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float read_temp() {

const int analogInPin = A0;  // Analog input pin that the potentiometer is attached to
//const int analogOutPin = 9; // Analog output pin that the LED is attached to

float sensorValue=0 ;        // value read from the pot
float Tr = 0;        // value output to the PWM (analog out)


  // read the analog in value:
  sensorValue = analogRead(analogInPin);

  // map it to the range of the analog out:
  Tr = mapfloat(sensorValue, 644, 530,  41.3,  27.3);
 # define TEMP_AVG_SIZE 10
    int j=0;
    float sum =0;
    float new_temp = Tr; // TODO: update this line to read new temp!
    temp_avg_arr[temp_avg_ind] = new_temp;
    for(j=0;j<TEMP_AVG_SIZE;j++)
    {
      if(temp_avg_arr[j]==1)
    temp_avg_arr[j]=new_temp;
      }

    if(temp_avg_ind== 9){ // wrap around to start of array
        temp_avg_ind=0;
    }
    else{
        temp_avg_ind++;
    }
    for (j=0;j<TEMP_AVG_SIZE ;j++){
        sum+=temp_avg_arr[j];
    }

    float current_avg=sum/TEMP_AVG_SIZE;

    return (current_avg);
    // TODO: use current_avg for whatever
     //dbSerialPrintln(temp_avg_arr[TEMP_AVG_SIZE ]);
//dbSerialPrintln(sensorValue);
}