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	- Project: Arduino Alarming
	- Source Code compiled for: Arduino Uno
	- Source Code created on: 2024-01-18 22:30:40

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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 *****/


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

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);
void updateOutputs(void);
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 I2C PINS *****/
const uint8_t sensor_MAX30100_I2C_PIN_SDA_A4 = A4;
const uint8_t sensor_MAX30100_I2C_PIN_SCL_A5 = A5;
const uint8_t sensor_MAX30100_I2C_SLAVE_ADDRESS = 87;

/***** DEFINITION OF OUTPUT RAW VARIABLES *****/
/***** used to store raw data *****/
bool alarm_ActiveBuzzer_output_PIN_D2_rawData = 0;
bool frontSensor_HC_SR04_Trigger_PIN_D3_rawData = 0;

/***** DEFINITION OF OUTPUT PHYSICAL VARIABLES *****/
/***** used to store data after characteristic curve transformation *****/
float alarm_ActiveBuzzer_output_PIN_D2_phyData = 0.0;
float frontSensor_HC_SR04_Trigger_PIN_D3_phyData = 0.0;

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

void setup(void)
{
  // put your setup code here, to run once:
  pinMode(frontSensor_HC_SR04_Echo_PIN_D4, INPUT);
  pinMode(sensor_MAX30100_INT_PIN_D5, INPUT_PULLUP);
  pinMode(alarm_ActiveBuzzer_output_PIN_D2, OUTPUT);
  pinMode(frontSensor_HC_SR04_Trigger_PIN_D3, OUTPUT);
  
  Serial.begin(9600);
}

void loop(void)
{
  // put your main code here, to run repeatedly:
  updateOutputs(); // Refresh output data
  
  // Read distance from ultrasonic sensor in centimeters
  unsigned int distance = ultrasonic.read();
  
  // Check if the distance is less than 20cm
  if (distance < 20)
  {
    // Read heart rate from sensor
    int heartRate = readHeartRate();
    
    // Check if heart rate is above 100bpm
    if (heartRate > 100)
    {
      Serial.println("HUMAN STRESSED");
    }
  }
}

void updateOutputs()
{
  digitalWrite(alarm_ActiveBuzzer_output_PIN_D2, alarm_ActiveBuzzer_output_PIN_D2_rawData);
  digitalWrite(frontSensor_HC_SR04_Trigger_PIN_D3, frontSensor_HC_SR04_Trigger_PIN_D3_rawData);
}

int readHeartRate()
{
  // Add your code to read heart rate from sensor
  // Return the heart rate value
  // This is just a placeholder
  return 0;
}