QRCODE display with littlevgl

HI,
I have a project which need to display QRCODE,How can I realize it? do you have any suggest?

I would suggest making your QR code an image and then displaying that with the lv_img object.

I’ve used this library to generate QR code: https://github.com/nayuki/QR-Code-generator
And then used a lv_canvas to display the generated QR code. lv_canvas can have LV_IMG_CF_INDEXED1 color format to save space.

In dev-6.0 there are nice functions to set the palette of the canvas and set its pixels.

In v5.3 you need to manually set the the first 2x4 byte of the buffer to the two color you want to see on the QR code.

Thanks,I will try it.

Thanks for your suggest!

Hi, do you have any example code (or documentation) showing how to use lv_canvas? I am unable to get my QR data displaying as an image (image shows “No Data”) and would like to try using lv_canvas instead.

How did you try it with the image? Probably there is only a small problem with it.

Here’s the basic code:

static const uint8_t img_qrcode_map[] = {
        0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a, 0x00, 0x00, 0x00, 0x0d, 0x49, 0x48, 0x44, 0x52, 
        0x00, 0x00, 0x00, 0x8c, 0x00, 0x00, 0x00, 0x8c, 0x08, 0x02, 0x00, 0x00, 0x00, 0x21, 0xa2, 0xd6, 
        0x69, 0x00, 0x00, 0x02, 0x86, 0x49, 0x44, 0x41, 0x54, 0x78, 0x9c, 0xed, 0xdd, 0xc1, 0x6e, 0xe3, 
        0x30, 0x0c, 0x00, 0xd1, 0xb8, 0xc8, 0xff, 0xff, 0xb2, 0x7b, 0xeb, 0x45, 0x06, 0x4a, 0x10, 0x24, 
        0xa5, 0x31, 0xe6, 0x1d, 0x17, 0xdb, 0x24, 0xee, 0x40, 0x00, 0x21, 0x57, 0xce, 0x75, 0xdf, 0xf7, 
        0x47, 0x67, 0xfb, 0xd9, 0xfd, 0x01, 0xf4, 0x3f, 0x23, 0x01, 0x18, 0x09, 0xc0, 0x48, 0x00, 0x46, 
        0x02, 0xf8, 0xae, 0xff, 0x74, 0x5d, 0xd7, 0xfc, 0xe7, 0xf8, 0x13, 0x99, 0x36, 0x83, 0x9f, 0x30, 
        0x37, 0xb8, 0x1e, 0x78, 0xf9, 0xae, 0x24, 0x00, 0x23, 0x01, 0x18, 0x09, 0xc0, 0x48, 0x00, 0x46, 
        0x02, 0x78, 0x98, 0xee, 0x56, 0x7d, 0xfb, 0x7b, 0x7b, 0x47, 0xa9, 0xa0, 0xed, 0x97, 0xef, 0x4a, 
        0x02, 0x30, 0x12, 0x80, 0x91, 0x00, 0x8c, 0x04, 0x60, 0x24, 0x80, 0xd0, 0x74, 0xb7, 0xca, 0x4d, 
        0x65, 0x55, 0x9b, 0x69, 0xc1, 0xd7, 0x89, 0x7c, 0xc8, 0xc9, 0xfd, 0xbd, 0xf4, 0x94, 0xe8, 0x4a, 
        0x02, 0x30, 0x12, 0x80, 0x91, 0x00, 0x8c, 0x04, 0x60, 0x24, 0x80, 0xe4, 0x74, 0xb7, 0x57, 0xeb, 
        0x9d, 0xd9, 0x03, 0xb9, 0x92, 0x00, 0x8c, 0x04, 0x60, 0x24, 0x00, 0x23, 0x01, 0x18, 0x09, 0x00, 
        0x39, 0xdd, 0xad, 0x63, 0xdb, 0xe3, 0xbc, 0xd7, 0xb7, 0x77, 0x37, 0xcc, 0x95, 0x04, 0x60, 0x24, 
        0x00, 0x23, 0x01, 0x18, 0x09, 0xc0, 0x48, 0x00, 0xc9, 0xe9, 0x6e, 0xef, 0x50, 0xd4, 0x7a, 0xaf, 
        0x36, 0x62, 0xf8, 0xf2, 0x5d, 0x49, 0x00, 0x46, 0x02, 0x30, 0x12, 0x80, 0x91, 0x00, 0x8c, 0x04, 
        0x10, 0x9a, 0xee, 0x4e, 0x3b, 0xfb, 0x10, 0xdc, 0xbb, 0xab, 0x9a, 0xc1, 0xb6, 0x5f, 0xbe, 0x2b, 
