Teensy keeps rebooting on v8

I’ve been using Teensy 4.0 with a 480x320 and a touch screen on v7.11.0 and its been working fine.

I’m now trying to use v8.0.2. The lv_demo_widgets() compiles ok and I can see the picture on the LCD.

The problem is after about 10 seconds the Teensy reboots and now stuck in the reboot loop.
I think it is some sort of memory problem.
Any idea of how to fix this ?

#include <lvgl.h>

#include <ILI9488_t3.h>
#include <SPI.h>
#include <Adafruit_FT6206.h>

#include <lv_demo.h>
#define ON  LOW
#define OFF HIGH
#define TFT_CS 10
#define TFT_DC  9

int LCD_BL = 14;
int LCD_RST = 15;

int LED_R = 24;
int LED_B = 26;
int LED_G = 25;
int led = 13;

ILI9488_t3 display = ILI9488_t3(&SPI, TFT_CS, TFT_DC);
Adafruit_FT6206 ts = Adafruit_FT6206();

#define LVGL_TICK_PERIOD 60
/*Change to your screen resolution*/
static const uint32_t screenWidth  = 480;
static const uint32_t screenHeight = 320;

static lv_disp_draw_buf_t draw_buf;
static lv_color_t buf[ screenWidth * 10 ];
static lv_color_t buf2[ screenWidth * 10 ];
int oldTouchX = 0;
int oldTouchY = 0;
     
IntervalTimer tick;
#if LV_USE_LOG != 0
/* Serial debugging */
void my_print( lv_log_level_t level, const char * file, uint32_t line, const char * fn_name, const char * dsc )
{
   Serial.printf( "%s(%s)@%d->%s\r\n", file, fn_name, line, dsc );
   Serial.flush();
}
#endif

bool my_touchpad_read(lv_indev_drv_t * indev_driver, lv_indev_data_t * data)
{
  uint16_t touchX, touchY;

  if (ts.touched())
  {   
  
      TS_Point p = ts.getPoint(); 
   
      touchX = p.y;         // Rotate the co-ordinates
      touchY = p.x;
      touchY = 320-touchY;
    Serial.println(p.x);
    Serial.println(p.y);
    
      if ((touchX != oldTouchX) || (touchY != oldTouchY))
      {
           oldTouchY = touchY;
           oldTouchX = touchX;
           data->state = LV_INDEV_STATE_PR; 
           data->point.x = touchX;
           data->point.y = touchY;
       
       }
  }else
  {
       data->point.x = oldTouchX;
       data->point.y = oldTouchY;
       data->state =LV_INDEV_STATE_REL;
  }
        
  return 0;
  
}

static void lv_tick_handler(void)
{

  lv_tick_inc(LVGL_TICK_PERIOD);
}

/* Display flushing */
void my_disp_flush( lv_disp_drv_t *disp, const lv_area_t *area, lv_color_t *color_p )
{
  
  uint16_t width = (area->x2 - area->x1 +1);
  uint16_t height = (area->y2 - area->y1+1);

  display.writeRect(area->x1, area->y1, width, height, (uint16_t *)color_p);
 
  lv_disp_flush_ready(disp); /* tell lvgl that flushing is done */
}

void setup()
{

    digitalWrite(LCD_BL, HIGH); 
        
    Serial.begin(9600);
    while(!Serial);
    Serial.print(CrashReport);
   
    Serial.println( "LVGL test Arduino! (V8.0.X)" );
    
    display.begin();
    display.fillScreen(ILI9488_GREEN);
    display.setRotation(1); 
    delay(600); 
    
    if (!ts.begin(40)) { 
        Serial.println("Unable to start touchscreen.");
    } 
    else { 
        Serial.println("Touchscreen started."); 
    }

   lv_init();
   lv_log_register_print_cb( my_print ); /* register print function for debugging */

   lv_disp_draw_buf_init( &draw_buf, buf, buf2, screenWidth * 10 );

