I need to implement nRF52833 with RFID-RC522 connected by SPI port using the SDK v2.4.2

RE: I need to implement nRF52833 with RFID-RC522 connected by SPI port using the SDK v2.4.2

Bitti_1 — Fri, 14 Nov 2025 15:00:25 GMT

Hey im facing same kind of issue. Using nRF52840 dongle and trying to initialize RFID-RC522 reader to it via SPI. Cant get version register out of the reader. Been using this for a sample https://github.com/mervedamar/MFRC522-NRF52.git. could any one help with this one please!

RE: I need to implement nRF52833 with RFID-RC522 connected by SPI port using the SDK v2.4.2

Håkon Alseth — Fri, 29 Dec 2023 08:53:40 GMT

Hi,

You can add both src and include paths by editing your CMakeLists.txt file, similar to how it is done here:

https://github.com/nrfconnect/sdk-nrf/blob/main/samples/net/aws_iot/CMakeLists.txt#L13-L18

Kind regards,

Håkon

RE: I need to implement nRF52833 with RFID-RC522 connected by SPI port using the SDK v2.4.2

Ova — Thu, 28 Dec 2023 16:39:51 GMT

Hi Hakon

I am using an example project, I put the two files (file.c and file.h) of the libraries in the same directory as main.c . In main.c I put the line that includes file.h. But in VSCode I have several errors and it does not take the function declarations.
What is the correct way to add the libraries in an example project? I am using the SDK version 2.4.2. Thank you very much in advance for your help.

RE: I need to implement nRF52833 with RFID-RC522 connected by SPI port using the SDK v2.4.2

Håkon Alseth — Wed, 27 Dec 2023 13:01:35 GMT

Happy to help. Hope you have a wonderful day!

Kind regards,

Håkon

RE: I need to implement nRF52833 with RFID-RC522 connected by SPI port using the SDK v2.4.2

Ova — Wed, 27 Dec 2023 11:11:02 GMT

Thank you very much for your help

RE: I need to implement nRF52833 with RFID-RC522 connected by SPI port using the SDK v2.4.2

Håkon Alseth — Thu, 21 Dec 2023 13:44:14 GMT

Hi,

You can, but you'll have to port it.

Here's a nrfx_spim sample:

https://github.com/zephyrproject-rtos/hal_nordic/blob/master/nrfx/samples/src/nrfx_spim/blocking/main.c

And here is a SPI driver sample for zephyr:

https://github.com/too1/ncs-spi-master-slave-example

Kind regards,

Hpkon