Hi,

I'm working on a embedded system using a Teensy 4.1 with SD Card, and Riverdi 7" 1024x600 EVE4 BT817 display with 512Mb flash chip. I'm also using the excellent EVE library from Rudolph.

The idea is to place a standard JPG or PNG file on to the SD card with a known name eg boot.jpg and this is displayed at startup.

When the power is applied the SD card is scanned for the file boot.jpg and then the image is transferred from SD Card to the EVE flash, and then removed from the SD card.

The next time the power is cycled the boot image is displayed from flash.

So my questions are:
1.Is this actually possible with large 1024x600 jpg / png images
2. How do I transfer the file boot.jpg from SD card to Image flash using the Rudolph library ? I Assume I need to do this in chunks
3. Do I need to convert image into ASTC format or can I leave as native JPG / PNG ?
4. Lastly how do I display image directly from flash using the Rudolph library ?

For info, my test app using the Rudolph library is working perfectly so far on the Teensy 4.1 using DMA and have got my ASTC 5x5 icon font working well.

Hopefully someone (like Rudolph) and point me in the right direction!