HYSTM32_28 examples

Ah, thank you. This was the Demo I was looking for.
I'm beginning to wonder if I got the right hardware. :-/
I have a 2.8" inch display version (better fit for my project)

The hardware difference seems to be with the SPI pins. At least with the Project 2 code that also sends SPI to the LED strips.
But the Touchscreen code specifically for the 2.8" version also does not run.

I was not too concerned with that, because I thought the SPI stuff is just for the Touchscreen input. The Display should work independently.
Right assumption?

This does not look right: (after loading the Touchscreen demo)

>dump();                                     
var LCD = {};
function onInit() {
  SPI1.setup({sck:A5,miso:A6,mosi:A7})
  SPI1.send([0x90,0],A4); // just wake the controller up
}
function touchFunc() {
  if (!digitalRead(C13)) { // touch down
    var d = SPI1.send([0x90,0,0xD0,0,0],A4);
    var pos = {x:LCD.getWidth()-(d[1]*256+d[2])*LCD.WIDTH/0x8000,
               y:(d[3]*256+d[4])*LCD.getHeight()/0x8000};
    touchCallback(pos.x, pos.y);
    lastPos = pos;
  } else lastPos = null;
}
function touchCallback(x,y) {
  if (lastPos!=null) {
    LCD.drawLine(x,y,lastPos.x,lastPos.y,0xFFFF);
  }
}
var lastPos = null;
setInterval(touchFunc, 50);
SPI1.setup({"sck":A5,"miso":A6,"mosi":A7});
=undefined
>SPI1
={"_options":{"sck":A5,"miso":A6,"mosi":A7}}
>LCD
={}
> 

I suppose LCD should get initialised by boards/HYSTM32_28.py?
I would not exactly expect a empty object.
Is there any way how I can interactively check if the board specific variables are set right?

PS: Screen stays grey throughout. When I bought the board it ran a demo, that displayed fine in case it could be some analogue trimming issue.