klips/esp/cpp/07_lcd-panel/main/main.cpp

#include "display.h"

#include "esp_log.h"
#include "lvgl.h"

void setup()
{
  Display d;

  ESP_LOGI(TAG, "Display LVGL Scroll Text");
  // Lock the mutex due to the LVGL APIs are not thread-safe
  _lock_acquire(&Display::lvgl_api_lock_);

  // UI function
  {
    lv_obj_t *scr = lv_display_get_screen_active(d.get_display());
    lv_obj_t *label = lv_label_create(scr);
    // Circular scroll
    lv_label_set_long_mode(label,
                           LV_LABEL_LONG_SCROLL_CIRCULAR);
    lv_label_set_text(label,
                      "Hello hello hello hello hello hello hello hello.");
    // Size of the screen
    // if you use rotation 90 or 270 use lv_display_get_vertical_resolution
    lv_obj_set_width(label,
                     lv_display_get_horizontal_resolution(d.get_display()));
    lv_obj_align(label, LV_ALIGN_TOP_MID, 0, 0);
  }

  _lock_release(&Display::lvgl_api_lock_);
}

void loop() { }