Core2: WS2812 and interrupter

sheepDog

Hello,

I use a lot of own libraries to control my home. Last library was a small extension of Adafruit_NeoPixel to show some status information.

I tested with four libraries (M5Core2.h, Wifi.h, Adafruit_NeoPixel.h and my lib) with a small test program with Arduino IDE and it worked fine. I used 16*16 led ws2812.

Then a changed back to my ESP-IDF and use the some libraries and some more stuff. If I started to switch some less on my WS2812 in green color, it worked 4 or 5 times without problems. At the next one switching event I got a problem on the second half of the leds:

Some switch the color from green to blue
Some led switch incorrect on

The first 100 to 120 leds all always correct. I think it is a interrupt problem, but in then Adafruit_NeoPixel.h interrupts stopped. I double-checked if this part worked:

  // NRF52 may use PWM + DMA (if available), may not need to disable interrupt
#if !( defined(NRF52) || defined(NRF52_SERIES) )
  noInterrupts(); // Need 100% focus on instruction timing
#endif

I also stop interrupts im my library for the critical part, but it didn't work. My unfounded suspicion is a unstoppable interrupt in M5Core2.h or similar.

Do anyone have an idea?