   /*Initialize the display*/
   static lv_disp_drv_t disp_drv;
   lv_disp_drv_init( &disp_drv );
   /*Change the following line to your display resolution*/
   disp_drv.hor_res = screenWidth;
   disp_drv.ver_res = screenHeight;
   disp_drv.flush_cb = my_disp_flush;
   disp_drv.draw_buf = &draw_buf;
   lv_disp_drv_register( &disp_drv );

   /*Initialize the (dummy) input device driver*/

   static lv_indev_drv_t indev_drv;
   lv_indev_drv_init( &indev_drv );
   indev_drv.type = LV_INDEV_TYPE_POINTER;
   indev_drv.read_cb = my_touchpad_read;
   lv_indev_drv_register( &indev_drv );

  tick.begin(lv_tick_handler, LVGL_TICK_PERIOD * 1000);

    
#if 1
  
   /* Try an example from the lv_examples Arduino library
      make sure to include it as written above.
   lv_example_btn_1();
   */

   // uncomment one of these demos
   lv_demo_widgets();            // OK
   // lv_demo_benchmark();          // OK
   // lv_demo_keypad_encoder();     // works, but I haven't an encoder
   // lv_demo_music();              // NOK
   // lv_demo_printer();
   // lv_demo_stress();             // seems to be OK
#endif


    Serial.println( "Setup done" );
  
}

void loop()
{
   lv_timer_handler(); /* let the GUI do its work */
   delay( 5 );
}

Serial output:

