#define SERIESRESISTOR 10000
#define NOMINAL_RESISTANCE 10000
#define NOMINAL_TEMPERATURE 25
#define BCOEFFICIENT 4300

unsigned int last10mins[600]; //sensor info every 1 sec for 10 min
float avgMin[144]; //avg of each 10 min interval
int tenIndex = 0;
int fullIndex = 0;

unsigned int minimum = 9999999999;
unsigned int maximum = 0;
unsigned long rollingSum = 0; // This assumes that the tempurature will never go below 0 F
float rollingAvg;

unsigned long myTime = 0;
int endSeconds = 86401;//24 hours in seconds, + 1 for wiggle room 
int analogPin = 35;
float val = 0.0;
float resistance = 0.0;
float steinhart = 0.0;

float voltToF(float volt){ // function that converts numbers into degrees celcius
  resistance = (4095 / volt) -1;
  resistance = SERIESRESISTOR * resistance;
  steinhart = resistance / NOMINAL_RESISTANCE;
  steinhart = log(steinhart);
  steinhart /= BCOEFFICIENT;
  steinhart += 1.0 / (NOMINAL_TEMPERATURE + 273.15);
  steinhart = 1.0 / steinhart;
  steinhart -= 273.15;
  steinhart = (steinhart * (9.0/5.0)) + 32.0;
  return steinhart;
}

float avgdata(){
  int sum = 0;
  for(int i = 0; i < 600; i++){
    sum += last10mins[i];
  }
  return ((float)sum)/600.0;
}

/*
float tempToF(float val){
  //convert float of sensor info to celcuis #
}
*/

void printData(){//avgs at each 10 min interval, maximum, minimum, and overall average
  Serial.println("10 min intervals, sensor data"); //Titles
  for(int i = 0; i < fullIndex; i++){
    Serial.print((i+1)*10);
    Serial.print(" mins, avg temp: ");
    Serial.println(voltToF(avgMin[i]));//must be converted
  }
  Serial.print("Average overall: ");
  Serial.println(voltToF(rollingAvg));//must be converted
  Serial.print("Minimum overall: ");
  Serial.println(voltToF(minimum));//must be converted as a float
  Serial.print("Maximum overall: ");
  Serial.println(voltToF(maximum));//must be converted as a float
}

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

void loop() {
  // put your main code here, to run repeatedly:
 
  if(myTime < endSeconds || fullIndex >= 144){
    myTime = (millis()-12)/1000;
    val = analogRead(analogPin);
    //prints the live data with time stamps
    Serial.print("Time running(sec): ");
    Serial.print(myTime);
    Serial.print(", Temp: ");
    Serial.println(voltToF(val));
    if(tenIndex < 600){
      last10mins[tenIndex] = val;
      if(last10mins[tenIndex] < minimum)
        minimum = last10mins[tenIndex];
      if(last10mins[tenIndex] > maximum)
        maximum = last10mins[tenIndex];

      rollingSum += last10mins[tenIndex];
      rollingAvg = (float)rollingSum / (float)(600*fullIndex+tenIndex);
       
      tenIndex++;
    } else {
      tenIndex = 0;
      avgMin[fullIndex] = avgdata();
      fullIndex++;
    }
  }

  char serinput;
  if (Serial.available()){
    serinput = Serial.read();
    if((char)serinput >= 32 && (char)serinput <= 126){
      printData(); // printing what is in the 144 array (stats included overall maximum, minimum, average temp)
    }
  }
  delay(1000);
}