Interfacing ST IMU(LSM6DSV) with nRF52840dk via SPI interface

RE: Interfacing ST IMU(LSM6DSV) with nRF52840dk via SPI interface

Vidar Berg — Thu, 17 Jul 2025 05:15:52 GMT

I had a quick look at the datasheet and it seems like all that is needed to switch to SPI mode on this sensor is to pull the CS signal low before initiating the transfer. There is also the LSM6DSL IMU sensor sample in the SDK.

If you have a logic analyzer or oscilloscope, I recommend probing the bus lines to troubleshoot further.

RE: Interfacing ST IMU(LSM6DSV) with nRF52840dk via SPI interface

4past12 — Wed, 16 Jul 2025 13:40:19 GMT

Okay, I just switched pin option, but it still does not work

Is there any chance if the sensor is not set in SPI mode?

RE: Interfacing ST IMU(LSM6DSV) with nRF52840dk via SPI interface

Vidar Berg — Wed, 16 Jul 2025 10:55:30 GMT

Hello,

The pins you have assigned to the SPI are connected to the on-board SPI flash by default: https://docs.nordicsemi.com/bundle/ug_nrf52840_dk/page/UG/dk/hw_external_memory.html. You can look at the silkscreen on the board (backside) to find some pins that are available. For example, p0.2, p0.28, and p0.29.

Best regards,

Vidar