LVGL 9, From Scratch to Benchmark, For newbie/beginner/starter

ESP32_LVGL/LVGL9/LVGL9_Benchmark_TFT-eSPI_Arduino/LVGL9_Benchmark_TFT-eSPI_Arduino.ino

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+/////////////////////////////////////////////////////////////////
+/*
+  LVGL 9, From Scratch to Benchmark, For newbie/beginner/starter #LVGL #UI #ESP32 #Benchmark
+  For More Information: https://youtu.be/s4_fUwhw-dI
+  Created by Eric N. (ThatProject)
+*/
+/////////////////////////////////////////////////////////////////
+
+// Version Info
+// ESP32                v2.0.14
+// LVGL                 v9.0.0
+// TFT_eSPI             v2.5.34
+// FT6236(Dustin Watts) v1.0.2
+
+#include <lvgl.h>
+#include <TFT_eSPI.h>
+#include <FT6236.h>
+#include <demos/lv_demos.h>
+
+#define SDA_FT6236 8
+#define SCL_FT6236 3
+FT6236 ts = FT6236();
+
+#define TFT_HOR_RES 480
+#define TFT_VER_RES 320
+
+/*LVGL draw into this buffer, 1/10 screen size usually works well. The size is in bytes*/
+void *draw_buf_1;
+unsigned long lastTickMillis = 0;
+
+static lv_display_t *disp;
+
+#define DRAW_BUF_SIZE (TFT_HOR_RES * TFT_VER_RES / 10 * (LV_COLOR_DEPTH / 8))
+
+void my_touchpad_read(lv_indev_t *indev, lv_indev_data_t *data) {
+  if (ts.touched()) {
+
+    TS_Point p = ts.getPoint();
+    data->point.x = TFT_HOR_RES - p.y;
+    data->point.y = p.x;
+    Serial.printf("x:%d, y:%d\n", data->point.x, data->point.y);
+    data->state = LV_INDEV_STATE_PRESSED;
+  } else {
+    data->state = LV_INDEV_STATE_RELEASED;
+  }
+}
+
+void setup() {
+  Serial.begin(115200);
+
+  if (!ts.begin(40, SDA_FT6236, SCL_FT6236)) {
+    Serial.println("Unable to start the capacitive touch Screen.");
+  }
+
+  lv_init();
+
+  draw_buf_1 = heap_caps_malloc(DRAW_BUF_SIZE, MALLOC_CAP_DMA | MALLOC_CAP_INTERNAL);
+  disp = lv_tft_espi_create(TFT_HOR_RES, TFT_VER_RES, draw_buf_1, DRAW_BUF_SIZE);
+
+  lv_indev_t *indev = lv_indev_create();
+  lv_indev_set_type(indev, LV_INDEV_TYPE_POINTER); /*Touchpad should have POINTER type*/
+  lv_indev_set_read_cb(indev, my_touchpad_read);
+
+  String LVGL_Arduino = "Hello Arduino!\n";
+  LVGL_Arduino += String('V') + lv_version_major() + "." + lv_version_minor() + "." + lv_version_patch();
+  Serial.println(LVGL_Arduino);
+
+  lv_demo_benchmark();
+}
+
+void loop() {
+  // LVGL Tick Interface
+  unsigned int tickPeriod = millis() - lastTickMillis;
+  lv_tick_inc(tickPeriod);
+  lastTickMillis = millis();
+
+  // LVGL Task Handler
+  lv_task_handler();
+}