Arduino Libraries

Theekshana,

as you are and Arduino newbie enthusiast, I suggest to start studying this world (then you will discover a lot of other interesting and fascinating planets, trust me) acquiring first of all a minim of methodology. So, when you have an issue try to document it as well as possible, this is not a question of the level of knowledge. Put the code you are using (don't forget to select the code as C++ syntax highlight) or the piece of code that won't work. Then copy and paste the list of errors you get. In this specific case as this seems depending on something went wrong during the Arduino IDE installation also add a note on what is the operating system you are using, how did you installed the Arduino IDE (note that there was a lot of improvements and changes in the last IDE release so it is good to know also your version) and then also put the folders where you installed it.

In few words, depict your development scenario so we can give you some useful advice.

Enrico

Theekshana,

as you are and Arduino newbie enthusiast, I suggest to start studying this world (then you will discover a lot of other interesting and fascinating planets, trust me) acquiring first of all a minim of methodology. So, when you have an issue try to document it as well as possible, this is not a question of the level of knowledge. Put the code you are using (don't forget to select the code as C++ syntax highlight) or the piece of code that won't work. Then copy and paste the list of errors you get. In this specific case as this seems depending on something went wrong during the Arduino IDE installation also add a note on what is the operating system you are using, how did you installed the Arduino IDE (note that there was a lot of improvements and changes in the last IDE release so it is good to know also your version) and then also put the folders where you installed it.

In few words, depict your development scenario so we can give you some useful advice.

Enrico

I have a similar problem.

I have down loaded the following sketch (radio.ino) and would like to adapt it to another application with similar needs.

https://www.hackster.io/code_files/245011/download

First I wanted to make sure I had all the dependencies loaded, so I ran verify/compile multiple times and added the required files each time. 

#include <Adafruit_NeoPixel.h>

#include "interrupt.h"

#include "Arduino.h"

#include "SoftwareSerial.h"

#include "DFRobotDFPlayerMini.h"

#include <Adafruit_NeoPixel.h>

#include "avr/io.h"

However, I am stuck  at this:

:\Users\klroc\AppData\Local\Temp\arduino_build_597463\sketch\interrupt.h:38:20: fatal error: avr/io.h: No such file or directory

#include <avr/io.h>

I have located io.h on my PC at C:\Program Files (x86)\Arduino\hardware\tools\avr\avr\include\avr\io.h

And have added that path to sketch/add file.  The file io.h now shows as a tab next to radio.ino in the Arduino IDE.

But the problem persists. The file interrupt.h exists in the same directory as io.h and the IDE is able to find it but not io.h.

I am also confused by the use of avr/io.h versus just io.h.  I have tried both versions without success.

I must be missing something simple and hope that someone can help. 

Thanks

Which board are you using?  The AVR libs are only valid for AVR based boards such as a UNO or Mega.  If it is a SAMD based board such as the MKR series, then these are not valid for that line of boards.

https://forum.arduino.cc/index.php?topic=535611.0

However, you may need to go back to Manage Boards in the Arduino IDE and reinstall for the board you are using.  Also, for any libraries you want to use, you may need to install them as well from the IDE.

For any of your own files that you are using, you can just add them to the same folder that your .ino file is or create something like a 'src' folder there and add your own libs there and then reference them in your main code as:

  #include "src/mylibs.h"

Or add them to the Arduino/libraries folder.

The board is Nano so am using Uno.

I had been using Arduino from previous sketches.  Changed it to Nano and now it works

Thanks