prenticedavid
commented
2 years ago 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.
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.