#include <OneWire.h>
OneWire ds(4);         //D2 GPIO4 DS18B20 IN OUT
void setup() {
 Serial.begin(115200);
 delay(1000);

}

void loop() {
 float celsius;
 byte data[12];
 byte i;
 byte present = 0;
 byte type_s;

 ds.reset();
 ds.write(0xCC, 1);
 ds.write(0x44, 1);

 delay(1000);
 ds.reset();
 ds.write(0xCC, 1);
 ds.write(0xBE, 1);
  for ( i = 0; i < 9; i++) { // we need 9 bytes
    data[i] = ds.read();
  }

  int16_t raw = (data[1] << 8) | data[0];
  if (type_s) {
    raw = raw << 3; // 9 bit resolution default
    if (data[7] == 0x10) {
      // "count remain" gives full 12 bit resolution
      raw = (raw & 0xFFF0) + 12 - data[6];
    }
  } else {
    byte cfg = (data[4] & 0x60);
    // at lower res, the low bits are undefined, so let's zero them
    if (cfg == 0x00) raw = raw & ~7; // 9 bit resolution, 93.75 ms
    else if (cfg == 0x20) raw = raw & ~3; // 10 bit res, 187.5 ms
    else if (cfg == 0x40) raw = raw & ~1; // 11 bit res, 375 ms
    //// default is 12 bit resolution, 750 ms conversion time
  }

  for ( i = 0; i < 9; i++) { // we need 9 bytes
    Serial.print( "0x");
    Serial.print( data[i],HEX);
    Serial.print( " ; ");
  }

  celsius = (float)raw / 16.0;
  Serial.print("Temp= "); Serial.println(celsius);




}