I am developing an nfc application for Android and would like to deal with a tag that can support either NFC-V or NFC-A protocol.
The problem is that when I approach the tag with my phone (Galaxy S2 plus, running android 4.1.2) it detects the NFC-V protocol 90% of the time, and the NFC-A protocol 10% of the time.
What I would like to do is force my phone to only pay attention to one of the two protocols. This mean I would like to configure my phone before touching the tag to only listen to the NFC-V protocol for example.
Is this possible?
This is unfortunately not possible.
The NFC hardware time-multiplexes all the different protocols. If you put your tag near the antenna, and the NFC-chip is currently sensing for for NFC-V you will get NFC-V. Same with NFC-A.