Uno ESP32 - Can't get button_simple to work

[sparx266]

Hello

I'm having trouble getting the button_simple example to work with this library.
I'm using a 2.4" parallel shield type display.
Calibrating on an UNO gives this result:

*** COPY-PASTE from Serial Terminal:
const int XP=6,XM=A2,YP=A1,YM=7; //240x320 ID=0x9341
const int TS_LEFT=200,TS_RT=917,TS_TOP=188,TS_BOT=922;

PORTRAIT CALIBRATION 240 x 320
x = map(p.x, LEFT=200, RT=917, 0, 240)
y = map(p.y, TOP=188, BOT=922, 0, 320)

LANDSCAPE CALIBRATION 320 x 240
x = map(p.y, LEFT=188, RT=922, 0, 320)
y = map(p.x, TOP=917, BOT=200, 0, 240)

Calibrating on the ESP32 UNO gives this:

*** COPY-PASTE from Serial Terminal:
const int XP=6,XM=A2,YP=A1,YM=7; //240x320 ID=0x9341
const int TS_LEFT=199,TS_RT=921,TS_TOP=183,TS_BOT=910;

PORTRAIT CALIBRATION 240 x 320
x = map(p.x, LEFT=199, RT=921, 0, 240)
y = map(p.y, TOP=183, BOT=910, 0, 320)

LANDSCAPE CALIBRATION 320 x 240
x = map(p.y, LEFT=183, RT=910, 0, 320)
y = map(p.x, TOP=921, BOT=199, 0, 240)

I can draw using ESP32Test Touch from the s60sc forked version of the touchscreen library but the display seems reversed.

Any ideas what is going wrong?

Thank you.

[prenticedavid]

Bear in mind that ESP32 does not have pre-defined Dnn and Ann pins. When you use pinMode() you use the appropriate GPIOnn numbers. e.g. D6 on Uno is GPIO27 on ESP32.
This is a comparison between Uno and ESP32 on one specific Shield.

//MCUFRIEND_kbv ID=0x9488  320 x 480      Red 3.95 inch XXXX_Calibration
const int XP=6,XM=A2,YP=A1,YM=7; //320x480 ID=0x9488
const int TS_LEFT=851,TS_RT=140,TS_TOP=704,TS_BOT=66;

//MCUFRIEND_kbv ID=0x9488  320 x 480      Red 3.95 on ESP32
const int XP=27,XM=15,YP=4,YM=14; //320x480 ID=0x9488
const int TS_LEFT=858,TS_RT=105,TS_TOP=923,TS_BOT=13;

Note that Adafruit's TouchScreen.h does not work very well on ESP32.
You should find that TouchScreen_kbv.h is "better" but not perfect.

David.