LVGL screenshot

100ask · August 28, 2023, 7:04am

lv_100ask_screenshot_demo

Introduction

lv_100ask_screenshot is a screenshot tool based on LVGL.

lv_100ask_screenshot features：

Save LVGL screen objects (full screen) as image files: lv_scr_act(),layer_sys(),layer_top()
Capture and save the specified LVGL object and its children as an image file
Supported save as: BMP, PNG, JPG
more todo…

lv_100ask_screenshot is very simple to use, and the subsequent custom expansion functions are also very convenient, so stay tuned for more functions.

Usage

Refer to the example in lv_lib_100ask/test/lv_100ask_screenshot_test.

Get lv_100ask_screenshot

Try lv_100ask_screenshot

You can try lv_100ask_screenshot functionality through these two files, please feel free to use them.

The path for saving images is “D:/” and cannot be modified:

lv_100ask_screenshot-windows-music-demo.zip (2.6 MB)
lv_100ask_screenshot-windows-widgets-demo.zip (2.6 MB)

kisvegabor · August 28, 2023, 7:30pm

Very nice! I’m sure it will be useful for many people!

100ask · August 29, 2023, 1:48am

Thank you! I hope so too!

MacDragon · April 22, 2024, 1:19pm

Hey, this looks generally useful, but after quickly trying out I’d prefer to be able to get a single actual screenshot of full display output for an actual real screenshot, is there a simple way of doing this without hooking flush_cb? As snapshot only seems to be able to get a layer at a time, but I want all visible layers in capture.

100ask · April 23, 2024, 2:30am

Hi

lv_100ask_screenshot based on snapshot.

If you want to obtain all the screenshots, the best way I can think of at the moment is to process them in flush_cb.

MacDragon · April 23, 2024, 5:26am

I actually now made a small modified copy of snapshot functions that takes a display object and renders scr/top/sys layers to do the job for now, this appears at a quick test to get me the result I wanted whilst allowing rendering in RGB8888 despite using 16bit RGB output.

100ask · April 23, 2024, 6:15am

Sounds great! Looking forward to your sharing of code and upgrading snapshot.

MacDragon · April 23, 2024, 11:30am

Sure, it’s pretty much just a quick hack, and I didn’t check if the output size is necessarily correct, as it worked as expected in my situation:

lv_result_t lv_screenshot_take_to_draw_buf(lv_display_t * disp, lv_color_format_t cf, lv_draw_buf_t * draw_buf)
{
LV_ASSERT_NULL(disp);
LV_ASSERT_NULL(draw_buf);
lv_result_t res;

switch(cf) {
    case LV_COLOR_FORMAT_RGB565:
    case LV_COLOR_FORMAT_RGB888:
    case LV_COLOR_FORMAT_XRGB8888:
    case LV_COLOR_FORMAT_ARGB8888:
        break;
    default:
        LV_LOG_WARN("Not supported color format");
        return LV_RESULT_INVALID;
}

res = lv_snapshot_reshape_draw_buf(disp->act_scr, draw_buf);
if(res != LV_RESULT_OK) return res;

/* clear draw buffer*/
lv_draw_buf_clear(draw_buf, NULL);

lv_area_t snapshot_area;
int32_t w = draw_buf->header.w;
int32_t h = draw_buf->header.h;
int32_t ext_size = _lv_obj_get_ext_draw_size(disp->act_scr);
lv_obj_get_coords(disp->act_scr, &snapshot_area);
lv_area_increase(&snapshot_area, ext_size, ext_size);

lv_layer_t layer;
lv_memzero(&layer, sizeof(layer));

layer.draw_buf = draw_buf;
layer.buf_area.x1 = snapshot_area.x1;
layer.buf_area.y1 = snapshot_area.y1;
layer.buf_area.x2 = snapshot_area.x1 + w - 1;
layer.buf_area.y2 = snapshot_area.y1 + h - 1;
layer.color_format = cf;
layer._clip_area = snapshot_area;

lv_display_t * disp_old = _lv_refr_get_disp_refreshing();
lv_display_t * disp_new = disp;//lv_obj_get_display(obj);
lv_layer_t * layer_old = disp_new->layer_head;
disp_new->layer_head = &layer;

_lv_refr_set_disp_refreshing(disp_new);

lv_obj_redraw(&layer, disp_new->bottom_layer);
lv_obj_redraw(&layer, disp_new->act_scr);
lv_obj_redraw(&layer, disp_new->top_layer);
lv_obj_redraw(&layer, disp_new->sys_layer);

while(layer.draw_task_head) {
    lv_draw_dispatch_wait_for_request();
    lv_draw_dispatch_layer(NULL, &layer);
}

disp_new->layer_head = layer_old;
_lv_refr_set_disp_refreshing(disp_old);

return LV_RESULT_OK;

}

lv_draw_buf_t * lv_screenshot_take(lv_display_t * disp, lv_color_format_t cf)
{
LV_ASSERT_NULL(disp);
lv_draw_buf_t * draw_buf = lv_snapshot_create_draw_buf(disp->act_scr, cf);
if(draw_buf == NULL) return NULL;

if(lv_screenshot_take_to_draw_buf(disp, cf, draw_buf) != LV_RESULT_OK) {
    lv_draw_buf_destroy(draw_buf);
    return NULL;
}

return draw_buf;

}

hussamaldean · April 23, 2024, 11:55am

Can be ported to embedded systems?
I have STM32H757 that supports LvGL and SD-Card.

