0;
+    xSemaphoreTake(main_i2c_mutex, portMAX_DELAY);
     ESP_ERROR_CHECK_WITHOUT_ABORT(i2c_master_write_read_device(BOTTOM_I2C_NUM, BOTTOM_I2C_ADDR, &reg, 1, buf, 1, (100 / portTICK_PERIOD_MS)));
+    xSemaphoreGive(main_i2c_mutex);
     bool new_touch_state = buf[0] != 0;
 
     bool just_pressed = new_touch_state & !touch_state;
@@ -210,7 +243,8 @@ void clear_all_pressed_released(void) {
     touch_released = 0;
 }
 
-static bool _take_key(KeypadKey* kp, uint16_t* keypad_bitfield) {
+// TODO: this is public, but it won't need to be after the event-based protocol refactor
+bool take_key(KeypadKey* kp, uint16_t* keypad_bitfield) {
     for (int i = 0; i < 16; i++) {
         int bit_selector = (1 << i);
         if ((*keypad_bitfield) & bit_selector) {
@@ -226,10 +260,10 @@ static bool _take_key(KeypadKey* kp, uint16_t* keypad_bitfield) {
 }
 
 bool get_keypad_pressed(KeypadKey* kp) {
-    return _take_key(kp, &keypad_pressed);
+    return take_key(kp, &keypad_pressed);
 }
 bool get_keypad_released(KeypadKey* kp) {
-    return _take_key(kp, &keypad_released);
+    return take_key(kp, &keypad_released);
 }
 
 char char_of_keypad_key(KeypadKey kp) {

main/drivers/bottom_half.h

@@ -6,7 +6,7 @@
 
 #define BOTTOM_I2C_NUM I2C_NUM_0
 #define BOTTOM_I2C_ADDR 126
-#define BOTTOM_PIN_INTERUPT GPIO_NUM_0
+#define BOTTOM_PIN_INTERUPT GPIO_NUM_13
 
 #define DELTA_BIT_KP 0
 #define DELTA_BIT_BUTTON_SWITCH 1
@@ -14,22 +14,22 @@
 
 /// @brief An enum for the possible keypad buttons.
 typedef enum {
-    k1 = 0,
+    kd = 0,
-    k4 = 1,
+    pound = 1,
-    k7 = 2,
+    k0 = 2,
     star = 3,
-    k2 = 4,
+    kc = 4,
-    k5 = 5,
+    k9 = 5,
     k8 = 6,
-    k0 = 7,
+    k7 = 7,
-    k3 = 8,
+    kb = 8,
     k6 = 9,
-    k9 = 10,
+    k5 = 10,
-    pound = 11,
+    k4 = 11,
     ka = 12,
-    kb = 13,
+    k3 = 13,
-    kc = 14,
+    k2 = 14,
-    kd = 15,
+    k1 = 15,
 } KeypadKey;
 
 /// @brief An enum for the possible buttons.
@@ -126,6 +126,14 @@ bool get_touch_pressed();
 /// @return true if the touch sensor was just released
 bool get_touch_released();
 
+/// @brief A helper function for internal use.
+/// 
+/// Takes one key from the bitfield and sets the `kp` variable accordingly if the bitfield is not 0.
+/// @param kp Out. The keypad key to set.
+/// @param keypad_bitfield A pointer to the keypad bitfield to take a key from
+/// @return true if a key was taken from the bitfield
+bool take_key(KeypadKey* kp, uint16_t* keypad_bitfield);
+
 // TODO: add touch sensor for switch
 
 #endif /* BOTTOM_HALF_HPP */

main/drivers/char_lcd.cpp

@@ -3,141 +3,247 @@
 #include "./i2c_lcd_pcf8574.h"
 #include <esp_log.h>
 #include "state_tracking.h"
+#include <cstring>
+#include "power.h"
+#include "starcode.h"
+#include "game_info.h"
 
 i2c_lcd_pcf8574_handle_t lcd;
+SemaphoreHandle_t lcd_mutex;
+
+static volatile bool cursor_visible = false;
+static volatile uint8_t cursor_resting_row = 0;
+static volatile uint8_t cursor_resting_col = 0;
+
+static volatile bool header_enabled = false;
 
 static const char *TAG = "char_lcd";
+static const char* EMPTY_ROW = "                    ";
 
 static char buf[65];
 
+// TODO: move this to power.cpp
+static void monitor_battery_task(void* _arg) {
+    (void) _arg;
+
+    while (true) {
+        vTaskDelay(pdMS_TO_TICKS(1'000));
+        lcd_print_header_bat();
+    }
+}
+
+static bool replay_handler(const char* event, char* arg) {
+    if (strcmp(event, "LCD_CLEAR") == 0) {
+        lcd_clear();
+    }
+    else if (strcmp(event, "LCD_SET_DISPLAY") == 0) {
+        lcd_set_display(strcmp(arg, "true") == 0);
+    }
+    else if (strcmp(event, "LCD_CURSOR_VIS") == 0) {
+        lcd_set_cursor_vis(strcmp(arg, "true") == 0);
+    }
+    else if (strcmp(event, "LCD_CURSOR_BLINK") == 0) {
+        lcd_set_cursor_blink(strcmp(arg, "true") == 0);
+    }
+    else if (strcmp(event, "LCD_SCROLL_DISPLAY_LEFT") == 0) {
+        lcd_scroll_display_left();
+    }
+    else if (strcmp(event, "LCD_SCROLL_DISPLAY_RIGHT") == 0) {
+        lcd_scroll_display_right();
+    }
+    else if (strcmp(event, "LCD_LEFT_TO_RIGHT") == 0) {
+        lcd_left_to_right();
+    }
+    else if (strcmp(event, "LCD_RIGHT_TO_LEFT") == 0) {
+        lcd_right_to_left();
+    }
+    else if (strcmp(event, "LCD_AUTOSCROLL") == 0) {
+        lcd_set_autoscroll(strcmp(arg, "true") == 0);
+    }
+    else if (strcmp(event, "LCD_BACKLIGHT") == 0) {
+        lcd_set_backlight(strcmp(arg, "true") == 0);
+    }
+    else if (strcmp(event, "LCD_CREATE_CHAR") == 0) {
+        char* location_str = strtok(arg, ",");
+        uint8_t location = atoi(location_str);
+
+        uint8_t charmap[8];
+        for (int i = 0; i < 8; i++) {
+            char* str = strtok(NULL, ",");
+            charmap[i] = atoi(str);
+        }
+
+        lcd_create_char(location, charmap);
+    }
+    else if (strcmp(event, "LCD_PRINT") == 0) {
+        char* str = strtok(arg, ",");
+        uint8_t row = atoi(str);
+        str = strtok(NULL, ",");
+        uint8_t col = atoi(str);
+        // get remaining part of string.
+        str = strtok(NULL, "");
+
+        // TODO: handle \r and \n
+        lcd_print(row, col, str);
+    } else {
+        return false;
+    }
+
+    return true;
+}
+
 void init_lcd() {
     ESP_LOGI(TAG, "Initializing LCD...");
 
+    lcd_mutex = xSemaphoreCreateMutex();
+    assert(lcd_mutex != NULL);
+
     lcd_init(&lcd, LCD_ADDR, CHAR_LCD_I2C_NUM);
     lcd_begin(&lcd, LCD_COLS, LCD_ROWS);
 
-    lcd_set_backlight(&lcd, 255);
+    lcd_set_backlight_to(&lcd, 1);
+
+    register_replay_fn(replay_handler);
+
+    xTaskCreate(monitor_battery_task, "bat_monitor", 1024*2, nullptr, 0, nullptr);
 
     ESP_LOGI(TAG, "LCD initialized!");
 }
 
-void lcd_clear() {
+void lcd_clear(bool no_lock) {
-    lcd_clear(&lcd);
+    if (!header_enabled) {
+        if (!no_lock) xSemaphoreTake(lcd_mutex, portMAX_DELAY);
+        lcd_clear(&lcd);
+        if (!no_lock) xSemaphoreGive(lcd_mutex);
 
-    if (is_state_tracking()) {
+        if (is_state_tracking()) {
-        event_occured("LCD_CLEAR", NULL);
+            event_occured("LCD_CLEAR", NULL);
+        }
+    } else {
+        if (!no_lock) xSemaphoreTake(lcd_mutex, portMAX_DELAY);
+        lcd_print(1, 0, EMPTY_ROW, true);
+        lcd_print(2, 0, EMPTY_ROW, true);
+        lcd_print(3, 0, EMPTY_ROW, true);
+        if (!no_lock) xSemaphoreGive(lcd_mutex);
     }
 }
 
-void lcd_cursor_home() {
+void lcd_set_display(bool display,  bool no_lock) {
-    lcd_home(&lcd);
+    if (!no_lock) xSemaphoreTake(lcd_mutex, portMAX_DELAY);
-
-    if (is_state_tracking()) {
-        event_occured("LCD_CURSOR", "0,0");
-    }
-}
-
-void lcd_set_cursor_pos(uint8_t col, uint8_t row) {
-    lcd_set_cursor(&lcd, col, row);
-
-    if (is_state_tracking()) {
-        sprintf(buf, "%d,%d", col, row);
-        event_occured("LCD_CURSOR", buf);
-    }
-}
-
-void lcd_set_display(bool display) {
     if (display) {
         lcd_display(&lcd);
     } else {
         lcd_no_display(&lcd);
     }
+    if (!no_lock) xSemaphoreGive(lcd_mutex);
 
     if (is_state_tracking()) {
         event_occured("LCD_SET_DISPLAY", display ? "true" : "false");
     }
 }
 
-void lcd_set_cursor_vis(bool cursor) {
+void lcd_set_cursor_vis(bool cursor, bool no_lock) {
+    if (!no_lock) xSemaphoreTake(lcd_mutex, portMAX_DELAY);
     if (cursor) {
         lcd_cursor(&lcd);
     } else {
         lcd_no_cursor(&lcd);
     }
+    if (!no_lock) xSemaphoreGive(lcd_mutex);
+
+    cursor_visible = cursor;
 
     if (is_state_tracking()) {
         event_occured("LCD_CURSOR_VIS", cursor ? "true" : "false");
     }
 }
 
-void lcd_set_cursor_blink(bool blink) {
+void lcd_set_cursor_blink(bool blink, bool no_lock) {
+    if (!no_lock) xSemaphoreTake(lcd_mutex, portMAX_DELAY);
     if (blink) {
         lcd_blink(&lcd);
     } else {
         lcd_no_blink(&lcd);
     }
+    if (!no_lock) xSemaphoreGive(lcd_mutex);
 
     if (is_state_tracking()) {
         event_occured("LCD_CURSOR_BLINK", blink ? "true" : "false");
     }
 }
 
-void lcd_scroll_display_left() {
+void lcd_scroll_display_left(bool no_lock) {
+    if (!no_lock) xSemaphoreTake(lcd_mutex, portMAX_DELAY);
     lcd_scroll_display_left(&lcd);
+    if (!no_lock) xSemaphoreGive(lcd_mutex);
 
     if (is_state_tracking()) {
         event_occured("LCD_SCROLL_DISPLAY_LEFT", NULL);
     }
 }
-void lcd_scroll_display_right() {
+void lcd_scroll_display_right(bool no_lock) {
+    if (!no_lock) xSemaphoreTake(lcd_mutex, portMAX_DELAY);
     lcd_scroll_display_right(&lcd);
+    if (!no_lock) xSemaphoreGive(lcd_mutex);
 
     if (is_state_tracking()) {
         event_occured("LCD_SCROLL_DISPLAY_RIGHT", NULL);
     }
 }
 
-void lcd_left_to_right() {
+void lcd_left_to_right(bool no_lock) {
+    if (!no_lock) xSemaphoreTake(lcd_mutex, portMAX_DELAY);
     lcd_left_to_right(&lcd);
+    if (!no_lock) xSemaphoreGive(lcd_mutex);
 
     if (is_state_tracking()) {
-        event_occured("LCD_SCROLL_LEFT_TO_RIGHT", NULL);
+        event_occured("LCD_LEFT_TO_RIGHT", NULL);
     }
 }
-void lcd_right_to_left() {
+void lcd_right_to_left(bool no_lock) {
+    if (!no_lock) xSemaphoreTake(lcd_mutex, portMAX_DELAY);
     lcd_right_to_left(&lcd);
+    if (!no_lock) xSemaphoreGive(lcd_mutex);
 
     if (is_state_tracking()) {
-        event_occured("LCD_SCROLL_RIGHT_TO_LEFT", NULL);
+        event_occured("LCD_RIGHT_TO_LEFT", NULL);
     }
 }
 
-void lcd_set_autoscroll(bool autoscroll) {
+void lcd_set_autoscroll(bool autoscroll, bool no_lock) {
+    if (!no_lock) xSemaphoreTake(lcd_mutex, portMAX_DELAY);
     if (autoscroll) {
         lcd_autoscroll(&lcd);
     } else {
         lcd_no_autoscroll(&lcd);
     }
+    if (!no_lock) xSemaphoreGive(lcd_mutex);
 
     if (is_state_tracking()) {
         event_occured("LCD_AUTOSCROLL", autoscroll ? "true" : "false");
     }
 }
 
-void lcd_set_backlight(uint8_t brightness) {
+void lcd_set_backlight(bool backlight, bool no_lock) {
-    lcd_set_backlight(&lcd, brightness);
+    if (!no_lock) xSemaphoreTake(lcd_mutex, portMAX_DELAY);
+    lcd_set_backlight_to(&lcd, backlight);
+    if (!no_lock) xSemaphoreGive(lcd_mutex);
 
     if (is_state_tracking()) {
-        sprintf(buf, "%d", brightness);
+        sprintf(buf, "%d", backlight);
-        event_occured("LCD_BACKLIGHT", buf);
+        event_occured("LCD_BACKLIGHT", backlight ? "true" : "false");
     }
 }
 
-void lcd_create_char(uint8_t location, uint8_t* charmap) {
+void lcd_create_char(uint8_t location, const uint8_t charmap[], bool no_lock) {
+    if (location == 8) location = 0;
+
+    if (!no_lock) xSemaphoreTake(lcd_mutex, portMAX_DELAY);
     lcd_create_char(&lcd, location, charmap);
+    if (!no_lock) xSemaphoreGive(lcd_mutex);
 
     if (is_state_tracking()) {
-        snprintf(buf, 65,
+        snprintf(buf, sizeof(buf),
             "%d,%d,%d,%d,%d,%d,%d,%d,%d", location, 
             charmap[0], charmap[1], charmap[2], charmap[3], charmap[4], charmap[5], charmap[6], charmap[7]
         );
@@ -145,24 +251,88 @@ void lcd_create_char(uint8_t location, uint8_t* charmap) {
     }
 }
 
-void lcd_write(uint8_t value) {
+void lcd_print(uint8_t row, uint8_t col, const char* str, bool no_lock) {
-    lcd_write(&lcd, value);
+    if (!no_lock) xSemaphoreTake(lcd_mutex, portMAX_DELAY);
-
+    lcd_set_cursor(&lcd, col, row);
-    if (is_state_tracking()) {
-        sprintf(buf, "%d", value);
-        event_occured("LCD_WRITE", buf);
-    }
-}
-
-void lcd_print(const char* str) {
     lcd_print(&lcd, str);
+    
+    if (cursor_visible) {
+        lcd_set_cursor(&lcd, cursor_resting_col, cursor_resting_row);
+    }
+    
+    if (!no_lock) xSemaphoreGive(lcd_mutex);
 
     if (is_state_tracking()) {
-        event_occured("LCD_PRINT", str);
+        // TODO: handle \r and \n and others
+        snprintf(buf, sizeof(buf), "%d,%d,%s", row, col, str);
+        event_occured("LCD_PRINT", buf);
     }
 }
 
-void lcd_print(uint8_t col, uint8_t row, const char* str) {
+void set_lcd_header_enabled(bool enable) {
-    lcd_set_cursor_pos(col, row);
+    bool old_header_enabled = header_enabled;
-    lcd_print(str);
+    header_enabled = enable;
+
+    // update header in response to enabling/disabling the header
+    if (enable && !old_header_enabled) {
+        lcd_print_header();
+    } else if (!enable && old_header_enabled) {
+        lcd_print(0, 0, EMPTY_ROW);
+    }
 }
+
+bool lcd_header_enabled() {
+    return header_enabled;
+}
+
+void lcd_print_header() {
+    lcd_print_header_star_code();
+    lcd_print_header_step();
+    lcd_print_header_bat();
+}
+
+void lcd_do_splash() {
+    const uint8_t custom_char[6][8] = {
+        { 0x01, 0x01, 0x02, 0x02, 0x07, 0x07, 0x0F, 0x0D },
+        { 0x10, 0x10, 0x18, 0x18, 0x1C, 0x0C, 0x0E, 0x06 },
+        { 0x00, 0x00, 0x01, 0x01, 0x03, 0x03, 0x07, 0x07 },
+        { 0x19, 0x1B, 0x13, 0x17, 0x07, 0x0F, 0x0F, 0x1F },
+        { 0x13, 0x1B, 0x1F, 0x1F, 0x00, 0x1F, 0x1F, 0x1F },
+        { 0x00, 0x00, 0x10, 0x10, 0x00, 0x18, 0x1C, 0x1C },
+    };
+
+    // TODO: make the lcd_lib somehow support the custom character 0 which would otherwise be a null terminator
+    xSemaphoreTake(lcd_mutex, portMAX_DELAY);
+    lcd_create_char(1, custom_char[0], true);
+    lcd_create_char(2, custom_char[1], true);
+    lcd_create_char(3, custom_char[2], true);
+    lcd_create_char(4, custom_char[3], true);
+    lcd_create_char(5, custom_char[4], true);
+    lcd_create_char(6, custom_char[5], true);
+
+    lcd_print(1, 6, "\x01\x02Marino", true);
+    lcd_print(2, 5, "\x03\x04\x05\x06""DEV", true);
+    xSemaphoreGive(lcd_mutex);
+}
+
+bool lcd_lock(uint32_t ticks_to_wait) {
+    return xSemaphoreTake(lcd_mutex, ticks_to_wait);
+}
+
+void lcd_unlock() {
+    xSemaphoreGive(lcd_mutex);
+}
+
+void lcd_set_cursor_resting_position(uint8_t row, uint8_t col) {
+    cursor_resting_row = row;
+    cursor_resting_col = col;
+}
+
+void lcd_get_cursor_resting_position(uint8_t* row, uint8_t* col) {
+    if (row) *row = cursor_resting_row;
+    if (col) *col = cursor_resting_col;
+}
+
+bool lcd_is_cursor_visible() {
+    return cursor_visible;
+}

main/drivers/char_lcd.h

@@ -6,56 +6,91 @@
 #define CHAR_LCD_I2C_NUM I2C_NUM_0
 
 #define LCD_ADDR 0x27
-#define LCD_COLS 20
 #define LCD_ROWS 4
+#define LCD_COLS 20
 
-/// Initializes the 2004 Character LCD
+/// @brief Initializes the 2004 Character LCD
 void init_lcd();
 
-/// Clear the LCD
+/// @brief Clear the LCD
-void lcd_clear();
+void lcd_clear(bool no_lock = false);
 
-/// Move cursor to home position
+/// @brief Move cursor to home position
-void lcd_cursor_home();
+void lcd_cursor_home(bool no_lock = false);
 
-/// Set cursor position
+/// @brief Turn the display on/off
-void lcd_set_cursor_pos(uint8_t col, uint8_t row);
+void lcd_set_display(bool display, bool no_lock = false);
 
-/// Turn the display on/off
+/// @brief Turn the cursor's visibility on/off
-void lcd_set_display(bool display);
+void lcd_set_cursor_vis(bool cursor, bool no_lock = false);
 
-/// Turn the cursor's visibility on/off
+/// @brief Turn blinking cursor on/off
-void lcd_set_cursor_vis(bool cursor);
+void lcd_set_cursor_blink(bool blink, bool no_lock = false);
 