CrashReport:
  A problem occurred at (system time) 0:9:45
  Code was executing from address 0x35C6E
  CFSR: 82
	(DACCVIOL) Data Access Violation
	(MMARVALID) Accessed Address: 0x0 (nullptr)
	  Check code at 0x35C6E - very likely a bug!
	  Run "addr2line -e mysketch.ino.elf 0x35C6E" for filename & line number.
  Temperature inside the chip was 49.67 °C
  Startup CPU clock speed is 600MHz
  Reboot was caused by auto reboot after fault or bad interrupt detected
LVGL test Arduino! (V8.0.X)
::begin 2002a62c 255 255 255
ILI9488_t3::begin - End
Touchscreen started.
[Info]	(0.000, +0)	 lv_obj_create: begin 	(in lv_obj.c line #188)
(����)@66->(null)
[Info]	(0.000, +0)	 lv_obj_create: begin 	(in lv_obj.c line #188)
(����)@66->(null)
[Info]	(0.000, +0)	 lv_obj_create: begin 	(in lv_obj.c line #188)
(����)@66->(null)
[Info]	(0.000, +0)	 lv_tabview_create: begin 	(in lv_tabview.c line #54)
(����)@73->(null)
[Info]	(0.000, +0)	 lv_btnmatrix_create: begin 	(in lv_btnmatrix.c line #82)
(����)@77->(null)
[Info]	(0.000, +0)	 lv_obj_create: begin 	(in lv_obj.c line #188)
(����)@66->(null)
[Info]	(0.000, +0)	 lv_obj_create: begin 	(in lv_obj.c line #188)
(����)@66->(null)
[Info]	(0.000, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.000, +0)	 flex_update: update 0x20031630 container 	(in lv_flex.c line #207)
(����)@87->(null)
[Info]	(0.000, +0)	 flex_update: update 0x20031490 container 	(in lv_flex.c line #207)
(����)@87->(null)
[Info]	(0.000, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.000, +0)	 flex_update: update 0x20031630 container 	(in lv_flex.c line #207)
(����)@87->(null)
[Info]	(0.000, +0)	 flex_update: update 0x20031490 container 	(in lv_flex.c line #207)
(����)@87->(null)
[Info]	(0.000, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.000, +0)	 flex_update: update 0x20031630 container 	(in lv_flex.c line #207)
(����)@87->(null)
[Info]	(0.000, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.000, +0)	 lv_obj_create: begin 	(in lv_obj.c line #188)
(����)@66->(null)
[Info]	(0.000, +0)	 lv_obj_create: begin 	(in lv_obj.c line #188)
(����)@66->(null)
[Info]	(0.000, +0)	 lv_obj_create: begin 	(in lv_obj.c line #188)
(����)@66->(null)
[Info]	(0.000, +0)	 lv_img_create: begin 	(in lv_img.c line #59)
(����)@65->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_btn_create: begin 	(in lv_btn.c line #51)
(����)@65->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_btn_create: begin 	(in lv_btn.c line #51)
(����)@65->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_keyboard_create: begin 	(in lv_keyboard.c line #124)
(����)@76->(null)
[Info]	(0.000, +0)	 lv_obj_create: begin 	(in lv_obj.c line #188)
(����)@66->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_textarea_create: begin 	(in lv_textarea.c line #86)
(����)@75->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.000, +0)	 flex_update: update 0x20031630 container 	(in lv_flex.c line #207)
(����)@87->(null)
[Info]	(0.000, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.000, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.000, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.000, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.000, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.000, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.000, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_textarea_create: begin 	(in lv_textarea.c line #86)
(����)@75->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.000, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.000, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_dropdown_create: begin 	(in lv_dropdown.c line #92)
(����)@75->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_textarea_create: begin 	(in lv_textarea.c line #86)
(����)@75->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.000, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.000, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.000, +0)	 lv_obj_create: begin 	(in lv_obj.c line #188)
(����)@66->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_slider_create: begin 	(in lv_slider.c line #61)
(����)@71->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_switch_create: begin 	(in lv_switch.c line #63)
(����)@71->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_switch_create: begin 	(in lv_switch.c line #63)
(����)@71->(null)
[Info]	(0.000, +0)	 lv_obj_create: begin 	(in lv_obj.c line #188)
(����)@66->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_chart_create: begin 	(in lv_chart.c line #66)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_chart_add_series: begin 	(in lv_chart.c line #326)
(����)@74->(null)
[Info]	(0.000, +0)	 lv_obj_create: begin 	(in lv_obj.c line #188)
(����)@66->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_chart_create: begin 	(in lv_chart.c line #66)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_chart_add_series: begin 	(in lv_chart.c line #326)
(����)@74->(null)
[Info]	(0.000, +0)	 lv_chart_add_series: begin 	(in lv_chart.c line #326)
(����)@74->(null)
[Info]	(0.000, +0)	 lv_obj_create: begin 	(in lv_obj.c line #188)
(����)@66->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_meter_create: begin 	(in lv_meter.c line #54)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_obj_create: begin 	(in lv_obj.c line #188)
(����)@66->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_obj_create: begin 	(in lv_obj.c line #188)
(����)@66->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_obj_create: begin 	(in lv_obj.c line #188)
(����)@66->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_obj_create: begin 	(in lv_obj.c line #188)
(����)@66->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_meter_create: begin 	(in lv_meter.c line #54)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_obj_create: begin 	(in lv_obj.c line #188)
(����)@66->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_obj_create: begin 	(in lv_obj.c line #188)
(����)@66->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_obj_create: begin 	(in lv_obj.c line #188)
