DS3231 w/ sd card module. Filename not working.

Using Arduino Project Guidance
1

I am trying to create a file using the date that I read from my ds3231, although it is not working. I want it to do it thorugh the ds 3231 because i need to record data daily on the sd card.
PLEASE HELPPP

Here is my code:

#include <DS3232RTC.h> // GitHub - JChristensen/DS3232RTC: Arduino Library for Maxim Integrated DS3232 and DS3231 Real-Time Clocks
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 20, 4); //sometimes the adress is not 0x27. Change to 0x3f if it dosn't work.
#include <SD.h>
#include <SPI.h>
File myFile;
int pinCS = 10;

char filename[] = "00000000.CSV";

String todayDay, todayMonth, todayYear;
String todayHour, todayMinute, todaySeconds;

void setup()
{
Serial.begin(9600);
setSyncProvider(RTC.get); // the function to get the time from the RTC
if (timeStatus() != timeSet)
Serial.println("Unable to sync with the RTC");
else
Serial.println("RTC has set the system time");

lcd.init(); //Start the LC communication
lcd.backlight();

pinMode(pinCS, OUTPUT);
if (SD.begin())
{
Serial.println("SD card is ready.");
}
else {
Serial.println("FAIL!!!!");
return;
}

}

void loop()
{
todayDay = day();
todayMonth = month();
todayYear = year();
todayHour = hour();
todayMinute = minute();
todaySeconds = second();

String date = String(todayMonth + "-" + todayDay + "-" + todayYear);
String dateFile = String(""" + todayMonth + "-" + todayDay + "-" + todayYear + ".csv" + """);
Serial.println(dateFile);
String todayTime = String(todayHour + "-" + todayMinute + "-" + todaySeconds);
dateFile.trim();

myFile = SD.open(dateFile,FILE_WRITE);
if (myFile)
{
myFile.println(todayTime);
myFile.close();
}
else
{
Serial.println("Error opening the File");
}
lcd.clear();
lcd.setCursor(0, 0);
lcd.print(date);
lcd.setCursor(0, 1);
lcd.print(todayTime);
delay(1000);

}

HERE is my error message!!
RTC has set the system time
SD card is ready.
"2-10-2020.csv"
Error opening the File

2

How many characters are in that file name? Now look at the reference for the SD library. Pay particular attention to where it talks about filenames.

Which Arduino board are you using? Are you aware of the pitfalls of using the String class?

3

String dateFile = String(""" + todayMonth + "-" + todayDay + "-" + todayYear + ".csv" + """);
Serial.println(dateFile);

changed this code to:
String dateFile = String(""" + todayYear+ todayMonth + todayDay + ".csv" + """);

BUt still get same errors.

Thanks for the heads up though!!!!

4

I don't know but, do you need the quotes in the datefile String that you use in

  myFile = SD.open(dateFile,FILE_WRITE);

Have you tried

 String(todayYear+ todayMonth + todayDay + ".csv");