RE: selecting NFC pins (0.9 and 0.10)

cjh39 — Fri, 28 Mar 2025 16:34:32 GMT

Ive tried this and it does not work. How do I set this in Segger so I can use the NFC pins as GPIO / SPI..

Ive added #define CONFIG_NFCT_PINS_AS_GPIOS 1 to the sdk_config.h and also I added the CONFIG_NFCT_PINS_AS_GPIOS here

When I check the nrfjprog --memrd 0x10001000 --n 512, Im getting all F's

How do we turn them off in Segger using the nrf SDK ?

RE: selecting NFC pins (0.9 and 0.10)

Jørgen Holmefjord — Mon, 26 Jun 2023 12:16:24 GMT

Hi,

Can you post a link to the documentation where it states that CONFIG_NFCT_PINS_AS_GPIOS should be set in sdk_config.h?

The references I can find to this config is in the nRF52840 DK (and other DKs) user-guide, where it says:

NFC can be disabled and GPIOs enabled by defining the CONFIG_NFCT_PINS_AS_GPIOS variable in the project settings. The way of doing this depends on the Integrated Development Environment (IDE)/toolchain in use:

When using SEGGER Embedded Studio, select Project > Edit Options > Code > Preprocessor > Preprocessor Definitions and add the CONFIG_NFCT_PINS_AS_GPIOS variable.

When using Keil, go to Project > Options for Target > C/C++ > Preprocessor Symbols > Define and add the CONFIG_NFCT_PINS_AS_GPIOS variable.

If you are using GCC, adding the symbol to CFLAGS in the Makefile is the correct approach.

Best regards,
Jørgen