refactor(lvgl): Refactor LVGL display flush callback

Author: jgauchia

lib/lvgl/lv_conf.h

@@ -979,7 +979,7 @@
 #define LV_USE_SNAPSHOT 0
 
 /** 1: Enable system monitor component */
-#define LV_USE_SYSMON   1
+#define LV_USE_SYSMON   0
 #if LV_USE_SYSMON
     /** Get the idle percentage. E.g. uint32_t my_get_idle(void); */
     #define LV_SYSMON_GET_IDLE lv_timer_get_idle

lib/lvgl/src/lvglSetup.cpp

@@ -35,15 +35,15 @@ Maps mapView;
  */
 void IRAM_ATTR displayFlush(lv_display_t *disp, const lv_area_t *area, uint8_t *px_map)
 { 
-	uint32_t w = (area->x2 - area->x1 + 1);
-	uint32_t h = (area->y2 - area->y1 + 1);
+    const uint32_t w = area->x2 - area->x1 + 1;
+    const uint32_t h = area->y2 - area->y1 + 1;
 
-	tft.setSwapBytes(true);
-	tft.setAddrWindow(area->x1, area->y1, w, h);
-	tft.pushImageDMA(area->x1, area->y1, area->x2 - area->x1 + 1, area->y2 - area->y1 + 1, (uint16_t*)px_map);
-	tft.setSwapBytes(false);
+    tft.setSwapBytes(true);
+    tft.setAddrWindow(area->x1, area->y1, w, h);
+    tft.pushImageDMA(area->x1, area->y1, w, h, reinterpret_cast<uint16_t*>(px_map));
+    tft.setSwapBytes(false);
 
-	lv_display_flush_ready(disp);
+    lv_display_flush_ready(disp);
 }
 
 /**

platformio.ini

@@ -24,6 +24,7 @@ monitor_filters =
   esp32_exception_decoder
 extra_scripts = pre:prebuild.py
 build_flags = 
+  -O3
   -D LV_CONF_PATH="\"${PROJECT_DIR}/lib/lvgl/lv_conf.h\""
   -D CORE_DEBUG_LEVEL=5
   -D DISABLE_RADIO=1