MacDragon · April 23, 2024, 12:04pm

Embedded RAM scarce systems will definitely be a challenge due to it allocating a full frame buffer to capture into, I think they such would have to be captured via a flush_cb hook with a hook to write out partial frame writes out to sd card.

hussamaldean · April 23, 2024, 12:26pm

My board has enough ram to store the entire buffer (externally).

caldicot · May 20, 2024, 10:22am

Hi,

I am quite new to lvgl. I’ve setup the lv_platformio sample project with latest lvgl 9.1 and running it in the simulator. This is working fine …

Now, I would like to add the possibility to save screenshots of the shown UI to my local file system.
I came across this thread and it’s not quite clear to me how to integrate it.

I’ve added a new screenshot.h file and put the code from @MacDragon into it.

#ifndef SCREENSHOT_H
#define SCREENSHOT_H

#include "lvgl.h"
#include "../.pio/libdeps/emulator_64bits/lvgl/src/display/lv_display_private.h"

lv_result_t lv_screenshot_take_to_draw_buf(lv_display_t *disp, lv_color_format_t cf, lv_draw_buf_t *draw_buf)
{
    LV_ASSERT_NULL(disp);
    LV_ASSERT_NULL(draw_buf);
    lv_result_t res;

    switch (cf)
    {
    case LV_COLOR_FORMAT_RGB565:
    case LV_COLOR_FORMAT_RGB888:
    case LV_COLOR_FORMAT_XRGB8888:
    case LV_COLOR_FORMAT_ARGB8888:
        break;
    default:
        LV_LOG_WARN("Not supported color format");
        return LV_RESULT_INVALID;
    }

    res = lv_snapshot_reshape_draw_buf(disp->act_scr, draw_buf);
    if (res != LV_RESULT_OK)
        return res;

    /* clear draw buffer*/
    lv_draw_buf_clear(draw_buf, NULL);

    lv_area_t snapshot_area;
    int32_t w = draw_buf->header.w;
    int32_t h = draw_buf->header.h;
    int32_t ext_size = _lv_obj_get_ext_draw_size(disp->act_scr);
    lv_obj_get_coords(disp->act_scr, &snapshot_area);
    lv_area_increase(&snapshot_area, ext_size, ext_size);

    lv_layer_t layer;
    lv_memzero(&layer, sizeof(layer));

    layer.draw_buf = draw_buf;
    layer.buf_area.x1 = snapshot_area.x1;
    layer.buf_area.y1 = snapshot_area.y1;
    layer.buf_area.x2 = snapshot_area.x1 + w - 1;
    layer.buf_area.y2 = snapshot_area.y1 + h - 1;
    layer.color_format = cf;
    layer._clip_area = snapshot_area;

    lv_display_t *disp_old = _lv_refr_get_disp_refreshing();
    lv_display_t *disp_new = disp; // lv_obj_get_display(obj);
    lv_layer_t *layer_old = disp_new->layer_head;
    disp_new->layer_head = &layer;

    _lv_refr_set_disp_refreshing(disp_new);

    lv_obj_redraw(&layer, disp_new->bottom_layer);
    lv_obj_redraw(&layer, disp_new->act_scr);
    lv_obj_redraw(&layer, disp_new->top_layer);
    lv_obj_redraw(&layer, disp_new->sys_layer);

    while (layer.draw_task_head)
    {
        lv_draw_dispatch_wait_for_request();
        lv_draw_dispatch_layer(NULL, &layer);
    }

    disp_new->layer_head = layer_old;
    _lv_refr_set_disp_refreshing(disp_old);

    return LV_RESULT_OK;
}

lv_draw_buf_t *lv_screenshot_take(lv_display_t *disp, lv_color_format_t cf)
{
    LV_ASSERT_NULL(disp);
    lv_draw_buf_t *draw_buf = lv_snapshot_create_draw_buf(disp->act_scr, cf);
    if (draw_buf == NULL)
        return NULL;

    if (lv_screenshot_take_to_draw_buf(disp, cf, draw_buf) != LV_RESULT_OK)
    {
        lv_draw_buf_destroy(draw_buf);
        return NULL;
    }

    return draw_buf;
}

#endif

I’ve also added the save_as_bmp.c/h files from @100ask project.

For now, I just want to make it work and save the first rendered image.
So I modified the hal_loop, but the simulator crashes when the screenshot should be taken.
I do not See any error message …

static int i = 0;

void hal_loop(void)
{
    Uint32 lastTick = SDL_GetTicks();
    while(1) {
        SDL_Delay(5);
        Uint32 current = SDL_GetTicks();
        lv_tick_inc(current - lastTick); // Update the tick timer. Tick is new for LVGL 9
        lastTick = current;
        lv_timer_handler(); // Update the UI-

        if (i == 0)
        {
            LV_LOG_INFO("test");
            lv_draw_buf_t *buff = lv_screenshot_take(lv_disp_get_default(), LV_COLOR_FORMAT_RGB565);
            save_as_bmp_file(buff->data, buff->header.w, buff->header.h, 24, "/Users/ph/Downloads/test.png");
            i = 1;
        }
    }
}

Could someone please guide me through?
Thanks

100ask · May 21, 2024, 1:11am

After opening the log module, try again: https://github.com/lvgl/lvgl/blob/release/v9.1/lv_conf_template.h#L211

caldicot · May 21, 2024, 5:32am

Thanks for your reply, @100ask

I enabled logging, but not sure if we get some insights.

build_flags = 
	${env.build_flags}
	-D LV_USE_LOG=1
	-D LV_LOG_LEVEL=LV_LOG_LEVEL_TRACE
	-D LV_LOG_PRINTF=1

When LV_LOG_LEVEL_INFO is set, there are no logs.
The simulator crashes and that’s it.
Then I set log level trace and the following output is shown.

