Smart Climate rev_01

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    - Project: Smart Climate
    - Source Code NOT compiled for: ESP32 DevKit V1
    - Source Code created on: 2024-09-28 18:53:06

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
    /* Connect to wifi, print ip address on first line of */
    /* display, monitor temperatures and humidity for all */
    /* 3 zones and print each sensor on a new line,  when */
    /* temperature lower than 21C, activate corresponding */
    /* relay, when temp over 23 C, turn off the relay */
/****** SYSTEM REQUIREMENT 2 *****/
    /* emulate a webserver that will print values for */
    /* each zone and include a toggle switch and for each */
    /* relay, in the webpage add the ability to turn on */
    /* relays based on temperature or a timer */
/****** END SYSTEM REQUIREMENTS *****/

/****** DEFINITION OF LIBRARIES *****/
#include <Wire.h>
#include <Relay.h>  //https://github.com/rafaelnsantos/Relay
#include <U8g2_for_Adafruit_GFX.h>  //https://github.com/olikraus/U8g2_for_Adafruit_GFX
#include <Adafruit_SSD1306.h> // Include the Adafruit SSD1306 library
#include <WiFi.h> // Include WiFi library
#include <WebServer.h> // Include WebServer library
#include <DHT.h> // Include DHT sensor library

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);
void updateOutputs();
void handleRoot(); // Function to handle root URL
void readSensors(); // Function to read temperature and humidity

/***** DEFINITION OF DIGITAL INPUT PINS *****/
const uint8_t Sensor1_DHT11_DOUT_PIN_D4     = 4;
const uint8_t Sensor2_DHT11_DOUT_PIN_D13        = 13;

/***** DEFINITION OF DIGITAL OUTPUT PINS *****/
const uint8_t Relay1_RelayModule_Signal_PIN_D16     = 16;
const uint8_t Relay2_RelayModule_Signal_PIN_D17     = 17;

/***** DEFINITION OF I2C PINS *****/
const uint8_t Display1_SSD1306OledDisplay_I2C_PIN_SDA_D21       = 21;
const uint8_t Display1_SSD1306OledDisplay_I2C_PIN_SCL_D22       = 22;
const uint8_t Display1_SSD1306OledDisplay_I2C_SLAVE_ADDRESS     = 60;

/***** DEFINITION OF OUTPUT RAW VARIABLES *****/
bool Relay1_RelayModule_Signal_PIN_D16_rawData      = 0;
bool Relay2_RelayModule_Signal_PIN_D17_rawData      = 0;

/***** DEFINITION OF OUTPUT PHYSICAL VARIABLES *****/
float Relay1_RelayModule_Signal_PIN_D16_phyData     = 0.0;
float Relay2_RelayModule_Signal_PIN_D17_phyData     = 0.0;

// DHT sensor instances
DHT dht1(Sensor1_DHT11_DOUT_PIN_D4, DHT11);
DHT dht2(Sensor2_DHT11_DOUT_PIN_D13, DHT11);

// Create relay instances for Relay1 and Relay2
Relay relay1(Relay1_RelayModule_Signal_PIN_D16, 1); // Relay on pin 16
Relay relay2(Relay2_RelayModule_Signal_PIN_D17, 1); // Relay on pin 17

// Create an instance of the Adafruit SSD1306 display
Adafruit_SSD1306 display(Display1_SSD1306OledDisplay_I2C_SLAVE_ADDRESS, Display1_SSD1306OledDisplay_I2C_PIN_SDA_D21, Display1_SSD1306OledDisplay_I2C_PIN_SCL_D22);

// Create an instance of the U8G2_FOR_ADAFRUIT_GFX class
U8G2_FOR_ADAFRUIT_GFX u8g2_for_adafruit_gfx;

// WiFi credentials
const char* ssid = "your_SSID"; // Replace with your WiFi SSID
const char* password = "your_PASSWORD"; // Replace with your WiFi Password

// Web server instance
WebServer server(80);

