LED and Button

This section demonstrates LED basic functionalities and button support. A button event is captured and translated to 5 LED states: OFF, RED, BLUE, GREEN, WHITE.

// WS2813C
#include "ezWS2812gpio.h"

const pins_t myBoard = boardArduinoNanoMatter;

// WS2813
ezWS2812gpio myRGB(1, myBoard.ledData);

int inPin = 19;    // pushbutton connected to digital pin 19
int val = 0;      // variable to store the read value
int toggle = 0;   
void setup()
{
    pinMode(inPin, INPUT);    // sets the digital pin 7 as input

    myRGB.begin();
    myRGB.set_pixel(0, 0, 0);

    while(1)
    {
        val = digitalRead(inPin);

        if (val)
        {
             toggle = (toggle + 1) % 4;

             switch (toggle)
             {
                 case 1:
                    delay(500);
                    myRGB.set_pixel(64, 0, 0); 
                 case 2:
                    delay(500);
                    myRGB.set_pixel(0, 64, 0); 
                 case 3:
                    delay(500);
                    myRGB.set_pixel(0, 0, 64); 
                     break;
                 case 4:
                    delay(500);
                    myRGB.set_pixel(64, 64, 64); 
                     break;
                 default:
                    delay(500);
                    myRGB.set_pixel(0, 0, 0);
                    break; 
        }
    }
}

A more extensive LED demo can be found here: https://github.com/PervasiveDisplays/PDLS_EXT4_Basic_Matter/tree/main/examples/EXT4