[Trace] (0.121, +0)      lv_free: freeing 0x104af5168 lv_mem.c:121
[Trace] (0.121, +0)      lv_malloc: allocating 6 bytes lv_mem.c:64
[Trace] (0.121, +0)      lv_malloc: allocated at 0x104af5168 lv_mem.c:88
[Trace] (0.121, +0)      lv_realloc: reallocating 0x104af5470 with 36 size lv_mem.c:130
[Trace] (0.121, +0)      lv_realloc: reallocated at 0x104af5470 lv_mem.c:146
[Trace] (0.121, +0)      event_send_core: Sending event 45 to 0x104af5338 with 0x0 param lv_obj_event.c:343
[Trace] (0.121, +0)      lv_realloc: reallocating 0x104af5470 with 45 size lv_mem.c:130
[Trace] (0.121, +0)      lv_realloc: reallocated at 0x104af5470 lv_mem.c:146
[Trace] (0.126, +5)      lv_timer_handler: begin lv_timer.c:65
[Trace] (0.126, +0)      lv_timer_exec: calling timer callback: 0x1049b3b40 lv_timer.c:298
[Trace] (0.126, +0)      _lv_display_refr_timer: begin lv_refr.c:327
[Trace] (0.126, +0)      lv_obj_update_layout: Layout update begin lv_obj_pos.c:301
[Trace] (0.126, +0)      event_send_core: Sending event 47 to 0x104af5338 with 0x16b466360 param lv_obj_event.c:343
[Trace] (0.126, +0)      event_send_core: Sending event 47 to 0x104af5338 with 0x16b466380 param lv_obj_event.c:343
[Trace] (0.126, +0)      event_send_core: Sending event 44 to 0x104af5338 with 0x16b466470 param lv_obj_event.c:343
[Trace] (0.126, +0)      event_send_core: Sending event 37 to 0x104af4fe0 with 0x104af5338 param lv_obj_event.c:343
[Trace] (0.126, +0)      event_send_core: Sending event 47 to 0x104af4fe0 with 0x16b466210 param lv_obj_event.c:343
[Trace] (0.126, +0)      event_send_core: Sending event 47 to 0x104af4fe0 with 0x16b466210 param lv_obj_event.c:343
[Trace] (0.126, +0)      event_send_core: Sending event 22 to 0x104af5338 with 0x16b4663f0 param lv_obj_event.c:343
[Trace] (0.126, +0)      event_send_core: Sending event 37 to 0x104af4fe0 with 0x104af5338 param lv_obj_event.c:343
[Trace] (0.126, +0)      event_send_core: Sending event 47 to 0x104af4fe0 with 0x16b4661e0 param lv_obj_event.c:343
[Trace] (0.126, +0)      event_send_core: Sending event 47 to 0x104af4fe0 with 0x16b4661e0 param lv_obj_event.c:343
[Trace] (0.126, +0)      event_send_core: Sending event 47 to 0x104af5338 with 0x16b466410 param lv_obj_event.c:343
[Trace] (0.126, +0)      event_send_core: Sending event 47 to 0x104af5338 with 0x16b466410 param lv_obj_event.c:343
[Trace] (0.126, +0)      lv_obj_update_layout: Layout update end lv_obj_pos.c:304
[Trace] (0.126, +0)      lv_obj_update_layout: Layout update begin lv_obj_pos.c:301
[Trace] (0.126, +0)      event_send_core: Sending event 47 to 0x104af5338 with 0x16b466360 param lv_obj_event.c:343
[Trace] (0.126, +0)      event_send_core: Sending event 47 to 0x104af5338 with 0x16b466380 param lv_obj_event.c:343
[Trace] (0.126, +0)      lv_obj_update_layout: Layout update end lv_obj_pos.c:304
[Trace] (0.126, +0)      lv_obj_update_layout: Layout update begin lv_obj_pos.c:301
[Trace] (0.126, +0)      lv_obj_update_layout: Layout update end lv_obj_pos.c:304
[Trace] (0.126, +0)      lv_obj_update_layout: Layout update begin lv_obj_pos.c:301
[Trace] (0.126, +0)      lv_obj_update_layout: Layout update end lv_obj_pos.c:304
[Trace] (0.126, +0)      lv_obj_update_layout: Layout update begin lv_obj_pos.c:301
[Trace] (0.126, +0)      lv_obj_update_layout: Layout update end lv_obj_pos.c:304
[Trace] (0.126, +0)      wait_for_flushing: begin lv_refr.c:1076
[Trace] (0.126, +0)      wait_for_flushing: end lv_refr.c:1090
[Trace] (0.126, +0)      event_send_core: Sending event 21 to 0x104af33e0 with 0x16b466490 param lv_obj_event.c:343
[Trace] (0.126, +0)      event_send_core: Sending event 23 to 0x104af33e0 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.126, +0)      event_send_core: Sending event 24 to 0x104af33e0 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.126, +0)      lv_malloc_zeroed: allocating 96 bytes lv_mem.c:94
[Trace] (0.126, +0)      lv_malloc_zeroed: allocated at 0x104af54a8 lv_mem.c:115
[Trace] (0.126, +0)      lv_malloc: allocating 72 bytes lv_mem.c:64
[Trace] (0.126, +0)      lv_malloc: allocated at 0x104af5510 lv_mem.c:88
[Trace] (0.127, +1)      event_send_core: Sending event 25 to 0x104af33e0 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 23 to 0x104af3bf8 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 24 to 0x104af3bf8 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 25 to 0x104af3bf8 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 23 to 0x104af42f0 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 24 to 0x104af42f0 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      lv_malloc_zeroed: allocating 96 bytes lv_mem.c:94
[Trace] (0.127, +0)      lv_malloc_zeroed: allocated at 0x104af5560 lv_mem.c:115
[Trace] (0.127, +0)      lv_malloc: allocating 72 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af55c8 lv_mem.c:88
[Trace] (0.127, +0)      lv_free: freeing 0x104af5510 lv_mem.c:121
[Trace] (0.127, +0)      lv_free: freeing 0x104af54a8 lv_mem.c:121
[Trace] (0.127, +0)      event_send_core: Sending event 25 to 0x104af42f0 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 26 to 0x104af42f0 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 27 to 0x104af42f0 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 47 to 0x104af42f0 with 0x16b4652e0 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 47 to 0x104af42f0 with 0x16b4652e0 param lv_obj_event.c:343
