Merge develop into main branch (#137)

* SdCard HAL refactored (#135)

- Refactor SdCard HAL
- introduce Lockable

* Screenshot and FatFS improvements (#136)

- Fix screenshots on ESP32
- Improve Screenshot service
- Convert Screenshot app to class-based instead of structs
- Screenshot app now automatically updates when task is finished
- Enable FatFS long filename support

* Re-use common log messages (#138)

For consistency and binary size reduction

* Toolbar spinner should get margin to the right

* More TactilityC features (#139)

* Rewrote Loader

- Simplified Loader by removing custom threa
- Created DispatcherThread
- Move auto-starting apps to Boot app
- Fixed Dispatcher bug where it could get stuck not processing new
messages

* Hide AP settings if the AP is not saved

* Missing from previous commit

* Replace LV_EVENT_CLICKED with LV_EVENT_SHORT_CLICKED

* Refactored files app and created InputDialog (#140)

- Changed Files app so that it has a View and State
- Files app now allows for long-pressing on files to perform actions
- Files app now has rename and delete actions
- Created InputDialog app
- Improved AlertDialog app layout

TactilityCore/Source/Semaphore.h

@@ -15,37 +15,29 @@ namespace tt {
 
 /**
  * Wrapper for xSemaphoreCreateBinary (max count == 1) and xSemaphoreCreateCounting (max count > 1)
- * Can be used in IRQ mode (within ISR context)
+ * Can be used from IRQ/ISR mode, but cannot be created/destroyed from such a context.
  */
 class Semaphore {
 private:
     SemaphoreHandle_t handle;
 public:
     /**
+     * Cannot be called from IRQ/ISR mode.
      * @param[in] maxCount The maximum count
      * @param[in] initialCount The initial count
      */
     Semaphore(uint32_t maxCount, uint32_t initialCount);
 
-    /**
-     * @param instance The pointer to Semaphore instance
-     */
+    /** Cannot be called from IRQ/ISR mode. */
     ~Semaphore();
 
-    /** Acquire semaphore
-     * @param[in] timeout The timeout
-     * @return the status
-     */
-    TtStatus acquire(uint32_t timeout) const;
+    /** Acquire semaphore */
+    bool acquire(uint32_t timeoutTicks) const;
 
-    /** Release semaphore
-     * @return the status
-     */
-    TtStatus release() const;
+    /** Release semaphore */
+    bool release() const;
 
-    /** Get semaphore count
-     * @return semaphore count
-     */
+    /** @return semaphore count */
     uint32_t getCount() const;
 };