network 温度ロガー - kuroの覚え書き



//              +------------+

//         addr-|>1         6|<-SDA =>Arduino A4                      

//              |    =--=    |                           

//         GND->|2   =  =   5|                           

//              |    =--=    |                           

//         VDD->|3    C1    4|<-SCL =>Arduino A5                          

//              |    -||-    |                           

//              +------------+

//                LM 73 (T731)

#include <DateTime.h>

#include <DateTimeStrings.h>

#include <Wire.h>

#define LM73_ADDR 0x4c    //Pin1 is open 0xb10011000 (7bit address)
int ret;        //for LM73

int data = 0 ;  //for LM73

time_t prevtime;
void setup(){

  prevtime = DateTime.makeTime(0,0,9,17,1,2009);

  DateTime.sync(prevtime);

  Serial.begin(9600);

  delay(500);

  LM73SETUP();

}
void loop(){
  while( prevtime == DateTime.now() ){

    delay(100);

  }

  DateTime.available();

  printdigitalClock();

  senstemp();

  printdata(data);

  delay(599985);

}
void LM73SETUP(){

  Wire.begin();   

  Wire.beginTransmission(LM73_ADDR);

  Wire.send((byte)0x04);    //Control/Status resister 4

  Wire.send(0x60);        // 14 bits resolution mode

  ret=Wire.endTransmission();
  Wire.beginTransmission(LM73_ADDR);

  Wire.send(0x00);        // set resister 0

  ret=Wire.endTransmission();

  delay(100);

}
void senstemp(){

  Wire.beginTransmission(LM73_ADDR);

  ret=Wire.requestFrom(LM73_ADDR, 2);

  

  data = 0;

  if (Wire.available()) {

    data = Wire.receive();

  } else {

    Serial.println("sensor not available");

  }

  if (Wire.available()) {

    data = (data << 8 )| Wire.receive() ;

  }

    

  ret=Wire.endTransmission();

}
void printdata(int data){

  

  int data2;

  int data3;

  float data_f;

  

  boolean negative=false;
  if (data < 0 ) {

    negative=true;

    data = -data; 

  }
  data2 = data >> 7;
  data_f = (float)(data >> 2 ) / 32;

  data_f = data_f - data2 ;
  data3 = data_f * 100 ;
  if (negative) {

    Serial.print("-");

  }

  Serial.print(data2);

  Serial.print(".");

  Serial.print(data3/10);

  Serial.println(data3 % 10);

}

void printdigitalClock(){

  Serial.print(DateTime.Year+1900,DEC);

  Serial.print(".");

  Serial.print(DateTime.Month,DEC);

  Serial.print(".");

  Serial.print(DateTime.Day,DEC);

  Serial.print(" ");

  Serial.print(DateTime.Hour,DEC);

  printDigits(DateTime.Minute);

//  printDigits(DateTime.Second);

  Serial.print(", ");

}
void printDigits(byte digits){

  Serial.print(":");

  if(digits < 10)

    Serial.print('0');

  Serial.print(digits,DEC);

}