x, y coordinates are flipped compared to FT5336 touch screen and Arduino library

[BlitzCityDIY]

i've been working with the new revision 3.5" TFT breakout that uses this display along with the FT5336 touch screen driver. i've found that the touch screen coordinates and the display coordinates in CircuitPython do not match by default. However, in Arduino they do match.

0, 0 for the FT5336 and Arduino is here:

whereas by default in CircuitPython it's here:

additionally, in arduino the display defaults to 320x480. this matches the incoming x and y values from the FT5336.

as a workaround, i rotated the display by 90 and used flip_y and flip_x in the touchpaint example:

display = HX8357(display_bus, width=320, height=480, rotation=90)
...
tile_grid.flip_y = True
tile_grid.flip_x = True

i'm a little concerned that end users will bump into this and be confused so i'm curious if there is a way to update the library to account for this?

[makermelissa]

Since you made it a separate library, you should just be able to use math to flip the result. Something like x = width - x.