**Thermostat Control** rev_01

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    - Project: **Thermostat Control**
    - Source Code NOT compiled for: ESP32 DevKit V1
    - Source Code created on: 2025-01-21 14:30:51

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
    /* a thermostat with hysteresis operation logic using */
    /* Freertos. */
/****** END SYSTEM REQUIREMENTS *****/

/* START CODE */

/****** DEFINITION OF LIBRARIES *****/
#include <Arduino.h>
#include <FreeRTOS.h>

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);
void thermostatTask(void *pvParameters);

/****** GLOBAL VARIABLES *****/
const int temperatureSensorPin = A0; // Pin for temperature sensor
const int heaterPin = 2;              // Pin for heater control
const float setPoint = 25.0;          // Desired temperature
const float hysteresis = 1.0;         // Hysteresis value

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

    // Set heater pin as output
    pinMode(heaterPin, OUTPUT);

    // Create the thermostat task
    xTaskCreate(
        thermostatTask,       // Task function
        "Thermostat Task",    // Name of task
        2048,                 // Stack size in words
        NULL,                 // Task input parameter
        1,                    // Priority of the task
        NULL                  // Task handle
    );
}

/****** LOOP FUNCTION *****/
void loop(void)
{
    // Empty loop as FreeRTOS handles tasks
}

/****** THERMOSTAT TASK FUNCTION *****/
void thermostatTask(void *pvParameters)
{
    float currentTemperature;

    while (true)
    {
        // Read the current temperature from the sensor
        currentTemperature = analogRead(temperatureSensorPin) * (5.0 / 1023.0) * 100.0; // Convert to Celsius

        // Control the heater based on hysteresis logic
        if (currentTemperature < (setPoint - hysteresis))
        {
            digitalWrite(heaterPin, HIGH); // Turn on heater
            Serial.println("Heater ON");
        }
        else if (currentTemperature > (setPoint + hysteresis))
        {
            digitalWrite(heaterPin, LOW); // Turn off heater
            Serial.println("Heater OFF");
        }

        // Delay for a while before the next reading
        vTaskDelay(pdMS_TO_TICKS(1000)); // Delay for 1 second
    }
}

/* END CODE */