Mechanical Musical Arm © GPL3+

/* SD card datalogger

 This example shows how to log data from TEMPRATURE AND HUMIDITY SENSOR,
 to an SD card using the SD library.

 The circuit:
 * analog sensors on analog ins 0, 1, and 2
 * SD card attached to SPI bus as follows:
 ** MOSI - pin 11
 ** MISO - pin 12
 ** CLK - pin 13
 ** CS - pin 10 (for MKRZero SD: SDCARD_SS_PIN)

by PIYUSH KUMAR SINGH
 

 */

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

#include "Wire.h"
#define DS3231_I2C_ADDRESS 0x68

// Convert normal decimal numbers to binary coded decimal

int x;

byte decToBcd(byte val)
{
  return( (val/10*16) + (val%10) );
}
// Convert binary coded decimal to normal decimal numbers
byte bcdToDec(byte val)
{
  return( (val/16*10) + (val%16) );
}








const int chipSelect = 10;




void setup() {
   
  Serial.begin(9600);
  Wire.begin(12); 

  Wire.onReceive(receiveEvent);
 
  while (!Serial) {
    ; // wait for serial port to connect. Needed for native USB port only
  }


  Serial.print("Initializing SD card...");
  

  // see if the card is present and can be initialized:
  if (!SD.begin(chipSelect)) {
    Serial.println("Card failed, or not present");
    // don't do anything more:
    return;
  }
  Serial.println("card initialized.");
}


void setDS3231time(byte second, byte minute, byte hour, byte dayOfWeek, byte
dayOfMonth, byte month, byte year)
{
  // sets time and date data to DS3231
  Wire.beginTransmission(DS3231_I2C_ADDRESS);
  Wire.write(0); // set next input to start at the seconds register
  Wire.write(decToBcd(second)); // set seconds
  Wire.write(decToBcd(minute)); // set minutes
  Wire.write(decToBcd(hour)); // set hours
  Wire.write(decToBcd(dayOfWeek)); // set day of week (1=Sunday, 7=Saturday)
  Wire.write(decToBcd(dayOfMonth)); // set date (1 to 31)
  Wire.write(decToBcd(month)); // set month
  Wire.write(decToBcd(year)); // set year (0 to 99)
  Wire.endTransmission();
}






void readDS3231time(byte *second,
byte *minute,
byte *hour,
byte *dayOfWeek,
byte *dayOfMonth,
byte *month,
byte *year)
{
  Wire.beginTransmission(DS3231_I2C_ADDRESS);
  Wire.write(0); // set DS3231 register pointer to 00h
  Wire.endTransmission();
  Wire.requestFrom(DS3231_I2C_ADDRESS, 7);
  // request seven bytes of data from DS3231 starting from register 00h
  *second = bcdToDec(Wire.read() & 0x7f);
  *minute = bcdToDec(Wire.read());
  *hour = bcdToDec(Wire.read() & 0x3f);
  *dayOfWeek = bcdToDec(Wire.read());
  *dayOfMonth = bcdToDec(Wire.read());
  *month = bcdToDec(Wire.read());
  *year = bcdToDec(Wire.read());
}












void writeTime()
{
  byte second, minute, hour, dayOfWeek, dayOfMonth, month, year;
  // retrieve data from DS3231
  readDS3231time(&second, &minute, &hour, &dayOfWeek, &dayOfMonth, &month,
  &year);

  String TIMEString="";
  File TIMEFile = SD.open("IR.txt", FILE_WRITE);
  

TIMEString += "TIME:   ";
TIMEString += String(hour, DEC);
TIMEString += ":";


if (minute<10)
  {
    TIMEString += "0";
    
  }

  TIMEString += String(minute, DEC);
 
 TIMEString += ":";


 if (second<10)
  {
    TIMEString += "0";
  }
  TIMEString += String(second, DEC);


TIMEString += "  ";

TIMEString += String(dayOfMonth, DEC);
TIMEString += "/";
TIMEString += String(month, DEC); 
 TIMEString += "/";
 TIMEString += String(year, DEC); 
  
  TIMEString +=" Day of week: ";




  switch(dayOfWeek){
  case 1:
    TIMEString +="Sunday";
    break;
  case 2:
    TIMEString +="Monday";
    break;
  case 3:
    TIMEString +="Tuesday";
    break;
  case 4:
    TIMEString +="Wednesday";
    break;
  case 5:
    TIMEString +="Thursday";
    break;
  case 6:
    TIMEString +="Friday";
    break;
  case 7:
    TIMEString +="Saturday";
    break;
  }

// if the file is available, write to it:
  if (TIMEFile) {
    TIMEFile.println(TIMEString);
    TIMEFile.close();
    // print to the serial port too:
    Serial.println(TIMEString);
  }
  // if the file isn't open, pop up an error:
  else {
    Serial.println("error opening IR.txt");
  }
}

void receiveEvent(int bytes) {
  x = Wire.read();    // read one character from the I2C
}





void loop() {
 String TIME = "";
 
 switch(x)
 { 
  case 1: { writeTime();
            TIME += "SAA";
            break;
                 }

  case 2: { writeTime();
            TIME += "RE";
            break;
                 }

 case 3: { writeTime();
            TIME += "GAA";
            break;
                 }

 case 4: { writeTime();
            TIME += "MAA";
            break;
                 }                

 case 5: { writeTime();
            TIME += "PAA";
                 }   
 case 6: { writeTime();
            TIME += "DHA";
            break;
                 }  

  case 7: { writeTime();
            TIME += "NI";
            break;
                 } 

default :  { writeTime();
            TIME += "empty";
            break;
                 } 


 }


 File mainFile = SD.open("song.txt", FILE_WRITE);
  

  // if the file is available, write to it:
  if (mainFile) {
    mainFile.println(TIME);
    mainFile.close();
    // print to the serial port too:
    Serial.println(TIME);
  }
  // if the file isn't open, pop up an error:
  else {
    Serial.println("error opening IR.txt");
  }

                 
}