Failed to build due to "identifier "DT_N_S_soc_S_spi_40003000_P_clock_frequency" is undefined"

RE: Failed to build due to "identifier "DT_N_S_soc_S_spi_40003000_P_clock_frequency" is undefined"

xuezhi_zed — Thu, 27 Jun 2024 15:44:02 GMT

As I learn more on nrf chip, i think is just happened due to different version of ncs package which has impact on the device tree. I did not spot out any obvious errors from my code. Going to close this first. Follow the latest example from ncs tutorial.

RE: Failed to build due to "identifier "DT_N_S_soc_S_spi_40003000_P_clock_frequency" is undefined"

xuezhi_zed — Fri, 21 Jun 2024 03:12:38 GMT

Yes, i have completed the course, and I am following that right now. But when I try to use what I learnt to debug this code, it does not work as expected. So i post here to check if anyone has a similar issue and knows the reason. then it will help my further development.

RE: Failed to build due to "identifier "DT_N_S_soc_S_spi_40003000_P_clock_frequency" is undefined"

Kazi Afroza Sultana — Thu, 20 Jun 2024 13:00:18 GMT

Hello,

It looks like you want to add this sensor MAX86141 as a slave device under SPI0. But You have not defined this in device tree. I would like to recommend you look at the SPI chapter of NCS Intermediate course.

https://academy.nordicsemi.com/courses/nrf-connect-sdk-intermediate/lessons/lesson-5-serial-peripheral-interface-spi/

RE: Failed to build due to "identifier "DT_N_S_soc_S_spi_40003000_P_clock_frequency" is undefined"

xuezhi_zed — Thu, 20 Jun 2024 11:13:45 GMT

I did not manage to find the errors in my overlay file , may i know if you are referring to any example/ tutorial ? cuz i did not see this DT_PROP in the sample files alr

RE: Failed to build due to "identifier "DT_N_S_soc_S_spi_40003000_P_clock_frequency" is undefined"

smul — Thu, 20 Jun 2024 09:43:03 GMT

Hi, I don't have the direct answer for you, but these pages might be worth a read:

Scroll down for an SPI example
https://docs.zephyrproject.org/latest/build/dts/howtos.html#use-devicetree-overlays

and

https://docs.zephyrproject.org/latest/kernel/drivers/index.html

In my implementation I use a macro

#define MY_SPI  DT_PROP(DT_NODELABEL(spi2), label)