[Data-logger] 예제 소스 코드

Example source code for data logger

 

#include <SD.h>

#include <Wire.h>

#include "RTClib.h"

 

#define cSDSelectionPin 10;

 

RTC_DS1307 RTC;

File hLogFile;

void setup(){

Serial.begin(9600);

 

Wire.begin();

if(!hRTC.begin()){

Serial.println("RTC is failes");

return;

}

 

pinMode(cSDSelectionPin, OUTPUT);

if(!SD.begin(cSDSelectionPin)({

Serial.println("Card failed or NOT present");

return;

}

 

char tFileName[] = "USLOG00.txt";

for(int i=0; i<100; i++){

tFileName[5] = i/10 + '0';

tFileName[6] = i%10 + '0':

if(!SD.exists(tFileName)){

hLogFile = SD.open(tFileName, FILE_WRITE);

break;

}

}

if(!hLogFile){

Serial.print("Could not create a file : ");

Serial.println(tFileName);

}

}

 

void loop(){

String theTime = h_GetTime();

h_SaveTime(theTime);

}

 

String h_GetTime(){

DateTime tNow;

tNow = hRTC.Now();

String Rst = "";

Rst = Rst + tNow.day();

 

return Rst;

}

 

void h_SaveTime(String theTime){

hLogFile.println(theTime);

}