        0x09, 0xc0, 0x48, 0x00, 0x46, 0x02, 0x30, 0x12, 0x80, 0x91, 0x00, 0xae, 0xf3, 0x6f, 0x4d, 0xb6, 
        0x0e, 0x57, 0xe7, 0x5f, 0xfe, 0xc7, 0x95, 0x84, 0x60, 0x24, 0x00, 0x23, 0x01, 0x18, 0x09, 0xc0, 
        0x48, 0x00, 0xa1, 0xe7, 0xdd, 0x05, 0xf7, 0xca, 0x4a, 0xac, 0xef, 0x95, 0x7e, 0xf7, 0xdc, 0x0f, 
        0x4e, 0x5e, 0x5a, 0x90, 0x2b, 0x09, 0xc0, 0x48, 0x00, 0x46, 0x02, 0x30, 0x12, 0x80, 0x91, 0x00, 
        0xca, 0xf6, 0xee, 0x72, 0x33, 0x61, 0xd5, 0xb3, 0x8b, 0x87, 0x9f, 0x91, 0x52, 0xf5, 0x44, 0x94, 
        0xe0, 0x2f, 0xc4, 0x95, 0x04, 0x60, 0x24, 0x00, 0x23, 0x01, 0x18, 0x09, 0xc0, 0x48, 0x00, 0xa3, 
        0x67, 0x66, 0xab, 0xe6, 0xbd, 0xa0, 0xc9, 0x61, 0x32, 0xb7, 0x2b, 0x18, 0xbc, 0x58, 0x57, 0x12, 
        0x80, 0x91, 0x00, 0x8c, 0x04, 0x60, 0x24, 0x00, 0x23, 0x01, 0x18, 0x09, 0x20, 0xb9, 0xc1, 0xda, 
        0xb7, 0x9d, 0x5a, 0xf5, 0xee, 0xc3, 0x5a, 0x8f, 0x4c, 0xbb, 0x92, 0x00, 0x8c, 0x04, 0x60, 0x24, 
        0x00, 0x23, 0x01, 0x18, 0x09, 0x20, 0x34, 0xdd, 0x4d, 0xde, 0x1a, 0x1f, 0xde, 0x60, 0xdd, 0xfb, 
        0xe0, 0x42, 0x6f, 0x9f, 0xbf, 0x87, 0x91, 0x00, 0x8c, 0x04, 0x60, 0x24, 0x00, 0x23, 0x01, 0xbc, 
        0xe4, 0x60, 0xf3, 0xe3, 0x55, 0xf4, 0xfd, 0x09, 0x63, 0xee, 0x75, 0x56, 0x4e, 0x77, 0xef, 0x61, 
        0x24, 0x00, 0x23, 0x01, 0x18, 0x09, 0xc0, 0x48, 0x00, 0x0f, 0xd3, 0xdd, 0xde, 0x67, 0xf0, 0x15, 
        0x7e, 0x3b, 0x6f, 0x6e, 0x83, 0xb1, 0x6a, 0x3b, 0xb1, 0x70, 0x57, 0xd0, 0x95, 0x04, 0x60, 0x24, 
        0x00, 0x23, 0x01, 0x18, 0x09, 0xc0, 0x48, 0x00, 0xa1, 0xa3, 0x2f, 0x93, 0xb7, 0x26, 0x73, 0xff, 
        0xa7, 0xf0, 0x07, 0xab, 0x66, 0xc2, 0xaa, 0x57, 0xfe, 0xb8, 0x92, 0x10, 0x8c, 0x04, 0x60, 0x24, 
        0x00, 0x23, 0x01, 0x18, 0x09, 0x20, 0x79, 0xb0, 0xb9, 0xef, 0x66, 0x65, 0x4e, 0xfa, 0xb1, 0x35, 
        0xad, 0x53, 0x59, 0x15, 0x57, 0x12, 0x80, 0x91, 0x00, 0x8c, 0x04, 0x60, 0x24, 0x00, 0x23, 0x01, 
        0x8c, 0x3e, 0xb6, 0xa6, 0x4f, 0xe1, 0xd7, 0xc5, 0x55, 0xdd, 0xaa, 0x8e, 0x4c, 0x80, 0xde, 0x99, 
        0x7d, 0x0f, 0x23, 0x01, 0x18, 0x09, 0xc0, 0x48, 0x00, 0x46, 0x02, 0x40, 0x4e, 0x77, 0xe9, 0x9d, 
        0xba, 0xbe, 0x63, 0xbc, 0xad, 0x7f, 0xac, 0xe8, 0x4a, 0x02, 0x30, 0x12, 0x80, 0x91, 0x00, 0x8c, 
        0x04, 0x60, 0x24, 0x80, 0xe4, 0x74, 0x37, 0x79, 0xd2, 0x36, 0x7d, 0x63, 0xb4, 0x6a, 0xef, 0x6e, 
        0x3b, 0x57, 0x12, 0x80, 0x91, 0x00, 0x8c, 0x04, 0x60, 0x24, 0x00, 0x23, 0x01, 0x84, 0xa6, 0xbb, 
        0xbd, 0xa7, 0x68, 0x0b, 0xbf, 0x9c, 0x78, 0xef, 0xe9, 0x57, 0xbf, 0x50, 0xe4, 0xcd, 0x8c, 0x04, 
        0x60, 0x24, 0x00, 0x23, 0x01, 0x18, 0x09, 0x00, 0xf0, 0xbc, 0x3b, 0xb9, 0x92, 0x00, 0x8c, 0x04, 
        0x60, 0x24, 0x00, 0x23, 0x01, 0x18, 0x09, 0xc0, 0x48, 0x00, 0xbf, 0x88, 0x86, 0x03, 0x1d, 0x9a, 
        0x83, 0x2f, 0x86, 0x00, 0x00, 0x00, 0x00, 0x49, 0x45, 0x4e, 0x44, 0xae, 0x42, 0x60, 0x82, 
    };