[Trace] (0.127, +0)      lv_malloc_zeroed: allocating 96 bytes lv_mem.c:94
[Trace] (0.127, +0)      lv_malloc_zeroed: allocated at 0x104af54a8 lv_mem.c:115
[Trace] (0.127, +0)      lv_malloc: allocating 72 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af5510 lv_mem.c:88
[Trace] (0.127, +0)      lv_free: freeing 0x104af55c8 lv_mem.c:121
[Trace] (0.127, +0)      lv_free: freeing 0x104af5560 lv_mem.c:121
[Trace] (0.127, +0)      lv_malloc_zeroed: allocating 96 bytes lv_mem.c:94
[Trace] (0.127, +0)      lv_malloc_zeroed: allocated at 0x104af5560 lv_mem.c:115
[Trace] (0.127, +0)      lv_malloc: allocating 72 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af55c8 lv_mem.c:88
[Trace] (0.127, +0)      lv_free: freeing 0x104af5510 lv_mem.c:121
[Trace] (0.127, +0)      lv_free: freeing 0x104af54a8 lv_mem.c:121
[Trace] (0.127, +0)      lv_malloc_zeroed: allocating 96 bytes lv_mem.c:94
[Trace] (0.127, +0)      lv_malloc_zeroed: allocated at 0x104af54a8 lv_mem.c:115
[Trace] (0.127, +0)      lv_malloc: allocating 64 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af5510 lv_mem.c:88
[Trace] (0.127, +0)      lv_free: freeing 0x104af55c8 lv_mem.c:121
[Trace] (0.127, +0)      lv_free: freeing 0x104af5560 lv_mem.c:121
[Trace] (0.127, +0)      event_send_core: Sending event 28 to 0x104af42f0 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 23 to 0x104af4358 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 24 to 0x104af4358 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      lv_malloc_zeroed: allocating 96 bytes lv_mem.c:94
[Trace] (0.127, +0)      lv_malloc_zeroed: allocated at 0x104af5560 lv_mem.c:115
[Trace] (0.127, +0)      lv_malloc: allocating 72 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af55c8 lv_mem.c:88
[Trace] (0.127, +0)      lv_free: freeing 0x104af5510 lv_mem.c:121
[Trace] (0.127, +0)      lv_free: freeing 0x104af54a8 lv_mem.c:121
[Trace] (0.127, +0)      event_send_core: Sending event 25 to 0x104af4358 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 26 to 0x104af4358 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 27 to 0x104af4358 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 47 to 0x104af4358 with 0x16b4652e0 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 47 to 0x104af4358 with 0x16b4652e0 param lv_obj_event.c:343
[Trace] (0.127, +0)      lv_malloc_zeroed: allocating 96 bytes lv_mem.c:94
[Trace] (0.127, +0)      lv_malloc_zeroed: allocated at 0x104af54a8 lv_mem.c:115
[Trace] (0.127, +0)      lv_malloc: allocating 72 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af5510 lv_mem.c:88
[Trace] (0.127, +0)      lv_free: freeing 0x104af55c8 lv_mem.c:121
[Trace] (0.127, +0)      lv_free: freeing 0x104af5560 lv_mem.c:121
[Trace] (0.127, +0)      event_send_core: Sending event 28 to 0x104af4358 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 23 to 0x104af4448 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 24 to 0x104af4448 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      lv_malloc_zeroed: allocating 96 bytes lv_mem.c:94
[Trace] (0.127, +0)      lv_malloc_zeroed: allocated at 0x104af5560 lv_mem.c:115
[Trace] (0.127, +0)      lv_malloc: allocating 72 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af55c8 lv_mem.c:88
[Trace] (0.127, +0)      lv_free: freeing 0x104af5510 lv_mem.c:121
[Trace] (0.127, +0)      lv_free: freeing 0x104af54a8 lv_mem.c:121
[Trace] (0.127, +0)      event_send_core: Sending event 25 to 0x104af4448 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 26 to 0x104af4448 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 27 to 0x104af4448 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 47 to 0x104af4448 with 0x16b4652e0 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 47 to 0x104af4448 with 0x16b4652e0 param lv_obj_event.c:343
[Trace] (0.127, +0)      lv_malloc_zeroed: allocating 96 bytes lv_mem.c:94
[Trace] (0.127, +0)      lv_malloc_zeroed: allocated at 0x104af54a8 lv_mem.c:115
[Trace] (0.127, +0)      lv_malloc: allocating 72 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af5510 lv_mem.c:88
[Trace] (0.127, +0)      lv_free: freeing 0x104af55c8 lv_mem.c:121
[Trace] (0.127, +0)      lv_free: freeing 0x104af5560 lv_mem.c:121
[Trace] (0.127, +0)      lv_malloc_zeroed: allocating 96 bytes lv_mem.c:94
[Trace] (0.127, +0)      lv_malloc_zeroed: allocated at 0x104af5560 lv_mem.c:115
[Trace] (0.127, +0)      lv_malloc: allocating 64 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af55c8 lv_mem.c:88
[Trace] (0.127, +0)      lv_free: freeing 0x104af5510 lv_mem.c:121
[Trace] (0.127, +0)      lv_free: freeing 0x104af54a8 lv_mem.c:121
[Trace] (0.127, +0)      event_send_core: Sending event 28 to 0x104af4448 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 23 to 0x104af4538 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 24 to 0x104af4538 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      lv_malloc_zeroed: allocating 96 bytes lv_mem.c:94
[Trace] (0.127, +0)      lv_malloc_zeroed: allocated at 0x104af54a8 lv_mem.c:115
[Trace] (0.127, +0)      lv_malloc: allocating 72 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af5510 lv_mem.c:88
[Trace] (0.127, +0)      lv_free: freeing 0x104af55c8 lv_mem.c:121
