I can't get the DS3231 library to work...

Using Arduino Programming Questions
1

I tried out this code (from this website):

#include <DS3231.h>
DS3231  rtc(SDA, SCL);

void setup(){  
  rtc.begin();
  rtc.setDOW(WEDNESDAY);     
  rtc.setTime(12, 0, 0);     
  rtc.setDate(1, 1, 2014);

  Serial.begin(9600);
  rtc.begin();  
  pinMode(lm35_pin, INPUT);
  pinMode(chip_select_pin, OUTPUT);
  if (SD.begin()){
    Serial.println("Initialization Successful. Ready to use");
  } 
  else{
    Serial.println("Initialization failed. Check your pin connections or change your SD card");
    return;
  }  
}

#include <SD.h>
#include <SPI.h>
#include <DS3231.h>

File data_file;
DS3231  rtc(SDA, SCL);

const int lm35_pin = A0; 
int temperature;  
int chip_select_pin = 10;

void loop() {
  temperature = analogRead(lm35_pin);
  temperature = (temperature*500)/1023;
  data_file = SD.open("test.txt", FILE_WRITE);
  if (data_file) {    
    Serial.print(rtc.getTimeStr());
    data_file.print(rtc.getTimeStr());
    Serial.print(",");
    data_file.print(",");    
    Serial.println(temperature);
    data_file.println(temperature);
    data_file.close();
  }
  else {
    Serial.println("error opening your SD card file. Try again");
  }
  delay(3000);
}

and got these error messages:

Arduino: 1.8.5 (Windows 7), Board: "Arduino/Genuino Uno"

WARNING: Category 'Real-time clock' in library DS3231 is not valid. Setting to 'Uncategorized'
sketch_dec19a:2: error: no matching function for call to 'DS3231::DS3231(const uint8_t&, const uint8_t&)'

 DS3231  rtc(SDA, SCL);
                     ^

C:\Users\cnagel\AppData\Local\Temp\arduino_modified_sketch_121604\sketch_dec19a.ino:2:21: note: candidates are:

In file included from C:\Users\cnagel\AppData\Local\Temp\arduino_modified_sketch_121604\sketch_dec19a.ino:1:0:

C:\Users\cnagel\Documents\Arduino\libraries\DS3231/DS3231.h:64:3: note: DS3231::DS3231()

   DS3231();

   ^

C:\Users\cnagel\Documents\Arduino\libraries\DS3231/DS3231.h:64:3: note:   candidate expects 0 arguments, 2 provided

C:\Users\cnagel\Documents\Arduino\libraries\DS3231/DS3231.h:60:7: note: constexpr DS3231::DS3231(const DS3231&)

 class DS3231 {

       ^

C:\Users\cnagel\Documents\Arduino\libraries\DS3231/DS3231.h:60:7: note:   candidate expects 1 argument, 2 provided

C:\Users\cnagel\Documents\Arduino\libraries\DS3231/DS3231.h:60:7: note: constexpr DS3231::DS3231(DS3231&&)

C:\Users\cnagel\Documents\Arduino\libraries\DS3231/DS3231.h:60:7: note:   candidate expects 1 argument, 2 provided

C:\Users\cnagel\AppData\Local\Temp\arduino_modified_sketch_121604\sketch_dec19a.ino: In function 'void setup()':

sketch_dec19a:5: error: 'class DS3231' has no member named 'begin'

   rtc.begin();

       ^

sketch_dec19a:6: error: 'class DS3231' has no member named 'setDOW'

   rtc.setDOW(WEDNESDAY);     

       ^

sketch_dec19a:6: error: 'WEDNESDAY' was not declared in this scope

   rtc.setDOW(WEDNESDAY);     

              ^

sketch_dec19a:7: error: 'class DS3231' has no member named 'setTime'

   rtc.setTime(12, 0, 0);     

       ^

sketch_dec19a:8: error: no matching function for call to 'DS3231::setDate(int, int, int)'

   rtc.setDate(1, 1, 2014);

                         ^

C:\Users\cnagel\AppData\Local\Temp\arduino_modified_sketch_121604\sketch_dec19a.ino:8:25: note: candidate is:

In file included from C:\Users\cnagel\AppData\Local\Temp\arduino_modified_sketch_121604\sketch_dec19a.ino:1:0:

C:\Users\cnagel\Documents\Arduino\libraries\DS3231/DS3231.h:94:8: note: void DS3231::setDate(byte)

   void setDate(byte Date); 

        ^

C:\Users\cnagel\Documents\Arduino\libraries\DS3231/DS3231.h:94:8: note:   candidate expects 1 argument, 3 provided

sketch_dec19a:11: error: 'class DS3231' has no member named 'begin'

   rtc.begin();  

       ^

sketch_dec19a:12: error: 'lm35_pin' was not declared in this scope

   pinMode(lm35_pin, INPUT);