screen_builder() {
    lv_img_dsc_t img_qrcode = {
        .header.always_zero = 0,
        .header.w = 140,
        .header.h = 140,
        .data_size = 703,
        .header.cf = LV_IMG_CF_RAW,
        .data = img_qrcode_map,
    };

    lv_obj_t * img = lv_img_create(lv_scr_act(), NULL);
    lv_img_set_src(img, &img_qrcode);
}

I am trying to follow the example in this issue (and am even using the same img_qrcode_map data).

I’ve tried various cf settings, which seemed to be the issue for him.

These QR codes need to be dynamically generated, so I do not want to save image files if possible.

I’ve updated the code a bit (still not working).

qr.c

#include "lvgl.h"
#include <stdint.h>

#ifndef LV_ATTRIBUTE_MEM_ALIGN
#define LV_ATTRIBUTE_MEM_ALIGN
#endif

static const LV_ATTRIBUTE_MEM_ALIGN uint8_t testqr_map[] = {
  0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a, 0x00, 0x00, 0x00, 0x0d, 0x49, 0x48, 0x44, 0x52, 
  0x00, 0x00, 0x00, 0xaf, 0x00, 0x00, 0x00, 0xaf, 0x08, 0x06, 0x00, 0x00, 0x00, 0x8b, 0x92, 0x8e, 
  0x75, 0x00, 0x00, 0x00, 0x01, 0x73, 0x52, 0x47, 0x42, 0x00, 0xae, 0xce, 0x1c, 0xe9, 0x00, 0x00, 
  0x00, 0x04, 0x67, 0x41, 0x4d, 0x41, 0x00, 0x00, 0xb1, 0x8f, 0x0b, 0xfc, 0x61, 0x05, 0x00, 0x00, 
  0x00, 0x09, 0x70, 0x48, 0x59, 0x73, 0x00, 0x00, 0x0b, 0x12, 0x00, 0x00, 0x0b, 0x12, 0x01, 0xd2, 
  0xdd, 0x7e, 0xfc, 0x00, 0x00, 0x0a, 0x65, 0x49, 0x44, 0x41, 0x54, 0x78, 0x5e, 0xed, 0x9d, 0xd1, 
  0x72, 0xe3, 0x38, 0x0c, 0x04, 0xf3, 0xff, 0x3f, 0xbd, 0x57, 0x89, 0x73, 0x5b, 0x4e, 0xd9, 0x91, 
  0xd1, 0x64, 0x43, 0xa4, 0xbc, 0x93, 0xaa, 0x7d, 0x83, 0x86, 0xc0, 0xa0, 0x09, 0x51, 0xb2, 0xb3, 
  0xf9, 0xf8, 0x93, 0x9f, 0x38, 0x70, 0x51, 0x07, 0x3e, 0x2e, 0x9a, 0x77, 0xd2, 0x8e, 0x03, 0x7f, 
  0x02, 0x6f, 0x20, 0xb8, 0xac, 0x03, 0x81, 0xf7, 0xb2, 0xad, 0x4b, 0xe2, 0x81, 0x37, 0x0c, 0x5c, 
  0xd6, 0x81, 0xc0, 0x7b, 0xd9, 0xd6, 0x25, 0xf1, 0xc0, 0x1b, 0x06, 0x2e, 0xeb, 0x40, 0xe0, 0xbd, 
  0x6c, 0xeb, 0x92, 0x78, 0xe0, 0x0d, 0x03, 0x97, 0x75, 0x20, 0xf0, 0x5e, 0xb6, 0x75, 0x49, 0x3c, 
  0xf0, 0x86, 0x81, 0xcb, 0x3a, 0x10, 0x78, 0x2f, 0xdb, 0xba, 0x24, 0x8e, 0xe1, 0xfd, 0xf8, 0xf8, 
  0xf8, 0x73, 0x85, 0x7f, 0xbf, 0xb5, 0xf6, 0xb7, 0xdc, 0x29, 0x0a, 0xdd, 0x1e, 0xd0, 0x7c, 0x68, 
  0xbd, 0xdd, 0xf9, 0x53, 0xfd, 0x91, 0x7a, 0x03, 0xef, 0xf7, 0x66, 0xa4, 0xe6, 0xd1, 0xe6, 0xd0, 
  0x78, 0x9a, 0x4f, 0xe0, 0x2d, 0x38, 0x46, 0x9b, 0xb0, 0x2a, 0x9e, 0x36, 0xb3, 0x50, 0xfa, 0x8f, 
  0x90, 0xee, 0xba, 0x68, 0x3e, 0xb4, 0xde, 0xee, 0xfc, 0xa9, 0xfe, 0x48, 0xbd, 0x99, 0xbc, 0x99, 
  0xbc, 0x5b, 0x1c, 0x03, 0x03, 0xef, 0xdd, 0x79, 0x9c, 0x4e, 0x22, 0x6a, 0x1e, 0x9d, 0x2c, 0x34, 
  0x9e, 0xe6, 0x43, 0xeb, 0xa5, 0xf9, 0x74, 0xc7, 0x8f, 0xd4, 0x9b, 0xc9, 0x9b, 0xc9, 0x9b, 0xc9, 
  0x3b, 0xb2, 0x73, 0x8c, 0x6b, 0x56, 0xbd, 0x3d, 0xa0, 0xb9, 0x77, 0xe7, 0x49, 0x27, 0x2f, 0xcd, 
  0xdf, 0x8a, 0xb7, 0x7c, 0xf8, 0xcc, 0x47, 0x9b, 0xbc, 0x56, 0x71, 0x54, 0xc7, 0x32, 0x83, 0xde, 
  0x16, 0x77, 0xcb, 0x33, 0xf0, 0x16, 0x3a, 0x62, 0xc1, 0x52, 0x58, 0xaa, 0x14, 0x62, 0xe5, 0x13, 
  0x78, 0x4b, 0x76, 0x4f, 0x07, 0x59, 0xfd, 0xca, 0xe4, 0xbd, 0x6b, 0x45, 0xe0, 0x9d, 0xe6, 0xb2, 
