Touch and display driver subsystems reworked (and more) (#302)

- Refactored `TouchDevice`: it can now start/stop LVGL separately, and it has an optional `TouchDriver` interface
- Refactored `DisplayDevice`: it can now start/stop LVGL separately, and it has an optional `DisplayDriver` interface
- Updated all boards and drivers for above changes
- LVGL can now be stopped and (re)started on the fly
- Fixed issues with restarting Gui and Statusbar services
- Refactored `Gui` service to be class and renamed `Gui` to `GuiService`
- Fixed `Statusbar` service: forgot to deregister one of the icons
- Updated `esp_lcd_st7701` to v1.1.3
- `lv_textarea_create()` now automatically registers the hardware keyboard hooks (by wrapping the function)
- Fixed and updated `tactility.py`
- Cleanup of a lot of code
- `BootInitLvglBegin` and `BootInitLvglEnd` are replaced by `LvglStarted` and `LvglStopped`.
- Introduced `tt::service::State` which is accessible via `tt::service::getState()` (and internally via `ServiceInstance`)
- Started replacing `#define TAG` with `constexpr auto TAG = "..";`

Boards/LilygoTdeck/Source/hal/TdeckDisplay.cpp

@@ -41,5 +41,6 @@ std::shared_ptr<tt::hal::display::DisplayDevice> createDisplay() {
 
     configuration->backlightDutyFunction = driver::pwmbacklight::setBacklightDuty;
 
-    return std::make_shared<St7789Display>(std::move(configuration));
+    auto display = std::make_shared<St7789Display>(std::move(configuration));
+    return std::reinterpret_pointer_cast<tt::hal::display::DisplayDevice>(display);
 }

Boards/LilygoTdeck/Source/hal/TdeckDisplay.h

@@ -1,40 +1,5 @@
 #pragma once
 
 #include "Tactility/hal/display/DisplayDevice.h"
-#include <esp_lcd_types.h>
-#include <lvgl.h>
-
-class TdeckDisplay : public tt::hal::display::DisplayDevice {
-
-private:
-
-    esp_lcd_panel_io_handle_t ioHandle = nullptr;
-    esp_lcd_panel_handle_t panelHandle = nullptr;
-    lv_display_t* displayHandle = nullptr;
-    bool poweredOn = false;
-
-public:
-
-    std::string getName() const final { return "ST7789"; }
-    std::string getDescription() const final { return "SPI display"; }
-
-    bool start() override;
-
-    bool stop() override;
-
-    void setPowerOn(bool turnOn) override;
-    bool isPoweredOn() const override { return poweredOn; };
-    bool supportsPowerControl() const override { return true; }
-
-    std::shared_ptr<tt::hal::touch::TouchDevice> _Nullable createTouch() override;
-
-    void setBacklightDuty(uint8_t backlightDuty) override;
-    bool supportsBacklightDuty() const override { return true; }
-
-    void setGammaCurve(uint8_t index) override;
-    uint8_t getGammaCurveCount() const override { return 4; };
-
-    lv_display_t* _Nullable getLvglDisplay() const override { return displayHandle; }
-};
 
 std::shared_ptr<tt::hal::display::DisplayDevice> createDisplay();

Boards/LilygoTdeck/Source/hal/TdeckKeyboard.cpp

@@ -7,7 +7,7 @@
 #define TDECK_KEYBOARD_I2C_BUS_HANDLE I2C_NUM_0
 #define TDECK_KEYBOARD_SLAVE_ADDRESS 0x55
 
-static inline bool keyboard_i2c_read(uint8_t* output) {
+static bool keyboard_i2c_read(uint8_t* output) {
     return tt::hal::i2c::masterRead(TDECK_KEYBOARD_I2C_BUS_HANDLE, TDECK_KEYBOARD_SLAVE_ADDRESS, output, 1, 100 / portTICK_PERIOD_MS);
 }
 
@@ -43,7 +43,7 @@ static void keyboard_read_callback(TT_UNUSED lv_indev_t* indev, lv_indev_data_t*
     last_buffer = read_buffer;
 }
 
-bool TdeckKeyboard::start(lv_display_t* display) {
+bool TdeckKeyboard::startLvgl(lv_display_t* display) {
     deviceHandle = lv_indev_create();
     lv_indev_set_type(deviceHandle, LV_INDEV_TYPE_KEYPAD);
     lv_indev_set_read_cb(deviceHandle, &keyboard_read_callback);
@@ -52,7 +52,7 @@ bool TdeckKeyboard::start(lv_display_t* display) {
     return true;
 }
 
-bool TdeckKeyboard::stop() {
+bool TdeckKeyboard::stopLvgl() {
     lv_indev_delete(deviceHandle);
     deviceHandle = nullptr;
     return true;

Boards/LilygoTdeck/Source/hal/TdeckKeyboard.h

@@ -5,19 +5,17 @@
 #include <esp_lcd_panel_io_interface.h>
 #include <esp_lcd_touch.h>
 
-class TdeckKeyboard : public tt::hal::keyboard::KeyboardDevice {
-
-private:
+class TdeckKeyboard final : public tt::hal::keyboard::KeyboardDevice {
 
     lv_indev_t* _Nullable deviceHandle = nullptr;
 
 public:
 
-    std::string getName() const final { return "T-Deck Keyboard"; }
-    std::string getDescription() const final { return "I2C keyboard"; }
+    std::string getName() const override { return "T-Deck Keyboard"; }
+    std::string getDescription() const override { return "I2C keyboard"; }
 
-    bool start(lv_display_t* display) override;
-    bool stop() override;
+    bool startLvgl(lv_display_t* display) override;
+    bool stopLvgl() override;
     bool isAttached() const override;
     lv_indev_t* _Nullable getLvglIndev() override { return deviceHandle; }
 };