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	- Project: Stress Detection
	- Source Code compiled for: Arduino Uno
	- Source Code created on: 2024-01-18 23:25:28

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
	/* if distance is less than 20cm so read heart rate. */
	/* If heart rate is above 100bpm so print on serial */
	/* "HUMAN STRESSED". */
/****** END SYSTEM REQUIREMENTS *****/

/****** DEFINITION OF LIBRARIES *****/
#include 
#include 

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);
void updateOutputs(void);
unsigned int readHeartRate(void);

/***** DEFINITION OF DIGITAL INPUT PINS *****/
const uint8_t frontSensor_HC_SR04_Echo_PIN_D4 = 4;
const uint8_t sensor_MAX30100_INT_PIN_D5 = 5;

/***** DEFINITION OF DIGITAL OUTPUT PINS *****/
const uint8_t alarm_ActiveBuzzer_output_PIN_D2 = 2;
const uint8_t frontSensor_HC_SR04_Trigger_PIN_D3 = 3;

/****** DEFINITION OF LIBRARIES CLASS INSTANCES *****/
Ultrasonic ultrasonic(frontSensor_HC_SR04_Trigger_PIN_D3, frontSensor_HC_SR04_Echo_PIN_D4);

void setup()
{
  // Initialize digital inputs
  pinMode(sensor_MAX30100_INT_PIN_D5, INPUT_PULLUP);

  // Initialize digital outputs
  pinMode(alarm_ActiveBuzzer_output_PIN_D2, OUTPUT);
  pinMode(frontSensor_HC_SR04_Trigger_PIN_D3, OUTPUT);

  Serial.begin(9600);
}

void loop()
{
  // Read distance using ultrasonic sensor
  unsigned int distance = ultrasonic.read();

  // Read heart rate from sensor
  unsigned int heartRate = readHeartRate();

  // Check if the distance is less than 20cm and heart rate is above 100 bpm
  if (distance < 20 && heartRate > 100)
  {
    Serial.println("HUMAN STRESSED");
  }

  delay(1000);
}

unsigned int readHeartRate()
{
  // Implement code here to read the heart rate from the sensor
}