Question about PN7160 example - SW6705

OilCastle — Wed, 18 Mar 2026 10:27:39 GMT

Hi.
I'm trying to add the SW6705 code to my Zephyr based project.

The compiler returned some warnings and I also think it looks weird.

- File
\\NXP-NCI2.0_MCUXpresso_examples\NXP-NCI2.0_LPC55S6x_examples\NfcLibrary\NxpNci20\src\NxpNci20.c
- Line number: 989

if (AnswerSize != 0) { /* Flush any other notification */ while(Answer != 0) NxpNci_WaitForReception(Answer, sizeof(Answer), &AnswerSize, TIMEOUT_100MS); /* Restart the discovery loop */ NxpNci_HostTransceive(NCIRestartDiscovery, sizeof(NCIRestartDiscovery), Answer, sizeof(Answer), &AnswerSize); NxpNci_WaitForReception(Answer, sizeof(Answer), &AnswerSize, TIMEOUT_100MS); } goto wait;

I think "while(Answer != 0)" could be a problem because that symbol is pointer, not regular variable.

uint8_t NCIRfDiscoverSelect[] = {0x21, 0x04, 0x03, 0x01, PROT_ISODEP, INTF_ISODEP}; uint8_t Answer[MAX_NCI_FRAME_SIZE]; uint16_t AnswerSize;

I'm not sure what's the intention of this code.

Please, someone explain to me about this.

(If I'm missing something, please let me know.)

Thank you.

Re: Question about PN7160 example - SW6705

EduardoZamora — Thu, 19 Mar 2026 00:13:02 GMT

Hello @OilCastle

Hope you are doing well.

That portion of code is related to Peer-to-Peer (P2P) support; this functionality is deprecated.

If not required, you can skip the code wrapped within "REMOVE_P2P_SUPPORT" macro.

Regards,
Eduardo.

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Question about PN7160 example - SW6705

Re: Question about PN7160 example - SW6705