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PN532, I2C communication, no answer if a tag is not detected

Question asked by Francisco Martins on Jan 30, 2018
Latest reply on Feb 2, 2018 by IvanRuiz

Hello,

 

I am using I2C without handshake to communicate with PN532. When I perform a request to detect a tag and the PN532 does not detect one, I can no longer perform requests because I am receiving always 0x00.

 

How can I receive an answer from PN532 when a card is not detected?

 

Best Regards,

Francisco Martins

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