#include <OneWire.h>
#include <DallasTemperature.h>
#include <TimerOne.h>
#define ONE_WIRE_BUS 2
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);
#define BUFFER_SIZE 10
volatile float buffer[BUFFER_SIZE];
volatile int head = 0;
volatile int tail = 0;
volatile int count = 0;
volatile bool bufferFullFlag = false;
unsigned long lastPlotTime = 0;
void readSensorISR() {
  if (count >= BUFFER_SIZE) {
    bufferFullFlag = true;
  } else {
    sensors.requestTemperatures(); 
    float tempC = sensors.getTempCByIndex(0);
    buffer[head] = tempC;
    head = (head + 1) % BUFFER_SIZE;
    count++;
  }
}
void setup() {
  Serial.begin(115200);
  sensors.begin();
  Timer1.initialize(200000);
  Timer1.attachInterrupt(readSensorISR);
}
void loop() {
  if (millis() - lastPlotTime >= 1000) {
    lastPlotTime = millis();
    if (bufferFullFlag) {
      Serial.println("BUFFER FULL"); 
      noInterrupts();
      bufferFullFlag = false;
      interrupts();
    }
    while (count > 0) {
      float dataSuhu;
      noInterrupts();
      dataSuhu = buffer[tail];
      tail = (tail + 1) % BUFFER_SIZE; count--;
      interrupts();
      Serial.println(dataSuhu);
    }
  }
}