[Trace] (0.127, +0)      lv_free: freeing 0x104af5560 lv_mem.c:121
[Trace] (0.127, +0)      event_send_core: Sending event 25 to 0x104af4538 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 26 to 0x104af4538 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 27 to 0x104af4538 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 47 to 0x104af4538 with 0x16b4652e0 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 47 to 0x104af4538 with 0x16b4652e0 param lv_obj_event.c:343
[Trace] (0.127, +0)      lv_malloc_zeroed: allocating 96 bytes lv_mem.c:94
[Trace] (0.127, +0)      lv_malloc_zeroed: allocated at 0x104af5560 lv_mem.c:115
[Trace] (0.127, +0)      lv_malloc: allocating 72 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af55c8 lv_mem.c:88
[Trace] (0.127, +0)      lv_free: freeing 0x104af5510 lv_mem.c:121
[Trace] (0.127, +0)      lv_free: freeing 0x104af54a8 lv_mem.c:121
[Trace] (0.127, +0)      lv_malloc_zeroed: allocating 96 bytes lv_mem.c:94
[Trace] (0.127, +0)      lv_malloc_zeroed: allocated at 0x104af54a8 lv_mem.c:115
[Trace] (0.127, +0)      lv_malloc: allocating 64 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af5510 lv_mem.c:88
[Trace] (0.127, +0)      lv_free: freeing 0x104af55c8 lv_mem.c:121
[Trace] (0.127, +0)      lv_free: freeing 0x104af5560 lv_mem.c:121
[Trace] (0.127, +0)      event_send_core: Sending event 28 to 0x104af4538 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 23 to 0x104af4758 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 24 to 0x104af4758 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      lv_malloc_zeroed: allocating 96 bytes lv_mem.c:94
[Trace] (0.127, +0)      lv_malloc_zeroed: allocated at 0x104af5560 lv_mem.c:115
[Trace] (0.127, +0)      lv_malloc: allocating 72 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af55c8 lv_mem.c:88
[Trace] (0.127, +0)      lv_free: freeing 0x104af5510 lv_mem.c:121
[Trace] (0.127, +0)      lv_free: freeing 0x104af54a8 lv_mem.c:121
[Trace] (0.127, +0)      lv_malloc: allocating 16 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af54a8 lv_mem.c:88
[Trace] (0.127, +0)      lv_malloc: allocating 54 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af54c8 lv_mem.c:88
[Trace] (0.127, +0)      lv_malloc_zeroed: allocating 144 bytes lv_mem.c:94
[Trace] (0.127, +0)      lv_malloc_zeroed: allocated at 0x104af5618 lv_mem.c:115
[Trace] (0.127, +0)      lv_free: freeing 0x104af5618 lv_mem.c:121
[Trace] (0.127, +0)      lv_free: freeing 0x104af54a8 lv_mem.c:121
[Trace] (0.127, +0)      event_send_core: Sending event 25 to 0x104af4758 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 26 to 0x104af4758 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 27 to 0x104af4758 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 28 to 0x104af4758 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 23 to 0x104af47d0 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 24 to 0x104af47d0 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      lv_malloc_zeroed: allocating 96 bytes lv_mem.c:94
[Trace] (0.127, +0)      lv_malloc_zeroed: allocated at 0x104af5618 lv_mem.c:115
[Trace] (0.127, +0)      lv_malloc: allocating 72 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af5508 lv_mem.c:88
[Trace] (0.127, +0)      lv_free: freeing 0x104af55c8 lv_mem.c:121
[Trace] (0.127, +0)      lv_free: freeing 0x104af5560 lv_mem.c:121
[Trace] (0.127, +0)      lv_malloc: allocating 16 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af54a8 lv_mem.c:88
[Trace] (0.127, +0)      lv_free: freeing 0x104af54a8 lv_mem.c:121
[Trace] (0.127, +0)      event_send_core: Sending event 25 to 0x104af47d0 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 26 to 0x104af47d0 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 27 to 0x104af47d0 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 28 to 0x104af47d0 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 23 to 0x104af4920 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 24 to 0x104af4920 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      lv_malloc_zeroed: allocating 96 bytes lv_mem.c:94
[Trace] (0.127, +0)      lv_malloc_zeroed: allocated at 0x104af5560 lv_mem.c:115
[Trace] (0.127, +0)      lv_malloc: allocating 72 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af55c8 lv_mem.c:88
[Trace] (0.127, +0)      lv_free: freeing 0x104af5508 lv_mem.c:121
[Trace] (0.127, +0)      lv_free: freeing 0x104af5618 lv_mem.c:121
[Trace] (0.127, +0)      lv_malloc: allocating 16 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af54a8 lv_mem.c:88
[Trace] (0.127, +0)      lv_free: freeing 0x104af54a8 lv_mem.c:121
[Trace] (0.127, +0)      event_send_core: Sending event 25 to 0x104af4920 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 26 to 0x104af4920 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 27 to 0x104af4920 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 28 to 0x104af4920 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 23 to 0x104af4a78 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 24 to 0x104af4a78 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      lv_malloc_zeroed: allocating 96 bytes lv_mem.c:94
[Trace] (0.127, +0)      lv_malloc_zeroed: allocated at 0x104af5618 lv_mem.c:115
[Trace] (0.127, +0)      lv_malloc: allocating 72 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af5508 lv_mem.c:88
