const int trigPin = 5;
const int echoPin = 18;

//define sound speed in cm/uS
#define SOUND_SPEED 0.034
#define CM_TO_INCH 0.393701

long duration;
float distanceCm;
float distanceInch;

//Constants 
const unsigned long INTERVAL = 6000000; // Interval of 10 minuetes in milliseconds 

//Variables 
unsigned long startTime; // Start time of the program 
unsigned long lastPrintTime; //Time of the last summary print
unsigned long totalMeasurements; //Total numnber of measurements 
float totalValue; // Accumulated total value of measurements 
float highestValue; // Highest measured value 
float lowestValue; // Lowest measured value 

//Function to read sensor value (example function) 
float readSensorValue() {
  // Replace with your sensor reading logic 
  // This is just a placeholder 
  return random (0,144); 
}

// Function to print the summary 
void printSummary() { 
  unsigned long elapsedTime = millis() - startTime;
  unsigned long totalMinutes = elapsedTime / 60000;

  // Print overall average 
  float overallAverage = totalValue / totalMeasurements;
  Serial.print("Overall Average:");
  Serial.println(overallAverage);

  //Print highest and lowest values 
  Serial.print("Highest Value "); 
  Serial.println(highestValue);
  Serial.print("Lowest Value: ");
  Serial.println(lowestValue);

  //Print 10-minute averages
  Serial.println("10-minute Averages:");
  for (unsigned long i=0; i< totalMinutes; i += 10) {
    float average = totalValue / totalMeasurements;
    Serial.print("Minute "); 
    Serial.print(i);
    Serial.print(" Average: ");
    Serial.println(average);
  }
 }


void setup() {
  Serial.begin(115200); // Starts the serial communication
  
  pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output
  pinMode(echoPin, INPUT); // Sets the echoPin as an Input

  //Initialize variables 
  startTime = millis();
  lastPrintTime = startTime;
  totalMeasurements = 0;
  totalValue = 0;
  highestValue = INFINITY;
  lowestValue = INFINITY;
}


void loop(){
  //Check if it's time to take a measurement 
  unsigned long currentTime = millis();
  if (currentTime - lastPrintTime >= INTERVAL) {
    // Read sensor value 
    float value = readSensorValue();
    
    // Update total value and number of measurements 
    totalValue += value;
    totalMeasurements++; 

    // Update highest and lowest values 
    if (value > highestValue) {
      highestValue = value;
    }
    if (value < lowestValue) {
      lowestValue = value;
    }
    
    // Print summary 
    printSummary();

    //Update last print time 
    lastPrintTime = currentTime;
  
    
  }
  
  
  // Clears the trigPin
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  // Sets the trigPin on HIGH state for 10 micro seconds
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  
  // Reads the echoPin, returns the sound wave travel time in microseconds
  duration = pulseIn(echoPin, HIGH);
  
  // Calculate the distance
  distanceCm = duration * SOUND_SPEED/2;
  
  // Convert to inches
  distanceInch = distanceCm * CM_TO_INCH;
  
  // Prints the distance in the Serial Monitor
  Serial.print("Distance (cm): ");
  Serial.println(distanceCm);
  Serial.print("Distance (inch): ");
  Serial.println(distanceInch);
  
  
  
 delay(1000);
}