-/// Turn blinking cursor on/off
+/// @brief Scroll the display left
-void lcd_set_cursor_blink(bool blink);
+void lcd_scroll_display_left(bool no_lock = false);
+/// @brief Scroll the display right
+void lcd_scroll_display_right(bool no_lock = false);
 
-/// Scroll the display left
+/// @brief Set the text to flows automatically left to right
-void lcd_scroll_display_left();
+void lcd_left_to_right(bool no_lock = false);
-/// Scroll the display right
+/// @brief Set the text to flows automatically right to left
-void lcd_scroll_display_right();
+void lcd_right_to_left(bool no_lock = false);
 
-/// Set the text to flows automatically left to right
+/// @brief Turn on/off autoscroll
-void lcd_left_to_right();
+void lcd_set_autoscroll(bool autoscroll, bool no_lock = false);
-/// Set the text to flows automatically right to left
-void lcd_right_to_left();
 
-// Turn on/off autoscroll
+/// @brief Set backlight brightness
-void lcd_set_autoscroll(bool autoscroll);
+void lcd_set_backlight(bool backlight, bool no_lock = false);
 
-// Set backlight brightness
+/// @brief Create a custom character. You get 8 custom characters.
-void lcd_set_backlight(uint8_t brightness);
+/// You can print custom characters by using escape characters in strings:
+/// use '\x01' - '\x07' for custom characters 1-7. Use '\x08' for custom char 0.
+void lcd_create_char(uint8_t location, const uint8_t charmap[], bool no_lock = false);
 
-// Create a custom character
+/// @brief Print a string to the LCD at a given pos. 
-void lcd_create_char(uint8_t location, uint8_t charmap[]);
+/// @param row the row the print the string at.
+/// @param col the column to print the string at.
+/// @param str the string to print.
+void lcd_print(uint8_t row, uint8_t col, const char* str, bool no_lock = false);
 
-// Write a character to the LCD
+/// @brief Enables or disables the header on the LCD.
-void lcd_write(uint8_t value);
+/// @param enable `true` to enable the header, `false` to disable.
+void set_lcd_header_enabled(bool enable);
 
-// Print a string to the LCD
+/// @brief Returns weather or not the lcd_header is enabled.
-void lcd_print(const char* str);
+/// @return `true` if the header is enabled, `false` otherwise.
+bool lcd_header_enabled();
 
-// Print a string to the LCD at a given pos
+/// @brief Prints the header in the LCD.
-void lcd_print(uint8_t col, uint8_t row, const char* str);
+void lcd_print_header();
 
-#endif /* CHAR_LCD_H */
+/// @brief Prints the splash screen for the BLK_BOX.
+void lcd_do_splash();
+
+/// @brief Locks the LCD to allow chaining multiple commands without interuptions.
+///
+/// Commands you call while you lock the LCD, you must call with the `no_lock` flag set to true.
+///
+/// Do not hold this lock for an extended period of time.
+/// @return `true` iff the lock was aquired.
+bool lcd_lock(uint32_t ticks_to_wait);
+
+/// @brief Unlocks the LCD to give away the mutex access to it.
+void lcd_unlock();
+
+/// @brief Set the resting position for the cursor
+/// @param row the row where the cursor should rest
+/// @param col the column where the cursor should rest
+void lcd_set_cursor_resting_position(uint8_t row, uint8_t col);
+
+/// @brief Get the current resting position of the cursor
+/// @param row pointer to store the resting row
+/// @param col pointer to store the resting column
+void lcd_get_cursor_resting_position(uint8_t* row, uint8_t* col);
+
+/// @brief Check if the cursor is currently visible
+/// @return true if cursor is visible, false otherwise
+bool lcd_is_cursor_visible();
+
+#endif /* CHAR_LCD_H */

main/drivers/game_info.cpp

@@ -0,0 +1,21 @@
+#include "game_info.h"
+#include "starcode.h"
+#include <stdio.h>
+#include "char_lcd.h"
+
+static char game_state[GAME_STATE_MAX_LEN+2] = " MENU ";
+
+void set_game_state(const char* new_state) {
+    snprintf(game_state, sizeof(game_state), " %-5s", new_state);
+}
+
+void reset_game_state() {
+    set_game_state("");
+}
+
+void lcd_print_header_step() {
+    if (!lcd_header_enabled()) return;
+    if (lcd_starcode_displaying_result()) return;
+
+    lcd_print(0, 10, game_state);
+}

main/drivers/game_info.h

@@ -0,0 +1,17 @@
+#ifndef GAME_INFO_H
+#define GAME_INFO_H
+
+#define GAME_STATE_MAX_LEN 5
+
+/// @brief Sets the game state, used for the header.
+///
+/// Must be <= 5 characters
+void set_game_state(const char* new_state);
+
+/// @brief Resets the game state to be blank.
+void reset_game_state();
+
+/// @brief Prints the game state section of the header to the char_lcd. (row 0, columns 11-15)
+void lcd_print_header_step();
+
+#endif /* GAME_INFO_H */

main/drivers/hwdata.cpp

@@ -0,0 +1,494 @@
+#include "hwdata.h"
+#include "esp_err.h"
+#include "esp_log.h"
+#include "bottom_half.h"
+#include "char_lcd.h"
+#include "../helper.h"
+#include "nvs.h"
+
+static const char* TAG = "hwdata";
+
+HWData::HWData() 
+    : compat_mode(true) 
+{}
+
+HWData::HWData(HWData1 data, bool compat_mode)
+    : compat_mode(compat_mode),
+      inner(data) 
+{}
+
+esp_err_t HWData::save(nvs_handle_t handle, bool force) {
+    if (compat_mode && !force) {
+        ESP_LOGW(TAG, "Not saving due to being in compatability mode.");
+        return ESP_OK;
+    }
+    return inner.save(handle);
+}
+
+HWData HWData::load(nvs_handle_t handle) {
+    esp_err_t err;
+
+    uint16_t stored_version = 0;
+    err = nvs_get_u16(handle, "version", &stored_version);
+    if (err == ESP_ERR_NVS_NOT_FOUND) {
+        ESP_LOGE(TAG, "No NVS data found! using defaults");
+        return HWData();
+    } else if (err != ESP_OK) {
+        ESP_ERROR_CHECK_WITHOUT_ABORT(err);
+        ESP_LOGE(TAG, "Other esp error! using defaults");
+        return HWData();
+    }
+
+    HWData1 data;
+    switch (stored_version) {
+        case 0:
+            ESP_LOGE(TAG, "HWData version was 0! using defaults");
+            return HWData();
+        case 1:
+            data.load(handle);
+            return HWData(data, false);
+        default:
+            ESP_LOGW(TAG, "Max currently supported version is %d, but saved version is %d. Loading version %d anyway!", CURRENT_HWDATA_VERSION, stored_version, CURRENT_HWDATA_VERSION);
+            data.load(handle);
+            return HWData(data, true);
+    }
+}
+
+HWData1::HWData1() {}
+
+esp_err_t HWData1::save(nvs_handle_t handle) const {
+    ESP_ERROR_CHECK(nvs_set_u16(handle, "version", 1));
+
+    // Serial number
+    ESP_ERROR_CHECK(nvs_set_str(handle, "serial_num", serial_num.c_str()));
+
+    // Revisions
+    ESP_ERROR_CHECK(nvs_set_u8(handle, "rev_ctrl_maj", rev_ctrl_maj));
+    ESP_ERROR_CHECK(nvs_set_u8(handle, "rev_ctrl_min", rev_ctrl_min));
+    ESP_ERROR_CHECK(nvs_set_u8(handle, "rev_exp_maj", rev_exp_maj));
+    ESP_ERROR_CHECK(nvs_set_u8(handle, "rev_exp_min", rev_exp_min));
+    ESP_ERROR_CHECK(nvs_set_u8(handle, "rev_ft_maj", rev_ft_maj));
+    ESP_ERROR_CHECK(nvs_set_u8(handle, "rev_ft_min", rev_ft_min));
+    ESP_ERROR_CHECK(nvs_set_u8(handle, "rev_fb_maj", rev_fb_maj));
+    ESP_ERROR_CHECK(nvs_set_u8(handle, "rev_fb_min", rev_fb_min));
+
+    // Enums
+    ESP_ERROR_CHECK(nvs_set_u8(handle, "sseg_color_t", static_cast<uint8_t>(sseg_color_t)));
+    ESP_ERROR_CHECK(nvs_set_u8(handle, "sseg_color_b", static_cast<uint8_t>(sseg_color_b)));
+    ESP_ERROR_CHECK(nvs_set_u8(handle, "lcd_color", static_cast<uint8_t>(lcd_color)));
+    ESP_ERROR_CHECK(nvs_set_u8(handle, "button_type", static_cast<uint8_t>(button_type)));
+    ESP_ERROR_CHECK(nvs_set_u8(handle, "tft_type", static_cast<uint8_t>(tft_type)));
+    ESP_ERROR_CHECK(nvs_set_u8(handle, "bat_type", static_cast<uint8_t>(bat_type)));
+    ESP_ERROR_CHECK(nvs_set_u8(handle, "shape1", static_cast<uint8_t>(shape1)));
+    ESP_ERROR_CHECK(nvs_set_u8(handle, "shape2", static_cast<uint8_t>(shape2)));
+    ESP_ERROR_CHECK(nvs_set_u8(handle, "shape3", static_cast<uint8_t>(shape3)));
+    ESP_ERROR_CHECK(nvs_set_u8(handle, "shape4", static_cast<uint8_t>(shape4)));
+
+    // Other fields
+    ESP_ERROR_CHECK(nvs_set_u8(handle, "switch_pos", switch_pos));
+    ESP_ERROR_CHECK(nvs_set_u8(handle, "has_speaker", has_speaker));
+    ESP_ERROR_CHECK(nvs_set_u8(handle, "has_mic", has_mic));
+    ESP_ERROR_CHECK(nvs_set_u8(handle, "has_ir", has_ir));
+    ESP_ERROR_CHECK(nvs_set_u8(handle, "has_rfid", has_rfid));
+    ESP_ERROR_CHECK(nvs_set_u8(handle, "has_fp", has_fp));
+    ESP_ERROR_CHECK(nvs_set_u8(handle, "has_fp_hall", has_fp_hall));
+    ESP_ERROR_CHECK(nvs_set_u8(handle, "has_close_hall", has_close_hall));
+
+    // Battery capacity
+    ESP_ERROR_CHECK(nvs_set_u16(handle, "bat_cap", bat_cap));
+
+    return nvs_commit(handle);
+}
+
+void HWData1::load(nvs_handle_t handle) {
+    char buf[128];
+    size_t required_size = sizeof(buf);
+    esp_err_t err = nvs_get_str(handle, "serial_num", buf, &required_size);
+    serial_num = (err == ESP_OK) ? std::string(buf) : "";
+
+    nvs_get_u8(handle, "rev_ctrl_maj", &rev_ctrl_maj);
+    nvs_get_u8(handle, "rev_ctrl_min", &rev_ctrl_min);
+    nvs_get_u8(handle, "rev_exp_maj", &rev_exp_maj);
+    nvs_get_u8(handle, "rev_exp_min", &rev_exp_min);
+    nvs_get_u8(handle, "rev_ft_maj", &rev_ft_maj);
+    nvs_get_u8(handle, "rev_ft_min", &rev_ft_min);
+    nvs_get_u8(handle, "rev_fb_maj", &rev_fb_maj);
+    nvs_get_u8(handle, "rev_fb_min", &rev_fb_min);
+
+    uint8_t tmp;
+    if (nvs_get_u8(handle, "sseg_color_t", &tmp) == ESP_OK) sseg_color_t = static_cast<SSegColor>(tmp);
+    if (nvs_get_u8(handle, "sseg_color_b", &tmp) == ESP_OK) sseg_color_b = static_cast<SSegColor>(tmp);
+    if (nvs_get_u8(handle, "lcd_color", &tmp) == ESP_OK) lcd_color = static_cast<LCDColor>(tmp);
+    if (nvs_get_u8(handle, "button_type", &tmp) == ESP_OK) button_type = static_cast<ButtonType>(tmp);
+    if (nvs_get_u8(handle, "tft_type", &tmp) == ESP_OK) tft_type = static_cast<TFTType>(tmp);
+    if (nvs_get_u8(handle, "bat_type", &tmp) == ESP_OK) bat_type = static_cast<BatType>(tmp);
+    nvs_get_u16(handle, "bat_cap", &bat_cap);
+
+    if (nvs_get_u8(handle, "shape1", &tmp) == ESP_OK) shape1 = static_cast<ShapeType>(tmp);
+    if (nvs_get_u8(handle, "shape2", &tmp) == ESP_OK) shape2 = static_cast<ShapeType>(tmp);
+    if (nvs_get_u8(handle, "shape3", &tmp) == ESP_OK) shape3 = static_cast<ShapeType>(tmp);
+    if (nvs_get_u8(handle, "shape4", &tmp) == ESP_OK) shape4 = static_cast<ShapeType>(tmp);
+
+    nvs_get_u8(handle, "switch_pos", &switch_pos);
+    nvs_get_u8(handle, "has_speaker", &tmp); has_speaker = tmp;
+    nvs_get_u8(handle, "has_mic", &tmp); has_mic = tmp;
+    nvs_get_u8(handle, "has_ir", &tmp); has_ir = tmp;
+    nvs_get_u8(handle, "has_rfid", &tmp); has_rfid = tmp;
+    nvs_get_u8(handle, "has_fp", &tmp); has_fp = tmp;
+    nvs_get_u8(handle, "has_fp_hall", &tmp); has_fp_hall = tmp;
+    nvs_get_u8(handle, "has_close_hall", &tmp); has_close_hall = tmp;
+}
+
+static void handle_uint8(KeypadKey key, uint8_t& val) {
+    char key_c = char_of_keypad_key(key);
+    bool is_digit = std::isdigit(static_cast<unsigned char>(key_c));
+    uint8_t digit = is_digit ? static_cast<uint8_t>(key_c - '0') : 0;
+
+    if (key == KeypadKey::star) {
+        val = 0;
+    } else if (is_digit) {
+        uint16_t new_digit = ((uint16_t) val) * 10 + (uint16_t) digit;
+        if (new_digit < 255) val = new_digit;
+    }
+}
+static void handle_uint16(KeypadKey key, uint16_t& val) {
+    char key_c = char_of_keypad_key(key);
+    bool is_digit = std::isdigit(static_cast<unsigned char>(key_c));
+    uint8_t digit = is_digit ? static_cast<uint8_t>(key_c - '0') : 0;
+
+    if (key == KeypadKey::star) {
+        val = 0;
+    } else if (is_digit) {
+        uint32_t new_digit = ((uint32_t) val) * 10 + (uint32_t) digit;
+        if (new_digit < 65535) val = new_digit;
+    }
+}
+
+static void handle_enum(ButtonKey key, uint8_t& val, uint8_t n_items) {
+    if (key == ButtonKey::b1) {
+        // dec
+        val = (val + n_items - 1) % n_items;
+    } else if (key == ButtonKey::b2) {
+        // inc
+        val = (val + 1) % n_items;
+    }
+}
+
+void hardware_config() {
+    clean_bomb();
+    uint8_t current_item = 0;
+    const uint8_t n_items = 28;
+
+    HWData1& hwdata = get_hw_data().inner;
+
+    ButtonKey btn;
+    KeypadKey key;
+    bool dirty = true;
+    while (true) {
+        if (dirty) {
+            // display
+            char name[21];
+            char value[21];
+
+            switch (current_item) {
+                case 0: // serial_num
+                    snprintf(name, sizeof(name), "%-20s", "serial_num");
+                    snprintf(value, sizeof(value), "%s", hwdata.serial_num.c_str());
+                    break;
+
+                case 1: // rev_ctrl_maj
+                    snprintf(name, sizeof(name), "%-20s", "rev_ctrl_maj");
+                    snprintf(value, sizeof(value), "%d", hwdata.rev_ctrl_maj);
+                    break;
+
+                case 2: // rev_ctrl_min
+                    snprintf(name, sizeof(name), "%-20s", "rev_ctrl_min");
+                    snprintf(value, sizeof(value), "%d", hwdata.rev_ctrl_min);
+                    break;
+
+                case 3: // rev_exp_maj
+                    snprintf(name, sizeof(name), "%-20s", "rev_exp_maj");
+                    snprintf(value, sizeof(value), "%d", hwdata.rev_exp_maj);
+                    break;
+
+                case 4: // rev_exp_min
+                    snprintf(name, sizeof(name), "%-20s", "rev_exp_min");
+                    snprintf(value, sizeof(value), "%d", hwdata.rev_exp_min);
+                    break;
+
+                case 5: // rev_ft_maj
+                    snprintf(name, sizeof(name), "%-20s", "rev_ft_maj");
+                    snprintf(value, sizeof(value), "%d", hwdata.rev_ft_maj);
+                    break;
+
+                case 6: // rev_ft_min
+                    snprintf(name, sizeof(name), "%-20s", "rev_ft_min");
+                    snprintf(value, sizeof(value), "%d", hwdata.rev_ft_min);
+                    break;
+
+                case 7: // rev_fb_maj
+                    snprintf(name, sizeof(name), "%-20s", "rev_fb_maj");
+                    snprintf(value, sizeof(value), "%d", hwdata.rev_fb_maj);
+                    break;
+
+                case 8: // rev_fb_min
+                    snprintf(name, sizeof(name), "%-20s", "rev_fb_min");
+                    snprintf(value, sizeof(value), "%d", hwdata.rev_fb_min);
+                    break;
+
+                case 9: // sseg_color_t
+                    snprintf(name, sizeof(name), "%-20s", "sseg_color_t");
+                    snprintf(value, sizeof(value), "%s", SSEG_COLOR_NAMES[static_cast<uint8_t>(hwdata.sseg_color_t)]);
+                    break;
+
+                case 10: // sseg_color_b
+                    snprintf(name, sizeof(name), "%-20s", "sseg_color_b");
+                    snprintf(value, sizeof(value), "%s", SSEG_COLOR_NAMES[static_cast<uint8_t>(hwdata.sseg_color_b)]);
+                    break;
+
+                case 11: // lcd_color
+                    snprintf(name, sizeof(name), "%-20s", "lcd_color");
+                    snprintf(value, sizeof(value), "%s", LCD_COLOR_NAMES[static_cast<uint8_t>(hwdata.lcd_color)]);
+                    break;
+
+                case 12: // switch_pos
+                    snprintf(name, sizeof(name), "%-20s", "switch_pos");
+                    snprintf(value, sizeof(value), "%d", hwdata.switch_pos);
+                    break;
+
+                case 13: // button_type
+                    snprintf(name, sizeof(name), "%-20s", "button_type");
+                    snprintf(value, sizeof(value), "%s", BUTTON_TYPE_NAMES[static_cast<uint8_t>(hwdata.button_type)]);
+                    break;
+
+                case 14: // tft_type
+                    snprintf(name, sizeof(name), "%-20s", "tft_type");
+                    snprintf(value, sizeof(value), "%s", TFT_TYPE_NAMES[static_cast<uint8_t>(hwdata.tft_type)]);
+                    break;
+
+                case 15: // bat_type
+                    snprintf(name, sizeof(name), "%-20s", "bat_type");
+                    snprintf(value, sizeof(value), "%s", BAT_TYPE_NAMES[static_cast<uint8_t>(hwdata.bat_type)]);
+                    break;
+
+                case 16: // bat_cap
+                    snprintf(name, sizeof(name), "%-20s", "bat_cap");
+                    snprintf(value, sizeof(value), "%d", hwdata.bat_cap);
+                    break;
+
+                case 17: // shape1
+                    snprintf(name, sizeof(name), "%-20s", "shape1");
+                    snprintf(value, sizeof(value), "%s", SHAPE_TYPE_NAMES[static_cast<uint8_t>(hwdata.shape1)]);
+                    break;
+
+                case 18: // shape2
+                    snprintf(name, sizeof(name), "%-20s", "shape2");
+                    snprintf(value, sizeof(value), "%s", SHAPE_TYPE_NAMES[static_cast<uint8_t>(hwdata.shape2)]);
+                    break;
+
+                case 19: // shape3
+                    snprintf(name, sizeof(name), "%-20s", "shape3");
+                    snprintf(value, sizeof(value), "%s", SHAPE_TYPE_NAMES[static_cast<uint8_t>(hwdata.shape3)]);
+                    break;
+
+                case 20: // shape4
+                    snprintf(name, sizeof(name), "%-20s", "shape4");
+                    snprintf(value, sizeof(value), "%s", SHAPE_TYPE_NAMES[static_cast<uint8_t>(hwdata.shape4)]);
+                    break;
+
+                case 21: // has_speaker
+                    snprintf(name, sizeof(name), "%-20s", "has_speaker");
+                    snprintf(value, sizeof(value), "%s", hwdata.has_speaker ? "true" : "false");
+                    break;
+
+                case 22: // has_mic
+                    snprintf(name, sizeof(name), "%-20s", "has_mic");
+                    snprintf(value, sizeof(value), "%s", hwdata.has_mic ? "true" : "false");
+                    break;
+
+                case 23: // has_ir
+                    snprintf(name, sizeof(name), "%-20s", "has_ir");
+                    snprintf(value, sizeof(value), "%s", hwdata.has_ir ? "true" : "false");
+                    break;
+
+                case 24: // has_rfid
+                    snprintf(name, sizeof(name), "%-20s", "has_rfid");
+                    snprintf(value, sizeof(value), "%s", hwdata.has_rfid ? "true" : "false");
+                    break;
+
+                case 25: // has_fp
+                    snprintf(name, sizeof(name), "%-20s", "has_fp");
+                    snprintf(value, sizeof(value), "%s", hwdata.has_fp ? "true" : "false");
+                    break;
+
+                case 26: // has_fp_hall
+                    snprintf(name, sizeof(name), "%-20s", "has_fp_hall");
+                    snprintf(value, sizeof(value), "%s", hwdata.has_fp_hall ? "true" : "false");
+                    break;
+
+                case 27: // has_close_hall
+                    snprintf(name, sizeof(name), "%-20s", "has_close_hall");
+                    snprintf(value, sizeof(value), "%s", hwdata.has_close_hall ? "true" : "false");
+                    break;
+
+                default:
+                    break;
+            }
+
+            lcd_print(1, 0, name);
+            lcd_print(2, 0, value);
+
+            dirty = false;
+        }
+
+        if (get_button_pressed(&btn)) {
+            dirty = true;
+            switch (btn) {
+                case ButtonKey::b3: // dec
+                    current_item = (current_item + n_items - 1) % n_items;
+                    break;
+                case ButtonKey::b4: // inc
+                    current_item = (current_item + 1) % n_items;
+                    break;
+                default:
+                    switch (current_item) {   
+                        case 9: // sseg_color_t
+                            handle_enum(btn, reinterpret_cast<uint8_t&>(hwdata.sseg_color_t), SSEG_COLOR_COUNT);
+                            break;
+
+                        case 10: // sseg_color_b
+                            handle_enum(btn, reinterpret_cast<uint8_t&>(hwdata.sseg_color_b), SSEG_COLOR_COUNT);
+                            break;
+
+                        case 11: // lcd_color
+                            handle_enum(btn, reinterpret_cast<uint8_t&>(hwdata.lcd_color), LCD_COLOR_COUNT);
+                            break;
+
+                        case 13: // button_type
+                            handle_enum(btn, reinterpret_cast<uint8_t&>(hwdata.button_type), BUTTON_TYPE_COUNT);
+                            break;
+
+                        case 14: // tft_type
+                            handle_enum(btn, reinterpret_cast<uint8_t&>(hwdata.tft_type), TFT_TYPE_COUNT);
+                            break;
+
+                        case 15: // bat_type
+                            handle_enum(btn, reinterpret_cast<uint8_t&>(hwdata.bat_type), BAT_TYPE_COUNT);
+                            break;
+                
+                        case 17: // shape1
+                            handle_enum(btn, reinterpret_cast<uint8_t&>(hwdata.shape1), SHAPE_TYPE_COUNT);
+                            break;                
+                        case 18: // shape2
+                            handle_enum(btn, reinterpret_cast<uint8_t&>(hwdata.shape2), SHAPE_TYPE_COUNT);
+                            break;
+                        case 19: // shape3
+                            handle_enum(btn, reinterpret_cast<uint8_t&>(hwdata.shape3), SHAPE_TYPE_COUNT);
+                            break;
+                        case 20: // shape4                
+                            handle_enum(btn, reinterpret_cast<uint8_t&>(hwdata.shape4), SHAPE_TYPE_COUNT);
+                            break;
+                
+                        case 21: // has_speaker
+                            hwdata.has_speaker = btn == ButtonKey::button_green;
+                            break;
+                
+                        case 22: // has_mic
+                            hwdata.has_mic = btn == ButtonKey::button_green;
+                            break;
+                        
+                        case 23: // has_ir
+                            hwdata.has_ir = btn == ButtonKey::button_green;
+                            break;
+                        
+                        case 24: // has_rfid
+                            hwdata.has_rfid = btn == ButtonKey::button_green;
+                            break;
+                        
+                        case 25: // has_fp
+                            hwdata.has_fp = btn == ButtonKey::button_green;
+                            break;
+                        
+                        case 26: // has_fp_hall                        
+                            hwdata.has_fp_hall = btn == ButtonKey::button_green;
+                            break;
+                        
+                        case 27: // has_close_hall
+                            hwdata.has_close_hall = btn == ButtonKey::button_green;
+                            break;
+
+                        default:
+                            break;
+                    }
+                    break;
+            }
+        }
+        if (get_keypad_pressed(&key)) {
+            dirty = true;
+            if (key == KeypadKey::pound) {
+                // TODO: ask the user to save
+                return; // done
+            }
+
+            char key_c = char_of_keypad_key(key);
+            bool is_digit = std::isdigit(static_cast<unsigned char>(key_c));
+            uint8_t digit = is_digit ? static_cast<uint8_t>(key_c - '0') : 0;
+
+            // update the current value
+            switch (current_item) {
+                case 0: // serial_num
+                    if (key == KeypadKey::star) {
+                        hwdata.serial_num.clear();
+                    } else {
+                        hwdata.serial_num.push_back(char_of_keypad_key(key));
+                    }
+                    break;
+                
+                case 1: // rev_ctrl_maj
+                    handle_uint8(key, hwdata.rev_ctrl_maj);
+                    break;
+                
+                case 2: // rev_ctrl_min
+                    handle_uint8(key, hwdata.rev_ctrl_min);
+                    break;
+                
+                case 3: // rev_exp_maj
+                    handle_uint8(key, hwdata.rev_exp_maj);
+                    break;
+                
+                case 4: // rev_exp_min
+                    handle_uint8(key, hwdata.rev_exp_min);
+                    break;
+                
+                case 5: // rev_ft_maj
+                    handle_uint8(key, hwdata.rev_ft_maj);
+                    break;
+                
+                case 6: // rev_ft_min
+                    handle_uint8(key, hwdata.rev_ft_min);
+                    break;
+                
+                case 7: // rev_fb_maj
+                    handle_uint8(key, hwdata.rev_fb_maj);
+                    break;
+                
+                case 8: // rev_fb_min
+                    handle_uint8(key, hwdata.rev_fb_min);
+                    break;
+                
+                case 12: // switch_pos
+                    if (digit == 2 || digit == 3) hwdata.switch_pos = digit;
+                    break;
+                
+                case 16: // bat_cap
+                    handle_uint16(key, hwdata.bat_cap);
+                    break;
+                                   
+                default:
+                    break;
+            }
+        }
+
+        vTaskDelay(pdMS_TO_TICKS(10));
+    }
+}

