Hi, Chris,
Because there is MMA8652 accelerator sensor on the LPC55S69-EVK, so there is driver and example code based IIC driver for LPC55S69 in SDK package as the following Fig:
But because LPC family has on-chip LCD controller for some processor, so we do not have ILI9341 chip on LPC board, so I suppose that we do not have driver of ILI9341 chip in SDK package.
Hope it can help you
BR
XiangJun Rong