Drawing on ILI9341 y coordination mirror ?

Posted on Wed 23rd, April 2014

• #1

JumJum

Using this code, it looks like y is starting from bottom not from top as it was before.
String looks like being mirrored.
Tested with last nightly build (1v62)

var g,p,n,d;
function firstDraw(){
  g.setBgColor(0.8,0.8,0.8);
  g.clear();
  g.setFontVector(24);
  g.drawString("Espruino",10,10);
  g.fillRect(40,40,100,100);
}
SPI2.setup({sck:B13, miso:B14, mosi:B15, baud: 1000000});
g = require("ILI9341").connect(SPI2,C6,C7,C8,firstDraw);

• #2

Gordon

Hmm. Try g.setRotation(0,true) or g.setRotation(2,true).

Not sure why it would just start doing it though :(
• #3

JumJum

Tried rotation (from 0 to 3, true) with drawRect(0,10,20,30) and got:
0: 219,10,239,30
1: 209,299,229,319
2: 0,289,20,309
3: 10,0,30,20
next tried rotation(from 0 to 3,false) with drawRect(0,10,20,30) and got:
0: 0,10,20,30
1: 209,0,229,20
2: 219,289,239,309
3: 10,299,30,319

So, in my case setRotation(0,false) seems to be correct.
• #4

Gordon

Interesting - just checked this and the default value for setRotation isn't initialised - so it can get filled with all kinds of stuff. 1v62 will have this fixed.

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Drawing on ILI9341 y coordination mirror ?

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Drawing on ILI9341 y coordination mirror ?

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Drawing on ILI9341 y coordination mirror ?

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Drawing on ILI9341 y coordination mirror ?

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Espruino