brianwyld
commented
10 months ago Update :
buttons:
- STR_IO0 is connected both to the button, and used for the shift register that controls signals to the epaper. If you attempt to use it as a general purpose button (eg by polling it frequently), the epaper updates will no longer work. This button is therefore only really useful as the 'boot to download mode' selection
SD card
- using machine.SoftSPI and the SDCard class from sdcard.py (NOT the machine.SDCard one) will work, although it still gives a timeout sometimes. See the micropython fourm discussion for more.
Our project aims to use the T5-4.7-S3, with a micropython application. I have flashed the ESP32 with a build from the latest micropython, to which I added the epaper drivers and a micropython wrapper (which is still a work in progress as I attempt to get the driver to work without resetting the card)
However, I cannot get 2 basic features to work:
cannot get interrupt callback for button presses (IO0/IO21) The micropython code runs, I can read the button values correctly (1 when released, 0 when pressed), but the callback on rising or falling edge never happens, for IO0 or IO21. The same code on a different ESP32 board works correctly. See; https://github.com/orgs/micropython/discussions/12215 Anyone got this to work? btw, why is the STR_IO0 connected twice to the ESP32? (IO0 and IO46)?
cannot get SD card driver to mount the SD card I'm assuming the SD card is connected as a 1 bit SPI interface? But using the micropython machine.sdcard module doesn't manage to mount it in any mode I have tried... See https://github.com/orgs/micropython/discussions/11460 Anyone got the SD card to work in micropython?
thanks!