04-14-2019, 04:29 PM
Oh wow 26,218 is a big number, good thing I added that 5th digit, I didn't think it would actually be used though. Let me know how that class 10 SD card works out, you'll win the lottery before me. :)
The problem with the images is more than just loading, that's actually quite fast and with proper image management a screen would almost be instant if it wasn't for the fact a search is done on the card for the file it's opening. With the cards I'm using it takes about 100 milliseconds before it starts loading an image, so if screen has 10 small images that's guaranteed to take 1+ seconds. The images actually load in probably 20-50 millis but the searching takes the 1 second. I'm not sure but it appears that's why smaller cards are faster, less to search for that file. I don't really understand but this is the fault of the SD card library. Because of that I use a larger images to cover what could be 5 or 6 images as it loads faster overall as the search only happens once. You can really see the effect of this on the worst possible screen, the home page because of all the outlet icons. To increase speed on home page some of the smallest images are actually stored on the Arduino instead of SD card as those load instantly.
The problem with the images is more than just loading, that's actually quite fast and with proper image management a screen would almost be instant if it wasn't for the fact a search is done on the card for the file it's opening. With the cards I'm using it takes about 100 milliseconds before it starts loading an image, so if screen has 10 small images that's guaranteed to take 1+ seconds. The images actually load in probably 20-50 millis but the searching takes the 1 second. I'm not sure but it appears that's why smaller cards are faster, less to search for that file. I don't really understand but this is the fault of the SD card library. Because of that I use a larger images to cover what could be 5 or 6 images as it loads faster overall as the search only happens once. You can really see the effect of this on the worst possible screen, the home page because of all the outlet icons. To increase speed on home page some of the smallest images are actually stored on the Arduino instead of SD card as those load instantly.
