ESP32 project using Google Assistant Alexa & Sinric

#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 "SinricProSwitch.h"
#include <map>

#define WIFI_SSID         ""
#define WIFI_PASS         ""
#define APP_KEY           "497d54da-bcfe-4615-ba8b-373471c1XXXX"
#define APP_SECRET        "7728ee8f-6d4d-41a5-985b-75a6500e94fa-e5091d67-373a-48f9-8525-5573eXXXXXX"

// comment the following line if you use a toggle switches instead of tactile buttons

#define BAUD_RATE   115200

#define DEBOUNCE_TIME 250
  
#define RELAYPIN_1 23
#define RELAYPIN_2 22
#define RELAYPIN_3 21

typedef struct {      // struct for the std::map below
  int relayPIN;
  int flipSwitchPIN;
  bool activeLow;
} deviceConfig_t;

// this is the main configuration
// please put in your deviceId, the PIN for Relay and PIN for flipSwitch
// this can be up to N devices...depending on how much pin's available on your device ;)
// right now we have 4 devicesIds going to 4 relays and 4 flip switches to switch the relay manually
std::map<String, deviceConfig_t> devices = {
    //{deviceId, {relayPIN,  flipSwitchPIN, activeLow}}
    {"65c43317ccc93539a13550ac", {  23, 13, true }},
    {"65c432eab0a460b25b3ecb54", {  22, 12, true }},
    {"65c4334bb0a460b25b3ecbba", {  21, 14, true }},
       
};

typedef struct {      // struct for the std::map below
  String deviceId;
  bool lastFlipSwitchState;
  unsigned long lastFlipSwitchChange;
  bool activeLow;
} flipSwitchConfig_t;

std::map<int, flipSwitchConfig_t> flipSwitches;    // this map is used to map flipSwitch PINs to deviceId and handling debounce and last flipSwitch state checks
                                                  // it will be setup in "setupFlipSwitches" function, using informations from devices map

void setupRelays() { 
  for (auto &device : devices) {           // for each device (relay, flipSwitch combination)
    int relayPIN = device.second.relayPIN; // get the relay pin
    pinMode(relayPIN, OUTPUT);             // set relay pin to OUTPUT
    digitalWrite(relayPIN, HIGH);
  }
}

void setupFlipSwitches() {
  for (auto &device : devices)  {                     // for each device (relay / flipSwitch combination)
    flipSwitchConfig_t flipSwitchConfig;              // create a new flipSwitch configuration

    flipSwitchConfig.deviceId = device.first;         // set the deviceId
    flipSwitchConfig.lastFlipSwitchChange = 0;        // set debounce time
    flipSwitchConfig.lastFlipSwitchState = false;     // set lastFlipSwitchState to false (LOW)
    int flipSwitchPIN = device.second.flipSwitchPIN;  // get the flipSwitchPIN
    bool activeLow = device.second.activeLow;         // set the activeLow
    flipSwitchConfig.activeLow = activeLow;           
    flipSwitches[flipSwitchPIN] = flipSwitchConfig;   // save the flipSwitch config to flipSwitches map
    
    if(activeLow) {
      pinMode(flipSwitchPIN, INPUT_PULLUP);           // set the flipSwitch pin to INPUT_PULLUP
    }
    else {
      pinMode(flipSwitchPIN, INPUT);                  // set the flipSwitch pin to INPUT  
    } 
  }
}

bool onPowerState(String deviceId, bool &state) {
  Serial.printf("%s: %s\r\n", deviceId.c_str(), !state ? "on" : "off");
  int relayPIN = devices[deviceId].relayPIN; // get the relay pin for corresponding device
  digitalWrite(relayPIN, !state);             // set the new relay state
  return true;
}

void handleFlipSwitches() {
  unsigned long actualMillis = millis();                                          // get actual millis
  for (auto &flipSwitch : flipSwitches) {                                         // for each flipSwitch in flipSwitches map
    unsigned long lastFlipSwitchChange = flipSwitch.second.lastFlipSwitchChange;  // get the timestamp when flipSwitch was pressed last time (used to debounce / limit events)

    if (actualMillis - lastFlipSwitchChange > DEBOUNCE_TIME) {                    // if time is > debounce time...

      int flipSwitchPIN = flipSwitch.first;                                       // get the flipSwitch pin from configuration
      bool lastFlipSwitchState = flipSwitch.second.lastFlipSwitchState;           // get the lastFlipSwitchState
      bool activeLow = flipSwitch.second.activeLow; 
      bool flipSwitchState = digitalRead(flipSwitchPIN);                          // read the current flipSwitch state
      if(activeLow) flipSwitchState = !flipSwitchState;

      if (flipSwitchState != lastFlipSwitchState) {                               // if the flipSwitchState has changed...
#ifdef TACTILE_BUTTON
        if (flipSwitchState) {                                                    // if the tactile button is pressed 
#endif      
          flipSwitch.second.lastFlipSwitchChange = actualMillis;                  // update lastFlipSwitchChange time
          String deviceId = flipSwitch.second.deviceId;                           // get the deviceId from config
          int relayPIN = devices[deviceId].relayPIN;                              // get the relayPIN from config
          bool newRelayState = !digitalRead(relayPIN);                            // set the new relay State
          digitalWrite(relayPIN, newRelayState);                                  // set the trelay to the new state

          SinricProSwitch &mySwitch = SinricPro[deviceId];                        // get Switch device from SinricPro
          mySwitch.sendPowerStateEvent(newRelayState);                            // send the event
#ifdef TACTILE_BUTTON
        }
#endif      
        flipSwitch.second.lastFlipSwitchState = flipSwitchState;                  // update lastFlipSwitchState
      }
    }
  }
}

void setupWiFi() {
  Serial.printf("\r\n[Wifi]: 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);
  }
  
  Serial.printf("connected!\r\n[WiFi]: IP-Address is %s\r\n", WiFi.localIP().toString().c_str());
}

void setupSinricPro() {
  for (auto &device : devices) {
    const char *deviceId = device.first.c_str();
    SinricProSwitch &mySwitch = SinricPro[deviceId];
    mySwitch.onPowerState(onPowerState);
  }

  
  SinricPro.begin(APP_KEY, APP_SECRET);  
}

void setup() {
  Serial.begin(BAUD_RATE);
  setupRelays();
  setupFlipSwitches();
  setupWiFi();
  setupSinricPro();
}

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