For those looking for the datasheets of the screen and touch controllers, see 240x240 Round IPS TFT LCD Display 1.28" Capactive Touch Circle Screen at Buy Display.
Notable differences are:
- Screen GC9A01A SPI controller: SPI MISO is not implemented on the screen, so reading a pixel is not possible.
- Touch CST816S I²C controller: automatic low power mode is on, direct read gives 5 bytes for number, event, x, 0, y.
Enjoy!