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I am working in an Arduino project in visual studio. I need to get and set time to a RTC clock. That's why I am adding a ds3231 header file in my project from GitHub. When I want to build "it's showing me linking error.

cccSeqVu.ltrans0.o*: (.text.startup+0x1ea): undefined reference to DS3231_init(unsigned char)

My code is given below.

   #include <Wire.h>
   #include "ds3231.h"
  

    void setup(){
        Wire.begin();
        DS3231_init(0x4);
    }
    
    void loop(){
    }

Can anyone please help me to find out what I have missed.

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  • add the whole library, not just the header file Commented Jan 8, 2023 at 15:32
  • How to add the whole library in visual studio? Commented Jan 8, 2023 at 15:38
  • I don't know. I don't use platformio Commented Jan 8, 2023 at 15:46

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