1_Wire_Single

#include <OneWire.h>

OneWire  ds(10);               // on pin 10
//  ----------------------   Setup   --------------------
void setup(void)
{
  Serial.begin(9600);          // Usa monitor serial
}
//  ----------------------   loop   --------------------
void loop(void)
{
  byte i;                      // gp use
  byte present = 0;            // Presence pulse
  byte type_s;                 // Tipo de sensor 18b20  18s20 etc
  byte data[12];               // Matriz para dados do sensor
  byte addr[8];                // Matriz para ROM do sensor
  float celsius;               // Variavel para temperatura

  if ( !ds.search(addr))       // Faça se não tiver addr
  {
    ds.reset_search();         // Reset 1-wire bus
    delay(250);                // delay de 250ms
    return;                    // retorna
  }

  if (OneWire::crc8(addr, 7) != addr[7])    // Se o endereço crc8 for diferente do byte 7
  {
      Serial.println("CRC is not valid!");  // Falha de CRC
      return;                               // Retorna
  }
  // the first ROM byte indicates which chip
  switch (addr[0])                           // 10 18s20
  {
    case 0x10:
      type_s = 1;                            // tipo 1
      break;
    case 0x28:                               // 18s20
      type_s = 0;                            // tipo 0
      break;
//    case 0x22:                               // 1822
//      type_s = 0;                            // tipo 0
//      break;
    default:
      Serial.println("Device is not a DS18x20 family device.");  // Se for diferente dests tipo informa
      return;
  }

  ds.reset();                         // Reset 1-wire bus
  ds.select(addr);                    // Seleciona o device com o endereço
  ds.write(0x44,1);                   // start conversion, with parasite power on at the end

  delay(1000);                        // maybe 750ms is enough, maybe not

  present = ds.reset();               // Qdo houver presence pulse
  ds.select(addr);                    // Seleciona o device com o endereço
  ds.write(0xBE);                     // Read Scratchpad

  for ( i = 0; i < 9; i++) {          // we need 9 bytes
    data[i] = ds.read();

  }
  // convert the data to actual temperature

  unsigned int raw = (data[1] << 8) | data[0];    // raw data1 or  com data0  2 bytes

  if (type_s)                                     // Faça se for tipo1
  {
    raw = raw << 3;                               // 9 bit resolution default

    if (data[7] == 0x10)                          // faça se for 18s20
    {
      // count remain gives full 12 bit resolution
      raw = (raw & 0xFFF0) + 12 - data[6];
       Serial.println(raw);
    }
  }
  else
  {
    byte cfg = (data[4] & 0x60);
    if (cfg == 0x00) raw = raw << 3;          // 9 bit resolution, 93.75 ms
    else if (cfg == 0x20) raw = raw << 2;     // 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
  }
  float tempC = (float)raw / 16.0;

    Serial.print(tempC);
    Serial.print(" C: ");


}