#define STARTCONVO       0x44    // Tells device to take a temperature reading and put it on the scratchpad
#define COPYSCRATCH      0x48    // Copy EEPROM
#define READSCRATCH      0xBE    // Read EEPROM
#define WRITESCRATCH     0x4E    // Write to EEPROM
#define RECALLSCRATCH    0xB8    // Reload from last known
#define SKIPROM          0xCC

// Device resolution
#define TEMP_9_BIT  0x1F //  9 bit
#define TEMP_10_BIT 0x3F // 10 bit
#define TEMP_11_BIT 0x5F // 11 bit
#define TEMP_12_BIT 0x7F // 12 bit

//#include "digitalWriteFast.h"
#include <OneWire.h>
#define DS_PIN 10


OneWire  ds(DS_PIN);

void initDS(){
  ds.reset();
  ds.write(WRITESCRATCH);
  ds.write(0);
  ds.write(100);
  ds.write(TEMP_9_BIT);
  delay(200);
}

byte getTemp(){

  ds.reset();
  ds.write(SKIPROM,1);
  ds.write(STARTCONVO,1);
  delay(100);
  ds.reset();
  ds.write(SKIPROM,1);
  ds.write(READSCRATCH,1);
  return (ds.read() | (ds.read() << 8))  >>4;

}


void setup() {
  Serial.begin(9600);
  Serial.println("Start");
  initDS();
}

void loop() {

  float t = getTemp();
  Serial.println(t);
  delay(1000);

}