LVGL increase image cache when PSRAM is present

tasmota/lvgl_berry/tasmota_lv_conf.h

@@ -259,6 +259,7 @@ typedef void * lv_fs_drv_user_data_t;
  * However the opened images might consume additional RAM.
  * Set it to 0 to disable caching */
 #define LV_IMG_CACHE_DEF_SIZE       1
+#define LV_IMG_CACHE_DEF_SIZE_PSRAM 20    // special Tasmota setting when PSRAM is used
 
 /*Declare the type of the user data of image decoder (can be e.g. `void *`, `int`, `struct`)*/
 typedef void * lv_img_decoder_user_data_t;

tasmota/xdrv_54_lvgl.ino

@@ -445,6 +445,10 @@ void start_lvgl(const char * uconfig) {
   lv_png_init();
 #endif // USE_LVGL_PNG_DECODER
 
+  if (psramFound()) {
+    lv_img_cache_set_size(LV_IMG_CACHE_DEF_SIZE_PSRAM);
+  }
+
   AddLog(LOG_LEVEL_INFO, PSTR(D_LOG_LVGL "LVGL initialized"));
 }