ESP32 Forum

Hello,

I am trying to build the "peripherals/lcd/spi_lcd_touch" example for the https://www.waveshare.com/wiki/ESP32-S3-Touch-LCD-1.28 board.

I was able to run this example https://github.com/espressif/esp-idf/tr ... _lcd_touch successfully but I cannot figure out how to enable the touch feature.

This is the controller for the board I used https://github.com/espressif/esp-bsp/tr ... ch_cst816s

After following these instructions I can detect the touch but X and Y coordinates are always 0.

Then I figured this is a I2C protocol which is not configured at all as in this example:
https://github.com/MohammedBENHADINE/cst816d_test
Unfortunately this one also does not work and it is complaining the i2c driver is too old. Also this code freezes often once I touch the screen.

I changed it to the newer version following this example to configure I2C Bus master and device
https://github.com/espressif/esp-idf/tr ... d/i2c_oled

Here is the final version so far: https://github.com/oshmykov-dev/esp-idf ... _lcd_touch

Steps to build: Observe the animation is working fine and the touch is detected but it is always returning "touch pressed = 0 , x = 0 , y=16329" in the logs. The numbers do not ever change.

If you have any general thoughts like what components or steps are required to configure this board correctly or a working code please share. Thank you very much for any help.

https://files.waveshare.com/wiki/ESP32- ... 28-Sch.pdf
https://www.buydisplay.com/download/ic/GC9A01A.pdf
https://www.buydisplay.com/download/ic/ ... S_V1.3.pdf

Here is the fixed 'hello world' example for the ESP32-S3-Touch-LCD-1.28.

https://github.com/oshmykov-dev/cst816d_test

I moved the main loop from the original repository to a separate task which helped to avoid freeze and set levels.reset to 0 as in the original documentation.

The esp_lcd_touch_cst816s.c uses the old version of i2c.h and that's probably why it didn't work in the lcd touch example.

Hi,
How did you get the touch chip CST816S to show up in the menuconfig?

I can only see STMPE610.

I tried install the touch component but still doesn't show in menuconfig.

Sorry if a bit of a silly question, but driving me a bit crazy.

Sorted it out by adding to the menu configs - now see how all that works.

Also changed the code to add compiler ifdef for my chip and its working.

Thanks,