[Trace] (0.127, +0)      lv_free: freeing 0x104af55c8 lv_mem.c:121
[Trace] (0.127, +0)      lv_free: freeing 0x104af5560 lv_mem.c:121
[Trace] (0.127, +0)      lv_malloc: allocating 16 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af54a8 lv_mem.c:88
[Trace] (0.127, +0)      lv_free: freeing 0x104af54a8 lv_mem.c:121
[Trace] (0.127, +0)      event_send_core: Sending event 25 to 0x104af4a78 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 26 to 0x104af4a78 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 27 to 0x104af4a78 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 28 to 0x104af4a78 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 23 to 0x104af4bd8 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 24 to 0x104af4bd8 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      lv_malloc_zeroed: allocating 96 bytes lv_mem.c:94
[Trace] (0.127, +0)      lv_malloc_zeroed: allocated at 0x104af5560 lv_mem.c:115
[Trace] (0.127, +0)      lv_malloc: allocating 72 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af55c8 lv_mem.c:88
[Trace] (0.127, +0)      lv_free: freeing 0x104af5508 lv_mem.c:121
[Trace] (0.127, +0)      lv_free: freeing 0x104af5618 lv_mem.c:121
[Trace] (0.127, +0)      lv_malloc: allocating 14 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af54a8 lv_mem.c:88
[Trace] (0.127, +0)      lv_malloc: allocating 48 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af5508 lv_mem.c:88
[Trace] (0.127, +0)      lv_malloc_zeroed: allocating 128 bytes lv_mem.c:94
[Trace] (0.127, +0)      lv_malloc_zeroed: allocated at 0x104af5618 lv_mem.c:115
[Trace] (0.127, +0)      lv_free: freeing 0x104af5618 lv_mem.c:121
[Trace] (0.127, +0)      lv_free: freeing 0x104af54a8 lv_mem.c:121
[Trace] (0.127, +0)      event_send_core: Sending event 25 to 0x104af4bd8 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 26 to 0x104af4bd8 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 27 to 0x104af4bd8 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      lv_malloc_zeroed: allocating 96 bytes lv_mem.c:94
[Trace] (0.127, +0)      lv_malloc_zeroed: allocated at 0x104af5618 lv_mem.c:115
[Trace] (0.127, +0)      lv_malloc: allocating 64 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af5680 lv_mem.c:88
[Trace] (0.127, +0)      lv_free: freeing 0x104af55c8 lv_mem.c:121
[Trace] (0.127, +0)      lv_free: freeing 0x104af5560 lv_mem.c:121
[Trace] (0.127, +0)      lv_malloc: allocating 16 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af54a8 lv_mem.c:88
[Trace] (0.127, +0)      lv_malloc: allocating 42 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af5540 lv_mem.c:88
[Trace] (0.127, +0)      lv_malloc_zeroed: allocating 112 bytes lv_mem.c:94
[Trace] (0.127, +0)      lv_malloc_zeroed: allocated at 0x104af5578 lv_mem.c:115
[Trace] (0.127, +0)      lv_free: freeing 0x104af5578 lv_mem.c:121
[Trace] (0.127, +0)      lv_free: freeing 0x104af54a8 lv_mem.c:121
[Trace] (0.127, +0)      event_send_core: Sending event 28 to 0x104af4bd8 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 23 to 0x104af4e10 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 24 to 0x104af4e10 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      lv_malloc_zeroed: allocating 96 bytes lv_mem.c:94
[Trace] (0.127, +0)      lv_malloc_zeroed: allocated at 0x104af5578 lv_mem.c:115
[Trace] (0.127, +0)      lv_malloc: allocating 120 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af56c8 lv_mem.c:88
[Trace] (0.127, +0)      lv_free: freeing 0x104af5680 lv_mem.c:121
[Trace] (0.127, +0)      lv_free: freeing 0x104af5618 lv_mem.c:121
[Trace] (0.127, +0)      lv_malloc_zeroed: allocating 32 bytes lv_mem.c:94
[Trace] (0.127, +0)      lv_malloc_zeroed: allocated at 0x104af55e0 lv_mem.c:115
[Trace] (0.127, +0)      lv_malloc: allocating 211 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af5748 lv_mem.c:88
[Trace] (0.127, +0)      lv_draw_buf_reshape: Draw buf too small for new shape lv_draw_buf.c:262
[Trace] (0.127, +0)      lv_free: freeing 0x104af5748 lv_mem.c:121
[Trace] (0.127, +0)      lv_free: freeing 0x104af55e0 lv_mem.c:121
[Trace] (0.127, +0)      lv_malloc_zeroed: allocating 32 bytes lv_mem.c:94
[Trace] (0.127, +0)      lv_malloc_zeroed: allocated at 0x104af55e0 lv_mem.c:115
[Trace] (0.127, +0)      lv_malloc: allocating 227 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af5748 lv_mem.c:88
[Trace] (0.127, +0)      lv_draw_buf_reshape: Draw buf too small for new shape lv_draw_buf.c:262
[Trace] (0.127, +0)      lv_free: freeing 0x104af5748 lv_mem.c:121
[Trace] (0.127, +0)      lv_free: freeing 0x104af55e0 lv_mem.c:121
[Trace] (0.127, +0)      lv_malloc_zeroed: allocating 32 bytes lv_mem.c:94
[Trace] (0.127, +0)      lv_malloc_zeroed: allocated at 0x104af55e0 lv_mem.c:115
[Trace] (0.127, +0)      lv_malloc: allocating 243 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af5748 lv_mem.c:88
[Trace] (0.127, +0)      lv_free: freeing 0x104af5748 lv_mem.c:121
[Trace] (0.127, +0)      lv_free: freeing 0x104af55e0 lv_mem.c:121