main/drivers/hwdata.h

@@ -0,0 +1,199 @@
+#ifndef HWDATA_H
+#define HWDATA_H
+
+#include <string>
+#include <cstdint>
+#include <cstring>
+#include "esp_err.h"
+#include "nvs_flash.h"
+
+#define CURRENT_HWDATA_VERSION 1
+#define CURRENT_HWDATA_STRUCT HWData1
+
+#define SSEG_COLOR_COUNT 10
+static constexpr const char* SSEG_COLOR_NAMES[SSEG_COLOR_COUNT] = {
+    "UNKNOWN",
+    "NONE",
+    "OTHER",
+    "RED",
+    "ORANGE",
+    "YELLOW",
+    "GREEN",
+    "BLUE",
+    "PURPLE",
+    "WHITE"
+};
+enum class SSegColor : uint8_t {
+    UNKNOWN = 0,
+    NONE = 1,
+    OTHER = 2,
+    RED = 3,
+    ORANGE = 4,
+    YELLOW = 5,
+    GREEN = 6,
+    BLUE = 7,
+    PURPLE = 8,
+    WHITE = 9,
+};
+
+#define LCD_COLOR_COUNT 8
+static constexpr const char* LCD_COLOR_NAMES[LCD_COLOR_COUNT] = {
+    "UNKNOWN",
+    "NONE",
+    "OTHER",
+    "BLACK_GREEN",
+    "WHITE_BLUE",
+    "BLACK_SKY",
+    "BLACK_WHITE",
+    "WHITE_BLACK"
+};
+enum class LCDColor : uint8_t {
+    UNKNOWN = 0,
+    NONE = 1,
+    OTHER = 2,
+    BLACK_GREEN = 3,
+    WHITE_BLUE = 4,
+    BLACK_SKY = 5,
+    BLACK_WHITE = 6,
+    WHITE_BLACK = 7,
+};
+
+#define BUTTON_TYPE_COUNT 6
+static constexpr const char* BUTTON_TYPE_NAMES[BUTTON_TYPE_COUNT] = {
+    "UNKNOWN",
+    "NONE",
+    "OTHER",
+    "WHITE",
+    "BROWN",
+    "RED"
+};
+enum class ButtonType : uint8_t {
+    UNKNOWN = 0,
+    NONE = 1,
+    OTHER = 2,
+    WHITE = 3,
+    BROWN = 4,
+    RED = 5,
+};
+
+#define TFT_TYPE_COUNT 5
+static constexpr const char* TFT_TYPE_NAMES[TFT_TYPE_COUNT] = {
+    "UNKNOWN",
+    "NONE",
+    "OTHER",
+    "EAST_RISING",
+    "SHENZHEN"
+};
+enum class TFTType : uint8_t {
+    UNKNOWN = 0,
+    NONE = 1,
+    OTHER = 2,
+    EAST_RISING = 3,
+    SHENZHEN = 4,
+};
+
+#define BAT_TYPE_COUNT 5
+static constexpr const char* BAT_TYPE_NAMES[BAT_TYPE_COUNT] = {
+    "UNKNOWN",
+    "NONE",
+    "OTHER",
+    "BAT_18650",
+    "LIPO"
+};
+enum class BatType : uint8_t {
+    UNKNOWN = 0,
+    NONE = 1,
+    OTHER = 2,
+    BAT_18650 = 3,
+    LIPO = 4,
+};
+
+#define SHAPE_TYPE_COUNT 11
+static constexpr const char* SHAPE_TYPE_NAMES[SHAPE_TYPE_COUNT] = {
+    "UNKNOWN",
+    "OTHER",
+    "CIRCLE",
+    "SQUARE",
+    "TRIANGLE",
+    "X",
+    "STAR",
+    "SPADE",
+    "DIAMOND",
+    "CLUB",
+    "HEART"
+};
+enum class ShapeType : uint8_t {
+    UNKNOWN = 0,
+    OTHER = 1,
+    CIRCLE = 2,
+    SQUARE = 3,
+    TRIANGLE = 4,
+    X = 5,
+    STAR = 6,
+    SPADE = 7,
+    DIAMOND = 8,
+    CLUB = 9,
+    HEART = 10,
+};
+
+
+
+/// @brief Version 1 of HWData, kept constant for migrations
+struct HWData1 {
+    std::string serial_num;
+    uint8_t rev_ctrl_maj;
+    uint8_t rev_ctrl_min;
+    uint8_t rev_exp_maj;
+    uint8_t rev_exp_min;
+    uint8_t rev_ft_maj;
+    uint8_t rev_ft_min;
+    uint8_t rev_fb_maj;
+    uint8_t rev_fb_min;
+
+    SSegColor sseg_color_t;
+    SSegColor sseg_color_b;
+    LCDColor lcd_color;
+    uint8_t switch_pos;
+    ButtonType button_type;
+    TFTType tft_type;
+    BatType bat_type;
+    uint16_t bat_cap;
+
+    ShapeType shape1;
+    ShapeType shape2;
+    ShapeType shape3;
+    ShapeType shape4;
+
+    bool has_speaker;
+    bool has_mic;
+    bool has_ir;
+    bool has_rfid;
+    bool has_fp;
+    bool has_fp_hall;
+    bool has_close_hall;
+
+    HWData1();
+
+    esp_err_t save(nvs_handle_t handle) const;
+    void load(nvs_handle_t handle);
+
+    // Add migration method as necessary
+};
+
+/// @brief The current version of HWData, to be stored
+struct HWData {
+    /// @brief `true` if there is some issue in loading, and we are doing a "best effort" to be compatible
+    /// We should make no writes to NVS if this is `true`.
+    volatile bool compat_mode;
+    HWData1 inner;
+
+    HWData();
+    HWData(HWData1 data, bool compat_mode);
+
+    esp_err_t save(nvs_handle_t handle, bool force = false);
+    static HWData load(nvs_handle_t handle);
+};
+
+void hardware_config();
+
+#endif /* HWDATA_H */

main/drivers/i2c.cpp

@@ -0,0 +1,35 @@
+#include "i2c.h"
+#include "esp_log.h"
+#include "esp_err.h"
+#include "driver/i2c.h"
+
+static const char *TAG = "i2c";
+
+SemaphoreHandle_t main_i2c_mutex;
+
+void init_i2c() {
+    ESP_LOGI(TAG, "Initializing i2c...");
+
+    i2c_config_t conf = {
+        .mode = I2C_MODE_MASTER,
+        .sda_io_num = PIN_I2C_SDA,
+        .scl_io_num = PIN_I2C_SCL,
+        .sda_pullup_en = GPIO_PULLUP_DISABLE,
+        .scl_pullup_en = GPIO_PULLUP_DISABLE,
+        // .sda_pullup_en = GPIO_PULLUP_ENABLE,
+        // .scl_pullup_en = GPIO_PULLUP_ENABLE,
+        .master = {
+            // TODO: 400k?
+            .clk_speed = 100*1000,
+        },
+        .clk_flags = I2C_SCLK_SRC_FLAG_FOR_NOMAL
+    };
+
+    ESP_ERROR_CHECK(i2c_param_config(MAIN_I2C_BUS_NUM, &conf));
+    ESP_ERROR_CHECK(i2c_driver_install(MAIN_I2C_BUS_NUM, conf.mode, 0, 0, 0));
+
+    main_i2c_mutex = xSemaphoreCreateMutex();
+    assert(main_i2c_mutex != NULL);
+
+    ESP_LOGI(TAG, "i2c initialized!");
+}

main/drivers/i2c.h

@@ -0,0 +1,26 @@
+#ifndef I2C_H
+#define I2C_H
+
+#include "freertos/FreeRTOS.h"
+#include "freertos/semphr.h"
+
+#define MAIN_I2C_BUS_NUM I2C_NUM_0
+
+#define PIN_I2C_SDA GPIO_NUM_7
+#define PIN_I2C_SCL GPIO_NUM_15
+
+/// The mutex for accessing `I2C_NUM_0`.
+extern SemaphoreHandle_t main_i2c_mutex;
+
+/// @brief Initializes `I2C_NUM_0`.
+///
+/// This is hooked up the to:
+///  - The bottom half
+///  - The char lcd
+///  - The power board
+///  - The MPU6050
+///  - The PERH port
+///  - The Capacitive Touch Panel
+void init_i2c();
+
+#endif /* I2C_H */

main/drivers/i2c_lcd_pcf8574.c

@@ -12,6 +12,7 @@
 #include "esp_check.h"
 #include "freertos/FreeRTOS.h"
 #include "freertos/task.h"
+#include "i2c.h"
 
 #define TAG "I2C_LCD_PCF8574"
 
@@ -58,6 +59,7 @@ void lcd_begin(i2c_lcd_pcf8574_handle_t* lcd, uint8_t cols, uint8_t rows) {
     lcd->entrymode = 0x02;
 
     // The following are the reset sequence: Please see "Initialization instruction in the PCF8574 datasheet."
+    xSemaphoreTake(main_i2c_mutex, portMAX_DELAY);
     i2c_cmd_handle_t cmd = i2c_cmd_link_create();
     i2c_master_start(cmd);
     // We left-shift the device addres and add the read/write command
@@ -95,6 +97,7 @@ void lcd_begin(i2c_lcd_pcf8574_handle_t* lcd, uint8_t cols, uint8_t rows) {
     i2c_master_stop(cmd);
     i2c_master_cmd_begin(lcd->i2c_port, cmd, I2C_MASTER_TIMEOUT_MS / portTICK_PERIOD_MS);
     i2c_cmd_link_delete(cmd);
+    xSemaphoreGive(main_i2c_mutex);
 
     // Instruction: function set = 0x20
     lcd_send(lcd, 0x20 | (rows > 1 ? 0x08 : 0x00), false);
@@ -110,7 +113,7 @@ void lcd_clear(i2c_lcd_pcf8574_handle_t* lcd) {
     // Instruction: Clear display = 0x01
     lcd_send(lcd, 0x01, false);
     // Clearing the display takes a while: takes approx. 1.5ms
-    esp_rom_delay_us(1600);
+    esp_rom_delay_us(2000);
 }  // lcd_clear()
 
 // Set the display to home
@@ -118,7 +121,7 @@ void lcd_home(i2c_lcd_pcf8574_handle_t* lcd) {
     // Instruction: Return home = 0x02
     lcd_send(lcd, 0x02, false);
     // Same as clearing the display: takes approx. 1.5ms
-    esp_rom_delay_us(1600);
+    esp_rom_delay_us(2000);
 }  // lcd_home()
 
 // Set the cursor to a new position.
@@ -230,7 +233,7 @@ void lcd_no_autoscroll(i2c_lcd_pcf8574_handle_t* lcd) {
 
 // Setting the backlight: It can only be turn on or off.
 // Current backlight value is saved in the i2c_lcd_pcf8574_handle_t struct for further data transfers
-void lcd_set_backlight(i2c_lcd_pcf8574_handle_t* lcd, uint8_t brightness) {
+void lcd_set_backlight_to(i2c_lcd_pcf8574_handle_t* lcd, uint8_t brightness) {
     // Place the backlight value in the lcd struct
     lcd->backlight = brightness;
     // Send no data
@@ -238,7 +241,7 @@ void lcd_set_backlight(i2c_lcd_pcf8574_handle_t* lcd, uint8_t brightness) {
 }  // lcd_set_backlight()
 
 // Custom character creation: allows us to create up to 8 custom characters in the CGRAM locations
-void lcd_create_char(i2c_lcd_pcf8574_handle_t* lcd, uint8_t location, uint8_t charmap[]) {
+void lcd_create_char(i2c_lcd_pcf8574_handle_t* lcd, uint8_t location, const uint8_t charmap[]) {
     location &= 0x7;  // Only 8 locations are available
     // Set the CGRAM address
     lcd_send(lcd, 0x40 | (location << 3), false);
@@ -255,7 +258,12 @@ void lcd_write(i2c_lcd_pcf8574_handle_t* lcd, uint8_t value) {
 // Print characters to the LCD: cursor set or clear instruction must preceded this instruction, or it will write on the current text.
 void lcd_print(i2c_lcd_pcf8574_handle_t* lcd, const char* str) {
     while (*str) {
-        lcd_write(lcd, *str++);
+        if (*str == '\x08') {
+            lcd_write(lcd, '\x00');
+            str++;
+        } else {
+            lcd_write(lcd, *str++);
+        }
     }
 }  // lcd_print()
 
@@ -293,15 +301,16 @@ void lcd_print_number(i2c_lcd_pcf8574_handle_t* lcd, uint8_t col, uint8_t row, u
 
