New board: Elecrow CrowPanel Basic 2.8" (#225)

- Implemented Elecrow CrowPanel Basic 2.8"
- Change default "invert" setting for ILI934x driver from `true` to `false`
- Created `Xpt2046` driver subproject
- Refactored unPhone to use new `Xpt2046` driver subproject

Drivers/XPT2046/Source/Xpt2046Touch.cpp

@@ -0,0 +1,98 @@
+#include "Xpt2046Touch.h"
+
+#include <Tactility/Log.h>
+#include <Tactility/lvgl/LvglSync.h>
+
+#include <esp_err.h>
+#include <esp_lcd_touch_xpt2046.h>
+#include <esp_lvgl_port.h>
+
+#define TAG "xpt2046_touch"
+
+Xpt2046Touch* Xpt2046Touch::instance = nullptr;
+
+bool Xpt2046Touch::start(lv_display_t* display) {
+    const esp_lcd_panel_io_spi_config_t io_config = ESP_LCD_TOUCH_IO_SPI_XPT2046_CONFIG(configuration->spiPinCs);
+
+    if (esp_lcd_new_panel_io_spi(SPI2_HOST, &io_config, &ioHandle) != ESP_OK) {
+        TT_LOG_E(TAG, "Touch IO SPI creation failed");
+        return false;
+    }
+
+    esp_lcd_touch_config_t config = {
+        .x_max = configuration->xMax,
+        .y_max = configuration->yMax,
+        .rst_gpio_num = GPIO_NUM_NC,
+        .int_gpio_num = GPIO_NUM_NC,
+        .levels = {
+            .reset = 0,
+            .interrupt = 0,
+        },
+        .flags = {
+            .swap_xy = configuration->swapXy,
+            .mirror_x = configuration->mirrorX,
+            .mirror_y = configuration->mirrorY,
+        },
+        .process_coordinates = nullptr,
+        .interrupt_callback = nullptr,
+        .user_data = nullptr,
+        .driver_data = nullptr
+    };
+
+    if (esp_lcd_touch_new_spi_xpt2046(ioHandle, &config, &touchHandle) != ESP_OK) {
+        TT_LOG_E(TAG, "XPT2046 driver init failed");
+        cleanup();
+        return false;
+    }
+
+    const lvgl_port_touch_cfg_t touch_cfg = {
+        .disp = display,
+        .handle = touchHandle,
+    };
+
+    TT_LOG_I(TAG, "Adding touch to LVGL");
+    deviceHandle = lvgl_port_add_touch(&touch_cfg);
+    if (deviceHandle == nullptr) {
+        TT_LOG_E(TAG, "Adding touch failed");
+        cleanup();
+        return false;
+    }
+
+    instance = this;
+    return true;
+}
+
+bool Xpt2046Touch::stop() {
+    instance = nullptr;
+    cleanup();
+    return true;
+}
+
+void Xpt2046Touch::cleanup() {
+    if (deviceHandle != nullptr) {
+        lv_indev_delete(deviceHandle);
+        deviceHandle = nullptr;
+    }
+
+    if (touchHandle != nullptr) {
+        esp_lcd_touch_del(touchHandle);
+        touchHandle = nullptr;
+    }
+
+    if (ioHandle != nullptr) {
+        esp_lcd_panel_io_del(ioHandle);
+        ioHandle = nullptr;
+    }
+}
+
+bool Xpt2046Touch::getVBat(float& outputVbat) {
+    if (touchHandle != nullptr) {
+        // Shares the SPI bus with the display, so we have to sync/lock as this method might be called from anywhere
+        if (tt::lvgl::lock(50 / portTICK_PERIOD_MS)) {
+            esp_lcd_touch_xpt2046_read_battery_level(touchHandle, &outputVbat);
+            tt::lvgl::unlock();
+            return true;
+        }
+    }
+    return false;
+}