I think Espressif changed ESP32 library, so we dosn't access GPIO port pins directly.

[GokhanAyberk]

Rules

1. Post your code
2. Post a picture of the problem and describe what you expect to see
3. Run the pattern test and post the result as gif/video (need to have a bit more than one full RED/YELLOW/WHITE cycle)
4. State what version of PxMatrix you are running and what MicroController you use

Hi Dominic
I think my issue general
I am using latest version and ESP32 wroom-DA.
My sketch was working very good. But I had this error after esp32 board lib update now,
""
/home/gokhan/Arduino/libraries/PxMatrix_LED_MATRIX_library/PxMatrix.h:83:29: error: 'GPIO' was not declared in this scope
83 | #define GPIO_REG_SET(val) GPIO.out_w1ts = val
| ^~~~
/home/gokhan/Arduino/libraries/PxMatrix_LED_MATRIX_library/PxMatrix.h:408:5: note: in expansion of macro 'GPIO_REG_SET'
408 | GPIO_REG_SET(1 << _LATCH_PIN);
| ^~~~~~~~~~~~
""

I think Espressif changed ESP32 library, so we dosn't access GPIO port pins directly.

I tried to fix like;
#include "hal/gpio_ll.h" ;
#include <PxMatrix.h>

but it doesn't work. Any suggestion?
Thank you.

[GokhanAyberk]

I solved my issue, The other change was in the timer object use

1. I added (#include "hal/gpio_ll.h" ;) line for direct access to GPIO pins
2. I chagged my timer usage.
   void display_update_enable(bool is_enable) {
   timer = timerBegin(1000000);
   timerAttachInterrupt(timer, &display_updater);
   timerAlarm(timer, 4000, true,0);
   timerStart(timer);
   }

[sseodate]

i change back FW ESP32 3.xx to 2.xx and all is ok.