Arduino pro mini_DS18b20_LCDI2S_SDcard

 [SD]              --    [Arduino]
CS or SDCS  --    D10 or D4
MOSI             --    D11
MISO             --    D12
CLK or SCK   --    D13

#include "OneWire.h"
#include "DallasTemperature.h"
#include "Wire.h"
#include "LiquidCrystal_I2C.h"
#include "SD.h"

int row =0;
LiquidCrystal_I2C lcd(0x27, 16,2);

// Arduino數位腳位9接到1-Wire裝置
#define ONE_WIRE_BUS 9
// 運用程式庫建立物件
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);

unsigned long time;

void setup(void)
{

  Serial.begin(9600);
 
  pinMode(10, OUTPUT);

  if (!SD.begin(10)) {
    Serial.println("initialization failed!");
    return;
  }
  Serial.println("initialization done.");
   
  sensors.begin();
  //lcd.begin(16,2);
  lcd.init();  
  lcd.backlight();

// initial

  Serial.println("CLEARDATA");
  Serial.println("LABEL,Time,Timer,Temperature1,Temperature2,");

}

void loop(void)
{
  // 要求匯流排上的所有感測器進行溫度轉換
  sensors.requestTemperatures();

  // 參數0代表匯流排上第0個1-Wire裝置
 
  //Serial.print("DATA,TIME");
  Serial.print("DATA,TIME");
  Serial.print(",");
  Serial.print("TIMER");
  Serial.print(",");
  Serial.print(sensors.getTempCByIndex(0));
  Serial.print(",");
  Serial.print(sensors.getTempCByIndex(1));
  Serial.println(",");

  row ++;

  //超過10000行資料後就覆蓋舊資料
  /*
  if (row > 10000)
  {
    row=0;
    Serial.println("ROW,SET,2");
  }
  */

  lcd.setCursor(0, 0);
  lcd.print("SensorA:");
  lcd.print(sensors.getTempCByIndex(0));
  lcd.print("C");
  lcd.setCursor(0, 1);
  lcd.print("SensorB:");
  lcd.print(sensors.getTempCByIndex(1));
  lcd.print("C");
 
  File dataFile = SD.open("Data.TXT",FILE_WRITE);
  if (dataFile){
    time = millis();
    dataFile.print(time);
    dataFile.print(",");
    dataFile.print(sensors.getTempCByIndex(0));
    dataFile.print(",");
    dataFile.println(sensors.getTempCByIndex(1));

  }
  dataFile.close(); 
   
  delay(100);
}


//http://playground.arduino.cc/Learning/OneWire
//https://github.com/milesburton/Arduino-Temperature-Control-Library
//http://arduino-info.wikispaces.com/file/view/LiquidCrystal_I2C1602V1.zip