Alexa Push button Tutorial: https://help.sinric.pro/pages/tutorials/doorbell

sinricpro-doorbell-alexa-googlehome.ino

// Uncomment the following line to enable serial debug output
//#define ENABLE_DEBUG

#ifdef ENABLE_DEBUG
  #define DEBUG_ESP_PORT Serial
  #define NODEBUG_WEBSOCKETS
  #define NDEBUG
#endif 

#include <Arduino.h>
#if defined(ESP8266)
  #include <ESP8266WiFi.h>
#elif defined(ESP32) || defined(ARDUINO_ARCH_RP2040)
  #include <WiFi.h>
#endif

#include "SinricPro.h"
#include "SinricProDoorbell.h"

// Grab it from https://portal.sinric.pro.
#define APP_KEY    "" //Should look like "de0bxxxx-1x3x-4x3x-ax2x-5dabxxxxxxxx"
#define APP_SECRET "" //Should look like "5f36xxxx-x3x7-4x3x-xexe-e86724a9xxxx-4c4axxxx-3x3x-x5xe-x9x3-333d65xxxxxx"
#define DOORBELL_ID  "" //Should look like "6534xxxxxxxc08c6ea1b"

#define SSID       "" // Your WiFi SSID
#define PASS       "" // Your WiFi Password 

#define BAUD_RATE         115200                // Change baudrate to your need

#if defined(ESP8266)
  #define BUTTON_PIN        D4
#elif defined(ESP32) 
  #define BUTTON_PIN        34
#elif (ARDUINO_ARCH_RP2040)
  #define BUTTON_PIN        7
#endif

int button_state;
int lastbutton_state = LOW;

unsigned long last_debounce_time = 0;
unsigned long debounce_delay = 50; // increase if needed.
SinricProDoorbell& myDoorbell = SinricPro[DOORBELL_ID];

void handleButtonPress() {
  int reading = digitalRead(BUTTON_PIN);  
  if (reading != lastbutton_state) {
    last_debounce_time = millis();
  }

  if ((millis() - last_debounce_time) > debounce_delay) {
    if (reading != button_state) {
      button_state = reading;
      
      if (button_state == HIGH) {
        Serial.printf("[handleButtonPress()]: Button pressed!\r\n");
        bool success = myDoorbell.sendDoorbellEvent();
        if(!success) {
          Serial.printf("[handleButtonPress()]: Something went wrong...could not send Event to server!\r\n");
        }        
      }
    }
  }
  
  lastbutton_state = reading;
}
 
void setupWiFi() {
  Serial.printf("\r\n[setupWiFi()]: Connecting");

  #if defined(ESP8266)
    WiFi.setSleepMode(WIFI_NONE_SLEEP); 
    WiFi.setAutoReconnect(true);
  #elif defined(ESP32)
    WiFi.setSleep(false); 
    WiFi.setAutoReconnect(true);
  #endif

  WiFi.begin(WIFI_SSID, WIFI_PASS);

  while (WiFi.status() != WL_CONNECTED) {
    Serial.printf(".");
    delay(250);
  }
  IPAddress localIP = WiFi.localIP();
  Serial.printf("connected!\r\n[setupWiFi()]: IP-Address is %d.%d.%d.%d\r\n", localIP[0], localIP[1], localIP[2], localIP[3]);
}
 
void setupSinricPro() {
  SinricPro.onConnected([](){ Serial.printf("Connected to SinricPro\r\n"); }); 
  SinricPro.onDisconnected([](){ Serial.printf("Disconnected from SinricPro\r\n"); });
  SinricPro.begin(APP_KEY, APP_SECRET);
}

void setupButton() {
  pinMode(BUTTON_PIN, INPUT);
}

void setup() {
  Serial.begin(BAUD_RATE); Serial.printf("\r\n\r\n");
  setupButton();
  setupWiFi();
  setupSinricPro();
}

void loop() {
  handleButtonPress();
  SinricPro.handle();
}