Build error for example code of LIS2DH with nRF SDK v1.3.1

[anirudh]

Hello,

I am using example code of LIS2DH accelerometer sensor with nRF SDK v1.3.1. Building  the example code I am getting macro error in devicetree.h file as mentioned below

#define DT_INST(inst, compat) UTIL_CAT(DT_N_INST, DT_DASH(inst, compat))  

with following message in output

error: 'DT_N_INST_0_st_lis2dh_P_label' undeclared (first use in this function)

Please suggest appropriate solution for the above problem.

Thanks.

[Simon]

You have to add ad an overlay file to your sample and add the LIS2DH as a child node of an I2C (or SPI) node. This will include the LIS2DH to your device tree.

This may be useful: 1.2 Walkthrough for BME280, In order to get the general idea of how to use a sensor in NCS.

This ticket may be helpful as well, note that an older version of NCS was used, so you might have to modify the overlay file.

There are several boards that uses the LIS2DH, it may be useful to look a the dts files of these boards to get an idea of how to add the LIS2DH to the overlay file (device tree):

• https://github.com/nrfconnect/sdk-zephyr/blob/a512e7515e506bab8023a3533e2f851287566699/boards/arm/thingy52_nrf52832/thingy52_nrf52832.dts#L129-L142
• https://github.com/nrfconnect/sdk-zephyr/blob/a87b995bec8717597a81e2eb8b68901dbdc889b4/boards/arm/nrf9160_innblue21/nrf9160_innblue21_common.dts#L87-L100

Best regards,

Simon

[anirudh]

Thanks alot.... its working now!