Add FindMy Flipper to system apps

applications/system/findmy/application.fam

@@ -0,0 +1,14 @@
+App(
+    appid="findmy",
+    name="FindMy Flipper",
+    apptype=FlipperAppType.EXTERNAL,
+    entry_point="findmy_main",
+    requires=["gui"],
+    stack_size=1 * 1024,
+    order=35,
+    fap_icon="location_icon.png",
+    fap_category="Bluetooth",
+    fap_author="@MatthewKuKanich",
+    fap_version="1.0",
+    fap_description="BLE FindMy Location Beacon",
+)

applications/system/findmy/findmy.c

@@ -0,0 +1,164 @@
+#include "findmy_i.h"
+
+static bool findmy_custom_event_callback(void* context, uint32_t event) {
+    furi_assert(context);
+    FindMy* app = context;
+    return scene_manager_handle_custom_event(app->scene_manager, event);
+}
+
+static bool findmy_back_event_callback(void* context) {
+    furi_assert(context);
+    FindMy* app = context;
+    return scene_manager_handle_back_event(app->scene_manager);
+}
+
+static FindMy* findmy_app_alloc() {
+    FindMy* app = malloc(sizeof(FindMy));
+
+    app->gui = furi_record_open(RECORD_GUI);
+
+    app->view_dispatcher = view_dispatcher_alloc();
+    view_dispatcher_enable_queue(app->view_dispatcher);
+
+    app->scene_manager = scene_manager_alloc(&findmy_scene_handlers, app);
+
+    view_dispatcher_set_event_callback_context(app->view_dispatcher, app);
+    view_dispatcher_set_custom_event_callback(app->view_dispatcher, findmy_custom_event_callback);
+    view_dispatcher_set_navigation_event_callback(
+        app->view_dispatcher, findmy_back_event_callback);
+
+    app->findmy_main = findmy_main_alloc(app);
+    view_dispatcher_add_view(
+        app->view_dispatcher, FindMyViewMain, findmy_main_get_view(app->findmy_main));
+
+    app->byte_input = byte_input_alloc();
+    view_dispatcher_add_view(
+        app->view_dispatcher, FindMyViewByteInput, byte_input_get_view(app->byte_input));
+
+    app->var_item_list = variable_item_list_alloc();
+    view_dispatcher_add_view(
+        app->view_dispatcher,
+        FindMyViewVarItemList,
+        variable_item_list_get_view(app->var_item_list));
+
+    view_dispatcher_attach_to_gui(app->view_dispatcher, app->gui, ViewDispatcherTypeFullscreen);
+
+    app->beacon_active = false;
+    findmy_main_update_active(app->findmy_main, app->beacon_active);
+    app->broadcast_interval = 5;
+    findmy_main_update_interval(app->findmy_main, app->broadcast_interval);
+    app->transmit_power = 6;
+    app->apple = true;
+    findmy_main_update_apple(app->findmy_main, app->apple);
+
+    return app;
+}
+
+static void findmy_app_free(FindMy* app) {
+    furi_assert(app);
+
+    view_dispatcher_remove_view(app->view_dispatcher, FindMyViewVarItemList);
+    variable_item_list_free(app->var_item_list);
+
+    view_dispatcher_remove_view(app->view_dispatcher, FindMyViewByteInput);
+    byte_input_free(app->byte_input);
+
+    view_dispatcher_remove_view(app->view_dispatcher, FindMyViewMain);
+    findmy_main_free(app->findmy_main);
+
+    view_dispatcher_free(app->view_dispatcher);
+    scene_manager_free(app->scene_manager);
+
+    furi_record_close(RECORD_GUI);
+
+    free(app);
+}
+
+static void findmy_start(FindMy* app) {