  0x24, 0x10, 0x78, 0x0b, 0xd0, 0x95, 0x9c, 0x2c, 0xe8, 0x58, 0x66, 0xaf, 0xd2, 0xb1, 0xd6, 0xa5, 
  0x7e, 0x9e, 0x71, 0x8c, 0xc9, 0x99, 0xf7, 0xdb, 0xe5, 0x4c, 0x5e, 0x0b, 0xcf, 0x63, 0x1d, 0x73, 
  0x33, 0xb5, 0xc3, 0x4b, 0xa1, 0xa0, 0xc5, 0xd1, 0x78, 0xda, 0x22, 0xaa, 0xdf, 0x5d, 0xef, 0xd5, 
  0xf3, 0xa7, 0x7e, 0x1e, 0xd5, 0x1b, 0x78, 0x5f, 0xd0, 0x40, 0xcd, 0x0e, 0xbc, 0xb7, 0x2f, 0x6e, 
  0xbd, 0xc5, 0xb1, 0xa1, 0xbb, 0x99, 0x14, 0xae, 0xab, 0x4f, 0xae, 0xab, 0xe7, 0x6f, 0xf6, 0x2b, 
  0x93, 0x37, 0x93, 0xf7, 0x87, 0x03, 0x57, 0x1a, 0x36, 0x81, 0x37, 0xf0, 0x06, 0x5e, 0x7a, 0xc6, 
  0xa1, 0x3b, 0x9c, 0xea, 0xd3, 0xdb, 0xab, 0xa5, 0x4f, 0xeb, 0x32, 0x6f, 0xa3, 0xcf, 0x6a, 0xa0, 
  0xfa, 0xdd, 0xf9, 0xd3, 0x7c, 0xf2, 0xc0, 0x66, 0x91, 0x5c, 0xd0, 0xa1, 0xcd, 0x2f, 0x48, 0x4e, 
  0x85, 0x50, 0x58, 0x68, 0xfe, 0x96, 0xfe, 0x48, 0x91, 0x39, 0x36, 0x8c, 0xb8, 0x76, 0x70, 0x0d, 
  0x6d, 0xbe, 0xbc, 0xfc, 0x83, 0x9c, 0x05, 0x97, 0x55, 0x17, 0xcd, 0x27, 0x93, 0xb7, 0x9b, 0x90, 
  0x3b, 0x7d, 0xab, 0xc9, 0x56, 0xca, 0x14, 0x16, 0x9a, 0xbf, 0xa5, 0x3f, 0x52, 0x6f, 0x26, 0xef, 
  0x88, 0x6b, 0x99, 0xbc, 0x2f, 0xbf, 0x03, 0x6c, 0x3d, 0x43, 0x64, 0xf2, 0xca, 0x80, 0x1e, 0x1a, 
  0x0a, 0x7f, 0xbb, 0xba, 0x3b, 0x35, 0x6b, 0x32, 0xd2, 0x89, 0x1c, 0x78, 0x4f, 0xfc, 0xb5, 0x1e, 
  0x0b, 0x22, 0xab, 0xc9, 0xdd, 0xf9, 0x50, 0xb8, 0xac, 0xba, 0xe8, 0x66, 0xca, 0xe4, 0x2d, 0x90, 
  0x40, 0x4d, 0xa5, 0xf1, 0x14, 0x96, 0xdd, 0xe2, 0x03, 0x2f, 0xbc, 0xa5, 0xde, 0x1b, 0x66, 0x35, 
  0xd3, 0xd2, 0x09, 0xbc, 0xc7, 0xff, 0xf9, 0x8c, 0xe5, 0x73, 0x26, 0x6f, 0x26, 0xef, 0xc3, 0x03, 
  0x16, 0x85, 0x2b, 0x93, 0x37, 0x93, 0xb7, 0xed, 0x3d, 0x2c, 0x85, 0x91, 0xc6, 0x07, 0xde, 0xc0, 
  0x1b, 0x78, 0x7f, 0x61, 0xa0, 0x70, 0x73, 0x7c, 0xf4, 0x8e, 0x5e, 0x44, 0xcf, 0x7a, 0x74, 0xc7, 
  0x5a, 0xfa, 0xab, 0xea, 0xda, 0x6d, 0x5d, 0xcb, 0x4f, 0xda, 0x47, 0x3a, 0xd9, 0xa9, 0x6f, 0x9f, 
  0xf1, 0xed, 0x1f, 0x52, 0x8c, 0x24, 0x45, 0xae, 0xa1, 0xcd, 0x21, 0xda, 0x5f, 0x06, 0xc1, 0x49, 
  0x61, 0x35, 0xd9, 0x6a, 0x3e, 0xcd, 0x9f, 0xfa, 0x43, 0xe3, 0xcd, 0x7c, 0x02, 0xef, 0x0b, 0xf7, 
  0xa9, 0xd9, 0x81, 0xf7, 0xd8, 0x50, 0xea, 0xe7, 0xd2, 0xb7, 0x0d, 0x74, 0x67, 0xd2, 0x78, 0xd3, 
  0x8c, 0x67, 0x6b, 0x53, 0xfd, 0xc0, 0x1b, 0x78, 0xcb, 0x0c, 0x53, 0xb8, 0xca, 0xc2, 0xdf, 0x81, 
  0x54, 0x3f, 0xf0, 0x06, 0xde, 0x32, 0x63, 0x14, 0xae, 0xb2, 0x70, 0xe0, 0xa5, 0x56, 0x95, 0xe2, 
  0xcd, 0x7e, 0xe5, 0xcc, 0x9b, 0x33, 0x6f, 0x09, 0x3a, 0x2b, 0x68, 0x4b, 0x78, 0xe9, 0xed, 0xb2, 
  0x3b, 0x7e, 0xd5, 0xd3, 0x3a, 0x6d, 0xce, 0xaa, 0xf8, 0x6e, 0xff, 0xa9, 0xfe, 0xc8, 0xe6, 0xd0, 
  0x26, 0x2f, 0x4d, 0xb6, 0x3b, 0x3e, 0xf0, 0xde, 0x1c, 0xe8, 0xf6, 0xd9, 0xd2, 0x0f, 0xbc, 0x0d, 
  0x5f, 0xa1, 0x5c, 0x35, 0x19, 0xbb, 0x37, 0x9f, 0x05, 0x9d, 0xa5, 0x13, 0x78, 0x03, 0xef, 0x03, 
  0x03, 0x16, 0x5c, 0xdd, 0x3a, 0x81, 0x37, 0xf0, 0x06, 0xde, 0xc3, 0x4f, 0x35, 0x26, 0xbe, 0x5c, 
  0xd3, 0xbd, 0x7b, 0xef, 0xf5, 0xbb, 0x6f, 0xbb, 0x57, 0xd7, 0x3f, 0xb3, 0x17, 0x95, 0xb5, 0x4e, 
  0x99, 0xbc, 0x23, 0x8b, 0xec, 0x74, 0x8d, 0x75, 0x86, 0x5d, 0xa5, 0xb3, 0x93, 0x97, 0xab, 0x73, 
  0xc1, 0x6f, 0x1b, 0x56, 0x27, 0x3c, 0xbb, 0xfe, 0x2a, 0xe8, 0x2a, 0xd3, 0xa7, 0x72, 0xe7, 0x98, 