 // Private functions: derived from the esp32 i2c_master driver
 
-
 static void lcd_send(i2c_lcd_pcf8574_handle_t* lcd, uint8_t value, bool is_data) {
     i2c_cmd_handle_t cmd = i2c_cmd_link_create();
     i2c_master_start(cmd);
     i2c_master_write_byte(cmd, (lcd->i2c_addr << 1) | I2C_MASTER_WRITE, true);
+    xSemaphoreTake(main_i2c_mutex, portMAX_DELAY);
     lcd_write_nibble(lcd, (value >> 4 & 0x0F), is_data, cmd);
     lcd_write_nibble(lcd, (value & 0x0F), is_data, cmd);
     i2c_master_stop(cmd);
     esp_err_t ret = i2c_master_cmd_begin(lcd->i2c_port, cmd, I2C_MASTER_TIMEOUT_MS / portTICK_PERIOD_MS);
+    xSemaphoreGive(main_i2c_mutex);
     i2c_cmd_link_delete(cmd);
     
     if (ret != ESP_OK) {
@@ -346,7 +355,9 @@ static void lcd_write_i2c(i2c_lcd_pcf8574_handle_t* lcd, uint8_t data, bool is_d
     i2c_master_write_byte(cmd, (lcd->i2c_addr << 1) | I2C_MASTER_WRITE, true);
     i2c_master_write_byte(cmd, data, true);
     i2c_master_stop(cmd);
+    xSemaphoreTake(main_i2c_mutex, portMAX_DELAY);
     esp_err_t ret = i2c_master_cmd_begin(lcd->i2c_port, cmd, I2C_MASTER_TIMEOUT_MS / portTICK_PERIOD_MS);
+    xSemaphoreGive(main_i2c_mutex);
     i2c_cmd_link_delete(cmd);
 
     if (ret != ESP_OK) {

main/drivers/i2c_lcd_pcf8574.h

@@ -91,10 +91,10 @@ void lcd_autoscroll(i2c_lcd_pcf8574_handle_t* lcd);
 void lcd_no_autoscroll(i2c_lcd_pcf8574_handle_t* lcd);
 
 // Set backlight brightness
-void lcd_set_backlight(i2c_lcd_pcf8574_handle_t* lcd, uint8_t brightness);
+void lcd_set_backlight_to(i2c_lcd_pcf8574_handle_t* lcd, uint8_t brightness);
 
 // Create a custom character
-void lcd_create_char(i2c_lcd_pcf8574_handle_t* lcd, uint8_t location, uint8_t charmap[]);
+void lcd_create_char(i2c_lcd_pcf8574_handle_t* lcd, uint8_t location, const uint8_t charmap[]);
 
 // Write a character to the LCD
 void lcd_write(i2c_lcd_pcf8574_handle_t* lcd, uint8_t value);

main/drivers/leds.cpp

@@ -2,11 +2,32 @@
 #include "led_strip.h"
 #include <esp_log.h>
 #include "state_tracking.h"
+#include <cstring>
 
 static const char* TAG = "leds";
 
 static led_strip_handle_t leds;
 
+// TODO: rename these to playback_handler
+static bool replay_handler(const char* event, char* arg) {
+    if (strcmp(event, "LED_SET") == 0) {
+        uint32_t led = atoi(strtok(arg, ","));
+        uint32_t color = atoi(strtok(NULL, ","));
+        led_set(led, color);
+        return true;
+    }
+    if (strcmp(event, "LED_FLUSH") == 0) {
+        leds_flush();
+        return true;
+    }
+    if (strcmp(event, "LED_CLR") == 0) {
+        leds_clear();
+        return true;
+    }
+
+    return false;
+}
+
 void init_leds() {
     ESP_LOGI(TAG, "Initializing LEDs...");
 
@@ -25,6 +46,8 @@ void init_leds() {
 
     ESP_ERROR_CHECK(led_strip_new_rmt_device(&strip_config, &rmt_config, &leds));
 
+    register_replay_fn(replay_handler);
+
     ESP_LOGI(TAG, "LEDs initialized!");
 }
 

main/drivers/leds.h

@@ -4,7 +4,7 @@
 #include <stdint.h>
 
 #define LED_COUNT 21
-#define NEOPIXEL_PIN GPIO_NUM_7
+#define NEOPIXEL_PIN GPIO_NUM_0
 // 10MHz resolution, 1 tick = 0.1us (led strip needs a high resolution)
 #define LED_STRIP_RMT_RES_HZ  (10 * 1000 * 1000)
 
@@ -26,6 +26,7 @@ enum LEDColor: uint32_t {
     LED_COLOR_WHITE_STRONG = 0xFF'FF'FF,
 };
 
+// TODO: sepperate the indicator leds from the shape display.
 enum IndicatorLED {
     LED_SHAPE1 = 0u,
     LED_SHAPE2 = 1u,

main/drivers/nvs.cpp

@@ -0,0 +1,63 @@
+#include "nvs.h"
+#include "esp_log.h"
+#include "bottom_half.h"
+#include "char_lcd.h"
+
+static const char* TAG = "nvs";
+
+static const char* HWDATA_NAMESPACE = "hwdata";
+static HWData hw_data;
+
+bool init_nvs() {
+    ESP_LOGI(TAG, "Initializing NVS...");
+    esp_err_t ret = nvs_flash_init();
+    if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
+        // NVS partition was truncated, erase and retry
+        ESP_LOGE(TAG, "Failed to init nvs flash: %s.", esp_err_to_name(ret));
+        lcd_print(1, 0, "NVS: ");
+        lcd_print(1, 4, esp_err_to_name(ret));
+        lcd_print(2, 0, "Press Yellow to skip");
+        lcd_print(3, 0, "Press Red to erase");
+
+        ButtonKey button;
+        while (!( get_button_pressed(&button) && (button == ButtonKey::button_red || button == ButtonKey::button_yellow) )) vTaskDelay(pdMS_TO_TICKS(10));
+
+        lcd_clear();
+        
+        if (button == ButtonKey::button_yellow) {
+            return false;
+        }
+        if (button == ButtonKey::button_red) {
+            ESP_ERROR_CHECK(nvs_flash_erase());
+            ret = nvs_flash_init();
+        }
+    }
+    ESP_ERROR_CHECK(ret);
+
+    nvs_handle_t hw_handle;
+    ret = nvs_open(HWDATA_NAMESPACE, NVS_READONLY, &hw_handle);
+    if (ret == ESP_ERR_NVS_NOT_FOUND) {
+        ESP_LOGW(TAG, "Partition \"%s\" has not been initialized. Loading defaults.", HWDATA_NAMESPACE);
+        hw_data = HWData();
+    } else {
+        ESP_ERROR_CHECK(ret);
+        hw_data = HWData::load(hw_handle);
+        nvs_close(hw_handle);
+    }
+
+    ESP_LOGI(TAG, "NVS initialized!");
+
+    return true;
+}
+
+HWData& get_hw_data() {
+    return hw_data;
+}
+
+void save_hw_data(bool force) {
+    nvs_handle_t hw_handle;
+    ESP_ERROR_CHECK(nvs_open(HWDATA_NAMESPACE, NVS_READWRITE, &hw_handle));
+    hw_data.save(hw_handle);
+    nvs_close(hw_handle);
+}
+

main/drivers/nvs.h

@@ -0,0 +1,13 @@
+#ifndef NVS_H
+#define NVS_H
+
+#include "nvs_flash.h"
+#include "hwdata.h"
+
+/// @brief Initializes the NVS.
+bool init_nvs();
+
+/// Gets the HWData stored in NVS.
+HWData& get_hw_data();
+
+#endif /* NVS_H */

main/drivers/perh.cpp

@@ -0,0 +1,2 @@
+#include "perh.h"
+

main/drivers/perh.h

@@ -0,0 +1,12 @@
+#ifndef PERH_H
+#define PERH_H
+
+#include "driver/gpio.h"
+
+#define PIN_PERH0 GPIO_NUM_6
+#define PIN_PERH1 GPIO_NUM_5
+#define PIN_PERH2 GPIO_NUM_4
+#define PIN_PERH3 GPIO_NUM_2
+#define PIN_PERH4 GPIO_NUM_1
+
+#endif /* PERH_H */

main/drivers/power.cpp

@@ -1,5 +1,6 @@
 #include "power.h"
 #include "char_lcd.h"
+#include "starcode.h"
 #include <esp_log.h>
 
 static const char* TAG = "power";
@@ -11,9 +12,9 @@ void bat_monitor_task(void* arg) {
         sprintf(str_buf, "%d.%03dV", voltage / 1000, voltage % 1000);
 
         lcd_clear();
-        lcd_print(1, 0, str_buf);
+        lcd_print(0, 1, str_buf);
 
-        int16_t current = lipo.current(current_measure::AVG);
+        int16_t current = lipo.current();
         sprintf(str_buf, "%dmA", current);
 
         lcd_print(1, 1, str_buf);
@@ -22,12 +23,12 @@ void bat_monitor_task(void* arg) {
         int16_t total_cap = lipo.capacity(capacity_measure::FULL);
         sprintf(str_buf, "%dmAh", total_cap);
 
-        lcd_print(1, 2, str_buf);
+        lcd_print(2, 1, str_buf);
 
         int16_t soc = lipo.soc(soc_measure::FILTERED);
         sprintf(str_buf, "%d%%", soc);
 
-        lcd_print(1, 3, str_buf);
+        lcd_print(3, 1, str_buf);
 
 
         vTaskDelay(pdMS_TO_TICKS(250));
@@ -50,4 +51,50 @@ void init_power_board() {
     ESP_LOGI(TAG, "Power board initialized!");
 }
 
+uint16_t get_bat_voltage() {
+    return lipo.voltage();
+}
 
+void lcd_print_header_bat() {
+    if (!lcd_header_enabled()) return;
+    if (lcd_starcode_displaying_result()) return;
+    
+    uint8_t soc = lipo.soc();
+    int16_t current = lipo.current();
+    char buf[6];
+    if (soc < 5 && current <= 0) {
+        snprintf(buf, sizeof(buf), " LOW");
+    } else if (soc == 100) {
+        snprintf(buf, sizeof(buf), " 100");
+    } else {
+        if (current > 0) {
+            snprintf(buf, sizeof(buf), " %2d+", soc);
+        } else {
+            snprintf(buf, sizeof(buf), " %2d%%", soc);
+        }
+    }
+
+    lcd_print(0, 16, buf);
+}
+
+// memory version
+// void lcd_print_header_bat() {
+//     if (!lcd_header_enabled()) return;
+//     if (lcd_starcode_displaying_result()) return;
+
+//     // Show memory usage percentage instead of battery percentage
+//     char buf[6];
+//     size_t free_heap = heap_caps_get_free_size(MALLOC_CAP_DEFAULT);
+//     size_t total_heap = heap_caps_get_total_size(MALLOC_CAP_DEFAULT);
+//     uint8_t mem_percent = 0;
+//     if (total_heap > 0) {
+//         mem_percent = (uint8_t)(100 - ((free_heap * 100) / total_heap));
+//     }
+//     if (mem_percent >= 100) {
+//         snprintf(buf, sizeof(buf), " 100");
+//     } else {
+//         snprintf(buf, sizeof(buf), " %2d%%", mem_percent);
+//     }
+
+//     lcd_print(0, 16, buf);
+// }

main/drivers/power.h

@@ -3,13 +3,18 @@
 
 #include "SparkFunBQ27441/SparkFunBQ27441.h"
 
+extern volatile uint32_t battery_charge;
+
 void bat_monitor_task(void* arg);
 
 /// Initializes the battery gas guage for getting battery stats.
 void init_power_board();
 
-/// @brief Gets the battery voltage
+/// @brief Gets the battery voltage.
 /// @return battery voltage in mV.
 uint16_t get_bat_voltage();
 
+/// @brief Prints the battery section of the header to the char_lcd. (row 0, columns 17-19)
+void lcd_print_header_bat();
+
 #endif /* POWER_H */

main/drivers/sd.cpp

@@ -51,10 +51,10 @@ bool init_sd() {
         ESP_LOGE(TAG, "Failed to mount sd card: %s.", esp_err_to_name(ret));
 
         lcd_print(0, 0, "SD: ");
-        lcd_print(4, 0, esp_err_to_name(ret));
+        lcd_print(0, 4, esp_err_to_name(ret));
-        lcd_print(0, 1, "Press Green to retry");
+        lcd_print(1, 0, "Press Green to retry");
-        lcd_print(0, 2, "Press Yellow to skip");
+        lcd_print(2, 0, "Press Yellow to skip");
-        lcd_print(0, 3, "Press Red to format");
+        lcd_print(3, 0, "Press Red to format");
 
         ButtonKey button;
         while (!( get_button_pressed(&button) && (button == ButtonKey::button_green || button == ButtonKey::button_red || button == ButtonKey::button_yellow) )) vTaskDelay(pdMS_TO_TICKS(10));

main/drivers/sd.h

@@ -12,12 +12,12 @@
 
 extern sdmmc_card_t *card;
 
-#define SD_PIN_CLK GPIO_NUM_48
+#define SD_PIN_CLK GPIO_NUM_39
-#define SD_PIN_CMD GPIO_NUM_45
+#define SD_PIN_CMD GPIO_NUM_40
-#define SD_PIN_D0  GPIO_NUM_47
+#define SD_PIN_D0  GPIO_NUM_38
-#define SD_PIN_D1  GPIO_NUM_21
+#define SD_PIN_D1  GPIO_NUM_45
-#define SD_PIN_D2  GPIO_NUM_39
+#define SD_PIN_D2  GPIO_NUM_42
-#define SD_PIN_D3  GPIO_NUM_38
+#define SD_PIN_D3  GPIO_NUM_41
 
 /// @brief Initializes the SD card
 ///

main/drivers/speaker.cpp

@@ -30,6 +30,27 @@ QueueHandle_t play_clip_queue;
 /// The clips that are currently playing
 std::vector<playing_audio_clip_t> playing_clips;
 
+static bool replay_handler(const char* event, char* arg) {
+	if (strcmp(event, "PLAY_WAV") == 0) {
+		char* file_name = strtok(arg, ":");
+		char* play_immediately_str = strtok(NULL, ":");
+		char* repeat_str = strtok(NULL, ":");
+		char* prescaler_str = strtok(NULL, ":");
+
+		bool play_immediately = strcmp(play_immediately_str, "true") == 0;
+		bool repeat = strcmp(repeat_str, "true") == 0;
+		uint8_t prescaler = atoi(prescaler_str);
+		play_clip_wav(file_name, play_immediately, repeat, prescaler, 0);
+		return true;
+	}
+	if (strcmp(event, "STOP_WAV") == 0) {
+		stop_clip(arg, 0);
+		return true;
+	}
+
+	return false;
+}
+
 static bool push_clip(audio_clip_t clip) {
 	ESP_LOGD(TAG, "playing %s", clip.file_name);
 	FILE* fh = fopen(clip.file_name, "rb");
@@ -233,6 +254,8 @@ void init_speaker(void) {
     xTaskCreate(speaker_task, "play_audio", 4096, NULL, 5, NULL);
 
 	play_clip_wav(MOUNT_POINT "/startup.wav", true, false, 4, 0);
+
+	register_replay_fn(replay_handler);
 	
 	ESP_LOGI(TAG, "Speaker initialized!");
 }

main/drivers/speaker.h

@@ -15,8 +15,8 @@
 #include "sdkconfig.h"
 #include "sd.h"
 
-#define SPEAKER_PIN_BCLK  GPIO_NUM_46
+#define SPEAKER_PIN_BCLK  GPIO_NUM_11
-#define SPEAKER_PIN_WS    GPIO_NUM_9
+#define SPEAKER_PIN_WS    GPIO_NUM_12
 #define SPEAKER_PIN_DOUT  GPIO_NUM_3
 #define SAMPLE_RATE 44100
 // The maximum number of clips that can be queued at one time.

main/drivers/sseg.cpp

@@ -1,16 +1,62 @@
 #include "sseg.h"
 #include <esp_log.h>
 #include "state_tracking.h"
+#include <cstring>
 
 TM1640* sseg = nullptr;
 
 static const char *TAG = "sseg";
 
+static bool replay_handler(const char* event, char* arg) {
+    if (strcmp(event, "SSEG_G_RAW") == 0) {
+        uint8_t segments[4];
+        segments[0] = atoi(strtok(arg, ","));
+        for (int i = 1; i < 4; i++) {
+            segments[i] = atoi(strtok(NULL, ","));
+        }
+        set_game_sseg_raw(segments);
+        return true;
+    }
+    if (strcmp(event, "SSEG_G_CLR") == 0) {
+        clear_game_sseg();
+        return true;
+    }
+    if (strcmp(event, "SSEG_M_RAW") == 0) {
+        uint8_t segments[4];
+        segments[0] = atoi(strtok(arg, ","));
+        for (int i = 1; i < 4; i++) {
+            segments[i] = atoi(strtok(NULL, ","));
+        }
+        set_module_sseg_raw(segments);
+        return true;
+    }
+    if (strcmp(event, "SSEG_M_CLR") == 0) {
+        clear_module_sseg();
+        return true;
+    }
+    if (strcmp(event, "SSEG_G") == 0) {
+        uint32_t value = atoi(strtok(arg, ","));
+        uint8_t dot_pos = atoi(strtok(NULL, ","));
+        set_game_sseg_num(value, dot_pos);
+        return true;
+    }
+     if (strcmp(event, "SSEG_M") == 0) {
+        uint32_t value = atoi(strtok(arg, ","));
+        uint8_t dot_pos = atoi(strtok(NULL, ","));
+        set_module_sseg_num(value, dot_pos);
+        return true;
+    }
+
+    return false;
+}
+
 void init_sseg() {
     ESP_LOGI(TAG, "Initializing sseg...");
 
     sseg = new TM1640(SSEG_PIN_DATA, SSEG_PIN_CLK, 8);
 
+    register_replay_fn(replay_handler);
+
     ESP_LOGI(TAG, "Sseg initialized!");
 }
 