+    furi_hal_bt_extra_beacon_stop(); // Stop any running beacon
+
+    app->config.min_adv_interval_ms = app->broadcast_interval * 1000; // Converting s to ms
+    app->config.max_adv_interval_ms = (app->broadcast_interval * 1000) + 150;
+    app->config.adv_channel_map = GapAdvChannelMapAll;
+    app->config.adv_power_level = GapAdvPowerLevel_0dBm + app->transmit_power;
+    app->config.address_type = GapAddressTypePublic;
+
+    uint8_t mac[EXTRA_BEACON_MAC_ADDR_SIZE] = {0x4D, 0x61, 0x74, 0x4B, 0x75, 0x4B};
+    furi_hal_bt_reverse_mac_addr(mac);
+    memcpy(&app->config.address, mac, sizeof(app->config.address));
+    furi_check(furi_hal_bt_extra_beacon_set_config(&app->config));
+
+    uint8_t data[EXTRA_BEACON_MAX_DATA_SIZE];
+    uint8_t* it = data;
+
+    // For Apple AirTags
+    *it++ = 0x1E; // Length
+    *it++ = 0xFF; // Manufacturer Specific Data
+    *it++ = 0x4C; // Company ID (Apple, Inc.)
+    *it++ = 0x00; // State
+    *it++ = 0x12; // Data - Public Key without the MAC address
+    *it++ = 0x81; // ...
+    *it++ = 0xB9; // ...
+    *it++ = 0x02; // First 2 bits are the version, the rest is the battery level
+    *it++ = 0x7E; // Hint (0x00)
+
+    furi_check(furi_hal_bt_extra_beacon_set_data(data, it - data));
+}
+
+int32_t findmy_main(void* p) {
+    UNUSED(p);
+    FindMy* app = findmy_app_alloc();
+
+    findmy_start(app);
+
+    scene_manager_next_scene(app->scene_manager, FindMySceneMain);
+
+    view_dispatcher_run(app->view_dispatcher);
+
+    findmy_app_free(app);
+    return 0;
+}
+
+void findmy_change_broadcast_interval(FindMy* app, uint8_t value) {
+    if(value > 10 || value < 1) {
+        return;
+    }
+    app->broadcast_interval = value;
+    findmy_main_update_interval(app->findmy_main, app->broadcast_interval);
+    if(app->beacon_active) {
+        // Always check if beacon is active before changing config
+        furi_check(furi_hal_bt_extra_beacon_stop());
+    }
+    app->config.min_adv_interval_ms = app->broadcast_interval * 1000;
+    app->config.max_adv_interval_ms = app->config.min_adv_interval_ms + 150;
+    furi_check(furi_hal_bt_extra_beacon_set_config(&app->config));
+    if(app->beacon_active) {
+        furi_check(furi_hal_bt_extra_beacon_start());
+    }
+}
+
+void findmy_change_transmit_power(FindMy* app, uint8_t value) {
+    if(value > 6) {
+        return;
+    }
+    app->transmit_power = value;
+    if(app->beacon_active) {
+        furi_check(furi_hal_bt_extra_beacon_stop());
+    }
+    app->config.adv_power_level = GapAdvPowerLevel_0dBm + app->transmit_power;
+    furi_check(furi_hal_bt_extra_beacon_set_config(&app->config));
+    if(app->beacon_active) {
+        furi_check(furi_hal_bt_extra_beacon_start());
+    }
+}
+
+void findmy_toggle_beacon(FindMy* app) {
+    app->beacon_active = !app->beacon_active;
+    findmy_main_update_active(app->findmy_main, app->beacon_active);
+    findmy_main_update_apple(app->findmy_main, app->apple);
+    if(app->beacon_active) {
+        furi_hal_bt_extra_beacon_start();
+    } else {
+        furi_hal_bt_extra_beacon_stop();
+    }
+}

applications/system/findmy/findmy.h

@@ -0,0 +1,3 @@
+#pragma once
+
+typedef struct FindMy FindMy;

