NFC reader on Arruino Uno WiFi Rev2

[tomkopc]

Hello, I have a nfc reader by adafruit. I connected that with arduino just like on the Adafruit website. In arduino idle i have error ‘Error of compilation on Arruino Uni WiFi Rev2’. How can I solve this problem???

[pert]

I moved your topic to an appropriate forum category @tomkopc .

In the future, please take some time to pick the forum category that best suits the subject of your topic. There is an "About the _____ category" topic at the top of each category that explains its purpose.

This is an important part of responsible forum usage, as explained in the "How to get the best out of this forum" guide. The guide contains a lot of other useful information. Please read it.

Thanks in advance for your cooperation.

[ptillisch]

Hi @tomkopc. Please post the full text of the error message. The generic message you shared doesn't give us enough information to be able to help you.

I'll provide instructions you can follow to provide us with the information we need to get started:

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NOTE: These instructions will not solve the problem. They are only intended to gather more information about the problem.

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Please do this:

1. Select Sketch > Verify/Compile from the Arduino IDE menus.
2. Wait for the compilation to fail.
3. You will see a "Compilation error: ..." notification at the bottom right corner of the Arduino IDE window. Click the COPY ERROR MESSAGES button on that notification.
4. Open a forum reply here by clicking the Reply button.
5. Click the <CODE/> icon on the post composer toolbar.
   This will add the forum's code block markup (```) to your reply to make sure the error messages are correctly formatted.
   
6. Press Ctrl+V.
   This will paste the compilation output into the code block.
7. Move the cursor outside of the code tags before you add any additional text to your reply.
8. Click the Reply button to post the output.

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In case the output is longer than the forum software will allow to be added to a post, you can instead save it to a .txt file and then attach that file to a reply here:

1. Open any text editor program.
2. Paste the copied output into the text editor.
3. Save the file in .txt format.
4. Open a forum reply here by clicking the Reply button.
5. Click the "Upload" icon () on the post composer toolbar:
   
   A dialog will open.
6. In the dialog, select the .txt file you saved.
7. Click the Open button.
8. Click the Reply button to publish the post.

Alternatively, instead of using the "Upload" icon on the post composer toolbar as described in steps (5) - (7) above, you can simply drag and drop the .txt file onto the post composer field to attach it.