(����)@66->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_obj_create: begin 	(in lv_obj.c line #188)
(����)@66->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_meter_create: begin 	(in lv_meter.c line #54)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_obj_create: begin 	(in lv_obj.c line #188)
(����)@66->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_obj_create: begin 	(in lv_obj.c line #188)
(����)@66->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_obj_create: begin 	(in lv_obj.c line #188)
(����)@66->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.000, +0)	 grid_update: update 0x2003190c container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x200323bc container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x20032e64 container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x2003172c container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x200339ac container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x20033cbc container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x2003400c container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x20034784 container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x20034e44 container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 flex_update: update 0x20031800 container 	(in lv_flex.c line #207)
(����)@87->(null)
[Info]	(0.000, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.000, +0)	 grid_update: update 0x2003190c container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x200323bc container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x20032e64 container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x2003172c container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x200339ac container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x20033cbc container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x2003400c container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x20034784 container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x20034e44 container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 flex_update: update 0x20031800 container 	(in lv_flex.c line #207)
(����)@87->(null)
[Info]	(0.000, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.000, +0)	 grid_update: update 0x2003190c container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x200323bc container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x2003172c container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x200339ac container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x20033cbc container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x2003400c container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x20034784 container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x20034e44 container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 flex_update: update 0x20031800 container 	(in lv_flex.c line #207)
(����)@87->(null)
[Info]	(0.000, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.000, +0)	 grid_update: update 0x2003190c container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x2003400c container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x20034784 container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x20034e44 container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.000, +0)	 grid_update: update 0x2003400c container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x20034784 container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x20034e44 container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.000, +0)	 grid_update: update 0x2003400c container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x20034784 container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x20034e44 container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 flex_update: update 0x20031800 container 	(in lv_flex.c line #207)
(����)@87->(null)
[Info]	(0.000, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.000, +0)	 grid_update: update 0x2003400c container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x20034784 container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x20034e44 container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 flex_update: update 0x20031800 container 	(in lv_flex.c line #207)
(����)@87->(null)
[Info]	(0.000, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.000, +0)	 grid_update: update 0x2003400c container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x20034784 container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x20034e44 container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 lv_obj_create: begin 	(in lv_obj.c line #188)
(����)@66->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_chart_create: begin 	(in lv_chart.c line #66)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_chart_add_series: begin 	(in lv_chart.c line #326)
(����)@74->(null)
[Info]	(0.000, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.000, +0)	 flex_update: update 0x2003188c container 	(in lv_flex.c line #207)
(����)@87->(null)
[Info]	(0.000, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.000, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.000, +0)	 lv_obj_create: begin 	(in lv_obj.c line #188)
(����)@66->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_obj_create: begin 	(in lv_obj.c line #188)
(����)@66->(null)
[Info]	(0.000, +0)	 lv_img_create: begin 	(in lv_img.c line #59)
(����)@65->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_obj_create: begin 	(in lv_obj.c line #188)
(����)@66->(null)
[Info]	(0.000, +0)	 lv_img_create: begin 	(in lv_img.c line #59)
(����)@65->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_obj_create: begin 	(in lv_obj.c line #188)
(����)@66->(null)
[Info]	(0.000, +0)	 lv_img_create: begin 	(in lv_img.c line #59)
(����)@65->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_obj_create: begin 	(in lv_obj.c line #188)
(����)@66->(null)
[Info]	(0.000, +0)	 lv_img_create: begin 	(in lv_img.c line #59)
(����)@65->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_obj_create: begin 	(in lv_obj.c line #188)
