Merge branch 'develop' of https://github.com/rzeldent/esp32-smartdisplay

into develop
rzeldent · Nov 1, 2024 · d056037 · d056037
2 parents 9d56cbf + 8755372
commit d056037
Showing 1 changed file with 36 additions and 0 deletions.
diff --git a/src/esp32_smartdisplay.c b/src/esp32_smartdisplay.c
@@ -194,6 +194,11 @@ void smartdisplay_init()
   // Setup TFT display
   display = lvgl_lcd_init();
 
+#ifndef DISPLAY_SOFTWARE_ROTATION
+  // Register callback for hardware rotation
+  lv_display_add_event_cb(display, lvgl_display_resolution_changed_callback, LV_EVENT_RESOLUTION_CHANGED, NULL);
+#endif
+
   //  Clear screen
   lv_obj_clean(lv_scr_act());
   // Turn backlight on (50%)
@@ -210,3 +215,34 @@ void smartdisplay_init()
   lv_indev_enable(indev, true);
 #endif
 }
+
+#ifndef DISPLAY_SOFTWARE_ROTATION
+// Called when driver resolution is updated (including rotation)
+// Top of the display is top left when connector is at the bottom
+// The rotation values are relative to how you would rotate the physical display in the clockwise direction.
+// So, LV_DISPLAY_ROTATION_90 means you rotate the hardware 90 degrees clockwise, and the display rotates 90 degrees counterclockwise to compensate.
+void lvgl_display_resolution_changed_callback(lv_event_t *event)
+{
+  const esp_lcd_panel_handle_t panel_handle = display->user_data;
+  switch (display->rotation)
+  {
+  case LV_DISPLAY_ROTATION_0:
+    ESP_ERROR_CHECK(esp_lcd_panel_swap_xy(panel_handle, DISPLAY_SWAP_XY));
+    ESP_ERROR_CHECK(esp_lcd_panel_mirror(panel_handle, DISPLAY_MIRROR_X, DISPLAY_MIRROR_Y));
+    break;
+  case LV_DISPLAY_ROTATION_90:
+    ESP_ERROR_CHECK(esp_lcd_panel_swap_xy(panel_handle, !DISPLAY_SWAP_XY));
+    ESP_ERROR_CHECK(esp_lcd_panel_mirror(panel_handle, DISPLAY_MIRROR_X, !DISPLAY_MIRROR_Y));
+    break;
+  case LV_DISPLAY_ROTATION_180:
+    ESP_ERROR_CHECK(esp_lcd_panel_swap_xy(panel_handle, DISPLAY_SWAP_XY));
+    ESP_ERROR_CHECK(esp_lcd_panel_mirror(panel_handle, !DISPLAY_MIRROR_X, !DISPLAY_MIRROR_Y));
+    break;
+  case LV_DISPLAY_ROTATION_270:
+    ESP_ERROR_CHECK(esp_lcd_panel_swap_xy(panel_handle, !DISPLAY_SWAP_XY));
+    ESP_ERROR_CHECK(esp_lcd_panel_mirror(panel_handle, !DISPLAY_MIRROR_X, DISPLAY_MIRROR_Y));
+    break;
+  }
+}
+
+#endif