#include <ESP8266WiFi.h>
#include <ESP8266WebServer.h>
#include <ESP8266mDNS.h>
//Replace the values in the next 3 line to match your network
IPAddress ip(192,168,1,50); //Static IP address for this device.
IPAddress gw(192,168,1,1); //Gateway address. IP address of your router
IPAddress sub(255,255,255,0);//Subnet mask for this network
const String SOFTWARE_VERSION = "1.2";
const char* WIFI_SSID = "YOUR_WIFI_SSID";
const char* WIFI_PASSWORD = "YOUR_WIFI_PASSWORD
const char* DEVICENAME = "garagedoor"; // for this example use garagedoor.local for YOUR_DEVICENAME in the openhab items and rules
const int SENSOR_INFO_LED_PIN = 5;
const int WIFI_INFO_LED_PIN = 2;
const int DEVICE_ACTIVATE_PIN = 4;
const int DEVICE_OPEN_SENSOR_PIN = 12;
const int DEVICE_CLOSE_SENSOR_PIN = 13;
const long ACTIVATE_DURATION = 500;
const long CHECK_WIFI_INTERVAL = 30000;
const long CHECK_SENSORS_INTERVAL = 1000;
unsigned long deviceActivateStart;
unsigned long prevMillisSensors = 0;
unsigned long prevMillisWiFi = 0;
unsigned long currMillis = millis();
MDNSResponder mdns;
ESP8266WebServer server(80);
void setup() {
Serial.begin(115200);
pinMode(SENSOR_INFO_LED_PIN, OUTPUT);
pinMode(WIFI_INFO_LED_PIN, OUTPUT);
pinMode(DEVICE_ACTIVATE_PIN, OUTPUT);
digitalWrite(DEVICE_ACTIVATE_PIN, LOW);
pinMode(DEVICE_OPEN_SENSOR_PIN, INPUT);
pinMode(DEVICE_CLOSE_SENSOR_PIN,INPUT);
connectToWiFi();
}
void loop() {
checkWiFi();
checkDevicesAndSensors();
server.handleClient();
}
void checkWiFi(){
currMillis = millis();
if (currMillis - prevMillisWiFi >= CHECK_WIFI_INTERVAL)
{
Serial.println("Checking WIFI");
prevMillisWiFi = currMillis;
if (WiFi.status() != WL_CONNECTED)
connectToWiFi();
}
}
void connectToWiFi() {
WiFi.config(ip, gw, sub);
WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
Serial.print("Setting up MDNS responder");
while (!mdns.begin(DEVICENAME)) {
delay(1000);
Serial.print(".");
}
Serial.println("");
Serial.println("MDNS responder started");
while (WiFi.status() != WL_CONNECTED) {
digitalWrite(WIFI_INFO_LED_PIN,HIGH);
delay(500);
digitalWrite(WIFI_INFO_LED_PIN,LOW);
delay(500);
}
digitalWrite(WIFI_INFO_LED_PIN,LOW);
Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
server.on("/", serverOk);
server.on("/device/status", HTTP_GET, getDeviceStatus);
server.on("/device/activate", HTTP_POST, activateDevice);
server.on("/version", HTTP_GET, getVersion);
server.begin();
}
void checkDevicesAndSensors() {
checkDevices();
checkSensors();
}
void checkDevices() {
currMillis = millis();
if (digitalRead(DEVICE_ACTIVATE_PIN) == HIGH)
{
if (currMillis - deviceActivateStart >= ACTIVATE_DURATION)
{
Serial.print("Deactivating currMillis = ");
Serial.println(currMillis);
digitalWrite(DEVICE_ACTIVATE_PIN, LOW);
}
}
}
void checkSensors() {
currMillis = millis();
if (currMillis - prevMillisSensors >= CHECK_SENSORS_INTERVAL)
{
Serial.println("Checking Sensors");
prevMillisSensors = currMillis;
if (deviceStatus(DEVICE_OPEN_SENSOR_PIN, DEVICE_CLOSE_SENSOR_PIN)== "AJAR")
{
if (digitalRead(SENSOR_INFO_LED_PIN) == LOW)
digitalWrite(SENSOR_INFO_LED_PIN, HIGH);
}
else
digitalWrite(SENSOR_INFO_LED_PIN, LOW);
}
}
void getDeviceStatus() {
digitalWrite(WIFI_INFO_LED_PIN,HIGH);
server.send(200,"text/plain", deviceStatus(DEVICE_OPEN_SENSOR_PIN, DEVICE_CLOSE_SENSOR_PIN));
digitalWrite(WIFI_INFO_LED_PIN,LOW);
}
void getVersion() {
digitalWrite(WIFI_INFO_LED_PIN,HIGH);
server.send(200,"text/plain", SOFTWARE_VERSION);
digitalWrite(WIFI_INFO_LED_PIN,LOW);
}
void serverOk() {
digitalWrite(WIFI_INFO_LED_PIN,HIGH);
server.send(200,"text/plain","Server Ok...");
digitalWrite(WIFI_INFO_LED_PIN,LOW);
}
String deviceStatus(int OpenSensor, int CloseSensor) {
String state = "AJAR";
if (digitalRead(OpenSensor) == LOW)
state = "OPEN";
else if (digitalRead(CloseSensor) == LOW)
state = "CLOSED";
Serial.print("Device Status = ");
Serial.println(state);
return state;
}
void activateDevice()
{
deviceActivateStart = millis();
Serial.print("Activating deviceActivateStart = ");
Serial.println(deviceActivateStart);
digitalWrite(DEVICE_ACTIVATE_PIN, HIGH);
digitalWrite(WIFI_INFO_LED_PIN,HIGH);
server.send(200,"text/plain", "OK");
digitalWrite(WIFI_INFO_LED_PIN,LOW);
}
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