the screen is an older version of the https://www.adafruit.com/product/1983 (26 pin header ) but I have been able to get it working on an ESP8266 (via Arduino - have not tried Micropython)
In the Micro/CircuitPython tutorial for this type of display:
there is a note that SPI and the ILI9341 are not working yet on the SAMD21 boards:
Note the beta SAMD21 MicroPython port currently has an issue with using the ILI9341 module & SPI interface. Stick with using the ESP8266 or other MicroPython boards for now!
This looks like a pretty clear statement that I should not expect it to work - and it doesn't ;-)
Is the current driver only working on the ESP8266?
I was just wondering if someone could confirm that this incompatibility still exists and is a known issue.
If so, I'll move onto other projects. If it should be working, I'll post some more gory details. It's not pretty....
Thanks for all the work and support on CircuitPython.