Search:

@KurtE
The 32gb card I am using has a Rpi4 Ubuntu image on it and seems to work. The EVO version of the SDCards seem to have a problem - think Paul was having the same issue with Lexar? EVO card.
...

Sounds good - just double checked it with the TeensyBackpack SD card reader with the ILI9488 and its working at 16Mhz as well. So at least that's with 2 different card readers.

Yep thats what I did. You could also do what @WMXZ suggested and use SD.sdfs.begin(SdSpiConfig(csPin, SHARED_SPI, SD_SCK_MHZ(16))) directly in place of
SD.begin(ChipSelect).

For...

Great and good luck - besides issue 2 noticed issue 1 as well which was a bit annoying but didn't remember if it did it before or not so never reported it. Sorry.

@KurtE



Just a quick update. Retested ILI9341 and ILI9488 (with tri-state buffer chip on MISO line) at 16Mhz clock with a 32Gb SD card on a T3.2. SUCCESS - both are working at the lower clock...

Ok did a bit more testing this morning on the T3.2 using a 32GB sd card using the ST7789 240x320 display.

Tried 2 different external readers and the internal reader and all three cases failed. ...

Oops 512gb. Have to fix

Using my standard 32gb card. As long as I am not accessing the display it does read the card. Not sure what is going on - power issue - clocking?

EDIT: remember this is with a ILI9488 display...

Testing with SansDisk Extreme 512Gbmicro SD:

Builtin_SDCARD Cardinfo:

Initializing SD card...Wiring is correct and a card is present.

Card type: SDHC
Volume type is FAT64

Volume size...

Ok with a tri-state buffer doesn't seem to work. So I added a tri-state buffer to the MISO line on the ILI9488 and tested with an external card on the T3.2, T3.5 and T4.1:
1. T3.2: No luck - keep...

Cool that was my next try - did try the HX display but for some reason not working with the t3.2. Right now trying the tristate buffer but that didnt work with the ILI9488 with the t3,2

Think...

@KurtE - darn it - forgot about that - but thats probably it - when I designed my boards I used a tri-state buffer to get it to work - damn - maybe will try another display

Just ran into an interesting issue with a T3.2.

Use Case:

Adafruit micro-sd breakout - running listfiles on a SansDisk 128mb card works no issue by itself
ILI9488 - graphicstest works no...

That will be cool - will definitely help with existing code and developing new code.

Thats good news but maybe should be a warning or note maybe in the wiki or someplace.