applications/system/findmy/findmy_i.h

@@ -0,0 +1,42 @@
+#pragma once
+
+#include "findmy.h"
+#include <furi_hal_bt.h>
+#include <extra_beacon.h>
+#include <assets_icons.h>
+#include <gui/gui.h>
+#include <gui/scene_manager.h>
+#include <gui/view_dispatcher.h>
+#include "views/findmy_main.h"
+#include <gui/modules/byte_input.h>
+#include <gui/modules/variable_item_list.h>
+#include "scenes/findmy_scene.h"
+
+struct FindMy {
+    Gui* gui;
+    SceneManager* scene_manager;
+    ViewDispatcher* view_dispatcher;
+
+    FindMyMain* findmy_main;
+    ByteInput* byte_input;
+    VariableItemList* var_item_list;
+
+    uint8_t mac_buf[EXTRA_BEACON_MAC_ADDR_SIZE];
+    uint8_t packet_buf[EXTRA_BEACON_MAX_DATA_SIZE];
+
+    GapExtraBeaconConfig config;
+    bool apple;
+    bool beacon_active;
+    uint8_t broadcast_interval;
+    uint8_t transmit_power;
+};
+
+typedef enum {
+    FindMyViewMain,
+    FindMyViewByteInput,
+    FindMyViewVarItemList,
+} FindMyView;
+
+void findmy_change_broadcast_interval(FindMy* app, uint8_t value);
+void findmy_change_transmit_power(FindMy* app, uint8_t value);
+void findmy_toggle_beacon(FindMy* app);

applications/system/findmy/scenes/findmy_scene.c

@@ -0,0 +1,31 @@
+#include "findmy_scene.h"
+#include "findmy.h"
+
+// Generate scene on_enter handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_enter,
+void (*const findmy_on_enter_handlers[])(void*) = {
+#include "findmy_scenes.h"
+};
+#undef ADD_SCENE
+
+// Generate scene on_event handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_event,
+bool (*const findmy_on_event_handlers[])(void* context, SceneManagerEvent event) = {
+#include "findmy_scenes.h"
+};
+#undef ADD_SCENE
+
+// Generate scene on_exit handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_exit,
+void (*const findmy_on_exit_handlers[])(void* context) = {
+#include "findmy_scenes.h"
+};
+#undef ADD_SCENE
+
+// Initialize scene handlers configuration structure
+const SceneManagerHandlers findmy_scene_handlers = {
+    .on_enter_handlers = findmy_on_enter_handlers,
+    .on_event_handlers = findmy_on_event_handlers,
+    .on_exit_handlers = findmy_on_exit_handlers,
+    .scene_num = FindMySceneNum,
+};

applications/system/findmy/scenes/findmy_scene.h

@@ -0,0 +1,30 @@
+#pragma once
+
+#include <gui/scene_manager.h>
+#include "findmy.h"
+
+// Generate scene id and total number
+#define ADD_SCENE(prefix, name, id) FindMyScene##id,
+typedef enum {
+#include "findmy_scenes.h"
+    FindMySceneNum,
+} FindMyScene;
+#undef ADD_SCENE
+
+extern const SceneManagerHandlers findmy_scene_handlers;
+
+// Generate scene on_enter handlers declaration
+#define ADD_SCENE(prefix, name, id) void prefix##_scene_##name##_on_enter(void*);
+#include "findmy_scenes.h"
+#undef ADD_SCENE
+
+// Generate scene on_event handlers declaration
+#define ADD_SCENE(prefix, name, id) \
+    bool prefix##_scene_##name##_on_event(void* context, SceneManagerEvent event);
+#include "findmy_scenes.h"
+#undef ADD_SCENE
+
+// Generate scene on_exit handlers declaration
+#define ADD_SCENE(prefix, name, id) void prefix##_scene_##name##_on_exit(void* context);
+#include "findmy_scenes.h"
+#undef ADD_SCENE