@@ -62,6 +108,7 @@ void clear_module_sseg() {
 }
 
 void set_game_sseg_num(uint32_t value, uint8_t dot_pos) {
+    uint32_t initial_value = value;
     for (int i = 0; i < 4; i++) {
         auto idx = value % 10;
         sseg->sendChar(3-i, TM16XX_NUMBER_FONT[idx], i == dot_pos);
@@ -70,12 +117,13 @@ void set_game_sseg_num(uint32_t value, uint8_t dot_pos) {
 
     if (is_state_tracking()) {
         char buf[16];
-        sprintf(buf, "%ld,%d", value, dot_pos);
+        sprintf(buf, "%ld,%d", initial_value, dot_pos);
         event_occured("SSEG_G", buf);
     }
 }
 
 void set_module_sseg_num(uint32_t value, uint8_t dot_pos) {
+    uint32_t initial_value = value;
     for (int i = 0; i < 4; i++) {
         auto idx = value % 10;
         sseg->sendChar(7-i, TM16XX_NUMBER_FONT[idx], i == dot_pos);
@@ -84,7 +132,7 @@ void set_module_sseg_num(uint32_t value, uint8_t dot_pos) {
 
     if (is_state_tracking()) {
         char buf[16];
-        sprintf(buf, "%ld,%d", value, dot_pos);
+        sprintf(buf, "%ld,%d", initial_value, dot_pos);
         event_occured("SSEG_M", buf);
     }
 }

main/drivers/sseg.h

@@ -4,8 +4,8 @@
 #include "TM1640/TM1640.h"
 #include <esp_log.h>
 
-#define SSEG_PIN_DATA GPIO_NUM_10
+#define SSEG_PIN_DATA GPIO_NUM_46
-#define SSEG_PIN_CLK  GPIO_NUM_11
+#define SSEG_PIN_CLK  GPIO_NUM_48
 
 extern TM1640* sseg;
 

main/drivers/starcode.cpp

@@ -0,0 +1,275 @@
+#include "starcode.h"
+#include <vector>
+#include <algorithm>
+#include <string.h>
+#include <stdint.h>
+#include <esp_log.h>
+#include "drivers/bottom_half.h"
+#include "char_lcd.h"
+#include "esp_timer.h"
+#include "freertos/task.h"
+
+static const char* TAG = "star_code";
+
+volatile bool handling_new_starcodes = false;
+static volatile bool system_initialized = false;
+
+// TODO: use the semaphore, convert to RWLock?
+static volatile SemaphoreHandle_t star_codes_mutex;
+static std::vector<StarCodeEntry> star_codes;
+
+static const char EMPTY_STAR_CODE_HEADER[] = "          ";
+
+esp_timer_handle_t starcode_delay_timer;
+/// @brief `true` if we are delaying for a starcode
+static volatile bool delaying_for_starcode;
+static volatile StarCodeEntry* current_starcode = nullptr;
+/// @brief `true` when we are handling user input for a starcode
+static volatile bool doing_starcode = false;
+static uint16_t starcode_waiting_on_release;
+static char current[STARCODE_MAX_LEN + 1];
+static size_t current_idx;
+
+// Task handle for the starcode callback task
+static TaskHandle_t starcode_callback_task_handle = nullptr;
+
+static void starcode_callback_task(void* arg) {
+    (void) arg;
+    
+    while (true) {
+        // Wait for notification from starcode_trigger_cb
+        uint32_t notification_value;
+        if (xTaskNotifyWait(0, ULONG_MAX, &notification_value, portMAX_DELAY) == pdTRUE) {
+            // Process the starcode callback
+            delaying_for_starcode = false;
+            lcd_print_header();
+
+            if (current_starcode != nullptr) {
+                if (current_starcode->triggered_sem != nullptr)
+                    xSemaphoreGive(current_starcode->triggered_sem);
+                if (current_starcode->callback != nullptr)
+                    (current_starcode->callback)();
+                
+                current_starcode = nullptr;
+            }
+        }
+    }
+}
+
+static void starcode_trigger_cb(void* arg) {
+    (void) arg;
+
+    if (starcode_callback_task_handle != nullptr) {
+        xTaskNotify(starcode_callback_task_handle, 1, eSetBits);
+    }
+}
+// TODO: rename star code everywhere to starcode
+
+
+void star_code_handle_keypad(uint16_t* just_pressed, uint16_t* just_released) {
+    if ((!delaying_for_starcode) && handling_new_starcodes &&  (*just_pressed & (1 << KeypadKey::star))) {
+        current_idx = 0;
+        current[current_idx] = '\0';
+        doing_starcode = true;
+    }
+    if (doing_starcode) {
+        // If we get a press while handling a starcode, we also want to capture the release of that key.
+        starcode_waiting_on_release |= *just_pressed;
+
+        KeypadKey key;
+        while (take_key(&key, just_pressed)) {
+            if (key == KeypadKey::star) {
+                current_idx = 0;
+                current[current_idx] = '\0';
+            } else if (key == KeypadKey::pound) {
+                doing_starcode = false;
+                if (current_idx != 0) {
+                    trigger_star_code(current);
+                }
+            } else {
+                // shift the digits left if neccesary
+                if (current_idx >= STARCODE_MAX_LEN) {
+                    for (int i = 1; i < current_idx; i++) {
+                        current[i-1] = current[i];
+                    }
+                    current_idx--;
+                }
+                // append the character
+                current[current_idx++] = char_of_keypad_key(key);
+                current[current_idx] = '\0';
+            }
+            lcd_print_header_star_code();
+        }
+    }
+
+    // capture any releases from starcodes
+    uint16_t new_just_released = (*just_released) & (~starcode_waiting_on_release);
+    starcode_waiting_on_release = starcode_waiting_on_release & (~*just_released);
+    *just_released = new_just_released;
+}
+
+void init_star_code_system() {
+    star_codes_mutex = xSemaphoreCreateMutex();
+
+    xTaskCreate(starcode_callback_task, "starcode_cb", 4096, NULL, 3, &starcode_callback_task_handle);
+
+    const esp_timer_create_args_t timer_args = {
+        .callback = &starcode_trigger_cb,
+        .arg = nullptr,
+        .dispatch_method = ESP_TIMER_TASK,
+        .name = "starcode_trigger",
+        .skip_unhandled_events = false,
+    };
+    
+    ESP_ERROR_CHECK(esp_timer_create(&timer_args, &starcode_delay_timer));
+
+    handling_new_starcodes = true;
+    system_initialized = true;
+}
+
+/// Checks if a triggered code matches an expected code.
+/// @return true iff the codes match, where '*'s in the expected code can match any character in the triggered code
+static bool check_code_match(const char* triggered, const char* expected) {
+    size_t triggered_len = strlen(triggered);
+    size_t match_len = strlen(triggered);
+
+    if (triggered_len != match_len) 
+        return false;
+
+    for (int i = 0; i < triggered_len; i++) {
+        if (!(expected[i] == '*' || expected[i] == triggered[i])) {
+            return false;
+        }
+    }
+
+    return true;
+}
+
+bool add_star_code(StarCodeEntry code) {
+    ESP_LOGI(TAG, "Adding starcode: %s", code.code);
+    if (code.code == nullptr || strlen(code.code) > STARCODE_MAX_LEN) {
+        ESP_LOGW(TAG, "invalid code");
+        return false;
+    }
+    if (code.display_text != nullptr && strlen(code.display_text) > STARCODE_DISPLAY_TEXT_MAX_LEN) {
+        ESP_LOGW(TAG, "invalid display_text");
+        return false;
+    }
+
+    // check for a existing entry
+    auto it = std::find_if(star_codes.begin(), star_codes.end(), [&](const StarCodeEntry& other) {
+        return check_code_match(code.code, other.code);
+    });
+
+    if (it != star_codes.end()) {
+        // existing star code found!
+        ESP_LOGW(TAG, "Duplicate starcode %s", code.code);
+        return false;
+    }
+
+    star_codes.push_back(code);
+    return true;
+}
+
+bool add_star_codes(const StarCodeEntry* codes, size_t len) {
+    bool success = true;
+    for (int i = 0; i < len; i++) {
+        if (!add_star_code(codes[i])) {
+            success = false;
+        }
+    }
+    return success;
+}
+
+bool rm_star_code(const char* code) {
+    ESP_LOGI(TAG, "Removing starcode: %s", code);
+
+    auto it = std::find_if(star_codes.begin(), star_codes.end(), [&](const StarCodeEntry& star_code) {
+        return strcmp(code, star_code.code) == 0;
+    });
+    
+    if (it == star_codes.end()) {
+        ESP_LOGW(TAG, "Failed to remove star code %s", code);
+        return false;
+    }
+
+    star_codes.erase(it);
+    return true;
+}
+
+bool rm_star_codes(const StarCodeEntry* codes, size_t len) {
+    bool success = true;
+    for (int i = 0; i < len; i++) {
+        if (!rm_star_code(codes[i].code)) {
+            success = false;
+        }
+    }
+    return success;
+}
+
+bool rm_star_codes_str(const char** codes, size_t len) {
+    bool success = true;
+    for (int i = 0; i < len; i++) {
+        if (!rm_star_code(codes[i])) {
+            success = false;
+        }
+    }
+    return success;
+}
+
+void clear_star_codes() {
+    star_codes.clear();
+}
+
+bool trigger_star_code(const char* code) {
+    auto it = std::find_if(star_codes.begin(), star_codes.end(), [&](const StarCodeEntry& other) {
+        return check_code_match(code, other.code);
+    });
+
+    uint64_t delay_us = 2'000'000;
+    delaying_for_starcode = true;
+    if (it != star_codes.end()) {
+        current_starcode = &*it;
+        delay_us = current_starcode->delay_us;
+    }
+
+    ESP_ERROR_CHECK(esp_timer_start_once(starcode_delay_timer, delay_us));
+
+    return current_starcode != nullptr;
+}
+
+void pause_star_code_system() {
+    doing_starcode = false;
+    handling_new_starcodes = false;
+}
+
+void resume_star_code_system() {
+    handling_new_starcodes = system_initialized;
+}
+
+void lcd_print_header_star_code() {
+    if (!lcd_header_enabled()) return;
+
+    // TODO: consider upping the display text size to be able to overwrite the game_state area.
+    if (delaying_for_starcode) {
+        if (current_starcode == nullptr) {
+            lcd_print(0, 0, "Invalid starcode    ");
+        } else if (current_starcode->display_text != nullptr) {
+            char buf[21];
+            snprintf(buf, sizeof(buf), "%-20s", current_starcode->display_text);
+            lcd_print(0, 0, buf);
+        } else {
+            lcd_print(0, 0, EMPTY_STAR_CODE_HEADER);
+        }
+    } else if (doing_starcode) {
+        char buf[STARCODE_MAX_LEN + 2];
+        snprintf(buf, sizeof(buf), "*%-9s", current);
+        lcd_print(0, 0, buf);
+    } else {
+        lcd_print(0, 0, EMPTY_STAR_CODE_HEADER);
+    }
+}
+
+bool lcd_starcode_displaying_result() {
+    return delaying_for_starcode;
+}

main/drivers/starcode.h

@@ -0,0 +1,90 @@
+#ifndef STAR_CODE_H
+#define STAR_CODE_H
+
+#include <stddef.h>
+#include <freertos/FreeRTOS.h>
+#include <freertos/semphr.h>
+
+/// The max length of a starcode (not counting the star)
+#define STARCODE_MAX_LEN 9
+#define STARCODE_DISPLAY_TEXT_MAX_LEN 20
+
+/// @brief A handler for a specific star code
+struct StarCodeEntry {
+    /// @brief The star code without the star
+    ///
+    /// This must be <= 9 characters.
+    ///
+    /// You may include a * in the code to match on any character
+    const char* code;
+    /// @brief The text to display when the star code is entered (or null).
+    /// 
+    /// This must be <= 20 characters.
+    const char* display_text;
+    /// @brief The number of microseconds to delay when the star code is entered before calling the handler.
+    uint64_t delay_us;
+    /// @brief The function to call when the star code is entered.
+    /// Can be null.
+    void (*callback)(void);
+    /// @brief The binary semaphore that will be given when this star code is triggered.
+    /// Can be null.
+    SemaphoreHandle_t triggered_sem;
+};
+
+/// @brief Initializes the star code system.
+void init_star_code_system();
+
+/// @brief Handles any keypad presses and releases before they bubble up to the rest of the BLK_BOX.
+void star_code_handle_keypad(uint16_t* just_pressed, uint16_t* just_released);
+
+/// @brief Adds a star code to be handled.
+/// @param code the star code to add
+/// @return true iff the star code was added
+bool add_star_code(StarCodeEntry code);
+
+/// @brief Adds a list of star codes to be handled.
+/// @param codes the list of star codes to add
+/// @param len the length of the list
+/// @return true iff all the star codes were added
+bool add_star_codes(const StarCodeEntry* codes, size_t len);
+
+/// @brief removes a star code to stop handling it.
+/// @param code the star code to remove
+/// @return true iff the star code was removed
+bool rm_star_code(const char* code);
+
+/// @brief removes all given star codes to stop handling them.
+/// @param codes the list of star codes to remove
+/// @param len the length of the list
+/// @return true iff all star codes were removed
+bool rm_star_codes(const StarCodeEntry* codes, size_t len);
+
+/// @brief removes all given star codes to stop handling them.
+/// @param codes the list of star codes to remove
+/// @param len the length of the list
+/// @return true iff all star codes were removed
+bool rm_star_codes_str(const char** codes, size_t len);
+
+/// @brief clears all star codes.
+void clear_star_codes();
+
+/// @brief Triggers the given star code.
+/// @param code the star code to trigger (without the *)
+/// @return true iff a star code was triggered
+bool trigger_star_code(const char* code);
+
+
+/// @brief Starts/stops the star code system from handling new star codes.
+/// If one is being handled currently, it is canceled.
+void set_star_code_sys_enabled(bool enable);
+
+/// @return `true` iff the star code system is handling star codes.
+bool star_code_sys_enabled();
+
+/// @brief Prints the star code section of the header to the char_lcd. (row 0, columns 0-9)
+void lcd_print_header_star_code();
+
+/// @return `true` iff the starcode system is using the full header.
+bool lcd_starcode_displaying_result();
+
+#endif /* STAR_CODE_H */

main/drivers/state_tracking.cpp

@@ -1,6 +1,9 @@
 #include "state_tracking.h"
 #include <unistd.h>
 #include <vector>
+#include "wlvgl.h"
+
+static const char* PLAYBACK_TAG = "playback";
 
 enum state_t {
     STATE_IDLE = 0,
@@ -8,7 +11,7 @@ enum state_t {
     STATE_PLAYBACK = 2,
 };
 
-static std::vector<EventCB> event_cbs;
+static std::vector<bool(*)(const char*, char*)> replay_fns;
 
 static bool should_close_recording_stream;
 static FILE* recording_stream;
@@ -17,8 +20,10 @@ TaskHandle_t flush_file_task_handle;
 
 static bool should_close_playback_stream;
 static FILE* playback_stream;
-static volatile state_t state = STATE_IDLE;
+static uint32_t playback_start_time;
+TaskHandle_t playback_task_handle;
 
+static volatile state_t state = STATE_IDLE;
 
 /// @brief Periodically flushes and syncs (if neccesary) the output stream.
 /// @param arg unused.
@@ -37,12 +42,97 @@ static void flush_file_task(void* arg) {
     vTaskDelete(NULL);
 }
 
-void register_event_cb(const char* name, void (*replay_callback)(uint32_t, const char*)) {
+static void playback_task(void* arg) {
-    EventCB event = {
+    const size_t size = 16*1024;
-        .name = name,
+    char* buf = (char*) malloc(size*sizeof(char));
-        .replay_callback = replay_callback,
+    if (buf == nullptr) {
-    };
+        ESP_LOGE(PLAYBACK_TAG, "buf alloc failure");
-    event_cbs.push_back(event);
+        vTaskDelete(NULL);
+    }
+
+    while (state == STATE_PLAYBACK && playback_stream != nullptr) {
+        char* ret = fgets(buf, size, playback_stream);
+        if (ret == nullptr) {
+            break;
+        }
+        if (buf[0] == '\0') {
+            ESP_LOGI(PLAYBACK_TAG, "playback done");
+            break;
+        }
+        // get rid of the '\n' and possibly '\r' in the string
+        for (int i = 0; i < size; i++) {
+            if (buf[i] == '\0') break;
+            if (buf[i] == '\r' || buf[i] == '\n') {
+                buf[i] = '\0';
+                break;
+            }
+        }
+        ESP_LOGI(PLAYBACK_TAG, "handling: %s", buf);
+
+        // look for a comma, indicating the end of the "ticks" part
+        // TODO: replace with strtok
+        size_t comma_pos = 0;
+        for (int i = 0; i < 11; i++) {
+            if (buf[i] == ',') {
+                comma_pos = i;
+                break;
+            }
+        }
+        if (comma_pos == 0) {
+            ESP_LOGE(PLAYBACK_TAG, "Failed to find comma in playback line");
+            continue;
+        }
+
+        buf[comma_pos] = '\0';
+        uint32_t tick = atoi(buf);
+
+        // now look for the colon to indicate the end of the event name
+        size_t colon_pos = 0;
+        int i = comma_pos + 1; // start looking right after the comma
+        while (i < size) {
+            if (buf[i] == ':') {
+                colon_pos = i;
+                break;
+            }
+            i++;
+        }
+        if (colon_pos == 0) {
+            ESP_LOGE(PLAYBACK_TAG, "Failed to find colon in playback line");
+            continue;
+        }
+
+        buf[colon_pos] = '\0';
+        char* event_name = buf + (comma_pos + 1);
+        char* arg = buf + (colon_pos + 1);
+
+        int32_t ticks_to_wait = ((int32_t) tick) - (int32_t)(xTaskGetTickCount() - playback_start_time);
+
+        if (ticks_to_wait < 0) {
+            ESP_LOGW(PLAYBACK_TAG, "Playback is behind by %ld ticks!", ticks_to_wait);
+        }
+        if (ticks_to_wait > 0) {
+            vTaskDelay(ticks_to_wait);
+        }
+        
+        bool matched = false;
+        for (const auto& fn : replay_fns) {
+            matched = (fn)(event_name, arg);
+            if (matched) break;
+        }
+        if (!matched) {
+            ESP_LOGW(PLAYBACK_TAG, "Failed to match event: %s!", event_name);
+        }
+    }
+
+    free(buf);
+    playback_task_handle = NULL;
+
+    stop_playback();
+    vTaskDelete(NULL);
+}
+
+void register_replay_fn(bool (*replay_fn)(const char*, char*)) {
+    replay_fns.push_back(replay_fn);
 }
 
 void event_occured(const char* name, const char* arg) {
@@ -81,6 +171,7 @@ bool start_recording() {
     state = STATE_RECORDING;
     recording_start_time = xTaskGetTickCount();
     xTaskCreate(flush_file_task, "flush_recording", 2048, NULL, 2, &flush_file_task_handle);
+    reset_wlv_tables(); // TODO: generify this
     return true;
 }
 
@@ -102,13 +193,31 @@ bool stop_recording() {
 }
 
 bool start_playback() {
-    // TODO: impl
+    if (state != STATE_IDLE) return false;
-    return false;
+    if (playback_stream == nullptr) return false;
+
+    state = STATE_PLAYBACK;
+    playback_start_time = xTaskGetTickCount();
+    xTaskCreate(playback_task, "playback", 4096, NULL, 2, &playback_task_handle);
+    reset_wlv_tables(); // TODO: generify this
+    return true;
 }
 
 bool stop_playback() {
-    // TODO: impl
+    if (state != STATE_PLAYBACK) return false;
-    return false;
+    
+    state = STATE_IDLE;
+    if (should_close_playback_stream) {
+        fclose(playback_stream);
+        playback_stream = nullptr;
+    }
+
+    if (playback_task_handle != nullptr) {
+        // TODO: NO!! This leaks the malloc. Instead, use a queue to request a graceful stop
+        vTaskDelete(playback_task_handle);
+        playback_task_handle = NULL;
+    }
+    return true;
 }
 
 bool is_state_tracking() {

main/drivers/state_tracking.h

@@ -4,20 +4,9 @@
 #include <stdint.h>
 #include "esp_vfs_fat.h"
 
-/// @brief An event that represents the physical bomb state moving.
+/// @brief Registers function to be called on replay.
-struct EventCB {
+/// @param replay_callback A function to call to playback the event.
-    // The name of the event.
+void register_replay_fn(bool (*replay_fn)(const char*, char*));
-    // This should not contain whitespace or the characters ':', ','
-    const char* name;
-    // An optional callback function for recreating the state.
-    // Arguments are "ticks" and the serialized argument
-    void (*replay_callback)(uint32_t, const char*);
-};
-
-/// @brief Registers a callback for a certain event to be called on replay.
-/// @param name The name of the event to respond to.
-/// @param replay_callback A function to call to playback this state transition.
-void register_event_cb(const char* name, void (*replay_callback)(uint32_t, const char*));
 
 // TODO: add one for generically responding to all events.
 

main/drivers/tft.cpp

@@ -1,4 +1,5 @@
 #include "tft.h"
+#include "state_tracking.h"
 
 static const char* TAG = "tft";
 
@@ -16,16 +17,28 @@ static lv_style_t style_screen;
 
 SemaphoreHandle_t xGuiSemaphore;
 
+static bool replay_handler(const char* event, char* arg) {
+    return false;
+}
+
 static bool notify_lvgl_flush_ready(
     esp_lcd_panel_io_handle_t panel_io,
     esp_lcd_panel_io_event_data_t *edata,
     void *user_ctx
 ) {
-    lv_disp_drv_t *disp_driver = (lv_disp_drv_t *)user_ctx;
+    lv_disp_drv_t* disp_driver = (lv_disp_drv_t *)user_ctx;
     lv_disp_flush_ready(disp_driver);
     return false;
 }
 
