ST95HF. Application questions

[niltec]

Posted on November 03, 2016 at 11:22

Gentlemen!

I try to use chip ST95HF. I am a beginner in NFC. I need to develop Peer to Peer connection. What protocol should I use for it?

I can not see of the emitted field at 13,56 MHz.

I initialized of the chip to work for IEC14443B protocol (I checked of the reply � it was 0x0000). I used for test of the IDN command 0x000100 and received of the true reply - ''NFC FS2JAST4''.

Then I try to send of the test sequence:

0x00 0x06 0x64          0x35�.0x35 (0x35 � 100 times).

I did not receive of the true reply (0x0C 0x00 instead of 0x00 0x00) and I did not see any field (I use a good receiver and tested of the SF95HF output by scope).

Could you help to understand of my error?

#st95hf

[Peter Boringer · Accepted solution]

Posted on November 08, 2016 at 17:26

Dear John,

Can you please provide more information:

Which kind of device do you have in front of the ST95HF

What is  initialization sequence do you perform for the ST95HF.

As you are in ISO 14443B

For info till the protocol select sequence is done you have to send the initiate command and  the select depending the initiate answer.

Then the chip should be accessible.

I hope it will help