"Thermostat Control" rev_04

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    - Project: "Thermostat Control"
    - Source Code NOT compiled for: ESP32 DevKit V1
    - Source Code created on: 2025-01-21 15:20:20

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
    /* a thermostat with an offset on and offset off */
    /* logic. Freertos is used. It works according to a */
    /* multi-step recipe. In each step: Step number, Step */
    /* time, Step Temperature. Maintains the step */
    /* temperature for a set amount of time. */
/****** END SYSTEM REQUIREMENTS *****/

/* START CODE */

/****** DEFINITION OF LIBRARIES *****/
#include <DS18B20.h>  // https://github.com/matmunk/DS18B20
#include <OneWire.h>  // Required for DS18B20

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);
void thermostatTask(void *pvParameters); // FreeRTOS task for thermostat

/***** DEFINITION OF DIGITAL INPUT PINS *****/
const uint8_t Temp_Sensor_DS18B20_DQ_PIN_D4 = 4;

/***** THERMOSTAT PARAMETERS *****/
struct Step {
    uint16_t stepNumber;
    uint32_t stepTime; // in milliseconds
    float stepTemperature; // in Celsius
};

Step steps[] = {
    {1, 30000, 22.0}, // Step 1: 30 seconds at 22°C
    {2, 30000, 25.0}, // Step 2: 30 seconds at 25°C
    {3, 30000, 20.0}  // Step 3: 30 seconds at 20°C
};

const uint8_t totalSteps = sizeof(steps) / sizeof(steps[0]);
uint8_t currentStep = 0;

/****** DEFINITION OF LIBRARIES CLASS INSTANCES*****/
OneWire oneWire(Temp_Sensor_DS18B20_DQ_PIN_D4);
DS18B20 tempSensor(&oneWire);

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

    // Initialize temperature sensor
    if (!tempSensor.begin()) {
        Serial.println("Could not find a valid DS18B20 sensor at the address.");
        while (1);
    }

    // Create FreeRTOS task for thermostat
    xTaskCreate(thermostatTask, "ThermostatTask", 2048, NULL, 1, NULL);
}

void loop(void)
{
    // Main loop can be used for other tasks if needed
    vTaskDelay(1000 / portTICK_PERIOD_MS); // Prevent watchdog timer reset
}

void thermostatTask(void *pvParameters)
{
    while (true) {
        // Check if we have completed all steps
        if (currentStep < totalSteps) {
            // Set the desired temperature
            float desiredTemperature = steps[currentStep].stepTemperature;
            Serial.print("Setting temperature to: ");
            Serial.println(desiredTemperature);

            // Wait for the specified duration
            vTaskDelay(steps[currentStep].stepTime / portTICK_PERIOD_MS);

            // Move to the next step
            currentStep++;
        } else {
            // Reset to the first step if all steps are completed
            currentStep = 0;
        }
    }
}

/* END CODE */