// -----------------------------------------------------------------
#include <OneWire.h>
#include <DallasTemperature.h>
#include <SPI.h>
#include <SD.h>
// Data wire is plugged into pin 7 on the Arduino
#define ONE_WIRE_BUS 7
// Setup a oneWire instance to communicate with any OneWire devices
// (not just Maxim/Dallas temperature ICs)
OneWire oneWire(ONE_WIRE_BUS);
// Pass our oneWire reference to Dallas Temperature.
DallasTemperature sensors(&oneWire);
float temperature = 0.0;
// -----------------------------------------------------------------
#include <LiquidCrystal.h>
// Connections:
// rs (LCD pin 4) to Arduino pin 12
// rw (LCD pin 5) to Arduino pin 11
// enable (LCD pin 6) to Arduino pin 10
// LCD pin 15 to Arduino pin 13
// LCD pins d4, d5, d6, d7 to Arduino pins 5, 4, 3, 2
LiquidCrystal lcd(12, 11, 10, 5, 4, 3, 2);
int backLight = 13; // pin 13 will control the backlight
// -----------------------------------------------------------------
//SD card
const int sdPin = 9;
File logFile;
// -----------------------------------------------------------------
void setup(void)
{
// start serial port
Serial.begin(9600);
Serial.println("Dallas Temperature IC Control");
// Start up the library
sensors.begin();
pinMode(backLight, OUTPUT);
digitalWrite(backLight, HIGH); // turn backlight on. Replace 'HIGH' with 'LOW' to turn it off.
lcd.begin(16,2); // columns, rows. use 16,2 for a 16x2 LCD, etc.
lcd.clear(); // start with a blank screen
lcd.setCursor(0,0); // set cursor to column 0, row 0 (the first row)
lcd.print("Dallas Temperature IC Control"); // change this text to whatever you like. keep it clean.
lcd.setCursor(0,1); // set cursor to column 0, row 1
lcd.print("DS18B20");
delay(1000);
if(!SD.begin(sdPin)) {
Serial.println("Failed to initialize SD card");
// lcd.setCursor(0,0);
// lcd.println("Init SD failed ");
} else {
Serial.println("SD initialized.");
// lcd.setCursor(0,0);
// lcd.println("Init SD success ");
}
delay(1000);
}
void loop(void)
{
// call sensors.requestTemperatures() to issue a global temperature
// request to all devices on the bus
Serial.print(" Requesting temperatures...");
sensors.requestTemperatures(); // Send the command to get temperatures
Serial.println("DONE");
temperature = sensors.getTempCByIndex(0);
Serial.print("Temperature for Device 1 is: ");
Serial.println(temperature); // Why "byIndex"?
// You can have more than one IC on the same bus.
// 0 refers to the first IC on the wire
lcd.setCursor(0,0);
lcd.print(temperature);
lcd.print("*C ");
lcd.setCursor(0,1);
lcd.print(millis()/1000);
lcd.print(" sec ");
logFile = SD.open("cookLog.txt", FILE_WRITE);
logFile.print(millis());
logFile.print("\t");
logFile.println(temperature);
logFile.close();
}