disp_drv.ver_res=240; disp_drv.draw_buf= &draw_buf; disp_drv.flush_cb= display_flush;lv_disp_drv_register(&disp_drv); ... }voidloop() { ...if(disp_drv) {//<<< addedlv_disp_flush_ready(disp_drv); disp_drv =nullptr; }if(gui_update_timer.execute()) {lv_task_handler...