**Sensor Display** rev_01

/********* Pleasedontcode.com **********

    Pleasedontcode thanks you for automatic code generation! Enjoy your code!

    - Terms and Conditions:
    You have a non-exclusive, revocable, worldwide, royalty-free license
    for personal and commercial use. Attribution is optional; modifications
    are allowed, but you're responsible for code maintenance. We're not
    liable for any loss or damage. For full terms,
    please visit pleasedontcode.com/termsandconditions.

    - Project: **Sensor Display**
    - Source Code NOT compiled for: ESP32 DevKit V1
    - Source Code created on: 2025-04-25 13:22:21

********* Pleasedontcode.com **********/

/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
    /* Monitor temperature and humidity using a DHT22 */
    /* sensor, displaying the readings on an SSD1306 OLED */
    /* screen via I2C communication. Ensure accurate data */
    /* retrieval and display updates every few seconds. */
/****** END SYSTEM REQUIREMENTS *****/

/* START CODE */

/****** DEFINITION OF LIBRARIES *****/
#include <Wire.h>
#include <DHT.h>    //https://github.com/adafruit/DHT-sensor-library
#include <Adafruit_SSD1306.h>    //https://github.com/stblassitude/Adafruit_SSD1306_Wemos_OLED.git

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);
void updateOutputs();
void displayData(float temperature, float humidity);

/***** DEFINITION OF DIGITAL INPUT PINS *****/
const uint8_t DHT22_DHT22_DOUT_PIN_D4        = 4;

/***** DEFINITION OF DIGITAL OUTPUT PINS *****/
const uint8_t myLED_LED_PIN_D13        = 13;

/***** DEFINITION OF I2C PINS *****/
const uint8_t SSD1306_SSD1306OledDisplay_I2C_PIN_SDA_D21        = 21;
const uint8_t SSD1306_SSD1306OledDisplay_I2C_PIN_SCL_D22        = 22;
const uint8_t SSD1306_SSD1306OledDisplay_I2C_SLAVE_ADDRESS        = 60;

/***** DEFINITION OF OUTPUT RAW VARIABLES *****/
/***** used to store raw data *****/
bool    myLED_LED_PIN_D13_rawData        = 0;

/***** DEFINITION OF OUTPUT PHYSICAL VARIABLES *****/
/***** used to store data after characteristic curve transformation *****/
float   myLED_LED_PIN_D13_phyData        = 0.0;

/****** DEFINITION OF LIBRARIES CLASS INSTANCES*****/
DHT dht(DHT22_DHT22_DOUT_PIN_D4, DHT22); // Create DHT object
Adafruit_SSD1306 display(SSD1306_LCDWIDTH, SSD1306_LCDHEIGHT, &Wire, -1); // Create display object

void setup(void)
{
    // put your setup code here, to run once:
    pinMode(DHT22_DHT22_DOUT_PIN_D4, INPUT_PULLUP);
    pinMode(myLED_LED_PIN_D13, OUTPUT);

    // Initialize DHT sensor
    dht.begin();

    // Initialize the OLED display
    display.begin(SSD1306_SWITCHCAPVCC, SSD1306_SSD1306OledDisplay_I2C_SLAVE_ADDRESS);
    display.clearDisplay();
}

void loop(void)
{
    // put your main code here, to run repeatedly:
    float temperature = dht.readTemperature(); // Read temperature as Celsius
    float humidity = dht.readHumidity(); // Read humidity

    // Check if any reads failed and exit early (to try again).
    if (isnan(temperature) || isnan(humidity)) {
        displayData(0, 0); // Display error values
        return;
    }

    // Display the data on the OLED
    displayData(temperature, humidity);

    updateOutputs(); // Refresh output data
    delay(2000); // Wait a few seconds between measurements
}

void updateOutputs()
{
    digitalWrite(myLED_LED_PIN_D13, myLED_LED_PIN_D13_rawData);
}

void displayData(float temperature, float humidity)
{
    display.clearDisplay(); // Clear the display

    // Set text size and color
    display.setTextSize(1);
    display.setTextColor(SSD1306_WHITE);

    // Display temperature and humidity
    display.setCursor(0, 0);
    display.print("Temp: ");
    display.print(temperature);
    display.println(" C");
    display.print("Humidity: ");
    display.print(humidity);
    display.println(" %");

    display.display(); // Update the display with the new data
}

/* END CODE */