Temp_SD_Ardu.ino

#include <SPI.h>
#include <SD.h>
#include <Time.h>

File Datei;

void setup() {
  Serial.begin(9600);
  
  setTime(13,58,10,01,11,15);
  
  Serial.print(hour());
  Serial.print(":");
  Serial.print(minute());
  Serial.print(":");
  Serial.print(second());
  Serial.print("|");
  Serial.print(day());
  Serial.print(".");
  Serial.print(month());
  Serial.print(".");
  Serial.println(year());
  
  pinMode(10, OUTPUT);

  SD.begin(10);  
  
  Datei = SD.open("temp.txt", FILE_WRITE); 
    
  
}

void loop() {
  long temp = readTemp();
  long zwe = temp / 10000;
  long temperaturinc = zwe - 5;
  int tag_g = day();
  int mon_g = month();
  int jahr_g = year();
  String doppel = " : ";
  String datum = tag_g + doppel + mon_g + doppel + jahr_g;
  int stunde_g = hour();
  int minute_g = minute();
  String zeit = stunde_g + doppel + minute_g;
  String zeile = datum + " | " + zeit + " | " + temperaturinc;
  Datei.println(zeile);
  Datei.flush(); 

  delay(60000);
}

long readTemp() {
  long result;
  // Read temperature sensor against 1.1V reference
  ADMUX = _BV(REFS1) | _BV(REFS0) | _BV(MUX3);
  delay(2); // Wait for Vref to settle
  ADCSRA |= _BV(ADSC); // Convert
  while (bit_is_set(ADCSRA,ADSC));
  result = ADCL;
  result |= ADCH<<8;
  result = (result - 125) * 1075;
  return result;
}