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 = "..";`

Drivers/ST7796/Source/St7796Display.cpp

@@ -2,16 +2,13 @@
 
 #include <Tactility/Log.h>
 
-#include <esp_lcd_panel_commands.h>
 #include <esp_lcd_panel_dev.h>
 #include <esp_lcd_st7796.h>
 #include <esp_lvgl_port.h>
 
-#define TAG "st7796"
-
-bool St7796Display::start() {
-    TT_LOG_I(TAG, "Starting");
+constexpr auto TAG = "ST7796";
 
+bool St7796Display::createIoHandle(esp_lcd_panel_io_handle_t& ioHandle) {
     const esp_lcd_panel_io_spi_config_t panel_io_config = {
         .cs_gpio_num = configuration->csPin,
         .dc_gpio_num = configuration->dcPin,
@@ -36,11 +33,10 @@ bool St7796Display::start() {
         }
     };
 
-    if (esp_lcd_new_panel_io_spi(configuration->spiBusHandle, &panel_io_config, &ioHandle) != ESP_OK) {
-        TT_LOG_E(TAG, "Failed to create panel");
-        return false;
-    }
+    return esp_lcd_new_panel_io_spi(configuration->spiBusHandle, &panel_io_config, &ioHandle) == ESP_OK;
+}
 
+bool St7796Display::createPanelHandle(esp_lcd_panel_io_handle_t ioHandle, esp_lcd_panel_handle_t& panelHandle) {
     static const st7796_lcd_init_cmd_t lcd_init_cmds[] = {
         {0x01, (uint8_t[]) {0x00}, 0, 120},
         {0x11, (uint8_t[]) {0x00}, 0, 120},
@@ -69,7 +65,6 @@ bool St7796Display::start() {
         .init_cmds_size = sizeof(lcd_init_cmds) / sizeof(st7796_lcd_init_cmd_t),
     };
 
-
     const esp_lcd_panel_dev_config_t panel_config = {
         .reset_gpio_num = configuration->resetPin, // Set to -1 if not use
 #if ESP_IDF_VERSION < ESP_IDF_VERSION_VAL(5, 0, 0)
@@ -92,7 +87,7 @@ bool St7796Display::start() {
         },
         .vendor_config = nullptr
     };
-*/
+    */
     if (esp_lcd_new_panel_st7796(ioHandle, &panel_config, &panelHandle) != ESP_OK) {
         TT_LOG_E(TAG, "Failed to create panel");
         return false;
@@ -133,18 +128,15 @@ bool St7796Display::start() {
         return false;
     }
 
-    uint32_t buffer_size;
-    if (configuration->bufferSize == 0) {
-        buffer_size = configuration->horizontalResolution * configuration->verticalResolution / 10;
-    } else {
-        buffer_size = configuration->bufferSize;
-    }
+    return true;
+}
 
-    const lvgl_port_display_cfg_t disp_cfg = {
+lvgl_port_display_cfg_t St7796Display::getLvglPortDisplayConfig(esp_lcd_panel_io_handle_t ioHandle, esp_lcd_panel_handle_t panelHandle) {
+    return {
         .io_handle = ioHandle,
         .panel_handle = panelHandle,
         .control_handle = nullptr,
-        .buffer_size = buffer_size,
+        .buffer_size = configuration->bufferSize,
         .double_buffer = false,
         .trans_size = 0,
         .hres = configuration->horizontalResolution,
@@ -158,28 +150,6 @@ bool St7796Display::start() {
         .color_format = LV_COLOR_FORMAT_NATIVE,
         .flags = {.buff_dma = true, .buff_spiram = false, .sw_rotate = false, .swap_bytes = true, .full_refresh = false, .direct_mode = false}
     };
-
-    displayHandle = lvgl_port_add_disp(&disp_cfg);
-
-    TT_LOG_I(TAG, "Finished");
-    return displayHandle != nullptr;
-}
-
-bool St7796Display::stop() {
-    assert(displayHandle != nullptr);
-
-    lvgl_port_remove_disp(displayHandle);
-
-    if (esp_lcd_panel_del(panelHandle) != ESP_OK) {
-        return false;
-    }
-
-    if (esp_lcd_panel_io_del(ioHandle) != ESP_OK) {
-        return false;
-    }
-
-    displayHandle = nullptr;
-    return true;
 }
 
 void St7796Display::setGammaCurve(uint8_t index) {
@@ -200,6 +170,7 @@ void St7796Display::setGammaCurve(uint8_t index) {
         default:
             return;
     }
+
     const uint8_t param[] = {
         gamma_curve
     };