Library cannot be found

Projects Programming
1

I have an issue with this library error which I have been trying to resolve for 1 hour. I downloaded my libraries in these sites: GitHub - Seeed-Studio/PN532: NFC library using PN532 to read/write card and communicate with android and GitHub - don/NDEF: NDEF Library for Arduino. Read and Write NDEF Messages to NFC tags with Arduino.. I download both files and placed it in C:/Program Files(x86)/Arduino/Libraries.

This is the error message:
Arduino: 1.6.6 (Windows 8.1), Board: "Arduino/Genuino Mega or Mega 2560, ATmega2560 (Mega 2560)"

D:\My Folder\School Files\Research\final\final.ino:3:19: fatal error: PN532.h: No such file or directory

#include <PN532.h>
^
compilation terminated.
exit status 1
Error compiling.

Edited: I found another thing in the error message when I tried to manage my libraries.
"Invalid library found in C:\Program Files (x86)\Arduino\libraries\PN532: C:\Program Files (x86)\Arduino\libraries\PN532"

My code is this:

#include <SD.h>
#include <SPI.h>
#include <PN532.h>
#include <PN532_SPI.h>
#include <NfcAdapter.h>

PN532_SPI pn532spi(SPI, 10);
NfcAdapter nfc = NfcAdapter(pn532spi);

File file;
File sdFile;
SdFile root;

void setup() {
  Serial.begin(9600);
  while(!Serial){
  }
  nfc.begin();
  if(!SD.begin(52)){
    Serial.println("SD Card not found...");
    Serial.println("Closing the program.");
    return;
  }
  else{
    Serial.println("SD Card Found...");
    Serial.println("The program is ready, please give an input...");
  }
}

void loop() {
  if(nfc.tagPresent()){
    NfcTag tag = nfc.read();
    tag.print();
    file = tag;
    if(file == tag){
      Serial.println("Transfering file...");
      if(SD.exists(file)){
        Serial.println("The document is already present, please select another document...");
      }
      else{
        sdFile = SD.open(file, FILE_WRITE);
        if(SD.exists(file)){
          Serial.println("File transfer comeplete.");
        }
        Serial.println("All files present: ");
        root.openRoot(512);
        root.ls(LS_R | LS_DATE | LS_SIZE);
        sdFile.close();
      }
    }
  }
  else{
    Serial.println("Waiting for input...");
  }
  delay(100);
}

Please do not mind if there are other errors in this program because I haven't tested it yet (of course!).

Moderator: added code tags

2

Please use code tags </> when posting code.

Have you restarted the IDE after installing the libs?

3

Sorry about the code tags, I am still new to this forum and the arduino world.

For the question, yes... I have restarted the IDE and my PC.

4

Where exactly have you installed the library ?
Exact folder and filenames please.

5

I installed it in my downloads but I copy and pasted it in C:/Program Files (x86)/Arduino/Libraries

6

Sorry admins, I realized that I need to copy the SUBFOLDERS and not the FOLDER itself that's why the IDE doesn't recognize the folder to be a library... Sorry

7

I copy and pasted it in C:/Program Files (x86)/Arduino/Libraries

It should work there if the folder and file names are correct but it really should be in the libraries folder of your sketches folder. That way it will still be available if/when you upgrade the IDE.