// Variables to store sensor readings
float temperature1, humidity1;
float temperature2, humidity2;

void setup(void)
{
    // Initialize serial communication
    Serial.begin(115200);

    // Connect to WiFi
    WiFi.begin(ssid, password);
    while (WiFi.status() != WL_CONNECTED) {
        delay(1000);
        Serial.println("Connecting to WiFi...");
    }
    Serial.println("Connected to WiFi");
    Serial.print("IP Address: ");
    Serial.println(WiFi.localIP());

    // Initialize the display
    display.begin(SSD1306_SWITCHCAPVCC); // Initialize the SSD1306 display
    u8g2_for_adafruit_gfx.begin(display); // Connect u8g2 procedures to Adafruit GFX

    // Initialize relays
    relay1.setRelayMode(relayModeAutomatic); // Set relay1 to automatic mode
    relay2.setRelayMode(relayModeAutomatic); // Set relay2 to automatic mode

    // Initialize DHT sensors
    dht1.begin();
    dht2.begin();

    // Set up web server routes
    server.on("/", handleRoot);
    server.begin();
}

void loop(void)
{
    // Refresh output data
    updateOutputs();
    relay1.loop(); // Call loop function for relay1
    relay2.loop(); // Call loop function for relay2

    // Read sensors
    readSensors();

    // Example of using the display
    display.clearDisplay(); // Clear the display
    u8g2_for_adafruit_gfx.setFont(u8g2_font_helvR14_tf); // Set font
    u8g2_for_adafruit_gfx.setCursor(0, 20); // Set cursor position
    u8g2_for_adafruit_gfx.print("IP: ");
    u8g2_for_adafruit_gfx.print(WiFi.localIP()); // Print IP address
    u8g2_for_adafruit_gfx.setCursor(0, 40); // Set cursor position
    u8g2_for_adafruit_gfx.print("T1: "); u8g2_for_adafruit_gfx.print(temperature1); u8g2_for_adafruit_gfx.print("C");
    u8g2_for_adafruit_gfx.setCursor(0, 60); // Set cursor position
    u8g2_for_adafruit_gfx.print("T2: "); u8g2_for_adafruit_gfx.print(temperature2); u8g2_for_adafruit_gfx.print("C");
    display.display(); // Display the content
    delay(2000); // Wait for 2 seconds

    // Handle client requests
    server.handleClient();
}

void updateOutputs()
{
    // Control relays based on temperature thresholds
    if (temperature1 < 21) {
        Relay1_RelayModule_Signal_PIN_D16_rawData = 1; // Turn on relay 1
    } else if (temperature1 > 23) {
        Relay1_RelayModule_Signal_PIN_D16_rawData = 0; // Turn off relay 1
    }

    if (temperature2 < 21) {
        Relay2_RelayModule_Signal_PIN_D17_rawData = 1; // Turn on relay 2
    } else if (temperature2 > 23) {
        Relay2_RelayModule_Signal_PIN_D17_rawData = 0; // Turn off relay 2
    }

    digitalWrite(Relay1_RelayModule_Signal_PIN_D16, Relay1_RelayModule_Signal_PIN_D16_rawData);
    digitalWrite(Relay2_RelayModule_Signal_PIN_D17, Relay2_RelayModule_Signal_PIN_D17_rawData);
}

void readSensors() {
    // Read temperature and humidity from DHT sensors
    humidity1 = dht1.readHumidity();
    temperature1 = dht1.readTemperature();
    humidity2 = dht2.readHumidity();
    temperature2 = dht2.readTemperature();
}

void handleRoot() {
    // Handle root URL and send HTML response
    server.send(200, "text/html", "<h1>Temperature and Humidity</h1><p>Zone 1: T: " + String(temperature1) + "C, H: " + String(humidity1) + "%</p><p>Zone 2: T: " + String(temperature2) + "C, H: " + String(humidity2) + "%</p>");
}

/* END CODE */