+const char base64_chars[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+/// Base 64 encodes a u16... sort of. This doesn't do any of the fancy padding stuff.
+static void encode_base64(char* buf, size_t start_idx, uint16_t value) {
+    buf[start_idx+0] = base64_chars[(value >> 10) & 0x3F];
+    buf[start_idx+1] = base64_chars[(value >> 4) & 0x3F];
+    buf[start_idx+2] = base64_chars[(value << 2) & 0x3F];
+}
+
 static void lvgl_flush_cb(lv_disp_drv_t *drv, const lv_area_t *area, lv_color_t *color_map) {
     esp_lcd_panel_handle_t panel_handle = (esp_lcd_panel_handle_t) drv->user_data;
 
@@ -33,7 +46,46 @@ static void lvgl_flush_cb(lv_disp_drv_t *drv, const lv_area_t *area, lv_color_t
     int offsetx2 = area->x2;
     int offsety1 = area->y1;
     int offsety2 = area->y2;
+
     esp_lcd_panel_draw_bitmap(panel_handle, offsetx1, offsety1, offsetx2 + 1, offsety2 + 1, color_map);
+
+    // TODO: change this to be a kconfig value
+    #if false
+
+    if (is_state_tracking()) {
+        size_t size = (offsetx2 + 1 - offsetx1) * (offsety2 + 1 - offsety1) + 1;
+        // if (size > 1024) {
+        //     ESP_LOGW("tft_track_state", "Write too big (%d)! truncating to 1024!", size);
+        // }
+        // size = MIN(1024, size);
+
+
+        // 24 bytes for the offsets
+        // 3 bytes per encoded color
+        // 1 byte for null terminator
+        size_t alloc_size = 24 + size * 3 + 1;
+        char* buf = (char*)malloc(alloc_size);
+
+        if (buf != nullptr) {
+            size_t initial_offset = sprintf(buf, "%d,%d,%d,%d:", offsetx1, offsety1, offsetx2 + 1, offsety2 + 1);
+
+            for (size_t i = 0; i < size; i++) {
+                size_t index = initial_offset + i * 3;
+
+                // we assume that the size of the color data is 16b
+                static_assert(sizeof(lv_color_t) == sizeof(uint16_t), "lv_color_t must be 16b wide");
+                encode_base64(buf, index, color_map[i].full);
+            }
+            buf[initial_offset + (size-1) * 3 + 1] = '\0';
+
+            event_occured("TFT_W", buf);
+            free(buf);
+        } else {
+            ESP_LOGE("tft_track_state", "buffer alloc failed!");
+        }
+    }
+
+    #endif
 }
 
 static void IRAM_ATTR lv_tick_task(void *param) {
@@ -150,10 +202,10 @@ static void guiTask(void *pvParameter) {
     ESP_ERROR_CHECK(esp_timer_create(&lvgl_tick_timer_args, &periodic_timer));
     ESP_ERROR_CHECK(esp_timer_start_periodic(periodic_timer, LVGL_UPDATE_PERIOD_MS * 1000));
 
-    screen = lv_disp_get_scr_act(NULL);
+    screen = lv_scr_act();
     lv_style_init(&style_screen);
     lv_style_set_bg_color(&style_screen, lv_color_black());
-    lv_obj_add_style(lv_scr_act(), &style_screen, LV_STATE_DEFAULT);
+    lv_obj_add_style(screen, &style_screen, LV_STATE_DEFAULT);
 
     while (1) {
         /* Delay 1 tick (assumes FreeRTOS tick is 10ms */
@@ -169,14 +221,6 @@ static void guiTask(void *pvParameter) {
     vTaskDelete(NULL);
 }
 
-static void tick_timer_task(void* arg) {
-    while (1)
-    {
-        lv_task_handler();
-        vTaskDelay(pdMS_TO_TICKS(10));
-    }
-}
-
 void init_tft() {
     ESP_LOGI(TAG, "Initializing TFT...");
 
@@ -184,7 +228,7 @@ void init_tft() {
     initialize_display();
     xTaskCreatePinnedToCore(guiTask, "gui", 4096*2, NULL, 5, NULL, 1);
 
-    // xTaskCreatePinnedToCore(tick_timer_task, "tick_lvgl", 4096, NULL, 5, NULL, 1);
+    register_replay_fn(replay_handler);
 
     ESP_LOGI(TAG, "TFT initialized!");
 }

main/drivers/tft.h

@@ -44,11 +44,11 @@
 #define SPI_MAX_TRANSFER_SIZE 32768
 
 #define TFT_PIN_MOSI GPIO_NUM_17
-#define TFT_PIN_MISO GPIO_NUM_18
+#define TFT_PIN_MISO GPIO_NUM_16
-#define TFT_PIN_CLK GPIO_NUM_16
+#define TFT_PIN_CLK GPIO_NUM_18
 #define TFT_PIN_CS GPIO_NUM_NC
-#define TFT_PIN_DC GPIO_NUM_15
+#define TFT_PIN_DC GPIO_NUM_8
-#define TFT_PIN_RESET GPIO_NUM_8
+#define TFT_PIN_RESET GPIO_NUM_9
 
 #define TFT_INVERT_COLOR false
 

main/drivers/wires.cpp

@@ -2,6 +2,9 @@
 
 extern uint32_t current_step;
 
+/// The mutex for accessing `I2C_NUM_1` (wires I2C bus).
+SemaphoreHandle_t wires_i2c_mutex;
+
 uint32_t total_strikes;
 uint32_t step_strikes[N_STEPS] = {0};
 uint32_t step_finish_times[N_STEPS] = {0};
@@ -26,21 +29,25 @@ static void receive_button(void);
 void init_wires(void) {
     i2c_config_t wires_conf = {
         .mode = I2C_MODE_MASTER,
-        .sda_io_num = GPIO_NUM_41,
+        .sda_io_num = PIN_WIRES_SDA,
-        .scl_io_num = GPIO_NUM_42,
+        .scl_io_num = PIN_WIRES_SCL,
         .sda_pullup_en = GPIO_PULLUP_ENABLE,
         .scl_pullup_en = GPIO_PULLUP_ENABLE,
         .master = {
             .clk_speed = 100000,
-        }
+        },
     };
 
-    gpio_reset_pin(GPIO_NUM_41);
+    gpio_reset_pin(PIN_WIRES_SDA);
-    gpio_reset_pin(GPIO_NUM_42);
+    gpio_reset_pin(PIN_WIRES_SCL);
 
     ESP_ERROR_CHECK(i2c_param_config(WIRES_I2C_NUM, &wires_conf));
     ESP_ERROR_CHECK(i2c_driver_install(WIRES_I2C_NUM, wires_conf.mode, 0, 0, 0));
 
+    // Create mutex for wires I2C bus
+    wires_i2c_mutex = xSemaphoreCreateMutex();
+    assert(wires_i2c_mutex != NULL);
+
     gpio_config_t int_pin_conf = {};
     // delta_pin_conf.intr_type = GPIO_INTR_LOW_LEVEL;
     int_pin_conf.mode = GPIO_MODE_INPUT;
@@ -85,45 +92,55 @@ void clear_wires_pressed_released_cut(void) {
 
 void strike(const char* reason) {
     ESP_LOGW("strike!", "%s", reason);
-    lcd_print(0, 3, reason);
+    lcd_print(3, 0, reason);
     time_penalty(STRIKE_TIME_PENALTY);
     if (current_step > 0 && current_step <= N_STEPS) {
         total_strikes += 1;
         step_strikes[current_step - 1] += 1;
     }
     uint8_t reg = 6;
+    xSemaphoreTake(wires_i2c_mutex, portMAX_DELAY);
     ESP_ERROR_CHECK_WITHOUT_ABORT(i2c_master_write_to_device(WIRES_I2C_NUM, WIRES_I2C_ADDR, &reg, 1, (100 / portTICK_PERIOD_MS)));
+    xSemaphoreGive(wires_i2c_mutex);
 }
 
 void set_leds(uint8_t led_states) {
     buf[0] = 5; // register 5
     buf[1] = led_states;
+    xSemaphoreTake(wires_i2c_mutex, portMAX_DELAY);
     ESP_ERROR_CHECK_WITHOUT_ABORT(i2c_master_write_to_device(WIRES_I2C_NUM, WIRES_I2C_ADDR, buf, 2, (100 / portTICK_PERIOD_MS)));
+    xSemaphoreGive(wires_i2c_mutex);
 }
 
 static uint8_t receive_delta(void) {
     uint8_t reg = 1;
     buf[0] = 0;
+    xSemaphoreTake(wires_i2c_mutex, portMAX_DELAY);
     ESP_ERROR_CHECK_WITHOUT_ABORT(i2c_master_write_read_device(WIRES_I2C_NUM, WIRES_I2C_ADDR, &reg, 1, buf, 1, (100 / portTICK_PERIOD_MS)));
+    xSemaphoreGive(wires_i2c_mutex);
     return buf[0];
 }
 
 static void receive_wires(void) {
     uint8_t reg = 2;
     buf[0] = 0;
+    xSemaphoreTake(wires_i2c_mutex, portMAX_DELAY);
     ESP_ERROR_CHECK_WITHOUT_ABORT(i2c_master_write_read_device(WIRES_I2C_NUM, WIRES_I2C_ADDR, &reg, 1, buf, 1, (100 / portTICK_PERIOD_MS)));
+    xSemaphoreGive(wires_i2c_mutex);
     uint8_t new_wires = buf[0];
-
+    
     uint8_t just_cut = ~new_wires & wires_state;
     wires_cut |= just_cut;
-
+    
     wires_state = new_wires;
 }
 
 static void receive_button(void) {
     uint8_t reg = 3;
     buf[0] = 0;
+    xSemaphoreTake(wires_i2c_mutex, portMAX_DELAY);
     ESP_ERROR_CHECK_WITHOUT_ABORT(i2c_master_write_read_device(WIRES_I2C_NUM, WIRES_I2C_ADDR, &reg, 1, buf, 1, (100 / portTICK_PERIOD_MS)));
+    xSemaphoreGive(wires_i2c_mutex);
     bool new_button = buf[0] != 0;
 
     bool just_pressed = new_button & !button_state;

main/drivers/wires.h

@@ -5,14 +5,22 @@
 #include <driver/i2c.h>
 #include <driver/gpio.h>
 #include <esp_log.h>
+#include "freertos/FreeRTOS.h"
+#include "freertos/semphr.h"
 #include "drivers/char_lcd.h"
 #include "drivers/game_timer.h"
 #include "main.h"
+#include "perh.h"
 
-#define WIRES_PIN_DELTA GPIO_NUM_2
+#define WIRES_PIN_DELTA PIN_PERH3
+#define PIN_WIRES_SDA PIN_PERH1
+#define PIN_WIRES_SCL PIN_PERH2
 #define WIRES_I2C_NUM I2C_NUM_1
 #define WIRES_I2C_ADDR 125
 
+/// The mutex for accessing `I2C_NUM_1` (wires I2C bus).
+extern SemaphoreHandle_t wires_i2c_mutex;
+
 #define DELTA_BIT_WIRES 0
 #define DELTA_BIT_BUTTON 1
 

main/drivers/wlvgl.cpp

@@ -0,0 +1,152 @@
+#include "wlvgl.h"
+#include <vector>
+
+/// A table that maps an incrementing integer to a style reference
+static std::vector<lv_style_t*> style_table;
+
+/// A table that maps an incrementing integer to a style reference
+static std::vector<lv_obj_t*> obj_table;
+
+static int index_of_style(lv_style_t* style) {
+    for (size_t i = 0; i < style_table.size(); i++) {
+        if (style_table[i] == style) {
+            return i;
+        }
+    }
+    return -1;
+}
+
+static int index_of_obj(lv_obj_t* obj) {
+    for (size_t i = 0; i < obj_table.size(); i++) {
+        if (obj_table[i] == obj) {
+            return i;
+        }
+    }
+    return -1;
+}
+
+
+void reset_wlv_tables() {
+    style_table.clear();
+    obj_table.clear();
+}
+
+lv_obj_t * wlv_obj_create(lv_obj_t* parent) {
+    // initialize the obj
+    lv_obj_t* value = lv_obj_create(parent);
+    
+    if (is_state_tracking()) {
+        // add the style to the table
+        obj_table.push_back(value);
+        size_t obj_index = obj_table.size();
+
+		char buf[8];
+		sprintf(buf, "%d", obj_index);
+		event_occured("lv_obj_create", buf);
+	}
+    return value;
+}
+
+void wlv_style_init(lv_style_t* style) {
+    // initialize the style
+    lv_style_init(style);
+
+    if (is_state_tracking()) {
+        // add the style to the table
+        style_table.push_back(style);
+        size_t style_index = style_table.size();
+
+		char buf[8];
+		sprintf(buf, "%d", style_index);
+		event_occured("lv_style_init", buf);
+	}
+}
+
+void wlv_obj_set_style_bg_color(lv_obj_t* obj, lv_color_t value, lv_style_selector_t selector) {
+    lv_obj_set_style_bg_color(obj, value, selector);
+
+    if (is_state_tracking()) {
+        int obj_index = index_of_obj(obj);
+		char buf[64];
+		sprintf(buf, "%d,%d,%ld", obj_index, value.full, selector);
+		event_occured("lv_obj_set_style_bg_color", buf);
+	}
+}
+
+
+void wlv_style_set_text_color() {
+    
+}
+
+void wlv_style_set_text_align() {
+
+}
+
+void wlv_obj_align() {
+
+}
+
+void wlv_obj_set_size() {
+
+}
+
+void wlv_obj_add_style() {
+
+}
+
+void wlv_obj_set_style_text_align() {
+
+}
+
+void wlv_label_set_text() {
+
+}
+
+void wlv_scr_load() {
+
+}
+
+void wlv_scr_act() {
+
+}
+
+void wlv_style_set_bg_color() {
+
+}
+
+void wlv_style_set_bg_opa() {
+
+}
+
+void wlv_obj_set_width() {
+
+}
+
+void wlv_style_set_text_font() {
+    
+}
+
+void wlv_label_create() {
+
+}
+
+void wlv_obj_del() {
+
+}
+
+void wlv_obj_center() {
+
+}
+
+void wlv_obj_remove_style() {
+
+}
+
+void wlv_obj_add_flag() {
+
+}
+
+void wlv_obj_clear_flag() {
+
+}
+

main/drivers/wlvgl.h

@@ -0,0 +1,32 @@
+#ifndef WLVGL_H
+#define WLVGL_H
+
+#include "lvgl.h"
+#include "state_tracking.h"
+
+void reset_wlv_tables();
+
+lv_obj_t* wlv_obj_create(lv_obj_t* parent);
+void wlv_style_init(lv_style_t* style);
+void wlv_obj_set_style_bg_color(struct _lv_obj_t * obj, lv_color_t value, lv_style_selector_t selector);
+void wlv_style_set_text_color();
+void wlv_style_set_text_align();
+void wlv_obj_align();
+void wlv_obj_set_size();
+void wlv_obj_add_style();
+void wlv_obj_set_style_text_align();
+void wlv_label_set_text();
+void wlv_scr_load();
+void wlv_scr_act();
+void wlv_style_set_bg_color();
+void wlv_style_set_bg_opa();
+void wlv_obj_set_width();
+void wlv_style_set_text_font();
+void wlv_label_create();
+void wlv_obj_del();
+void wlv_obj_center();
+void wlv_obj_remove_style();
+void wlv_obj_add_flag();
+void wlv_obj_clear_flag();
+
+#endif /* WLVGL_H */

main/helper.cpp

@@ -17,76 +17,10 @@ void clean_bomb(void) {
     set_module_sseg_raw(clear);
 
     // clear char lcd
-    lcd_clear();
     lcd_set_cursor_vis(false);
-    lcd_cursor_home();
+    lcd_clear();
-}
 
-static const int STRING_MAX_LEN = 8;
+    // TODO: add stuff for starcode system
-void do_star_codes(StarCodeHandler* star_codes, int star_codes_len) {
-    KeypadKey key;
-
-    int current_idx = 0;
-    char current[STRING_MAX_LEN+1] = {0};
-
-    while (1) {
-        while (get_keypad_pressed(&key)) {
-            if (key == KeypadKey::star) {
-                current[0] = '*';
-                for (int i = 1; i < STRING_MAX_LEN; i++) {
-                    current[i] = 0;
-                }
-                current_idx = 1;
-            } else if (key == KeypadKey::pound) {
-                // submit
-                if (current[0] == '\0') {
-                    continue;
-                }
-
-                bool hit = false;
-                for (int i = 0; i < star_codes_len; i++) {
-                    StarCodeHandler sch = star_codes[i];
-                    if (strcmp(current, sch.code) == 0) {
-                        hit = true;
-                        lcd_print(1, 2, sch.display_text);
-                        vTaskDelay(pdMS_TO_TICKS(2000));
-                        if (sch.callback != nullptr) {
-                            (sch.callback)();
-                        }
-                        if (sch.should_exit) {
-                            return;
-                        }
-                        break;
-                    }
-                }
-                
-                if (!hit) {
-                    lcd_print(1, 2, "Invalid Star Code");
-                    vTaskDelay(pdMS_TO_TICKS(2000));
-                }
-                
-                // clear
-                for (int i = 0; i < STRING_MAX_LEN; i++) {
-                    current[i] = 0;
-                }
-                current_idx = 0;
-            } else {
-                // out of room. skip
-                if (current_idx >= STRING_MAX_LEN) break;
-                // no code started.
-                if (current[0] != '*') continue;
-
-                char c = char_of_keypad_key(key);
-                current[current_idx++] = c;
-            }
-            // ESP_LOGI(STEP0_TAG, "Pressed: %c", c);
-
-            lcd_clear();
-            lcd_print(1, 1, current);
-        }
-
-        vTaskDelay(pdMS_TO_TICKS(10));
-    }
 }
 
 static lv_obj_t* old_scr;
@@ -120,7 +54,6 @@ void display_game_results(void) {
     
     lv_style_init(&game_results_style);
     lv_style_set_text_color(&game_results_style, lv_color_white());
-    // lv_style_set_bg_color(&game_results_style, lv_color_black());
     lv_style_set_text_align(&game_results_style, LV_TEXT_ALIGN_LEFT);
 
     overall_results_label = lv_label_create(scr);

main/helper.h

@@ -10,20 +10,11 @@
 #include "drivers/speaker.h"
 #include "drivers/tft.h"
 
-struct StarCodeHandler {
-    const char* code;
-    const char* display_text;
-    bool should_exit;
-    void (*callback)(void);
-};
-
 // TODO: add something for RNG.
-// TODO: add something for colors, to make everything consistant.
 
