PN532 NFC Shield + NDEF Messages

[shailentj]

Can the PN532 NFC Shield for Arduino (http://www.adafruit.com/products/789) read NDEF messages?

I used my Nexus S to record a plain text message on a Mifare Classic 1K tag. If I use my Nexus S to read the tag again, I see the recorded message.

Now, if I mount the PN532 NFC Shield on my Arduino board, and use the libnfc library, is it possible to read the recorded message fromthe tag?

This seems to be the utmost basic functionality of this NFC ecosystem. Is it possible? Google could not provide any information about that. I also could not find any occurrence of the keyword NDEF in the libnfc library documentation.

[adafruit]

we have some basic code and NDEF examples but no direct tutorial for this - check out the library and code linked from the breakout board

[shailentj]

we have some basic code and NDEF examples but no direct tutorial for this - check out the library and code linked from the breakout board

The library page (https://github.com/adafruit/PN532), which can be accessed from the breakout board's page (http://www.adafruit.com/products/364) seems to be down.

Could you please kindly have a look into the matter?

[adafruit]

https://github.com/adafruit/Adafruit-PN532

[shailentj]

The code provided by Adafruit did not contain anything to extract NDEF messages from NFC tags.

Therefore, I decided to write my own library to do this. I have recently started. Please feel free to have a look at it, and improve it where necessary.

https://github.com/shailensobhee/NDEF-lib

[scott-42]

Nothing in that code repo right now. Did you forget to push?

[ktownsend]

The I2C version of the library includes a basic NDEF example to format a Mifare Classic 1K card with a URL that can be read on a phone, for example:
https://github.com/adafruit/Adafruit_NFCShield_I2C

Look in the examples folder.

It gets a bitty messy, but the basics of NDEF are also covered in the Adafruit PN532 wiki: http://www.ladyada.net/products/rfidnfc/ndef.html