  0xad, 0xff, 0x9d, 0xae, 0x0f, 0xbc, 0x2f, 0xfe, 0x94, 0x95, 0x05, 0x9d, 0xa5, 0xf3, 0x4e, 0xf0, 
  0xcd, 0xd6, 0x12, 0x78, 0x03, 0xef, 0x2c, 0x43, 0xcb, 0xae, 0x0f, 0xbc, 0x81, 0x77, 0x19, 0x7c, 
  0xb3, 0x0b, 0x07, 0xde, 0xc0, 0x3b, 0xcb, 0xd0, 0xb2, 0xeb, 0x31, 0xbc, 0xd6, 0xd9, 0xad, 0x5b, 
  0x87, 0x3a, 0x4a, 0xf3, 0xa1, 0x0f, 0x7e, 0x56, 0x3e, 0xab, 0x74, 0xe8, 0xba, 0xd6, 0xab, 0xc4, 
  0xc3, 0xd7, 0xb6, 0x34, 0x29, 0xda, 0x64, 0x5a, 0x04, 0x85, 0x82, 0xc6, 0x5b, 0xf9, 0x58, 0xeb, 
  0xd2, 0x7c, 0xac, 0x7e, 0x51, 0x1d, 0x2b, 0xde, 0xf4, 0x2d, 0x93, 0xf7, 0xbb, 0x2b, 0x74, 0x53, 
  0x9a, 0x4d, 0x78, 0x06, 0x86, 0xa5, 0x6f, 0xe9, 0x04, 0xde, 0x3b, 0x07, 0x28, 0x2c, 0xab, 0x26, 
  0x94, 0x95, 0x27, 0x6d, 0xbe, 0x05, 0x9d, 0xa5, 0x43, 0xf3, 0xef, 0xee, 0xd7, 0xa7, 0x7e, 0x26, 
  0x6f, 0x26, 0xaf, 0xc5, 0x65, 0x49, 0xc7, 0xdc, 0x4c, 0x81, 0x37, 0xf0, 0x96, 0xa0, 0xb3, 0x82, 
  0x96, 0xc2, 0x6b, 0x15, 0x41, 0x6f, 0x2b, 0xb4, 0xe8, 0xee, 0x78, 0x2b, 0x7f, 0xeb, 0x58, 0x62, 
  0xd5, 0x4b, 0xf3, 0xa1, 0xf1, 0x26, 0x3f, 0x78, 0xf2, 0x9a, 0x8b, 0x93, 0x07, 0x15, 0xab, 0x39, 
  0x14, 0x3a, 0x5a, 0x2f, 0x6d, 0x26, 0x8d, 0xb7, 0xf2, 0xa7, 0xeb, 0x5a, 0xf1, 0xd4, 0xcf, 0xa3, 
  0xf8, 0xc0, 0xfb, 0xe2, 0xd8, 0x40, 0xcd, 0xb6, 0x9a, 0xbc, 0x6a, 0xb3, 0xae, 0xca, 0x9f, 0xfa, 
  0x3c, 0xf4, 0xc0, 0x36, 0xb2, 0x08, 0xb9, 0x86, 0x9a, 0xd7, 0x3d, 0x89, 0x48, 0xee, 0x5f, 0x86, 
  0x36, 0x7f, 0xdf, 0xb9, 0xbb, 0xde, 0x55, 0xf9, 0x53, 0x9f, 0x03, 0xef, 0x9d, 0x63, 0x74, 0xd2, 
  0x51, 0x88, 0x2c, 0x28, 0xe8, 0xba, 0x34, 0xde, 0xca, 0xd3, 0xf2, 0x33, 0xc7, 0x86, 0x86, 0x5f, 
  0x0f, 0x5a, 0x05, 0x05, 0x5d, 0x97, 0xc6, 0xbf, 0x35, 0xbc, 0x74, 0x47, 0xed, 0x16, 0x4f, 0x6f, 
  0x4f, 0xb4, 0x99, 0x14, 0x16, 0x2b, 0x9e, 0xea, 0x74, 0xf7, 0x85, 0xe6, 0x43, 0xfb, 0x32, 0x74, 
  0x6c, 0xe8, 0x2e, 0xba, 0x5b, 0x9f, 0x9a, 0x14, 0x78, 0x6f, 0x8e, 0xd1, 0xbe, 0x04, 0xde, 0x13, 
  0x6f, 0xf7, 0xd4, 0x6c, 0xda, 0xcc, 0xee, 0xf8, 0xdd, 0xf2, 0xa7, 0xf9, 0xd0, 0xa1, 0x92, 0xc9, 
  0x5b, 0x70, 0x2c, 0x93, 0x37, 0x93, 0x77, 0xfa, 0xaf, 0xd1, 0x9c, 0xb1, 0x93, 0x9f, 0xad, 0x11, 
  0x78, 0x03, 0x6f, 0xe0, 0x95, 0xfe, 0x3c, 0x40, 0xe1, 0x66, 0xf1, 0x23, 0x64, 0xd5, 0xe6, 0x3b, 
  0x63, 0xd8, 0xe0, 0x4f, 0xd8, 0xa8, 0x19, 0xd6, 0x59, 0x8f, 0xea, 0x50, 0xf3, 0xac, 0xba, 0xac, 
  0x3c, 0x29, 0xa4, 0x34, 0x9e, 0xe6, 0xb9, 0xa3, 0x3f, 0x81, 0xb7, 0xf9, 0x13, 0xb1, 0xff, 0x9b, 
  0x4e, 0xe1, 0xea, 0x8e, 0x0f, 0xbc, 0x13, 0x8d, 0xb7, 0x26, 0x23, 0x6d, 0x72, 0xf7, 0x04, 0xa1, 
  0x50, 0xd0, 0xfc, 0xad, 0x78, 0x9a, 0x67, 0xb7, 0x6f, 0x23, 0x75, 0x65, 0xf2, 0x4e, 0x6c, 0x40, 
  0xd2, 0xd0, 0x91, 0xe6, 0x74, 0x5e, 0x13, 0x78, 0x27, 0x1a, 0x9f, 0xc9, 0xdb, 0x89, 0xe6, 0x6b, 
  0xed, 0xc0, 0x1b, 0x78, 0xcb, 0xdf, 0x22, 0x7b, 0x8d, 0xd3, 0xb9, 0x11, 0x81, 0xb7, 0xf0, 0x09, 
  0x18, 0x6d, 0x89, 0x65, 0x6a, 0xf7, 0x64, 0x27, 0x47, 0x86, 0xcf, 0x58, 0xfa, 0x43, 0xf5, 0x69, 
  0x3c, 0xcd, 0xc7, 0x8a, 0xa7, 0xfd, 0x3d, 0x5a, 0x17, 0xbb, 0x6a, 0x2e, 0x4e, 0x3e, 0x14, 0xa0, 
  0x30, 0xd2, 0x78, 0x5a, 0x57, 0x37, 0x2c, 0x54, 0x9f, 0xc6, 0x5b, 0x30, 0x52, 0x1d, 0xea, 0x73, 
  0xe0, 0xbd, 0x73, 0xc0, 0x6a, 0xb2, 0xa5, 0x63, 0x6d, 0xb2, 0xee, 0x7c, 0x28, 0xa4, 0xb4, 0xae, 