[Trace] (0.127, +0)      event_send_core: Sending event 25 to 0x104af4e10 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 26 to 0x104af4e10 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 27 to 0x104af4e10 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 47 to 0x104af4e10 with 0x16b465220 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 47 to 0x104af4e10 with 0x16b465220 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 28 to 0x104af4e10 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 26 to 0x104af3bf8 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 27 to 0x104af3bf8 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 28 to 0x104af3bf8 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 23 to 0x104af3d68 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 24 to 0x104af3d68 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 25 to 0x104af3d68 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 23 to 0x104af3fc0 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 24 to 0x104af3fc0 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      lv_malloc_zeroed: allocating 96 bytes lv_mem.c:94
[Trace] (0.127, +0)      lv_malloc_zeroed: allocated at 0x104af55e0 lv_mem.c:115
[Trace] (0.127, +0)      lv_malloc: allocating 120 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af5648 lv_mem.c:88
[Trace] (0.127, +0)      lv_free: freeing 0x104af56c8 lv_mem.c:121
[Trace] (0.127, +0)      lv_free: freeing 0x104af5578 lv_mem.c:121
[Trace] (0.127, +0)      lv_malloc_zeroed: allocating 32 bytes lv_mem.c:94
[Trace] (0.127, +0)      lv_malloc_zeroed: allocated at 0x104af5578 lv_mem.c:115
[Trace] (0.127, +0)      lv_malloc: allocating 231 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af56c8 lv_mem.c:88
[Trace] (0.127, +0)      lv_draw_buf_reshape: Draw buf too small for new shape lv_draw_buf.c:262
[Trace] (0.127, +0)      lv_free: freeing 0x104af56c8 lv_mem.c:121
[Trace] (0.127, +0)      lv_free: freeing 0x104af5578 lv_mem.c:121
[Trace] (0.127, +0)      lv_malloc_zeroed: allocating 32 bytes lv_mem.c:94
[Trace] (0.127, +0)      lv_malloc_zeroed: allocated at 0x104af5578 lv_mem.c:115
[Trace] (0.127, +0)      lv_malloc: allocating 243 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af56c8 lv_mem.c:88
[Trace] (0.127, +0)      lv_free: freeing 0x104af56c8 lv_mem.c:121
[Trace] (0.127, +0)      lv_free: freeing 0x104af5578 lv_mem.c:121
[Trace] (0.127, +0)      event_send_core: Sending event 25 to 0x104af3fc0 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 26 to 0x104af3fc0 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 27 to 0x104af3fc0 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 47 to 0x104af3fc0 with 0x16b465220 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 47 to 0x104af3fc0 with 0x16b465220 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 28 to 0x104af3fc0 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 23 to 0x104af40d0 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 24 to 0x104af40d0 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      lv_malloc_zeroed: allocating 96 bytes lv_mem.c:94
[Trace] (0.127, +0)      lv_malloc_zeroed: allocated at 0x104af5578 lv_mem.c:115
[Trace] (0.127, +0)      lv_malloc: allocating 120 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af56c8 lv_mem.c:88
[Trace] (0.127, +0)      lv_free: freeing 0x104af5648 lv_mem.c:121
[Trace] (0.127, +0)      lv_free: freeing 0x104af55e0 lv_mem.c:121
[Trace] (0.127, +0)      lv_malloc_zeroed: allocating 32 bytes lv_mem.c:94
[Trace] (0.127, +0)      lv_malloc_zeroed: allocated at 0x104af55e0 lv_mem.c:115
[Trace] (0.127, +0)      lv_malloc: allocating 243 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af5748 lv_mem.c:88
[Trace] (0.127, +0)      lv_free: freeing 0x104af5748 lv_mem.c:121
[Trace] (0.127, +0)      lv_free: freeing 0x104af55e0 lv_mem.c:121
[Trace] (0.127, +0)      event_send_core: Sending event 25 to 0x104af40d0 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 26 to 0x104af40d0 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 27 to 0x104af40d0 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 47 to 0x104af40d0 with 0x16b465220 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 47 to 0x104af40d0 with 0x16b465220 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 28 to 0x104af40d0 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 23 to 0x104af4fe0 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 24 to 0x104af4fe0 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 25 to 0x104af4fe0 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 23 to 0x104af50a0 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      event_send_core: Sending event 24 to 0x104af50a0 with 0x104af2008 param lv_obj_event.c:343
[Trace] (0.127, +0)      lv_malloc: allocating 136 bytes lv_mem.c:64
[Trace] (0.127, +0)      lv_malloc: allocated at 0x104af55e0 lv_mem.c:88
[Trace] (0.127, +0)      lv_malloc_zeroed: allocating 96 bytes lv_mem.c:94
[Trace] (0.127, +0)      lv_malloc_zeroed: allocated at 0x104af5748 lv_mem.c:115
[Trace] (0.127, +0)      lv_free: freeing 0x104af56c8 lv_mem.c:121
[Trace] (0.127, +0)      lv_free: freeing 0x104af5578 lv_mem.c:121
[Trace] (0.127, +0)      lv_malloc_zeroed: allocating 104 bytes lv_mem.c:94
*** [execute] Error -11
========================================================================================================= [FAILED] Took 4.30 seconds =========================================================================================================

