Error Problems

battler01 · April 3, 2021, 10:56am

Hello
I am asking for some help as this my first attempt with arduino and don't seem to come to an answer with this one that will not compile. I am using a arduino uno compatible. Attached is a copy of my sketch and also the error info.

Thanks a lot Peter

ERROR CODES.txt (2.44 KB)

SKETCH.txt (1.74 KB)

6v6gt · April 3, 2021, 11:23am

At a quick guess, the DS3231 library you have installed does not match the one the sketch is expecting.

DS3231 rtc(SDA, SCL);

Do you know which DS3231 library you have loaded ?

UKHeliBob · April 3, 2021, 11:31am

Apart from anything else you have this line of code

DS3231  rtc(SDA, SCL);

but neither SDA or SCL are declared in the code but the main problem will be the incompatibility of the library with the code

Where did you get the library and the code ?

anon73444976 · April 3, 2021, 11:45am

SDA and SCL are pre-defines on some platforms.

It would be more normal/sensible to use a Wire reference (actual or implicit) in an I²C device, not raw pin numbers like here - is this a very old library / example?

6v6gt · April 3, 2021, 11:48am

He is using a Uno so a missing declaration of SDA or SCL is not an issue:

github.com

arduino/ArduinoCore-avr/blob/master/variants/standard/pins_arduino.h

/*
  pins_arduino.h - Pin definition functions for Arduino
  Part of Arduino - http://www.arduino.cc/

  Copyright (c) 2007 David A. Mellis

  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.

  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General
  Public License along with this library; if not, write to the
  Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  Boston, MA  02111-1307  USA

This file has been truncated. show original

However, there is a vast proliferation of incompatible DS3231 "libraries" which cause endless grief for less experienced users.

Edit
@AWOL types quicker than I can

battler01 · April 10, 2021, 9:41am

Hi Everybody

Thanks very to you all for your input, this code was 2018 and I have tried DS3231, DS323x and Sadaq_Ds3231 but will now try changing to pin and wire instead as suggested. Again a big thanks for your time to reply.

Peter

system · August 8, 2021, 9:41am

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