[MAC [SOLVED]] Arduino doesn't read/refrence libraries.

Projects Programming
1

I've been trying to create a timestamp for a project, but i'm lacking a library (DateTime), I've inserted the library in the arduino/libraries directory, its on the sketch/import libraries/contributed/ tab, but still doesn't work into the actual sketch.

2

Hi DolphinDev

Please post your program using code tags (the </> button on the toolbar).

And also copy and paste the error messages you get when you try to compile the program.

Regards

Ray

3

This is my current code:

#include <Wire.h>
/**
(c) I do not own this code, it is public and I wish to edit for educational purposes.
*/


//NOTE I removed the Lib i was trying to use.
(with lib)

#include <DateTime.h>

int tmp102Address = 0x48;
 
void setup(){
 Serial.begin(9600); 
 Wire.begin();

 
}
 
void loop(){
 

  float celsius = getTemperature(); 
 
 Serial.print("Celsius: "); 
 Serial.println(celsius); 

 
 
 
 float fahrenheit = (1.8 * celsius) + 32;  
 Serial.print("Fahrenheit: "); 
 Serial.println(fahrenheit); 

Serial.println("=======");

 
 
 delay(30000);
 
 
 
}
 

float getTemperature(){
 Wire.requestFrom(tmp102Address,2); 
 
 

 byte MSB = Wire.read(); 
 byte LSB = Wire.read(); 
 
 
 int TemperatureSum = ((MSB << 8) | LSB) >> 4;
 
 float celsius = TemperatureSum*0.0625;
 return celsius; 
}

ERROR:
/Users//Documents/Arduino/libraries/DateTime/DateTime.cpp: In member function 'void DateTimeClass::setTime(time_t)':
/Users//Documents/Arduino/libraries/DateTime/DateTime.cpp:28: error: 'millis' was not declared in this scope
/Users/Documents/Arduino/libraries/DateTime/DateTime.cpp: In member function 'time_t DateTimeClass::now()':
/Users/j/Documents/Arduino/libraries/DateTime/DateTime.cpp:43: error: 'millis' was not declared in this scope

NOTE:
I am aware of the error; But do not know how to resolve it

MODEL: Arduino Uno (by the way)

4

Is this the library you are using? Arduino Playground - DateTime

There is a note on that page that says it has been superseded and recommending this instead: Arduino Playground - Time

5

Thank you!