 /// Clears most persistant bomb state
 void clean_bomb(void);
 void poster_child_task(void* arg);
-void do_star_codes(StarCodeHandler* star_codes, int star_codes_len);
 void display_game_results();
 
 #endif /* HELPER_H */

main/main.cpp

@@ -5,6 +5,7 @@
 #include "freertos/FreeRTOS.h"
 #include "freertos/task.h"
 #include "esp_rom_gpio.h"
+#include "esp_heap_caps.h"
 
 #include "drivers/all.h"
 #include "drivers/state_tracking.h"
@@ -35,6 +36,10 @@ extern "C" void app_main(void) {
     init_wires();
     vTaskDelay(pdMS_TO_TICKS(1000));
 
+    clean_bomb();
+    lcd_do_splash();
+    step0();
+
     // set_recording_source(stdout, false);
     FILE* record_file = fopen(MOUNT_POINT "/record.txt", "w");
     if (record_file == nullptr) {
@@ -43,11 +48,6 @@ extern "C" void app_main(void) {
     set_recording_source(record_file, true);
     start_recording();
 
-    clean_bomb();
-    step0();
-
-    stop_recording();
-
     set_game_time(initial_game_time);
     start_game_timer();
     total_strikes = 0;
@@ -83,5 +83,6 @@ extern "C" void app_main(void) {
     play_clip_wav(MOUNT_POINT "/diffuse.wav", true, false, 3, 0);
 
     display_game_results();
+    stop_recording();
 
 }

main/steps/setup_wires.cpp

@@ -11,7 +11,7 @@ void print_wires(WireColor* wires, int editing_idx) {
     lcd_print(1, 1, string_buf);
 
     cut_to_string(cut, string_buf);
-    lcd_print(1, 2, string_buf);
+    lcd_print(2, 1, string_buf);
 
     wires_state = get_wires();
     for (int i = 0; i < NUM_WIRES; i++) {
@@ -21,16 +21,17 @@ void print_wires(WireColor* wires, int editing_idx) {
             string_buf[i] = '!';
         }
     }
-    lcd_print(1, 3, string_buf);
+    lcd_print(3, 1, string_buf);
 
-    lcd_set_cursor_pos(editing_idx+1, 1);
+    lcd_set_cursor_vis(true);
+    lcd_set_cursor_resting_position(1, editing_idx+1);
 }
 
 void setup_wires(void) {
     clear_all_pressed_released();
     get_cut_wires();
     lcd_clear();
-    lcd_set_cursor_vis(false);
+    lcd_set_cursor_vis(true);
 
     WireColor wires[NUM_WIRES];
     load_wires_from_sd_card(wires);

main/steps/step0.cpp

@@ -1,4 +1,5 @@
 #include "step0.h"
+#include "drivers/state_tracking.h"
 
 static const char* TAG = "step0";
 
@@ -34,131 +35,183 @@ static void battery_stats() {
     }
 }
 
-/// Wait for "*9819"
+// TODO: remove. This is temperary
+static void replay_last() {
+    FILE* record_file = fopen(MOUNT_POINT "/record.txt", "r");
+    if (record_file == nullptr) {
+        ESP_LOGE("main", "failed to open record.txt");
+    }
+    set_playback_source(record_file, true);
+    start_playback();
+}
+
+
 void step0() {
     led_set(IndicatorLED::LED_SPEAKER, LEDColor::LED_COLOR_BLUE);
     leds_flush();
 
-    StarCodeHandler star_codes[] = {
+    SemaphoreHandle_t continue_sem = xSemaphoreCreateBinary();
+    if (continue_sem == nullptr) {
+        ESP_LOGE(TAG, "could not create semaphore");
+        return;
+    }
+
+    StarCodeEntry star_codes[] = {
         {
-            .code = "*9819",
+            .code = "9819",
-            .display_text = "Defusal Initiated",
+            .display_text = "Diffusal Initiated",
-            .should_exit = true,
+            .delay_us = 2'000'000,
             .callback = nullptr,
+            .triggered_sem = continue_sem,
         },
         {
-            .code = "*59861",
+            .code = "59860",
-            .display_text = "Set Up Wires",
+            .display_text = "Hardware Config",
-            .should_exit = false,
+            .delay_us = 2'000'000,
+            .callback = hardware_config,
+            .triggered_sem = nullptr,
+        },
+        {
+            .code = "59861",
+            .display_text = "Setup Wires",
+            .delay_us = 2'000'000,
             .callback = setup_wires,
+            .triggered_sem = nullptr,
         },
         {
-            .code = "*59862",
+            .code = "59862",
             .display_text = "Set Game Time",
-            .should_exit = false,
+            .delay_us = 2'000'000,
             .callback = set_game_time,
+            .triggered_sem = nullptr,
         },
         {
-            .code = "*59863",
+            .code = "59863",
-            .display_text = "Debug Switches",
+            .display_text = "Debug switches",
-            .should_exit = false,
+            .delay_us = 2'000'000,
             .callback = debug_switches,
+            .triggered_sem = nullptr,
         },
         {
-            .code = "*59864",
+            .code = "59864",
             .display_text = "Battery Stats",
-            .should_exit = false,
+            .delay_us = 2'000'000,
             .callback = battery_stats,
+            .triggered_sem = nullptr,
         },
         {
-            .code = "*59871",
+            .code = "59871",
             .display_text = "Try Step 1",
-            .should_exit = false,
+            .delay_us = 2'000'000,
             .callback = try_step1,
+            .triggered_sem = nullptr,
         },
         {
-            .code = "*59872",
+            .code = "59872",
             .display_text = "Try Step 2",
-            .should_exit = false,
+            .delay_us = 2'000'000,
             .callback = try_step2,
+            .triggered_sem = nullptr,
         },
         {
-            .code = "*59873",
+            .code = "59873",
             .display_text = "Try Step 3",
-            .should_exit = false,
+            .delay_us = 2'000'000,
             .callback = try_step3,
+            .triggered_sem = nullptr,
         },
         {
-            .code = "*59874",
+            .code = "59874",
             .display_text = "Try Step 4",
-            .should_exit = false,
+            .delay_us = 2'000'000,
             .callback = try_step4,
+            .triggered_sem = nullptr,
         },
         {
-            .code = "*59875",
+            .code = "59875",
             .display_text = "Try Step 5",
-            .should_exit = false,
+            .delay_us = 2'000'000,
             .callback = try_step5,
+            .triggered_sem = nullptr,
         },
         {
-            .code = "*59876",
+            .code = "59876",
             .display_text = "Try Step 6",
-            .should_exit = false,
+            .delay_us = 2'000'000,
             .callback = try_step6,
+            .triggered_sem = nullptr,
         },
         {
-            .code = "*59881",
+            .code = "59881",
             .display_text = "Skip To Step 1",
-            .should_exit = true,
+            .delay_us = 2'000'000,
             .callback = skip_to_step1,
+            .triggered_sem = continue_sem,
         },
         {
-            .code = "*59882",
+            .code = "59882",
             .display_text = "Skip To Step 2",
-            .should_exit = true,
+            .delay_us = 2'000'000,
             .callback = skip_to_step2,
+            .triggered_sem = continue_sem,
         },
         {
-            .code = "*59883",
+            .code = "59883",
             .display_text = "Skip To Step 3",
-            .should_exit = true,
+            .delay_us = 2'000'000,
             .callback = skip_to_step3,
+            .triggered_sem = continue_sem,
         },
         {
-            .code = "*59884",
+            .code = "59884",
             .display_text = "Skip To Step 4",
-            .should_exit = true,
+            .delay_us = 2'000'000,
             .callback = skip_to_step4,
+            .triggered_sem = continue_sem,
         },
         {
-            .code = "*59885",
+            .code = "59885",
             .display_text = "Skip To Step 5",
-            .should_exit = true,
+            .delay_us = 2'000'000,
             .callback = skip_to_step5,
+            .triggered_sem = continue_sem,
         },
         {
-            .code = "*59886",
+            .code = "59886",
             .display_text = "Skip To Step 6",
-            .should_exit = true,
+            .delay_us = 2'000'000,
             .callback = skip_to_step6,
+            .triggered_sem = continue_sem,
         },
         {
-            .code = "*1111",
+            .code = "1111",
             .display_text = "Issue Strike",
-            .should_exit = false,
+            .delay_us = 2'000'000,
             .callback = issue_strike,
+            .triggered_sem = nullptr,
         },
         {
-            .code = "*1112",
+            .code = "1112",
             .display_text = "????",
-            .should_exit = false,
+            .delay_us = 2'000'000,
             .callback = flashbang,
+            .triggered_sem = nullptr,
+        },
+        {
+            .code = "1113",
+            .display_text = "replay",
+            .delay_us = 2'000'000,
+            .callback = replay_last,
+            .triggered_sem = continue_sem,
         },
     };
-    int len = sizeof(star_codes)/sizeof(StarCodeHandler);
+    size_t len = sizeof(star_codes)/sizeof(star_codes[0]);
-    do_star_codes(star_codes, len);
-}
 
+    add_star_codes(star_codes, len);
+    xSemaphoreTake(continue_sem, portMAX_DELAY);
+    rm_star_codes(star_codes, len);
+    vSemaphoreDelete(continue_sem);
+}
 
 static const int CURSOR_POS_MAP[5] = {1, 3, 4, 6, 7};
 static char str_buf[18] = {0};
@@ -168,7 +221,8 @@ static void _update_display(uint8_t* digits, uint8_t cursor_pos) {
     lcd_print(1, 1, str_buf);
     cursor_pos = MAX(0, MIN(4, cursor_pos));
     int mapped_cursor_pos = CURSOR_POS_MAP[cursor_pos];
-    lcd_set_cursor_pos(mapped_cursor_pos, 1);
+
+    lcd_set_cursor_resting_position(1, mapped_cursor_pos);
 }
 
 static void set_game_time() {
@@ -289,32 +343,32 @@ static void debug_switches() {
     while (1) {
         if (get_button_pressed(&button)) {
             sprintf(buf, "Button Pressed: %d ", button);
-            lcd_print(0, 3, buf);
+            lcd_print(3, 0, buf);
             ESP_LOGI(TAG, "%s", buf);
         }
         if (get_button_released(&button)) {
             sprintf(buf, "Button Released: %d", button);
-            lcd_print(0, 3, buf);
+            lcd_print(3, 0, buf);
             ESP_LOGI(TAG, "%s", buf);
         }
         if (get_switch_flipped_down(&switch_)) {
             sprintf(buf, "Switch Down: %d    ", switch_);
-            lcd_print(0, 3, buf);
+            lcd_print(3, 0, buf);
             ESP_LOGI(TAG, "%s", buf);
         }
         if (get_switch_flipped_up(&switch_)) {
             sprintf(buf, "Switch Up: %d      ", switch_);
-            lcd_print(0, 3, buf);
+            lcd_print(3, 0, buf);
             ESP_LOGI(TAG, "%s", buf);
         }
         if (get_switch_touch_pressed(&switch_)) {
             sprintf(buf, "Switch Touch: %d   ", switch_);
-            lcd_print(0, 3, buf);
+            lcd_print(3, 0, buf);
             ESP_LOGI(TAG, "%s", buf);
         }
         if (get_switch_touch_released(&switch_)) {
             sprintf(buf, "Switch Un-touch: %d", switch_);
-            lcd_print(0, 3, buf);
+            lcd_print(3, 0, buf);
             ESP_LOGI(TAG, "%s", buf);
         }
 
@@ -323,7 +377,7 @@ static void debug_switches() {
             switch_touch_state = new_switch_touch_state;
             print_4bin_rev(bin_buf, switch_touch_state);
             sprintf(buf, "t: %s", bin_buf);
-            lcd_print(1, 0, buf);
+            lcd_print(0, 1, buf);
             ESP_LOGI(TAG, "%s", buf);
         }
 
@@ -341,7 +395,7 @@ static void debug_switches() {
             button_state = new_button_state;
             print_4bin_rev(bin_buf, button_state);
             sprintf(buf, "b: %s", bin_buf);
-            lcd_print(1, 2, buf);
+            lcd_print(2, 1, buf);
             ESP_LOGI(TAG, "%s", buf);
         }
         

main/steps/step0.h

@@ -1,13 +1,9 @@
 #ifndef STEP_0_H
 #define STEP_0_H
 
-#include "../drivers/bottom_half.h"
+#include "../drivers/all.h"
-#include "../drivers/char_lcd.h"
-#include "../drivers/wires.h"
-#include "../drivers/power.h"
-#include "setup_wires.h"
-#include "../helper.h"
 
+#include "setup_wires.h"
 #include "step1.h"
 #include "step2.h"
 #include "step3.h"

main/steps/step1.cpp

@@ -199,25 +199,24 @@ static int generate_part(void) {
 static void update_lcd_count(int times) {
     char buf[16] = {0};
     sprintf(buf, "%d/15", times);
-    lcd_print(14, 1, buf);
+    lcd_print(1, 14, buf);
 }
 
 static bool play_part(uint32_t time) {
     set_module_time(time);
 
     lcd_clear();
-    lcd_set_cursor_pos(1, 1);
     switch (part) {
         case 0:
-        lcd_print("COLOR");
+        lcd_print(1, 1, "COLOR");
         led_set(IndicatorLED::LED_LCD, LEDColor::LED_COLOR_PINK);
         break;
         case 1:
-        lcd_print("NUMBER");
+        lcd_print(1, 1, "NUMBER");
         led_set(IndicatorLED::LED_LCD, LEDColor::LED_COLOR_BLUE);
         break;
         case 2:
-        lcd_print("SWITCH");
+        lcd_print(1, 1, "SWITCH");
         led_set(IndicatorLED::LED_LCD, LEDColor::LED_COLOR_YELLOW);
         break;
     }

main/steps/step1.h

@@ -2,13 +2,8 @@
 #define STEP_1_H
 
 #include <random>
-#include "../drivers/bottom_half.h"
+#include "../drivers/all.h"
-#include "../drivers/tft.h"
+#include "../helper.h"
-#include "../drivers/leds.h"
-#include "../drivers/wires.h"
-#include "../drivers/speaker.h"
-#include "../drivers/game_timer.h"
-#include "../drivers/char_lcd.h"
 
 void step1(void);
 

main/steps/step2.cpp

@@ -88,6 +88,7 @@ static void new_puzzle(void) {
             // ESP_LOGI(TAG, "Flipping bit %i on display %i", i, display);
         }
     }
+    set_module_sseg_raw(display_map);
 }
 
 void step2(void) {
@@ -98,7 +99,6 @@ void step2(void) {
     int strike_time = 0;
     while(solved_times < NUM_SOLVES) {
         // for every bit in the answer-
-        set_module_sseg_raw(display_map);
         if (get_keypad_pressed(&key)) {
             lcd_clear();
             char c = char_of_keypad_key(key);

main/steps/step2.h

@@ -1,11 +1,7 @@
 #ifndef STEP_2_H
 #define STEP_2_H
 
-#include "../drivers/bottom_half.h"
+#include "../drivers/all.h"
-#include "../drivers/wires.h"
-#include "../drivers/game_timer.h"
-#include "../drivers/leds.h"
-#include "../drivers/speaker.h"
 #include "../helper.h"
 #include <iostream>
 #include <random>

main/steps/step3.cpp

@@ -21,6 +21,8 @@ static const char* TONE_FILES[] = {
     MOUNT_POINT "/high-6.wav",
 };
 
+static const size_t LCD_STRING_SOMETHING = 0;
+static const size_t LCD_STRING_NOTHING = 1;
 static const char* LCD_STRINGS[] = {
     "something",
     "nothing",
@@ -49,13 +51,20 @@ static std::uniform_int_distribution<> lcd_rand_char_dist(0, sizeof(lcd_random_c
 static std::uniform_int_distribution<> has_coconut_dist(0, 2);
 static std::uniform_int_distribution<> coconut_position_dist(0, 13);
 
+const static uint32_t NEOPIXEL_COLOR_IDX_RED = 0;
+const static uint32_t NEOPIXEL_COLOR_IDX_YELLOW = 1;
+const static uint32_t NEOPIXEL_COLOR_IDX_GREEN = 2;
+const static uint32_t NEOPIXEL_COLOR_IDX_BLUE = 3;
+const static uint32_t NEOPIXEL_COLOR_IDX_PINK = 4;
+const static uint32_t NEOPIXEL_COLOR_IDX_WHITE = 5;
+const static uint32_t NEOPIXEL_COLOR_IDX_OFF = 6;
 static uint32_t NEOPIXEL_COLORS[7] = {
     LEDColor::LED_COLOR_RED,
-    LEDColor::LED_COLOR_ORANGE,
     LEDColor::LED_COLOR_YELLOW,
     LEDColor::LED_COLOR_GREEN,
     LEDColor::LED_COLOR_BLUE,
     LEDColor::LED_COLOR_PINK,
+    LEDColor::LED_COLOR_WHITE,
     LEDColor::LED_COLOR_OFF,
 };
 
@@ -64,16 +73,24 @@ static bool three_second();
 static bool six_second();
 
 void step3(void) {
-    StarCodeHandler star_codes[] = {
+    SemaphoreHandle_t continue_sem = xSemaphoreCreateBinary();
-        {
+    if (continue_sem == nullptr) {
-            .code = "*1642",
+        ESP_LOGE(TAG, "could not create semaphore");
-            .display_text = "Starting...",
+        return;
-            .should_exit = true,
+    }
-            .callback = nullptr,
+
-        },
+    StarCodeEntry start_code = {
+        .code = "1642",
+        .display_text = "Starting...",
+        .delay_us = 2'000'000,
+        .callback = nullptr,
+        .triggered_sem = continue_sem,
     };
-    int len = sizeof(star_codes)/sizeof(StarCodeHandler);
+
-    do_star_codes(star_codes, len);
+    add_star_code(start_code);
+    xSemaphoreTake(continue_sem, portMAX_DELAY);
+    rm_star_code(start_code.code);
+    vSemaphoreDelete(continue_sem);
 
     while (times < TIMES_TO_COMPLETE) {
         tone = tone_dist(gen);
@@ -82,7 +99,7 @@ void step3(void) {
 
         play_clip_wav(MOUNT_POINT "/ready.wav", true, false, 3, 0);
         // The high pitched tones need to be scaled down by 3 more
-        play_clip_wav(TONE_FILES[tone], false, false, 2 + (tone/3) * 3, 0);
+        play_clip_wav(TONE_FILES[tone], false, false, 1 + (tone/3) * 4, 0);
         
         bool correct = false;
         switch (tone % 3) {
@@ -221,16 +238,16 @@ static bool one_second() {
     int red_led_count = 0;
     int blue_led_count = 0;
     for (int i = 0; i < LED_COUNT; i++) {
-        if (indicator_led_idxs[i] == 0) {
+        if (indicator_led_idxs[i] == NEOPIXEL_COLOR_IDX_RED) {
             red_led_count++;
-        } else if (indicator_led_idxs[i] == 4) {
+        } else if (indicator_led_idxs[i] == NEOPIXEL_COLOR_IDX_BLUE) {
             blue_led_count++;
         }
     }
 
     uint8_t correct_switches = four_bit_flag(
-        speaker_color == 0 || speaker_color == 1 || speaker_color == 2,
+        speaker_color == NEOPIXEL_COLOR_IDX_RED || speaker_color == NEOPIXEL_COLOR_IDX_YELLOW || speaker_color == NEOPIXEL_COLOR_IDX_PINK,
-        lcd_string_idx == 0 || lcd_string_idx == 1,
+        lcd_string_idx == LCD_STRING_SOMETHING || lcd_string_idx == LCD_STRING_NOTHING,
         was_high,
         !was_high
     );
@@ -280,9 +297,9 @@ static bool three_second() {
     int red_led_count = 0;
     int blue_led_count = 0;
     for (int i = 0; i < LED_COUNT; i++) {
-        if (indicator_led_idxs[i] == 0) {
+        if (indicator_led_idxs[i] == NEOPIXEL_COLOR_IDX_RED) {
             red_led_count++;
-        } else if (indicator_led_idxs[i] == 4) {
+        } else if (indicator_led_idxs[i] == NEOPIXEL_COLOR_IDX_BLUE) {
             blue_led_count++;
         }
     }
@@ -345,7 +362,7 @@ static bool six_second() {
 
     bool was_high = (tone / 3) == 1;
 
