nRF52832 + ADXL362: “wrong part_id: 255” / device not ready in Zephyr (NCS v3.0.2)

Hello,

I’m trying to bring up an ADXL362 accelerometer over SPI on an nRF52832 DK using NCS v3.0.2 / Zephyr v4.0.99.

What I did

• Base sample: samples/sensor/accel_polling

• Overlay for &spi0 with pinctrl (DK Arduino header pins):

  • SCK = P0.25 (D13)

  • MOSI = P0.23 (D11)

  • MISO = P0.24 (D12)

  • CS = P0.22 (D10) → also tried P0.17

• Added aliases { accel0 = &adxl362; }

• prj.conf has CONFIG_SPI=y, CONFIG_SENSOR=y, CONFIG_ADXL362=y

• Reduced SPI speed: spi-max-frequency = <500000>

• RTT console enabled for logging

What happens

On boot I always see:

My suspicion

It looks like the ADXL362’s SDO pin is not being driven, or CS is never really asserted. Could be:

• Breakout board strapped in 3-wire SPI mode (no SDO routed).

• Incorrect wiring on my breakout’s CS/SDO pin.

• Some oversight in Zephyr overlay.

Question

Has anyone successfully run ADXL362 with nRF52832 in Zephyr?

• Do I need to configure anything special for 4-wire mode?

• Is my overlay missing something?

• Could this be a breakout board (3-wire vs 4-wire) issue?

Any tips, example DTS overlays, or known-good wiring setups would be very helpful.

Thanks in advance!