NFCのトピックGetting runtime error in nfcDemoApp after adding user stack on PN7160 (Linux NFC Stack)

Getting runtime error in nfcDemoApp after adding user stack on PN7160 (Linux NFC Stack)

Niranjan123 — Fri, 05 Dec 2025 09:36:00 GMT

Hello,

I am working on integrating the PN7160 NFC controller with a Linux-based board (MediaTek Genio-510 EVK).
I have cross-compiled the NXP Linux NFC stack and added the user-space stack (linux_libnfc-nci) into the board. The stack builds successfully and installs correctly, but when I run the demo application, I get a runtime error.

Command: ./nfcDemoApp poll

What I have done:

Enabled required I2C bus and verified PN7160 is detected.
Added libnfc-nci.conf and libnfc-nxp.conf under /usr/local/etc/.
Verified I2C lines with oscilloscope and interrupts appear.
Compiled the stack using the correct cross-toolchain.

Questions:

What does this std::out_of_range: basic_string::substr error typically indicate in the PN7160 Linux NFC stack?
Is it related to missing configuration fields in libnfc-nci.conf or a parsing issue?
Which debug logs should I enable to identify the exact cause?

Any guidance on resolving this issue would be very helpful.

i have attached the complete debug log from the board for reference.
Thank you!

— Niranjan

Re: Getting runtime error in nfcDemoApp after adding user stack on PN7160 (Linux NFC Stack)

KaiLi — Fri, 05 Dec 2025 13:55:22 GMT

Hello @Niranjan123

Please apply the following patch, this issue can be fixed.

Re: Getting runtime error in nfcDemoApp after adding user stack on PN7160 (Linux NFC Stack)

Niranjan123 — Mon, 08 Dec 2025 13:57:36 GMT

Hello,

Thank you for your earlier support.

Our previous error has been resolved, but we are still facing an issue while running the nfcDemoapp.

When we see the main code, the application does not enter InitMode(). We added debug printf statements to confirm this, and the control simply never reaches inside the InitMode function.

Could you please help explain why the initialization is failing or what conditions must be met for InitMode() to execute successfully?

What we have observed:

The code builds correctly.
Debug prints show that execution stops before entering InitMode.
No obvious error logs are printed from the NFC HAL or NCI stack.
IRQ and VEN pins appear to be configured correctly, but the behavior suggests something may be blocking initialization.

If needed, I can share the relevant log snippet and configuration details.

Any guidance on what could cause InitMode to be skipped or fail would be appreciated.

Thank you.

-niranjan