(����)@66->(null)
[Info]	(0.000, +0)	 lv_img_create: begin 	(in lv_img.c line #59)
(����)@65->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_obj_create: begin 	(in lv_obj.c line #188)
(����)@66->(null)
[Info]	(0.000, +0)	 lv_label_create: begin 	(in lv_label.c line #75)
(����)@69->(null)
[Info]	(0.000, +0)	 lv_checkbox_create: begin 	(in lv_checkbox.c line #58)
(����)@75->(null)
[Info]	(0.000, +0)	 lv_checkbox_create: begin 	(in lv_checkbox.c line #58)
(����)@75->(null)
[Info]	(0.000, +0)	 lv_checkbox_create: begin 	(in lv_checkbox.c line #58)
(����)@75->(null)
[Info]	(0.000, +0)	 lv_checkbox_create: begin 	(in lv_checkbox.c line #58)
(����)@75->(null)
[Info]	(0.000, +0)	 lv_checkbox_create: begin 	(in lv_checkbox.c line #58)
(����)@75->(null)
[Info]	(0.000, +0)	 lv_checkbox_create: begin 	(in lv_checkbox.c line #58)
(����)@75->(null)
[Info]	(0.000, +0)	 lv_obj_create: begin 	(in lv_obj.c line #188)
(����)@66->(null)
[Info]	(0.000, +0)	 lv_btn_create: begin 	(in lv_btn.c line #51)
(����)@65->(null)
[Info]	(0.000, +0)	 lv_btn_create: begin 	(in lv_btn.c line #51)
(����)@65->(null)
[Info]	(0.000, +0)	 lv_btn_create: begin 	(in lv_btn.c line #51)
(����)@65->(null)
[Info]	(0.000, +0)	 lv_btn_create: begin 	(in lv_btn.c line #51)
(����)@65->(null)
[Info]	(0.000, +0)	 lv_btn_create: begin 	(in lv_btn.c line #51)
(����)@65->(null)
[Info]	(0.000, +0)	 lv_btn_create: begin 	(in lv_btn.c line #51)
(����)@65->(null)
[Info]	(0.000, +0)	 lv_btn_create: begin 	(in lv_btn.c line #51)
(����)@65->(null)
[Info]	(0.000, +0)	 lv_btn_create: begin 	(in lv_btn.c line #51)
(����)@65->(null)
Setup done
[Info]	(0.000, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.000, +0)	 grid_update: update 0x20035834 container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x20035e74 container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x20036198 container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x200364bc container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x200367e4 container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x20036b10 container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 flex_update: update 0x20035d60 container 	(in lv_flex.c line #207)
(����)@87->(null)
[Info]	(0.000, +0)	 flex_update: update 0x20036e40 container 	(in lv_flex.c line #207)
(����)@87->(null)
[Info]	(0.000, +0)	 flex_update: update 0x2003188c container 	(in lv_flex.c line #207)
(����)@87->(null)
[Info]	(0.000, +0)	 flex_update: update 0x20037634 container 	(in lv_flex.c line #207)
(����)@87->(null)
[Info]	(0.000, +0)	 flex_update: update 0x20031490 container 	(in lv_flex.c line #207)
(����)@87->(null)
[Info]	(0.000, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.000, +0)	 grid_update: update 0x20035834 container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x20035e74 container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x20036198 container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x200364bc container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x200367e4 container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x20036b10 container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 flex_update: update 0x20035d60 container 	(in lv_flex.c line #207)
(����)@87->(null)
[Info]	(0.000, +0)	 flex_update: update 0x20036e40 container 	(in lv_flex.c line #207)
(����)@87->(null)
[Info]	(0.000, +0)	 flex_update: update 0x2003188c container 	(in lv_flex.c line #207)
(����)@87->(null)
[Info]	(0.000, +0)	 flex_update: update 0x20037634 container 	(in lv_flex.c line #207)
(����)@87->(null)
[Info]	(0.000, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.000, +0)	 grid_update: update 0x20035e74 container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x20036198 container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x200364bc container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x200367e4 container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 grid_update: update 0x20036b10 container 	(in lv_grid.c line #315)
(����)@87->(null)
[Info]	(0.000, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.000, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.180, +180)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@93->(null)
[Info]	(0.180, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.300, +120)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@93->(null)
[Info]	(0.360, +60)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@92->(null)
[Info]	(0.360, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.420, +60)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@92->(null)
[Info]	(0.420, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.480, +60)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@92->(null)
[Info]	(0.480, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.540, +60)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@92->(null)
[Info]	(0.600, +60)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@92->(null)
[Info]	(0.660, +60)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@92->(null)
[Info]	(0.720, +60)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@92->(null)
[Info]	(0.720, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.780, +60)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@92->(null)
[Info]	(0.840, +60)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@92->(null)
[Info]	(0.840, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.900, +60)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@92->(null)
[Info]	(0.900, +0)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@91->(null)
[Info]	(0.960, +60)	 lv_obj_update_layout: Layout update begin 	(in lv_obj_pos.c line #302)
(����)@92->(null)

I think I found the problem that cause the reboot. It is the debug print out.

If I comment out this line:

lv_log_register_print_cb( my_print ); /* register print function for debugging */

It works as normal. Not sure how the lv_log_register_print_cb is causing the reboot.

Another thing, the LV_DEMO_WIDGETS_SLIDESHOW is not working. No slide demo.