Arduino Libraries

they are included with the arduino ide go to arduino/hardaware/tools/avr/avr/include/avr

and you will find them avr/io.h will be io.h and so on

Hi,

Im new to Arduino,

Im doing a program regarding a card reader,I have added a timer interrupts in order to execute these interrupts within my desired time when the card batch in,so when i include these avr/interrupt.h,it compiles but my Timer Interrupts doesn't read in that program,when i check into arduino/hardaware/tools/avr/avr/include/avr ,i managed to find all the  interrupts,signal,etc etc files but when i double clicks it ,its shows this.Please help me.Thanks!

Hi pravinah

If you are using the Arduino IDE and have installed it correctly, you don't need to explicitly include interrupt.h - i's a core library.

Furthermore, you can't look inside a library file using the IDE - you need to use a text editor.

I suggest you  familiarise yourself with interrupts using some simple sketches - there are plenty of examples around. If you still have problems, post a new question.

Best wishes

Neil

Hi Neil,

I am really new with Arduino and do not understand why included .h files is creating error during compiling. As you said I have checked my directory and found all those files but this is version 1.6.9 and directory structure is NOT same what you are saying. All those .h files are in in the following directory...

let me say I am looking for

avr/io.h

avr/signal.h

avr/interrupt.h

avr/pgmspace.h

and I found these files in this directory...program Files(x86)/Arduino/hardware/tools/avr/avr/include/avr/ <all those .h files are located here>

My questions are;

Is it correct location for thesse files?

Should I change this directory structure and insert all those files as what you say?

I have been using IDE 1.6.8 and installed 1.6.9 today and I got the similar problem with these both versions.

What is the nest way to get compiling errors because it can not fine these files?

Thanks a lot

Orhan Birincioglu

do not understand why included .h files is creating error during compiling

What is the error you get.

If you cut and paste along with the first parts of the code it may assist.

Mark

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