Thank you for you help,

now I solved the problem with esp32_digital_led_lib library.

Example:
[CODE]
#include "esp32_digital_led_lib.h"

// Enumberation ob LED's
// 9 0
// 8 1
// 7 2
// 6 3
// 5 4

#define LED_PORT 15

strand_t m_sLeds = {.rmtChannel = 0, .gpioNum = 15, .ledType = LED_WS2812B_V3, .brightLimit = 32, .numPixels = 10, .pixels = nullptr, ._stateVars = nullptr};

void Led_Init(void) {
pinMode (LED_PORT, OUTPUT);
digitalWrite (LED_PORT, LOW);

if(digitalLeds_initStrands(&m_sLeds, 1)) {
    E_TRACE("Can't init LED driver()\n");
}

digitalLeds_resetPixels(&m_sLeds);

// Set led 7 to red
m_sLeds.pixels[7] = pixelFromRGBW(55, 0, 0, 0);

digitalLeds_updatePixels(&m_sLeds);

}

[/CODE]

Thank you for you help,

now I solved the problem with esp32_digital_led_lib library.

Example:
[CODE]
#include "esp32_digital_led_lib.h"

// Enumberation ob LED's
// 9 0
// 8 1
// 7 2
// 6 3
// 5 4

#define LED_PORT 15

strand_t m_sLeds = {.rmtChannel = 0, .gpioNum = 15, .ledType = LED_WS2812B_V3, .brightLimit = 32, .numPixels = 10, .pixels = nullptr, ._stateVars = nullptr};

void Led_Init(void) {
pinMode (LED_PORT, OUTPUT);
digitalWrite (LED_PORT, LOW);

if(digitalLeds_initStrands(&m_sLeds, 1)) {
    E_TRACE("Can't init LED driver()\n");
}

digitalLeds_resetPixels(&m_sLeds);

// Set led 7 to red
m_sLeds.pixels[7] = pixelFromRGBW(55, 0, 0, 0);

digitalLeds_updatePixels(&m_sLeds);

}

[/CODE]

Hi,
how can i use the RGB LED's with the new M5 FIRE. I try the Adafruit_NeoPixel library for the SK6812 but my m5 crash at start up.

code:
#include "esp_deep_sleep.h"

Adafruit_NeoPixel strip = Adafruit_NeoPixel(10, 15, NEO_KHZ400);

void setup() {
strip.setBrightness(50);
strip.begin();
strip.setPixelColor(1, 255, 255, 255);
}

Does somebody has any idea?

Thanks.