0

I am relatively new to Arduino and I am trying to code some neo pixels and every time I try to verify my code this error comes up:

Arduino: 1.8.12 (Mac OS X), Board: "Arduino Uno"

loading libs from /Users/erinshankland/Documents/Arduino/libraries: reading dir >/Users/erinshankland/Documents/Arduino/libraries: open >/Users/erinshankland/Documents/Arduino/libraries: operation not permitted

Error compiling for board Arduino Uno.

This report would have more information with "Show verbose output during compilation" option enabled in File -> Preferences.

this is my code:

#include <Adafruit_NeoPixel.h>

#define PIN        6

 

#define NUMPIXELS 15

Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_GRBW + NEO_KHZ800);

 

// this constant won't change:

const int  btnRed = 2;  // the pin that the pushbutton is attached to

const int  btnBlue = 3;  // the pin that the pushbutton is attached to

const int  btnGreen = 4;  // the pin that the pushbutton is attached to

const int  btnPurple = 5;  // the pin that the pushbutton is attached to

 

 

void setup() {

  randomSeed(analogRead(A0));

  // put your setup code here, to run once:

  pinMode(btnRed, INPUT);

  pinMode(btnBlue, INPUT);

  pinMode(btnGreen, INPUT);

  pinMode(btnPurple, INPUT);

 

  // initialize the LED as an output:

  // initialize serial communication:

  Serial.begin(9600);

  pixels.begin(); // INITIALIZE NeoPixel strip object (REQUIRED)

    pixels.clear(); // Set all pixel colors to 'off'

    pixels.show();

    delay(1000);

 

}

 

void loop() {

if (digitalRead(btnRed)==HIGH){

    rndRed();

  delay(100);

}

 

if (digitalRead(btnBlue)==HIGH){

    rndBlue();

  delay(100);

}

if (digitalRead(btnGreen)==HIGH){

    rndGreen();

  delay(100);

}

 

if (digitalRead(btnPurple)==HIGH){

    rndPurple();

  delay(100);

}

}

 

 

void rndRed() {

  int led = random(0, 15);

  pixels.setPixelColor(led, pixels.Color(255, 0, 0,0));

  pixels.show();   // Send the updated pixel colors to the hardware.

  delay(500);

}

 

void rndBlue() {

  int led = random(0, 9);

  pixels.setPixelColor(led, pixels.Color(0, 0, 255,0));

  pixels.show();   // Send the updated pixel colors to the hardware.

  delay(500);

 

}

 

void rndGreen() {

  int led = random(0, 9);

  pixels.setPixelColor(led, pixels.Color(0, 255, 0,0));

  pixels.show();   // Send the updated pixel colors to the hardware.

  delay(500);

 

}

 

void rndPurple() {

  int led = random(0, 9);

  pixels.setPixelColor(led, pixels.Color(171, 0, 255, 0));

  pixels.show();   // Send the updated pixel colors to the hardware.

  delay(500);

}

I am using a new library for the neo pixels but this has been downloaded and updated. Hopefully someone can help me!

1 Answer 1

1

loading libs from /Users/erinshankland/Documents/Arduino/libraries: reading dir /Users/erinshankland/Documents/Arduino/libraries: open /Users/erinshankland/Documents/Arduino/libraries: operation not permitted

This is not an Arduino problem but an OS problem.

Either your /Users/erinshankland/Documents/Arduino/libraries is not accessible by your user (check the permissions) or it's not a directory.

You can try, from a terminal:

sudo chown -R erinshankland /Users/erinshankland/Documents/Arduino/libraries
chmod -R 755 /Users/erinshankland/Documents/Arduino/libraries

which will reset ownership and file permissions on the directory and everything underneath it.

If not, then delete your libraries folder (which may in fact be a file, not a folder) and recreate it and repopulate it with your desired libraries.

1
  • Thank you this worked! looked like it was a problem with my libraries! Apr 14, 2020 at 11:03

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.