"Sensor Data" rev_39

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    - Project: "Sensor Data"
    - Source Code NOT compiled for: Arduino Nano ESP32
    - Source Code created on: 2024-10-07 22:47:52

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
    /* Read temperature from DS18B20 sensor and display */
    /* on LCD screen. */
/****** SYSTEM REQUIREMENT 2 *****/
    /* Perform a countdown of 10 seconds after each */
    /* temperature reading using LiquidCrystal library */
    /* for display control. */
/****** SYSTEM REQUIREMENT 3 *****/
    /* use max pulse oximeter */
/****** END SYSTEM REQUIREMENTS *****/

/* START CODE */

/****** DEFINITION OF LIBRARIES *****/
#include <Wire.h>
#include <DS18B20.h>    // https://github.com/matmunk/DS18B20
#include <LiquidCrystal.h>    // https://github.com/arduino-libraries/LiquidCrystal
#include <DHT.h>    // https://github.com/adafruit/DHT-sensor-library
#include <MAX30100_PulseOximeter.h>    // https://github.com/gabriel-milan/Arduino-MAX30100

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);
void updateOutputs();
void displayTemperature(float temperature);
void countdown(int seconds);

/***** DEFINITION OF DIGITAL INPUT PINS *****/
const uint8_t temperatureSensor_DHT22_DOUT_PIN_D9        = 9;
const uint8_t PulseOximeter_MAX30100_INT_PIN_D2        = 2;
const uint8_t temperatureSensor_DS18B20_DQ_PIN_D4        = 4;

/***** DEFINITION OF DIGITAL OUTPUT PINS *****/
const uint8_t myLCD_LCD1602_RS_PIN_D3        = 3;
const uint8_t myLCD_LCD1602_D4_PIN_D5        = 5;
const uint8_t myLCD_LCD1602_D5_PIN_D6        = 6;
const uint8_t myLCD_LCD1602_D6_PIN_D7        = 7;
const uint8_t myLCD_LCD1602_D7_PIN_D8        = 8;

/***** DEFINITION OF OUTPUT RAW VARIABLES *****/
bool    myLCD_LCD1602_RS_PIN_D3_rawData        = 0;
bool    myLCD_LCD1602_D4_PIN_D5_rawData        = 0;
bool    myLCD_LCD1602_D5_PIN_D6_rawData        = 0;
bool    myLCD_LCD1602_D6_PIN_D7_rawData        = 0;
bool    myLCD_LCD1602_D7_PIN_D8_rawData        = 0;

/***** DEFINITION OF OUTPUT PHYSICAL VARIABLES *****/
float   myLCD_LCD1602_RS_PIN_D3_phyData        = 0.0;
float   myLCD_LCD1602_D4_PIN_D5_phyData        = 0.0;
float   myLCD_LCD1602_D5_PIN_D6_phyData        = 0.0;
float   myLCD_LCD1602_D6_PIN_D7_phyData        = 0.0;
float   myLCD_LCD1602_D7_PIN_D8_phyData        = 0.0;

/****** DEFINITION OF LIBRARIES CLASS INSTANCES*****/
// Create instances for the sensors and display
LiquidCrystal lcd(myLCD_LCD1602_RS_PIN_D3, myLCD_LCD1602_D4_PIN_D5, myLCD_LCD1602_D5_PIN_D6, myLCD_LCD1602_D6_PIN_D7, myLCD_LCD1602_D7_PIN_D8);
DHT dht(temperatureSensor_DHT22_DOUT_PIN_D9, DHT22); // Assuming DHT22 sensor
PulseOximeter pox;

void setup(void)
{
    // put your setup code here, to run once:
    Serial.begin(115200);

    // Initialize LCD
    lcd.begin(16, 2);
    lcd.clear();

    // Initialize DHT sensor
    dht.begin();

    // Initialize Pulse Oximeter
    if (!pox.begin()) {
        Serial.println("Failed to initialize Pulse Oximeter");
        while (1);
    }

    // Set up the Pulse Oximeter
    pox.setOnBeatDetectedCallback([]() {
        Serial.println("Beat detected!");
    });

    // Set pin modes
    pinMode(temperatureSensor_DS18B20_DQ_PIN_D4, INPUT);
}

void loop(void)
{
    // Read temperature from DS18B20 sensor
    float temperature = dht.readTemperature(); // Use DHT for temperature reading

    // Display temperature
    displayTemperature(temperature);

    // Perform a countdown of 10 seconds
    countdown(10);

    // Update Pulse Oximeter readings
    pox.update();

    // Output heart rate and SpO2 values
    Serial.print("Heart rate: ");
    Serial.print(pox.getHeartRate());
    Serial.print(" bpm / SpO2: ");
    Serial.print(pox.getSpO2());
    Serial.println(" %");
}

void displayTemperature(float temperature) {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Temp: ");
    lcd.print(temperature);
    lcd.print(" C");
}

void countdown(int seconds) {
    for (int i = seconds; i > 0; i--) {
        lcd.setCursor(0, 1);
        lcd.print("Countdown: ");
        lcd.print(i);
        delay(1000); // Wait for 1 second
    }
}

/* END CODE */