lvgl: make examples compatible with lvgl 9

Author: facchinm

examples/BouncingBall/BouncingBall.ino

@@ -381,6 +381,9 @@ void idle( void )
   draw();
 }
 
+#if (LVGL_VERSION_MAJOR == 9)
+#define  LV_IMG_CF_TRUE_COLOR LV_COLOR_FORMAT_RGB565
+#endif
 
 void init_ball(void)
 {

examples/Gears/Gears.ino

@@ -94,6 +94,10 @@ static void anim(lv_timer_t * timer) {
   Arduino_H7_Video display(720, 480, USBCVideo);
 #endif
 
+#if (LVGL_VERSION_MAJOR == 9)
+#define  LV_IMG_CF_TRUE_COLOR LV_COLOR_FORMAT_RGB565
+#endif
+
 void setup() {
   Serial.begin(115200);
 

examples/GearsPlus/GearsPlus.ino

@@ -119,6 +119,10 @@ static void anim(lv_timer_t * timer) {
   Arduino_H7_Video display(720, 480, USBCVideo);
 #endif
 
+#if (LVGL_VERSION_MAJOR == 9)
+#define  LV_IMG_CF_TRUE_COLOR LV_COLOR_FORMAT_RGB565
+#endif
+
 void setup() {
   Serial.begin(115200);
   //while (!Serial);