           ^

sketch_dec19a:13: error: 'chip_select_pin' was not declared in this scope

   pinMode(chip_select_pin, OUTPUT);

           ^

sketch_dec19a:14: error: 'SD' was not declared in this scope

   if (SD.begin()){

       ^

C:\Users\cnagel\AppData\Local\Temp\arduino_modified_sketch_121604\sketch_dec19a.ino: At global scope:

sketch_dec19a:28: error: redefinition of 'DS3231 rtc'

 DS3231  rtc(SDA, SCL);

             ^

C:\Users\cnagel\AppData\Local\Temp\arduino_modified_sketch_121604\sketch_dec19a.ino:2:9: note: 'DS3231 rtc' previously declared here

 DS3231  rtc(SDA, SCL);

         ^

C:\Users\cnagel\AppData\Local\Temp\arduino_modified_sketch_121604\sketch_dec19a.ino: In function 'void loop()':

sketch_dec19a:39: error: 'class DS3231' has no member named 'getTimeStr'

     Serial.print(rtc.getTimeStr());

                      ^

sketch_dec19a:40: error: 'class DS3231' has no member named 'getTimeStr'

     data_file.print(rtc.getTimeStr());

                         ^
exit status 1
no matching function for call to 'DS3231::DS3231(const uint8_t&, const uint8_t&)'

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

I'm really new to Arduino, but it seems like most of the problems come from the library. Does anyone know how to fix this? Thank you!

Also, I looked on some other forums and found that someone had a similar problem that was fixed by adding the DS3231 file to the library folder. I had the file in the library folder, and am still having problems.

2

Use this library:
Make sure you install the library properly.

3

Please review this discussion:

4

Thank you!

5

Does anyone know how to fix this? Thank you!

You may exercise the tasks of this document on DS3231 RTC, which has not used DS3231 Library; it has used only the Wire.h Library for the High Level TWI Bus Commands. You may also find this link useful!

6

Hi ppl, well im very noob on arduino and codes and im very happy to find a new arduino famaly, im try to use some elaborated code about 16x2 Big Number Clock, but something rong on my libraries i think.... this is the error log...

teste16x2:7: error: no matching function for call to 'DS3231::DS3231()'

DS3231 rtc;

^

C:\Users\Oficina\Documents\Arduino\teste16x2\teste16x2.ino:7:9: note: candidates are:

In file included from C:\Users\Oficina\Documents\Arduino\teste16x2\teste16x2.ino:3:0:

C:\Users\Oficina\Documents\Arduino\libraries\DS3231/DS3231.h:80:3: note: DS3231::DS3231(uint8_t, uint8_t)

DS3231(uint8_t data_pin, uint8_t sclk_pin);

^

C:\Users\Oficina\Documents\Arduino\libraries\DS3231/DS3231.h:80:3: note: candidate expects 2 arguments, 0 provided

C:\Users\Oficina\Documents\Arduino\libraries\DS3231/DS3231.h:77:7: note: constexpr DS3231::DS3231(const DS3231&)

class DS3231

^

C:\Users\Oficina\Documents\Arduino\libraries\DS3231/DS3231.h:77:7: note: candidate expects 1 argument, 0 provided

C:\Users\Oficina\Documents\Arduino\libraries\DS3231/DS3231.h:77:7: note: constexpr DS3231::DS3231(DS3231&&)

C:\Users\Oficina\Documents\Arduino\libraries\DS3231/DS3231.h:77:7: note: candidate expects 1 argument, 0 provided

C:\Users\Oficina\Documents\Arduino\teste16x2\teste16x2.ino: In function 'void show_clock()':

teste16x2:213: error: 'DateTime' was not declared in this scope

DateTime now = RTC.now(); //get the current date-time

^

teste16x2:215: error: 'now' was not declared in this scope

if (sec != now.second()){

^

C:\Users\Oficina\Documents\Arduino\teste16x2\teste16x2.ino: In function 'void show_date()':

teste16x2:241: error: 'DateTime' was not declared in this scope

DateTime now = RTC.now(); //get the current date-time

^

teste16x2:243: error: 'now' was not declared in this scope

if (date != now.second()){

^

C:\Users\Oficina\Documents\Arduino\teste16x2\teste16x2.ino: In function 'void setup()':

teste16x2:282: error: 'RTC' was not declared in this scope

RTC.begin();

^

Foram encontradas múltiplas bibliotecas para «LiquidCrystal.h»
Utilizado: C:\Users\Oficina\Desktop\arduino-1.8.0\libraries\LiquidCrystal
Não utilizado: C:\Users\Oficina\Documents\Arduino\libraries\NewliquidCrystal
exit status 1
no matching function for call to 'DS3231::DS3231()'

can someone help me please??

7

can someone help me please??

The class does not have a no argument constructor. So, you MUST supply some values, in parentheses, after the instance name.

DS3231  rtc(onePin, anotherPin);

I haven't a clue what pins you wish to use or why there isn't a no argument constructor that uses the hardware I2C pins.