3,5Inch RPI display 480 320 XPT2046 touch not working

[jnivard]

Hai

I try to get a display working using a ESP32 Wroom32 DevKit V1. The display is working ok but the touch is not reacting
To get started I used the instructions from jarutex at : https://www.jarutex.com/index.php/2021/12/24/8919/ using the following setup: (see below).

When I run the TouchTest program I recieve the following output: x:2352 y:3347 z 5025 and the values change a litle bit, but do not react on a touch of the screen. Demo_3D_cube is working fine

#define RPI_DISPLAY_TYPE ok
#define ILI9486_DRIVER ok
#define TOUCH_CS 18 ok Chip select Touch
#define TFT_MISO 2 ok
#define TFT_MOSI 12 ok
#define TFT_SCLK 14 ok clock signal
#define TFT_CS 5 ok Chip select signal TFT
#define TFT_DC 15
#define TFT_RST 13

#define LOAD_GLCD
#define LOAD_FONT2
#define LOAD_FONT4
#define LOAD_FONT6
#define LOAD_FONT7
#define LOAD_FONT8
#define LOAD_GFXFF
#define SMOOTH_FONT
#define SPI_FREQUENCY 26000000
#define SPI_TOUCH_FREQUENCY 2500000

I have checked the wiring and have a collor coding for each wire and that seems not the problem. I did buy the display from aliexpress. It looks like the display of https://www.waveshare.com/3.5inch-RPi-LCD-A.htm, but it is some clone.
3.5 Inch Tft Lcd Contact Screen 320X480 Resolutie Abs Case + Touchpen Voor Raspberry Pi 4 B https://nl.aliexpress.com/item/1005003983760114.html?spm=a2g0o.order_list.order_list_main.17.5b2279d2eSeiKH&gatewayAdapt=glo2nld

I like to know How I can proceed from here

[Bodmer]

Try moving the MISO signal to a different pin, say pin 4. Pin 2 is connected to an LED.

Try dropping the touch SPI frequency to 1000000

[jnivard]

Hai Thanks for your reply

It is not helping, I reduced the SPI frequency and moved the pin 2 to 4 but it has the only effect that the demo of the cube is moving slowly. It has no effect on the TouchTest the readings are in the range of x:2352 y:3347 z 5025 and touching the screen has no effect. I lowerd also the frequency SPI_TOUCH_FREQUENCY but it has no effect. I did buy two boards and used thy other board and now it is working ok, many thanks for your excelend work. I will try to make a PCB board for the PY case using the ESP32 development board and will chare the result with you.

Many thanks John