Hi
We have littlevgl_examples under MCUXpresso SDK for Adafruit TFT LCD shield w/Cap Touch V2.3, SPI display. Besides, we don't have other existing demo. User needs to refer our demo to adjust code by self.
There are different versions of Adafruit 2.8" TFT LCD shields. The shields marked v2.0 works directly with this project. For the other shields, please solder the center pin of IOREF pads to the 3.3V pad, and solder the pads 11, 12, and 13.
See the link for details:
https://community.nxp.com/t5/MCUXpresso-Community-Articles/Modifying-the-latest-Adafruit-2-8-quot-LC...
Besides, NXP has partnered with SEGGER Microcontroller to offer high performance embedded graphics libraries in binary form for free commercial use. FYI.
https://www.nxp.com/design/software/embedded-software/nxp-emwin-libraries:EMWIN-GRAPHICS-LIBRARY
Thanks,
Jun Zhang