Sunton ESP32-2432S028R 320 x 240 Pixel TFT-Touch-Display accessible IO-Pins?

[StefanL38]

Hello Everybody,

somemonhs ago I bought a Sunton ESP32-2432S028R 320 x 240 Pixel TFT-Touch-Display

I was able to get SD-Card and Touch-function to work like described in this thread

ESP32-2432S028R all in one display, Touch SPI problems

HI @nfoliveira, I looked into the file TFT_eTouchUser.h There are some lines # ifdef TOUCH_CS #error undef TOUCH_CS in TFT_eSPI User_Setup.h for using TFT_eTouch # endif as explained in the above posting these lines make no sense to me. So I tried the following I simply commented out these lines //# ifdef TOUCH_CS //#error undef TOUCH_CS in TFT_eSPI User_Setup.h for using TFT_eTouch //# endif and voilà the code from user fairfield compiles! This is the modified file TFT_eTouchUser.h #…

So today I took out the display and tried to find out which IO-pins are accessible
I found this pin-out-picture for the display

GPIO21 is switching the backlight. So not really usable except for switching on / off the backlight.

GPIO22 does work. Tested blinking a LED.
GPIO35 is input only works
GPIO27 works too. Tested blinking a LED

hm .... well ---- not much io-pins left

So mainly only usable for displaying data received through WiFi.

Does anybody know what

GPIO26 is used for?
Is it connected to the speaker-socket?

best regards Stefan