  0x11, 0xfd, 0x4c, 0xde, 0x17, 0xe7, 0x76, 0xda, 0x04, 0x6b, 0xb2, 0x50, 0x18, 0x69, 0xfc, 0x08, 
  0x2c, 0xc6, 0x35, 0x96, 0x3f, 0x9f, 0xb9, 0x04, 0xde, 0xc0, 0x6b, 0x30, 0x59, 0xd6, 0x08, 0xbc, 
  0x85, 0x63, 0x40, 0xf7, 0xc4, 0xec, 0x9e, 0x74, 0x54, 0x9f, 0xc6, 0x97, 0x69, 0x93, 0x03, 0x97, 
  0xc2, 0x4b, 0x6b, 0xf9, 0x17, 0x4d, 0x25, 0x0f, 0xa2, 0xd4, 0x1f, 0xb3, 0xf9, 0x24, 0x4f, 0xab, 
  0xef, 0x54, 0x47, 0x7d, 0x60, 0xa3, 0x8b, 0xd3, 0xe6, 0x50, 0x7d, 0x2b, 0x7e, 0x15, 0x14, 0xd4, 
  0x9f, 0x55, 0x79, 0x52, 0x9f, 0xbb, 0xf3, 0x1c, 0x3a, 0xf3, 0x5a, 0x45, 0x9c, 0x51, 0x1c, 0xc9, 
  0xb5, 0x3b, 0x1f, 0x0b, 0xd2, 0x55, 0x79, 0x12, 0x2f, 0xbf, 0xc0, 0x82, 0x5f, 0x01, 0xa5, 0xfa, 
  0x81, 0x77, 0xe2, 0xec, 0x4c, 0xcd, 0x0e, 0xbc, 0x1f, 0x5f, 0x40, 0x9b, 0x3f, 0xae, 0xda, 0x93, 
  0xcc, 0x68, 0xd3, 0xcc, 0xe2, 0x88, 0x56, 0xf7, 0xa4, 0xa0, 0x3e, 0xd0, 0x78, 0x52, 0xeb, 0xe1, 
  0x39, 0x52, 0x9a, 0x98, 0xdd, 0x7e, 0x66, 0xf2, 0x66, 0xf2, 0x3e, 0x70, 0x6c, 0x41, 0x67, 0xe9, 
  0x6c, 0xf9, 0xc0, 0x46, 0x27, 0x05, 0x9d, 0x44, 0xd4, 0x3c, 0x2b, 0x9e, 0xea, 0xfc, 0xe6, 0x43, 
  0x77, 0xbd, 0xdd, 0xeb, 0xd2, 0xfc, 0x29, 0x0f, 0x4b, 0x27, 0x2f, 0x4d, 0x96, 0x9a, 0x41, 0x21, 
  0xb2, 0xe2, 0xa9, 0x4e, 0x37, 0x44, 0xab, 0x7c, 0xa6, 0xfd, 0xa2, 0x79, 0x06, 0xde, 0x89, 0x63, 
  0x43, 0x77, 0x73, 0xa8, 0xfe, 0x6e, 0x9b, 0x86, 0xe6, 0x1f, 0x78, 0x0b, 0xdf, 0x2f, 0xa6, 0x93, 
  0x8e, 0xc6, 0xef, 0x06, 0x11, 0x85, 0x82, 0x42, 0x67, 0xc5, 0xd3, 0x3c, 0x33, 0x79, 0x33, 0x79, 
  0xcb, 0x0f, 0x6c, 0x16, 0xa4, 0xd6, 0xe6, 0x0e, 0xbc, 0x81, 0x37, 0xf0, 0x7e, 0xed, 0x02, 0xf8, 
  0x7e, 0xd0, 0xda, 0xc9, 0xf4, 0xb6, 0x4e, 0xe3, 0x69, 0x9e, 0x23, 0xb7, 0xbf, 0x67, 0xd7, 0x50, 
  0x3f, 0xe9, 0xba, 0x56, 0x5d, 0x34, 0x4f, 0x1a, 0x7f, 0xca, 0xab, 0x32, 0x9a, 0x14, 0x35, 0xcf, 
  0xd2, 0x0f, 0xbc, 0x37, 0x07, 0xa8, 0xff, 0xd4, 0x37, 0x2b, 0x3e, 0xf0, 0x16, 0x7e, 0xd7, 0x8e, 
  0x36, 0x93, 0x6e, 0x26, 0x6b, 0x32, 0x52, 0x1d, 0x0a, 0x11, 0xad, 0xab, 0x3b, 0x3e, 0xf0, 0x06, 
  0xde, 0xe9, 0xb3, 0x2d, 0xdd, 0x04, 0x56, 0x7c, 0xe0, 0x0d, 0xbc, 0x81, 0xf7, 0x70, 0x17, 0xe4, 
  0x81, 0x4d, 0xfd, 0xd6, 0x14, 0xbd, 0x1d, 0xd3, 0xe3, 0x04, 0x3d, 0x26, 0x59, 0x93, 0xd4, 0xac, 
  0x4b, 0xfb, 0x56, 0x99, 0x65, 0x86, 0xd5, 0x04, 0xcb, 0x6c, 0x9a, 0x8f, 0xb5, 0x2e, 0xf5, 0xb3, 
  0x3b, 0x9e, 0xd6, 0x65, 0x42, 0xfa, 0xeb, 0xda, 0xdd, 0xcd, 0xe9, 0x2e, 0x82, 0xea, 0xd3, 0xf8, 
  0x6e, 0x7f, 0x2c, 0x28, 0x02, 0xef, 0x44, 0xa7, 0xa8, 0x79, 0x13, 0x4b, 0xfd, 0xb8, 0x94, 0xc2, 
  0x48, 0xe3, 0x77, 0xcb, 0x93, 0xfa, 0x6c, 0xc5, 0x5b, 0x9b, 0xcc, 0xf2, 0xf3, 0xeb, 0x75, 0x9f, 
  0x25, 0x46, 0x4d, 0xea, 0x5e, 0x97, 0x9a, 0x6d, 0xe5, 0x63, 0xad, 0x4b, 0xfd, 0xec, 0x8e, 0xa7, 
  0x75, 0x9d, 0x31, 0x24, 0x02, 0xef, 0xf7, 0x83, 0x66, 0xe0, 0xbd, 0xfd, 0x9a, 0x0e, 0x85, 0x8e, 
  0x6e, 0x1a, 0xd3, 0xe7, 0xc0, 0x1b, 0x78, 0x4b, 0x9f, 0xb6, 0xbd, 0xf5, 0xe4, 0x35, 0x77, 0x54, 
  0xa7, 0x16, 0x9d, 0x14, 0xdd, 0xf1, 0xbb, 0x41, 0x41, 0x27, 0x2f, 0xcd, 0xdf, 0xec, 0xad, 0x36, 
  0x79, 0xcd, 0xa4, 0x3a, 0xb5, 0xba, 0x61, 0xa4, 0xfa, 0xb4, 0xf9, 0x16, 0x5c, 0x74, 0x5d, 0xda, 
  0x93, 0xee, 0x3c, 0xd5, 0x07, 0x36, 0x5a, 0xdc, 0xaa, 0x78, 0x0a, 0x57, 0x77, 0x3c, 0x85, 0xa8, 
