HomeDynamicv3/hardware/hds_4-way-relay/firmware/4xrelay/4xrelay.ino

/*

   Home Dynamic System v3

   4-way relays
   Hardware reference design

   Author: tobychui

   Compile with Wemos D1 mini board manager
   This project require LittleFS to store the device configuration
   json file. Install the LittleFS Uploader plugin here
   https://github.com/earlephilhower/arduino-esp8266littlefs-plugin
*/

#include <WiFiManager.h>
#include <ArduinoJson.h>
#include <ESP8266WiFi.h>
#include <ESP8266mDNS.h>
#include <ESP8266WebServer.h>
#include "LittleFS.h"

// Device Configs, required by HDSv3
#define DEVICE_NAME "hds_4xRelay"    //The name of this IoT device
#define LISTENING_PORT 12110        //The port where this IoT device listen
String deviceUUID = ""; //Device UUID is generated base on devcie MAC address

// Output shift register pints
const int RELAY_1 = D0;
const int RELAY_2 = D5;
const int RELAY_3 = D6;
const int RELAY_4 = D7;

bool relayStatus[4] = {false, false, false, false};

//WiFi Related
WiFiManager wifiManager;
ESP8266WebServer server(LISTENING_PORT);

//Update relay status update the relay physical state base on relay status array
void updateRelayStatus(){
  if (relayStatus[0]){
    digitalWrite(RELAY_1, HIGH);
  }else{
    digitalWrite(RELAY_1, LOW);
  }

  if (relayStatus[1]){
    digitalWrite(RELAY_2, HIGH);
  }else{
    digitalWrite(RELAY_2, LOW);
  }

  if (relayStatus[2]){
    digitalWrite(RELAY_3, HIGH);
  }else{
    digitalWrite(RELAY_3, LOW);
  }

  if (relayStatus[3]){
    digitalWrite(RELAY_4, HIGH);
  }else{
    digitalWrite(RELAY_4, LOW);
  }
    
}

void setup() {
  Serial.begin(115200);

  //Load device UUID
  deviceUUID = WiFi.macAddress();
  deviceUUID.replace(":", "-");

  //Initialize the pins. Set all to low
  pinMode(RELAY_1, OUTPUT);
  digitalWrite(RELAY_1, LOW);

  pinMode(RELAY_2, OUTPUT);
  digitalWrite(RELAY_2, LOW);

  pinMode(RELAY_3, OUTPUT);
  digitalWrite(RELAY_3, LOW);

  pinMode(RELAY_4, OUTPUT);
  digitalWrite(RELAY_4, LOW);

  //Start HDSv2 services
  initHds3Services();
}

void loop() {
  server.handleClient();
  MDNS.update();
}