Environment      Status    Duration
---------------  --------  ------------
emulator_64bits  FAILED    00:00:04.302
==================================================================================================== 1 failed, 0 succeeded in 00:00:04.302 ====================================================================================================

I was forced to reduce the log output, as the amount of chars are limited.

In either case, the simulator crashes and macOS brings up the unexpected error message.

100ask · May 21, 2024, 6:16am

It seems that the program did not run to this point, so there should be a problem with the simulator itself:

Can you run LVGL built-in examples normally?

caldicot · May 21, 2024, 6:36am

I never tested the demo widgets, but built my custom UI.
I am pretty sure, that it is working. When I comment the screenshot part in the hal_loop the simulator is starting and the expected UI is rendering.
Only when the if is true and the code is executed, it crashes as shown.

Now, I just commented the save_as_bmp_file function and then it runs, too.
It seems that saving the buff is the problem.

The bmp code is copied from your project.
Could it be a problem with macOS and accessing the Downloads folder from a unknown app?

100ask · May 22, 2024, 2:10am

It should be a problem with the macOS system permissions. I usually do it in a Windows or Ubuntu environment.

caldicot · May 22, 2024, 5:32am

I digged deeper and found out, that the lv_draw_buf_t *buff is NULL.
I commented the save_as_bmp_file as this will result in a segmentation fault and the logs are gone …

I found these log statements:

[Info]  (0.453, +338)    hal_loop: test app_hal.c:63
[Info]  (0.453, +0)      lv_malloc: couldn't allocate memory (153603 bytes) lv_mem.c:73
[Info]  (0.453, +0)      lv_malloc: used: 15776 ( 13 %), frag:   0 %, biggest free: 110896 lv_mem.c:79
[Warn]  (0.453, +0)      lv_draw_buf_create: No memory: 320x240, cf: 18, stride: 640, 153600Byte,  lv_draw_buf.c:216
[Info]  (0.453, +0)      hal_loop: NULL app_hal.c:66

It seems, that it was not possible to allocate memory for the buffer.
I saw these two configurations in platform.io:

	-D LV_MEM_CUSTOM=1
	-D LV_MEM_SIZE="(128U * 1024U)"

I doubled the memory to 256U and at least it’s not crashing
Though, I am still unable to write the bmp to the file system.

[Warn]  (0.441, +1)      lv_fs_open: Can't open file (/Users/ph/Downloads/test.bmp): unknown driver letter lv_fs.c:75
[User]  (0.441, +0)      save_as_bmp_file: Can't create output file /Users/ph/Downloads/test.bmp save_as_bmp.c:86

I found out, that I need to enable FS

  -D LV_USE_FS_STDIO=1
  -D LV_FS_STDIO_LETTER=65 ;A <-- not sure how to define a char?

It’s better, but still not completely working.
The simulator comes up and shows the expected UI.

Though, the saved bmp is somehow damaged.
test

Seems to be a problem with the screenshot itself. Can you think of a reason, why this is happening?

EDIT:
Tried to save the screenshot as png. After increasing mem size heavily, I’ve got a similar result
test

100ask · May 22, 2024, 6:12am

Great!

Please check LV_COLOR_DEPTH.

caldicot · May 22, 2024, 6:40am

I switched the LV_COLOR_FORMAT and it’s getting better

lv_draw_buf_t *buff = lv_screenshot_take(lv_disp_get_default(), LV_COLOR_FORMAT_RGB888);

The saved png looks now like this
test

Funnily, the saved bmp is fine
test1

It seems to be a problem with the png encoding.

            lv_draw_buf_t *buff = lv_screenshot_take(lv_disp_get_default(), LV_COLOR_FORMAT_RGB888);
            save_as_bmp_file(buff->data, buff->header.w, buff->header.h, 24, "A:/Users/ph/Downloads/test.bmp");
            save_as_png_file(buff->data, buff->header.w, buff->header.h, 24, "A:/Users/ph/Downloads/test.png");

EDIT:
Saving the screenshot as jpg looks exactly like png