  0x1b, 0x0a, 0x4b, 0xdf, 0xd2, 0x39, 0xe2, 0x24, 0x93, 0xb7, 0xf0, 0xdb, 0x17, 0x9d, 0x00, 0x07, 
  0xde, 0xf1, 0x31, 0x16, 0x78, 0x03, 0xef, 0xd4, 0x7b, 0x73, 0xba, 0xf9, 0xc6, 0x51, 0x7d, 0xbc, 
  0x32, 0xf0, 0x06, 0xde, 0x7f, 0x07, 0xde, 0xce, 0x5b, 0xa8, 0xa9, 0x6d, 0xee, 0xf0, 0x67, 0x5a, 
  0x67, 0x9c, 0xe9, 0x8c, 0x75, 0x69, 0x9e, 0xb4, 0x07, 0xd4, 0x67, 0x9a, 0x8f, 0x7a, 0xe6, 0xa5, 
  0xc5, 0xad, 0x8a, 0xa7, 0xa6, 0xd2, 0x78, 0xb3, 0x09, 0x64, 0x6d, 0xba, 0xae, 0x15, 0x4f, 0x75, 
  0xce, 0x38, 0x4e, 0xe0, 0x63, 0xc3, 0x2a, 0x18, 0xe9, 0xba, 0x04, 0x88, 0x91, 0x58, 0xab, 0x99, 
  0x74, 0x6d, 0xba, 0xae, 0x15, 0x4f, 0x75, 0x02, 0xef, 0xc4, 0x79, 0x94, 0x42, 0x41, 0xe3, 0xad, 
  0x66, 0x76, 0xaf, 0x4b, 0xf3, 0xec, 0x1e, 0x12, 0x34, 0x9f, 0x1c, 0x1b, 0x28, 0x21, 0x85, 0x78, 
  0xb3, 0x09, 0x85, 0xe5, 0xfe, 0x86, 0xd0, 0x75, 0xad, 0x78, 0xaa, 0x93, 0xc9, 0x9b, 0xc9, 0xfb, 
  0xc0, 0x00, 0x85, 0xc8, 0x8a, 0xa7, 0x3a, 0x97, 0x82, 0x97, 0x4c, 0x0f, 0x33, 0xd6, 0x32, 0xd5, 
  0x32, 0xdb, 0xba, 0xed, 0x5a, 0x3a, 0xd4, 0x6b, 0xcb, 0x4f, 0x4b, 0xe7, 0x94, 0x63, 0x03, 0x35, 
  0xc9, 0x8a, 0xef, 0x36, 0x89, 0xea, 0x5b, 0xd0, 0x59, 0x3a, 0xd4, 0x67, 0x5a, 0xaf, 0xb5, 0xe9, 
  0x69, 0x9e, 0x9f, 0xf1, 0xda, 0xdb, 0x86, 0x91, 0xc5, 0x8d, 0x6b, 0x2c, 0xb3, 0xad, 0x26, 0x58, 
  0xd0, 0x59, 0x3a, 0xd4, 0x63, 0xcb, 0x4f, 0x4b, 0x27, 0x93, 0x97, 0x76, 0xf0, 0x2e, 0x9e, 0x36, 
  0xc1, 0x82, 0xce, 0xd2, 0xa1, 0xa5, 0xd3, 0x7a, 0xad, 0x4d, 0x4f, 0xf3, 0xcc, 0xe4, 0x2d, 0x38, 
  0x46, 0x9b, 0x69, 0x41, 0x67, 0xe9, 0x14, 0x4a, 0xfc, 0x11, 0x42, 0xeb, 0x0d, 0xbc, 0xd4, 0xe1, 
  0x89, 0xc9, 0x48, 0x97, 0xa2, 0xcd, 0xb4, 0xa0, 0xb3, 0x74, 0xba, 0xeb, 0x7d, 0x6b, 0x78, 0x69, 
  0x13, 0x2c, 0x58, 0x2c, 0x53, 0x57, 0xe5, 0x63, 0xf9, 0xd6, 0xad, 0x43, 0x7d, 0xa6, 0x7e, 0x2e, 
  0x3d, 0xf3, 0x5a, 0xe6, 0x51, 0x93, 0xae, 0x1e, 0x6f, 0xf9, 0xd6, 0xad, 0x43, 0x7d, 0x0e, 0xbc, 
  0x13, 0xc7, 0x06, 0x6a, 0xde, 0xaa, 0xf8, 0x6e, 0xe8, 0x2c, 0xfd, 0xc0, 0x5b, 0xf8, 0x24, 0x8d, 
  0x9a, 0x74, 0xf5, 0x78, 0x0b, 0xae, 0x6e, 0x1d, 0xea, 0x33, 0x1d, 0x06, 0x39, 0x36, 0x5c, 0x70, 
  0x52, 0x77, 0x43, 0x67, 0xe9, 0x07, 0xde, 0x4c, 0xde, 0xd2, 0xff, 0x9d, 0x60, 0x01, 0x67, 0xea, 
  0x04, 0xde, 0x8d, 0xe1, 0xa5, 0xaf, 0x9a, 0x56, 0x35, 0xd3, 0x02, 0x92, 0xe6, 0x4f, 0xe3, 0x73, 
  0x6c, 0x38, 0xf1, 0x18, 0x10, 0x78, 0x6f, 0x0e, 0x50, 0xe8, 0xe8, 0x66, 0x1a, 0xf1, 0xb9, 0xfd, 
  0xbb, 0x0d, 0xb4, 0x08, 0xcb, 0x24, 0x3a, 0x11, 0x46, 0xcc, 0x23, 0xd7, 0x50, 0x1f, 0x88, 0xf6, 
  0x11, 0x5c, 0xd6, 0xba, 0x56, 0x5f, 0xa8, 0x4e, 0x1e, 0xd8, 0x26, 0x26, 0x35, 0x85, 0x88, 0x6e, 
  0x1a, 0xab, 0x99, 0x14, 0x52, 0xba, 0xae, 0x15, 0x4f, 0x75, 0x02, 0x6f, 0xe0, 0x2d, 0x3f, 0x10, 
  0xd2, 0xcd, 0x47, 0xe3, 0x03, 0xef, 0x04, 0x8c, 0xa6, 0x79, 0x64, 0x2a, 0xd3, 0xc9, 0x48, 0xb4, 
  0x73, 0x6c, 0x28, 0xba, 0x45, 0x9b, 0x4f, 0x9b, 0x66, 0xe9, 0x17, 0xcb, 0xf9, 0x1b, 0x46, 0xf3, 
  0xa4, 0x13, 0x87, 0xe6, 0x43, 0xf5, 0x2d, 0xdf, 0xba, 0x75, 0xa8, 0x7e, 0x8e, 0x0d, 0x05, 0x72, 
  0x02, 0xef, 0x39, 0xff, 0xb9, 0x74, 0xe0, 0x9d, 0x38, 0x36, 0xac, 0x9a, 0x68, 0x85, 0xfd, 0x53, 
  0x0a, 0xe9, 0xde, 0x64, 0x14, 0x2e, 0x9a, 0x0f, 0xd5, 0xcf, 0xe4, 0x2d, 0x60, 0x41, 0x9b, 0x40, 
