XIAO NRF Sense Image not working

[Gabinson200]

Hello, I'm using the round display with the XIAO nRF52840 (Sense) with the Arduino GFX library. I was able to use images with lvgl version 8.3.4 but I wanted to upgrade to 9.2.0 so i can do non-uniform scaling on images. However, while my code compiles and there are no errors the image is not shown. I used the v9 converter here https://lvgl.io/tools/imageconverter and tried the 565 and 565A8 encoding but neither worked. I have tried using different versions of the conf_h file to get it to work but while both 8.3 and 9.2 conf_h file versions compiled neither displayed the image. Lastly I had to change the lv_image_dsc_t in both 8.3 and 9.2 versions to work. For 8.3 this style worked perfectly:

const lv_img_dsc_t tile000 = {
.header = {
.cf = LV_IMG_CF_TRUE_COLOR_ALPHA,
.always_zero = 0,
.reserved = 0,
.w = 64,
.h = 64,
},
.data_size = 4096 * LV_IMG_PX_SIZE_ALPHA_BYTE,
.data = tile000_map,
};

but for version 9.2, while the program compiled the image did not display:
const lv_image_dsc_t tile000 = {
{
LV_COLOR_FORMAT_RGB565,
LV_IMAGE_HEADER_MAGIC,
64,
64,
},
4096 * 2,
tile000_map,
};

Any and all help is greatly appreciated!

[ackPeng]

@Gabinson200 Hi, I ran the HardwareTest instance using esp32s3 and it worked fine. Can you provide a more detailed description of your program?

[ackPeng]

@Gabinson200 When I use nRF52840, I find that there are compilation errors in the dependent Arduino GFX library. I will further investigate. Your further feedback is also welcome.

[Gabinson200]

Thank you for the help, I have kind of found a workaround for what I wanted from the lvgl 9.2 function in 8.3. But in short the issue was that my program which creates images by importing the hex code from a .h file in the form described above:

lv_obj_t *sprite_img = lv_img_create(lv_scr_act());
// Set the image source
const lv_img_dsc_t *src = sprite_images[i % num_sprites];
lv_img_set_src(sprite_img, src);

was unable to display (probably decode) the images.

here is a link to my github where I uploaded the code if additional info is needed. The program is basically a sprite stacking code so I can create pseudo 3d images / animations in lvgl + some really jank touch control that I'm trying to fix right now.

[ackPeng]

Great, this issue will be closed. If you have new questions, please feel free to submit them again.