-    bool second_switch_correct_state = (indicator_led_idxs[IndicatorLED::LED_S2] == 0) || (indicator_led_idxs[IndicatorLED::LED_S2] == 6);
+    bool second_switch_correct_state = (indicator_led_idxs[IndicatorLED::LED_S2] == NEOPIXEL_COLOR_IDX_RED) || (indicator_led_idxs[IndicatorLED::LED_S2] == NEOPIXEL_COLOR_IDX_OFF);
     second_switch_correct_state = second_switch_correct_state || was_high;
 
     rng_leds();
@@ -354,16 +371,16 @@ static bool six_second() {
     int green_led_count = 0;
     int blue_led_count = 0;
     for (int i = 0; i < LED_COUNT; i++) {
-        if (indicator_led_idxs[i] == 4) {
+        if (indicator_led_idxs[i] == NEOPIXEL_COLOR_IDX_BLUE) {
             blue_led_count++;
-        } else if (indicator_led_idxs[i] == 3) {
+        } else if (indicator_led_idxs[i] == NEOPIXEL_COLOR_IDX_GREEN) {
             green_led_count++;
         }
     }
 
     int pink_led_on_bottom_count = 0;
     for (int i = IndicatorLED::LED_RFID; i < LED_COUNT; i++) {
-        if (indicator_led_idxs[i] == 5) {
+        if (indicator_led_idxs[i] == NEOPIXEL_COLOR_IDX_PINK) {
             pink_led_on_bottom_count++;
         }
     }

main/steps/step3.h

@@ -2,12 +2,7 @@
 #define STEP_3_H
 
 #include <random>
-#include "../drivers/bottom_half.h"
+#include "../drivers/all.h"
-#include "../drivers/wires.h"
-#include "../drivers/speaker.h"
-#include "../drivers/leds.h"
-#include "../drivers/char_lcd.h"
-#include "../drivers/game_timer.h"
 #include "../helper.h"
 
 void step3(void);

main/steps/step4.cpp

@@ -380,16 +380,29 @@ static void fail() {
 }
 
 void step4() {
-    StarCodeHandler star_code = {
+    // TODO: extract to helper function
-        .code = "*3850",
+    SemaphoreHandle_t continue_sem = xSemaphoreCreateBinary();
+    if (continue_sem == nullptr) {
+        ESP_LOGE(TAG, "could not create semaphore");
+    }
+
+    StarCodeEntry start_code = {
+        .code = "3850",
         .display_text = "Starting...",
-        .should_exit = true,
+        .delay_us = 2'000'000,
         .callback = nullptr,
+        .triggered_sem = continue_sem,
     };
-    do_star_codes(&star_code, 1);
+
+    add_star_code(start_code);
+    xSemaphoreTake(continue_sem, portMAX_DELAY);
+    rm_star_code(start_code.code);
+    vSemaphoreDelete(continue_sem);
+
     init_screen();
 
     while (!play_game(4*60*1000, 2)) fail();
+    // TODO: create constants for common assets, and put them in a folder.
     play_clip_wav(MOUNT_POINT "/partdone.wav", true, false, 0, 0);
     complete();
     while (!play_game(4*60*1000, 4)) fail();

main/steps/step4.h

@@ -2,13 +2,9 @@
 #define STEP_4_H
 
 #include <random>
-#include "../drivers/tft.h"
+#include "../drivers/all.h"
-#include "../drivers/speaker.h"
-#include "../drivers/bottom_half.h"
-#include "../drivers/game_timer.h"
-#include "../drivers/wires.h"
-#include "../drivers/char_lcd.h"
 #include "../helper.h"
+#include "esp_log.h"
 
 #define TETRIS_USE_FLASH_IMG
 #define TETRIS_USE_FLASH_BG_IMG

main/steps/step5.cpp

@@ -179,16 +179,23 @@ bool submit_6(bool* buttons_cycling, bool button_turned_on, int led_off) {
 }
 
 void step5(void) {
-    StarCodeHandler star_codes[] = {
+    SemaphoreHandle_t continue_sem = xSemaphoreCreateBinary();
-        {
+    if (continue_sem == nullptr) {
-            .code = "*2648",
+        ESP_LOGE(TAG, "could not create semaphore");
-            .display_text = "Starting...",
+    }
-            .should_exit = true,
+
-            .callback = nullptr,
+    StarCodeEntry start_code = {
-        },
+        .code = "2648",
+        .display_text = "Starting...",
+        .delay_us = 2'000'000,
+        .callback = nullptr,
+        .triggered_sem = continue_sem,
     };
-    int len = sizeof(star_codes)/sizeof(StarCodeHandler);
+
-    do_star_codes(star_codes, len);
+    add_star_code(start_code);
+    xSemaphoreTake(continue_sem, portMAX_DELAY);
+    rm_star_code(start_code.code);
+    vSemaphoreDelete(continue_sem);
 
     std::vector<int> all_leds;
 
@@ -222,15 +229,13 @@ void step5(void) {
     clean_bomb();
     int solved_puzzles = 0;
     while (solved_puzzles < TIMES_TO_SOLVE) {
-        lcd_set_cursor_pos(1, 1);
         bool solved_correctly = false;
 
         int puzzle = puzzle_dist(gen);
-        // int puzzle = 2;
 
         switch (puzzle) {
             case 0: {
-                lcd_print("Clear");
+                lcd_print(1, 1, "Clear");
                 set_module_time(TIME_CLEAR);
                 start_module_timer();
 
@@ -265,7 +270,7 @@ void step5(void) {
                 break;
             }
             case 1: {
-                lcd_print("Blank");
+                lcd_print(1, 1, "Blank");
                 set_module_time(TIME_BLANK);
                 start_module_timer();
                 
@@ -379,7 +384,7 @@ void step5(void) {
                 break;
             }
             case 3: {
-                lcd_print("Nothing");
+                lcd_print(1, 1, "Nothing");
                 set_module_time(TIME_NOTHING);
                 start_module_timer();
 
@@ -438,7 +443,7 @@ void step5(void) {
                 break;
             }
             case 4: {
-                lcd_print("Blink");
+                lcd_print(1, 1, "Blink");
                 set_module_time(TIME_BLINK);
                 start_module_timer();
 
@@ -502,7 +507,7 @@ void step5(void) {
                 break;
             }
             case 5: {
-                lcd_print("Ummm");
+                lcd_print(1, 1, "Ummm");
                 set_module_time(TIME_UMMM);
                 start_module_timer();
 
@@ -558,7 +563,7 @@ void step5(void) {
                 break;
             }
             case 6: {
-                lcd_print("Plank");
+                lcd_print(1, 1, "Plank");
                 set_module_time(TIME_PLANK);
                 start_module_timer();
 
@@ -651,7 +656,7 @@ void step5(void) {
                 break;
             }
             case 7: {
-                lcd_print("What");
+                lcd_print(1, 1, "What");
                 set_module_time(TIME_WHAT);
                 start_module_timer();
 
@@ -724,7 +729,7 @@ void step5(void) {
                 }
 
                 // display expression
-                lcd_print(1, 2, display_expression.c_str());
+                lcd_print(2, 1, display_expression.c_str());
 
                 // set LEDs
                 const uint32_t COLORS[] = {
@@ -785,8 +790,8 @@ void step5(void) {
 
                         lcd_clear();
                         lcd_print(1, 1, "What");
-                        lcd_print(1, 2, display_expression.c_str());
+                        lcd_print(2, 1, display_expression.c_str());
-                        lcd_print(1, 3, entered_string.c_str());
+                        lcd_print(3, 1, entered_string.c_str());
                     }
                     if (get_module_time() <= 0) {
                         strike("Ran out of time!");
@@ -799,7 +804,7 @@ void step5(void) {
                 break;
             }
             case 8: {
-                lcd_print("Plink");
+                lcd_print(1, 1, "Plink");
                 set_module_time(TIME_PLINK);
                 start_module_timer();
 
@@ -844,7 +849,7 @@ void step5(void) {
 
                     // ESP_LOGI(TAG, "color string: %s", color_string.c_str());
 
-                    lcd_print(1, 2, color_string.c_str());
+                    lcd_print(2, 1, color_string.c_str());
 
                     std::string entered_string;
 
@@ -875,8 +880,8 @@ void step5(void) {
 
                             lcd_clear();
                             lcd_print(1, 1, "Plink");
-                            lcd_print(1, 2, color_string.c_str());
+                            lcd_print(2, 1, color_string.c_str());
-                            lcd_print(1, 3, entered_string.c_str());
+                            lcd_print(3, 1, entered_string.c_str());
                         }
                         if (get_module_time() <= 0) {
                             strike("Ran out of time!");
@@ -900,13 +905,13 @@ void step5(void) {
         stop_module_timer();
         if (solved_correctly) {
             solved_puzzles++;
-            play_clip_wav(MOUNT_POINT "/correct.wav", true, false, 3, 0);
+            play_clip_wav(MOUNT_POINT "/partdone.wav", true, false, 0, 0);
             vTaskDelay(pdMS_TO_TICKS(500));
             solved_correctly = false;
         } else {
             vTaskDelay(pdMS_TO_TICKS(3000));
         }
-        clear_all_pressed_released();
+        play_clip_wav(MOUNT_POINT "/stepdone.wav", true, false, 1, 0);
         clean_bomb();
     }
 }

main/steps/step5.h

@@ -1,11 +1,7 @@
 #ifndef STEP_5_H
 #define STEP_5_H
 
-#include "../drivers/bottom_half.h"
+#include "../drivers/all.h"
-#include "../drivers/game_timer.h"
-#include "../drivers/char_lcd.h"
-#include "../drivers/leds.h"
-#include "../drivers/wires.h"
 #include "../helper.h"
 #include <random>
 #include <iostream>

main/steps/step6.h

@@ -2,10 +2,8 @@
 #define STEP_6_H
 
 #include "wires_puzzle.h"
-#include "drivers/wires.h"
+#include "../drivers/all.h"
-#include "drivers/bottom_half.h"
+#include "../helper.h"
-#include "drivers/sd.h"
-#include "drivers/speaker.h"
 
 void step6(void);
 

partitions.csv

@@ -0,0 +1,8 @@
+# ESP-IDF Partition Table
+# Name, Type, SubType, Offset, Size, Flags
+nvs,data,nvs,0x9000,0x6000,,
+phy_init,data,phy,0xf000,0x1000,,
+ota,data,ota,0x10000,0x2000,,
+factory,app,factory,0x20000,2M,,
+ota0,app,ota_0,0x220000,2M,,
+ota1,app,ota_1,0x420000,2M,,

sdkconfig

@@ -527,11 +527,11 @@ CONFIG_ESPTOOLPY_MONITOR_BAUD=115200
 # Partition Table
 #
 # CONFIG_PARTITION_TABLE_SINGLE_APP is not set
-CONFIG_PARTITION_TABLE_SINGLE_APP_LARGE=y
+# CONFIG_PARTITION_TABLE_SINGLE_APP_LARGE is not set
 # CONFIG_PARTITION_TABLE_TWO_OTA is not set
-# CONFIG_PARTITION_TABLE_CUSTOM is not set
+CONFIG_PARTITION_TABLE_CUSTOM=y
 CONFIG_PARTITION_TABLE_CUSTOM_FILENAME="partitions.csv"
-CONFIG_PARTITION_TABLE_FILENAME="partitions_singleapp_large.csv"
+CONFIG_PARTITION_TABLE_FILENAME="partitions.csv"
 CONFIG_PARTITION_TABLE_OFFSET=0x8000
 CONFIG_PARTITION_TABLE_MD5=y
 # end of Partition Table
@@ -539,7 +539,7 @@ CONFIG_PARTITION_TABLE_MD5=y
 #
 # BLK_BOX Config
 #
-CONFIG_USE_NEW_DISPLAY=y
+# CONFIG_USE_NEW_DISPLAY is not set
 # end of BLK_BOX Config
 
 #
@@ -920,8 +920,8 @@ CONFIG_ESP32S3_UNIVERSAL_MAC_ADDRESSES=4
 #
 # Sleep Config
 #
-# CONFIG_ESP_SLEEP_POWER_DOWN_FLASH is not set
 CONFIG_ESP_SLEEP_FLASH_LEAKAGE_WORKAROUND=y
+CONFIG_ESP_SLEEP_PSRAM_LEAKAGE_WORKAROUND=y
 CONFIG_ESP_SLEEP_MSPI_NEED_ALL_IO_PU=y
 CONFIG_ESP_SLEEP_RTC_BUS_ISO_WORKAROUND=y
 CONFIG_ESP_SLEEP_GPIO_RESET_WORKAROUND=y
@@ -1030,7 +1030,39 @@ CONFIG_PM_RESTORE_CACHE_TAGMEM_AFTER_LIGHT_SLEEP=y
 #
 # ESP PSRAM
 #
-# CONFIG_SPIRAM is not set
+CONFIG_SPIRAM=y
+
+#
+# SPI RAM config
+#
+CONFIG_SPIRAM_MODE_QUAD=y
+# CONFIG_SPIRAM_MODE_OCT is not set
+CONFIG_SPIRAM_TYPE_AUTO=y
+# CONFIG_SPIRAM_TYPE_ESPPSRAM16 is not set
+# CONFIG_SPIRAM_TYPE_ESPPSRAM32 is not set
+# CONFIG_SPIRAM_TYPE_ESPPSRAM64 is not set
+CONFIG_SPIRAM_ALLOW_STACK_EXTERNAL_MEMORY=y
+CONFIG_SPIRAM_CLK_IO=30
+CONFIG_SPIRAM_CS_IO=26
+# CONFIG_SPIRAM_XIP_FROM_PSRAM is not set
+# CONFIG_SPIRAM_FETCH_INSTRUCTIONS is not set
+# CONFIG_SPIRAM_RODATA is not set
+# CONFIG_SPIRAM_SPEED_120M is not set
+# CONFIG_SPIRAM_SPEED_80M is not set
+CONFIG_SPIRAM_SPEED_40M=y
+CONFIG_SPIRAM_SPEED=40
+CONFIG_SPIRAM_BOOT_INIT=y
+# CONFIG_SPIRAM_IGNORE_NOTFOUND is not set
+# CONFIG_SPIRAM_USE_MEMMAP is not set
+# CONFIG_SPIRAM_USE_CAPS_ALLOC is not set
+CONFIG_SPIRAM_USE_MALLOC=y
+CONFIG_SPIRAM_MEMTEST=y
+CONFIG_SPIRAM_MALLOC_ALWAYSINTERNAL=16384
+# CONFIG_SPIRAM_TRY_ALLOCATE_WIFI_LWIP is not set
+CONFIG_SPIRAM_MALLOC_RESERVE_INTERNAL=32768
+# CONFIG_SPIRAM_ALLOW_BSS_SEG_EXTERNAL_MEMORY is not set
+# CONFIG_SPIRAM_ALLOW_NOINIT_SEG_EXTERNAL_MEMORY is not set
+# end of SPI RAM config
 # end of ESP PSRAM
 
 #
@@ -1184,9 +1216,9 @@ CONFIG_ESP_WIFI_ENABLED=y
 CONFIG_ESP_WIFI_STATIC_RX_BUFFER_NUM=10
 CONFIG_ESP_WIFI_DYNAMIC_RX_BUFFER_NUM=32
 CONFIG_ESP_WIFI_STATIC_TX_BUFFER=y
-# CONFIG_ESP_WIFI_DYNAMIC_TX_BUFFER is not set
 CONFIG_ESP_WIFI_TX_BUFFER_TYPE=0
 CONFIG_ESP_WIFI_STATIC_TX_BUFFER_NUM=16
+CONFIG_ESP_WIFI_CACHE_TX_BUFFER_NUM=32
 CONFIG_ESP_WIFI_STATIC_RX_MGMT_BUFFER=y
 # CONFIG_ESP_WIFI_DYNAMIC_RX_MGMT_BUFFER is not set
 CONFIG_ESP_WIFI_DYNAMIC_RX_MGMT_BUF=0
@@ -1196,6 +1228,7 @@ CONFIG_ESP_WIFI_AMPDU_TX_ENABLED=y
 CONFIG_ESP_WIFI_TX_BA_WIN=6
 CONFIG_ESP_WIFI_AMPDU_RX_ENABLED=y
 CONFIG_ESP_WIFI_RX_BA_WIN=6
+# CONFIG_ESP_WIFI_AMSDU_TX_ENABLED is not set
 CONFIG_ESP_WIFI_NVS_ENABLED=y
 CONFIG_ESP_WIFI_TASK_PINNED_TO_CORE_0=y
 # CONFIG_ESP_WIFI_TASK_PINNED_TO_CORE_1 is not set
@@ -1285,6 +1318,7 @@ CONFIG_FATFS_CODEPAGE=437
 CONFIG_FATFS_FS_LOCK=0
 CONFIG_FATFS_TIMEOUT_MS=10000
 CONFIG_FATFS_PER_FILE_CACHE=y
+CONFIG_FATFS_ALLOC_PREFER_EXTRAM=y
 # CONFIG_FATFS_USE_FASTSEEK is not set
 CONFIG_FATFS_VFS_FSTAT_BLKSIZE=0
 # CONFIG_FATFS_IMMEDIATE_FSYNC is not set
@@ -1589,6 +1623,7 @@ CONFIG_LWIP_HOOK_IP6_INPUT_NONE=y
 # mbedTLS
 #
 CONFIG_MBEDTLS_INTERNAL_MEM_ALLOC=y
+# CONFIG_MBEDTLS_EXTERNAL_MEM_ALLOC is not set
 # CONFIG_MBEDTLS_DEFAULT_MEM_ALLOC is not set
 # CONFIG_MBEDTLS_CUSTOM_MEM_ALLOC is not set
 CONFIG_MBEDTLS_ASYMMETRIC_CONTENT_LEN=y
@@ -1751,6 +1786,8 @@ CONFIG_NEWLIB_TIME_SYSCALL_USE_RTC_HRT=y
 # CONFIG_NEWLIB_TIME_SYSCALL_USE_NONE is not set
 # end of Newlib
 
+CONFIG_STDATOMIC_S32C1I_SPIRAM_WORKAROUND=y
+
 #
 # NVS
 #
@@ -2377,7 +2414,6 @@ CONFIG_POST_EVENTS_FROM_IRAM_ISR=y
 CONFIG_GDBSTUB_SUPPORT_TASKS=y
 CONFIG_GDBSTUB_MAX_TASKS=32
 # CONFIG_OTA_ALLOW_HTTP is not set
-# CONFIG_ESP_SYSTEM_PD_FLASH is not set
 CONFIG_ESP32S3_DEEP_SLEEP_WAKEUP_DELAY=2000
 CONFIG_ESP_SLEEP_DEEP_SLEEP_WAKEUP_DELAY=2000
 CONFIG_ESP32S3_RTC_CLK_SRC_INT_RC=y
@@ -2393,7 +2429,9 @@ CONFIG_ESP32_PHY_MAX_TX_POWER=20
 # CONFIG_ESP32_REDUCE_PHY_TX_POWER is not set
 CONFIG_ESP_SYSTEM_PM_POWER_DOWN_CPU=y
 CONFIG_PM_POWER_DOWN_TAGMEM_IN_LIGHT_SLEEP=y
-# CONFIG_ESP32S3_SPIRAM_SUPPORT is not set
+CONFIG_ESP32S3_SPIRAM_SUPPORT=y
+CONFIG_DEFAULT_PSRAM_CLK_IO=30
+CONFIG_DEFAULT_PSRAM_CS_IO=26
 # CONFIG_ESP32S3_DEFAULT_CPU_FREQ_80 is not set
 CONFIG_ESP32S3_DEFAULT_CPU_FREQ_160=y
 # CONFIG_ESP32S3_DEFAULT_CPU_FREQ_240 is not set
@@ -2444,9 +2482,9 @@ CONFIG_ESP32_WIFI_ENABLED=y
 CONFIG_ESP32_WIFI_STATIC_RX_BUFFER_NUM=10
 CONFIG_ESP32_WIFI_DYNAMIC_RX_BUFFER_NUM=32
 CONFIG_ESP32_WIFI_STATIC_TX_BUFFER=y
-# CONFIG_ESP32_WIFI_DYNAMIC_TX_BUFFER is not set
 CONFIG_ESP32_WIFI_TX_BUFFER_TYPE=0
 CONFIG_ESP32_WIFI_STATIC_TX_BUFFER_NUM=16
+CONFIG_ESP32_WIFI_CACHE_TX_BUFFER_NUM=32
 # CONFIG_ESP32_WIFI_CSI_ENABLED is not set
 CONFIG_ESP32_WIFI_AMPDU_TX_ENABLED=y
 CONFIG_ESP32_WIFI_TX_BA_WIN=6
@@ -2454,6 +2492,7 @@ CONFIG_ESP32_WIFI_AMPDU_RX_ENABLED=y
 CONFIG_ESP32_WIFI_AMPDU_RX_ENABLED=y
 CONFIG_ESP32_WIFI_RX_BA_WIN=6
 CONFIG_ESP32_WIFI_RX_BA_WIN=6
+# CONFIG_ESP32_WIFI_AMSDU_TX_ENABLED is not set
 CONFIG_ESP32_WIFI_NVS_ENABLED=y
 CONFIG_ESP32_WIFI_TASK_PINNED_TO_CORE_0=y
 # CONFIG_ESP32_WIFI_TASK_PINNED_TO_CORE_1 is not set