  0x37, 0x41, 0x21, 0x85, 0x52, 0x48, 0x77, 0x9e, 0x14, 0x2e, 0x9a, 0x0f, 0xd5, 0x0f, 0xbc, 0x05, 
  0x2c, 0x68, 0x13, 0x02, 0xef, 0xcd, 0x01, 0xea, 0x5b, 0xe0, 0xcd, 0xb1, 0xa1, 0x0c, 0x0d, 0xdd, 
  0x64, 0x14, 0xae, 0xb7, 0x86, 0xb7, 0x30, 0xf4, 0xa6, 0x42, 0xae, 0x64, 0xf6, 0xb3, 0x42, 0x69, 
  0xfe, 0x53, 0x66, 0x15, 0x36, 0x3d, 0xcd, 0x27, 0xf0, 0x4e, 0x74, 0xe4, 0x4a, 0x66, 0x07, 0x5e, 
  0xfe, 0xa7, 0xb2, 0x96, 0x9e, 0x79, 0x27, 0xb8, 0x2c, 0x5d, 0x1a, 0x78, 0x4b, 0x36, 0x3d, 0x04, 
  0xd1, 0x89, 0x69, 0x1d, 0x3f, 0x68, 0xbf, 0x02, 0xef, 0xc4, 0xed, 0xd2, 0x34, 0x3b, 0x93, 0x37, 
  0x93, 0xf7, 0x07, 0x03, 0x14, 0x2e, 0x3a, 0x71, 0xa8, 0x3e, 0x9d, 0x83, 0xdd, 0xfa, 0xd6, 0xc4, 
  0xb4, 0x74, 0xcc, 0x7a, 0xdb, 0xbf, 0x12, 0x49, 0x9b, 0x49, 0xe3, 0xa9, 0x19, 0x81, 0x77, 0xec, 
  0x15, 0xd7, 0x5b, 0xc3, 0x6b, 0x41, 0x61, 0xe9, 0xac, 0x32, 0xdb, 0xca, 0x9f, 0xea, 0xd0, 0x7a, 
  0xbb, 0x87, 0x44, 0x77, 0x3e, 0x5f, 0xef, 0x98, 0xad, 0x22, 0xa8, 0xd9, 0xdd, 0xf1, 0xd4, 0x3c, 
  0x9a, 0x4f, 0xb7, 0x7e, 0x77, 0x3e, 0x56, 0xdf, 0x57, 0xe9, 0x04, 0xde, 0xc2, 0xef, 0xce, 0xad, 
  0x3a, 0x96, 0x04, 0xde, 0xd7, 0xdb, 0x22, 0x93, 0x77, 0x10, 0xe0, 0x4c, 0xde, 0xdb, 0x9b, 0x03, 
  0xfa, 0x43, 0x87, 0xc1, 0x29, 0xaf, 0xca, 0xe8, 0xa4, 0xe8, 0x8e, 0xef, 0x86, 0xab, 0x5b, 0x9f, 
  0xfa, 0x43, 0xf3, 0x59, 0x05, 0x5d, 0xe0, 0x2d, 0x4c, 0x4b, 0xda, 0xcc, 0x6e, 0x58, 0xa8, 0x3e, 
  0x8d, 0xa7, 0xf5, 0xfe, 0x93, 0xf0, 0xd2, 0xa2, 0x13, 0x1f, 0x07, 0xba, 0x1c, 0xe0, 0x87, 0x96, 
  0xae, 0x4c, 0xa2, 0x1b, 0x07, 0xa0, 0x03, 0x81, 0x17, 0x1a, 0x96, 0xf0, 0x7d, 0x1c, 0x08, 0xbc, 
  0xfb, 0xf4, 0x22, 0x99, 0x40, 0x07, 0x02, 0x2f, 0x34, 0x2c, 0xe1, 0xfb, 0x38, 0x10, 0x78, 0xf7, 
  0xe9, 0x45, 0x32, 0x81, 0x0e, 0x04, 0x5e, 0x68, 0x58, 0xc2, 0xf7, 0x71, 0x20, 0xf0, 0xee, 0xd3, 
  0x8b, 0x64, 0x02, 0x1d, 0x08, 0xbc, 0xd0, 0xb0, 0x84, 0xef, 0xe3, 0x40, 0xe0, 0xdd, 0xa7, 0x17, 
  0xc9, 0x04, 0x3a, 0x10, 0x78, 0xa1, 0x61, 0x09, 0xdf, 0xc7, 0x81, 0xc0, 0xbb, 0x4f, 0x2f, 0x92, 
  0x09, 0x74, 0x20, 0xf0, 0x42, 0xc3, 0x12, 0xbe, 0x8f, 0x03, 0xff, 0x01, 0xc0, 0xd4, 0xd4, 0xe4, 
  0xad, 0x13, 0xfa, 0x61, 0x00, 0x00, 0x00, 0x00, 0x49, 0x45, 0x4e, 0x44, 0xae, 0x42, 0x60, 0x82, 
  
};

lv_img_dsc_t testqr = {
  .header.always_zero = 0,
  .header.w = 175,
  .header.h = 175,
  .data_size = 2768,
  .header.cf = LV_IMG_CF_RAW,
  .data = testqr_map,
};

screen_builder.c:

LV_IMG_DECLARE(testqr);

builder() {
  lv_obj_t * img = lv_img_create(lv_scr_act(), NULL);
  lv_img_set_src(img, &testqr);
  lv_obj_align(img, NULL, LV_ALIGN_IN_BOTTOM_MID, -150, -500);
  lv_obj_set_size(img, 200, 200);
}

Also, I am getting these warnings:

Warn: Image draw cannot open the image resource   (/Users/.../lvgl/lv_draw/lv_draw_img.c #311) 
Warn: Image draw error    (/Users/.../lvgl/lv_draw/lv_draw_img.c #82)

I was able to solve this problem by using a different number of bits per pixel. Did not realize my screen was unable to draw lower BPP :stuck_out_tongue:

LittlevGL couldn’t decode LV_IMG_CF_RAW format on its own because it’s raw and library doesn’t know what to do with it. You should use e.g. LV_IMG_CF_TRUE_COLOR but I suppose you did it if it’s working :slight_smile: