Add EspNowBridge + updates for Audio System (#36)

2026-07-20 05:52:39 +10:00
parent 8721a653e7
commit 25b966a340
15 changed files with 1019 additions and 100 deletions
@@ -0,0 +1,108 @@
+#pragma once
+
+#include <TactilityCpp/App.h>
+
+#include <atomic>
+#include <optional>
+#include <string>
+
+#include <freertos/FreeRTOS.h>
+#include <freertos/task.h>
+
+#include <lvgl.h>
+
+#include <tactility/drivers/wifi.h>
+
+/** RAII guard: pauses WifiService's background auto-connect scan for the guard's lifetime. See
+ *  tactility/wifi_auto_scan.h - belt-and-suspenders measure, not sufficient on its own (see the
+ *  REBOOT comment in EspNowBridge.cpp). */
+class AutoScanPauseGuard {
+public:
+    AutoScanPauseGuard();
+    ~AutoScanPauseGuard();
+    AutoScanPauseGuard(const AutoScanPauseGuard&) = delete;
+    AutoScanPauseGuard& operator=(const AutoScanPauseGuard&) = delete;
+};
+
+class EspNowBridge final : public App {
+public:
+    EspNowBridge() = default;
+    EspNowBridge(const EspNowBridge&) = delete;
+    EspNowBridge& operator=(const EspNowBridge&) = delete;
+
+    void onCreate(AppHandle app) override;
+    void onDestroy(AppHandle app) override;
+    void onShow(AppHandle app, lv_obj_t* parent) override;
+    void onHide(AppHandle app) override;
+    void onResult(AppHandle app, void* data, AppLaunchId launchId, AppResult result, BundleHandle resultData) override;
+
+    // Public so the free-function dispatchToUi() work callbacks in EspNowBridge.cpp (which run
+    // outside any member-function's lexical scope, unlike the inline lambdas in performUpdate())
+    // can call them.
+    void setStatus(const std::string& text);
+    void setProgress(int percent);
+
+private:
+    AppHandle appHandle_ = nullptr;
+    AppLaunchId pickFileLaunchId_ = 0;
+    std::string pendingUpdateFilePath_;
+    Device* wifiDevice_ = nullptr;
+
+    // Resolved once in onShow() via wifi_get_firmware_ops() - null on a WiFi device with no
+    // updatable co-processor (e.g. a native, non-hosted chip). All OTA/version-query calls go
+    // through this generic interface, not any esp_hosted-specific API directly.
+    const FirmwareOps* firmwareOps_ = nullptr;
+    void* firmwareCtx_ = nullptr;
+
+    // Set once in onShow(), false once onHide() tears the widget tree down - checked (via
+    // dispatchToUi(), below) before touching any lv_obj_t*, since the OTA worker task and the
+    // WiFi-event callback can both outlive a hide/app-switch.
+    std::atomic<bool> isShown_{false};
+
+    // Only one EspNowBridge instance is ever live at a time (app loader owns a single instance
+    // per running app), so a single static "is this instance still current" pointer, guarded by
+    // an atomic, substitutes for the internal app's shared_ptr-based lifetime guard - the OTA
+    // worker task and dispatchToUi()'s lv_async_call closures check liveInstance_ == this before
+    // touching any member, instead of holding a shared_ptr to keep `this` alive.
+    static std::atomic<EspNowBridge*> liveInstance_;
+
+    TaskHandle_t updateTask_ = nullptr;
+
+    // Number of background tasks (updateTaskEntry, waitForTransportTaskEntry) currently running
+    // against this instance's members. onDestroy() must wait for this to hit 0 before returning -
+    // the app framework frees this instance shortly after onDestroy() returns (see Loader.cpp),
+    // so any task still touching `this` past that point is a use-after-free.
+    std::atomic<int> outstandingTasks_{0};
+    SemaphoreHandle_t taskDoneSemaphore_ = nullptr;
+
+    // Outlives performUpdate() deliberately, so auto-scan stays paused across the async gap
+    // between performUpdate() returning and the automatic restart - see performUpdate().
+    std::optional<AutoScanPauseGuard> heldAutoScanPauseGuard_;
+
+    lv_obj_t* currentVersionLabel_ = nullptr;
+    lv_obj_t* statusLabel_ = nullptr;
+    lv_obj_t* progressBar_ = nullptr;
+    lv_obj_t* updateButton_ = nullptr;
+    lv_obj_t* updateBundledButton_ = nullptr;
+    lv_obj_t* enableWifiButton_ = nullptr;
+
+    void refreshCurrentVersion();
+    bool isWifiRadioOn();
+    void refreshWifiPrompt();
+    /** Enables/disables both update-trigger buttons together - only one performUpdate() can run
+     *  at a time (see updateTask_), regardless of which button started it. */
+    void setUpdateButtonsDisabled(bool disabled);
+    /** Marshal a UI-touching closure onto the LVGL task. Only ever invoked if liveInstance_ is
+     *  still this instance (checked at dispatch time and again right before running, on the LVGL
+     *  task) and isShown_ is true (this app's widget tree exists). */
+    void dispatchToUi(void (*work)(EspNowBridge&, void*), void* context, void (*freeContext)(void*));
+    void performUpdate(const std::string& filePath);
+    void startUpdateTask(const std::string& filePath);
+
+    static void updateTaskEntry(void* arg);
+    static void onUpdateButtonClicked(lv_event_t* event);
+    static void onUpdateBundledButtonClicked(lv_event_t* event);
+    static void onEnableWifiButtonClicked(lv_event_t* event);
+    static void onWifiEvent(Device* device, void* callbackContext, WifiEvent event);
+    static void waitForTransportTaskEntry(void* arg);
+};