New kernel drivers, filesystem API, and more (#513)

* **New Features**
  * BMI270 6-axis IMU driver added; new unified filesystem abstraction for mounted filesystems.
  * Public Wi‑Fi API surface (no implementation yet)
  * SDMMC driver added (kernel drive$)
  * expanded GPIO interrupt/callback support
* **Improvements**
  * M5Stack Tab5: revamped GPIO/power initialization and IMU integration.
  * LVGL updates including device fontSize configuration.
  * Updated all code related to SD card device/fs handling
  * Rename LilyGO T-HMI S3 to LilyGO T-HMI
* **Bug Fixes**
  * Simplified and consolidated SD card handling and mount discovery.

Tactility/Include/Tactility/MountPoints.h

@@ -21,6 +21,6 @@ constexpr auto* MOUNT_POINT_DATA = "/data";
 constexpr auto* MOUNT_POINT_DATA = "data";
 #endif
 
-std::vector<dirent> getMountPoints();
+std::vector<dirent> getFileSystemDirents();
 
 } // namespace

Tactility/Include/Tactility/Paths.h

@@ -2,10 +2,15 @@
 
 #include <string>
 
+#include <tactility/filesystem/file_system.h>
+
+
 namespace tt {
 
 bool findFirstMountedSdCardPath(std::string& path);
 
+FileSystem* findSdcardFileSystem(bool mustBeMounted);
+
 std::string getSystemRootPath();
 
 std::string getTempPath();

Tactility/Include/Tactility/hal/sdcard/SdCardDevice.h

@@ -2,9 +2,11 @@
 
 #include <tactility/hal/Device.h>
 
-#include <Tactility/TactilityCore.h>
 #include <Tactility/Lock.h>
+#include <Tactility/TactilityCore.h>
 
+
+struct FileSystem;
 namespace tt::hal::sdcard {
 
 /**
@@ -31,11 +33,12 @@ public:
 private:
 
     MountBehaviour mountBehaviour;
+    FileSystem* fileSystem;
 
 public:
 
-    explicit SdCardDevice(MountBehaviour mountBehaviour) : mountBehaviour(mountBehaviour) {}
-    ~SdCardDevice() override = default;
+    explicit SdCardDevice(MountBehaviour mountBehaviour);
+    ~SdCardDevice() override;
 
     Type getType() const final { return Type::SdCard; };
 

Tactility/Include/Tactility/hal/sdcard/SdmmcDevice.h

@@ -1,93 +0,0 @@
-#ifdef ESP_PLATFORM
-
-#pragma once
-
-#include "SdCardDevice.h"
-
-#include <Tactility/RecursiveMutex.h>
-#include <tactility/hal/Device.h>
-#include <sd_protocol_types.h>
-#include <soc/gpio_num.h>
-#include <utility>
-#include <vector>
-
-namespace tt::hal::sdcard {
-
-/**
- * SD card interface for the SDMMC interface.
- */
-class SdmmcDevice final : public SdCardDevice {
-
-    std::shared_ptr<RecursiveMutex> mutex = std::make_shared<RecursiveMutex>();
-
-public:
-
-    struct Config {
-        Config(
-            gpio_num_t pinClock,
-            gpio_num_t pinCmd,
-            gpio_num_t pinD0,
-            gpio_num_t pinD1,
-            gpio_num_t pinD2,
-            gpio_num_t pinD3,
-            MountBehaviour mountBehaviourAtBoot,
-            uint8_t busWidth = 4
-        ) :
-            pinClock(pinClock),
-            pinCmd(pinCmd),
-            pinD0(pinD0),
-            pinD1(pinD1),
-            pinD2(pinD2),
-            pinD3(pinD3),
-            mountBehaviourAtBoot(mountBehaviourAtBoot),
-            busWidth(busWidth)
-        {}
-
-        int spiFrequencyKhz;
-        gpio_num_t pinClock;
-        gpio_num_t pinCmd;
-        gpio_num_t pinD0;
-        gpio_num_t pinD1;
-        gpio_num_t pinD2;
-        gpio_num_t pinD3;
-        MountBehaviour mountBehaviourAtBoot;
-        uint8_t busWidth;
-        bool formatOnMountFailed = false;
-        uint16_t maxOpenFiles = 4;
-        uint16_t allocUnitSize = 16 * 1024;
-        bool statusCheckEnabled = false;
-    };
-
-private:
-
-    std::string mountPath;
-    sdmmc_card_t* card = nullptr;
-    std::shared_ptr<Config> config;
-
-    bool applyGpioWorkAround();
-    bool mountInternal(const std::string& mountPath);
-
-public:
-
-    explicit SdmmcDevice(std::unique_ptr<Config> config) : SdCardDevice(config->mountBehaviourAtBoot),
-        config(std::move(config))
-    {}
-
-    std::string getName() const override { return "SDMMC"; }
-    std::string getDescription() const override { return "SD card via SDMMC interface"; }
-
-    bool mount(const std::string& mountPath) override;
-    bool unmount() override;
-    std::string getMountPath() const override { return mountPath; }
-
-    std::shared_ptr<Lock> getLock() const override { return mutex; }
-
-    State getState(TickType_t timeout) const override;
-
-    /** return card when mounted, otherwise return nullptr */
-    sdmmc_card_t* getCard() { return card; }
-};
-
-}
-
-#endif