[Arduino]温度センサー

#include < OneWire.h >
int inPin=10;
OneWire ds(inPin);

void setup() {
  Serial.begin(9600);
}

void loop() {
  int HighByte, LowByte, TReading, SignBit, Tc_100, Whole, Fract;
  byte i;
  byte present = 0;
  byte data[12];
  byte addr[8];

  if(!ds.search(addr)){
    ds.reset_search();
    return;
  }

  ds.reset();
  ds.select(addr);
  ds.write(0x44,1);

  delay(1000);

  present = ds.reset();
  ds.select(addr);
  ds.write(0xBE);

  for(i=0; i<9; i++){
    data[i] = ds.read();
  }
  Serial.print("Temprerature:");
  LowByte = data[0];
  HighByte = data[1];
  TReading = (HighByte << 8) + LowByte;
  SignBit = TReading & 0x8000;
  if(SignBit){
    TReading = (TReading ^ 0xffff) + 1;
  }
  Tc_100 = (6 * TReading) + TReading / 4;
  Whole = Tc_100 / 100;
  Fract = Tc_100 % 100;
  if(SignBit){
    Serial.print("-");
  }
  Serial.print(Whole);
  Serial.print(".");
  if(Fract < 10){
    Serial.print("0");
  }
  Serial.print(Fract);
  Serial.print(" C\n");

}

頭で分かっていても、実際に手を動かしてみることが大事