applications/system/findmy/scenes/findmy_scene_config.c

@@ -0,0 +1,98 @@
+#include "../findmy_i.h"
+
+enum VarItemListIndex {
+    VarItemListIndexBroadcastInterval,
+    VarItemListIndexTransmitPower,
+    VarItemListIndexRegisterTag,
+    VarItemListIndexAbout,
+};
+
+void findmy_scene_config_broadcast_interval_changed(VariableItem* item) {
+    FindMy* app = variable_item_get_context(item);
+    uint8_t index = variable_item_get_current_value_index(item);
+    findmy_change_broadcast_interval(app, index + 1);
+    char str[5];
+    snprintf(str, sizeof(str), "%ds", app->broadcast_interval);
+    variable_item_set_current_value_text(item, str);
+    variable_item_set_current_value_index(item, app->broadcast_interval - 1);
+}
+
+void findmy_scene_config_transmit_power_changed(VariableItem* item) {
+    FindMy* app = variable_item_get_context(item);
+    uint8_t index = variable_item_get_current_value_index(item);
+    findmy_change_transmit_power(app, index);
+    char str[7];
+    snprintf(str, sizeof(str), "%ddBm", app->transmit_power);
+    variable_item_set_current_value_text(item, str);
+    variable_item_set_current_value_index(item, app->transmit_power);
+}
+
+void findmy_scene_config_callback(void* context, uint32_t index) {
+    furi_assert(context);
+    FindMy* app = context;
+    view_dispatcher_send_custom_event(app->view_dispatcher, index);
+}
+
+void findmy_scene_config_on_enter(void* context) {
+    FindMy* app = context;
+    VariableItemList* var_item_list = app->var_item_list;
+    VariableItem* item;
+
+    item = variable_item_list_add(
+        var_item_list,
+        "Broadcast Interval",
+        10,
+        findmy_scene_config_broadcast_interval_changed,
+        app);
+    // Broadcast Interval is 1-10, so use 0-9 and offset indexes by 1
+    variable_item_set_current_value_index(item, app->broadcast_interval - 1);
+    char broadcast_interval_s[5];
+    snprintf(broadcast_interval_s, sizeof(broadcast_interval_s), "%ds", app->broadcast_interval);
+    variable_item_set_current_value_text(item, broadcast_interval_s);
+
+    item = variable_item_list_add(
+        var_item_list, "Transmit Power", 7, findmy_scene_config_transmit_power_changed, app);
+    variable_item_set_current_value_index(item, app->transmit_power);
+    char transmit_power_s[7];
+    snprintf(transmit_power_s, sizeof(transmit_power_s), "%ddBm", app->transmit_power);
+    variable_item_set_current_value_text(item, transmit_power_s);
+
+    item = variable_item_list_add(var_item_list, "Register Tag", 0, NULL, NULL);
+    item = variable_item_list_add(var_item_list, "Matthew KuKanich, Thanks to Chapoly1305, WillyJL, OpenHaystack, Testers", 1, NULL, NULL);
+    variable_item_set_current_value_text(item, "Credits");
+
+    variable_item_list_set_enter_callback(var_item_list, findmy_scene_config_callback, app);
+
+    variable_item_list_set_selected_item(
+        var_item_list, scene_manager_get_scene_state(app->scene_manager, FindMySceneConfig));
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, FindMyViewVarItemList);
+}
+
+bool findmy_scene_config_on_event(void* context, SceneManagerEvent event) {
+    FindMy* app = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        scene_manager_set_scene_state(app->scene_manager, FindMySceneConfig, event.event);
+        consumed = true;
+        switch(event.event) {
+        case VarItemListIndexRegisterTag:
+            scene_manager_next_scene(app->scene_manager, FindMySceneConfigMac);
+            break;
+        case VarItemListIndexAbout:
+            break;
+        default:
+            break;
+        }
+    }
+
+    return consumed;
+}
+
+void findmy_scene_config_on_exit(void* context) {
+    FindMy* app = context;
+    VariableItemList* var_item_list = app->var_item_list;
+
+    variable_item_list_reset(var_item_list);
+}