/* Paviat Rai
 * ENGR 103
 * FINAL PROJECT
 * 7 July 2023
 */



// Do not mind all the variables. They have all been acounted for and were taking up too much room vertically so I put a lot of them in one line
int ThermistorPin = 36;int Vo;
float R1 = 10000;float R2;float STH;float T;float F;float A = 1.009249522e-03;float B = 2.378405444e-04;float C = 2.019202697e-07;float High = -1000;float Low = 1000;float TENARRAY[600];float tentempsum = 0;float tenminav = 0;float tempsum = 0;
int millipassed = 0;
float milliten = 0;float totalav = 0;float ARRAYOFTEN[144];
unsigned long startTime;
int extratime = 0;int ind = 0;int x = 0;

float Temperature(){ // Steinhart-Hart equation stuff
  Vo = analogRead(ThermistorPin);
  R2 = R1 * (4096.0 / (float)Vo - 1.0);
  STH = log(R2);
  T = (1.0 / (A + B*STH + C*STH*STH*STH));
  T = T - 273.15;
  T = (T * 9.0)/ 5.0 + 32.0;
  return T;
  }

void REPORT(){ // function for 10 min reports
  if (Serial.available() > 0){ // checks serial port
    String userInput = Serial.readString(); // reads input
    userInput.trim(); // gets rid of extra stuff
    if (userInput.equalsIgnoreCase("report")){
      if(x == 0){
        Serial.println("The program has not been reading temperatures for 10 minutes.");
      }
      else{
      Serial.println("All of the ten minute averages will now be printed.");
      for(int o = 0; o < x; o++){
        Serial.print(ARRAYOFTEN[o]); Serial.println(" F");
        tentempsum = 0;
        tenminav = 0;
      }
      delay(10000);
      Serial.println("The highest, lowest, and total average temperatures since the program started will now be displayed");
      Serial.print("Highest temperature: "); Serial.print(High); Serial.println(" F");
      Serial.print("Lowest temperature: "); Serial.print(Low); Serial.println(" F");
      Serial.print("Total average temperature: "); Serial.print(totalav); Serial.println(" F");
      extratime +=10000;
      }
    extratime +=10000;
    delay(10000);
    }
  }
}

void PRINTING(){ // simply prints every second
  Serial.print("Temperature: "); 
  Serial.print(F);
  Serial.println(" F"); 
}
  
void setup() {
Serial.begin(115200);
startTime = millis(); // time that may interfere with accurate results
}

void loop() {
  delay (1000); // it has to being with a delay to avoid starting at 0 milliseconds
  millipassed = millis() - extratime - startTime; // total time since the loop has started subtracting extra time
  milliten = (millipassed/1000) % 600; // Counts the seconds in each 10 min interval
  F = Temperature(); // calling function
  TENARRAY[ind] = F; // array of temps in 10 mins
  ind = (ind + 1) % 600; // resets index after 10 mins
  if (millipassed >= 600000){ // starts the 10 min averaging 
    if (milliten == 0){
      tentempsum = 0;
      for (int i = 0; i < 600; i++){ // adds all values and finds 10 min av
        tentempsum = TENARRAY[i] + tentempsum;
      }
      tenminav = tentempsum / 600.0;
      ARRAYOFTEN[x] = tenminav;
      x++;
    }
  }
  tempsum += F; // is what it sounds like
  totalav = tempsum / (millipassed/1000); // total avs
  if (F > High){ // highest and lowest temps
    High = F;
  }
  if (F < Low){
    Low = F;
  }
  REPORT();
  PRINTING();
}