bmi160 zephyr sensor driver + nrf5340

RE: bmi160 zephyr sensor driver + nrf5340

helsing — Mon, 28 Mar 2022 13:56:47 GMT

Something else to try is changing int-gpios = <&gpio0 20 0>; to some other pin than P0.20 as this pin seems to be already occupied by uart0 tx_pin.

RE: bmi160 zephyr sensor driver + nrf5340

helsing — Sun, 27 Mar 2022 09:40:04 GMT

Hi szhai lai, sorry for the long delay.

Have you had any look at the SPI signals? Is there any activity at all? Would you be able to share a trace from an oscilloscope?

Would you be able to share an image of your setup?

You could also try lowering the clock frequency for SPI.

RE: bmi160 zephyr sensor driver + nrf5340

helsing — Mon, 14 Mar 2022 20:45:37 GMT

Thank you for sharing your project. I will take a look tomorrow and get back to you.

RE: bmi160 zephyr sensor driver + nrf5340

szhaulai — Sat, 12 Mar 2022 16:43:46 GMT

I attach the project in case I missed other information.devzone.nordicsemi.com/.../0066.adxl372.zip

RE: bmi160 zephyr sensor driver + nrf5340

szhaulai — Sat, 12 Mar 2022 16:14:29 GMT

Hi, I forget to mention that I use nrf5340dk board. In that case, SPI2 pin is defined in the nrf5340_cpuapp_common.dts file.

I changed 76 to 0 but it doesn't make any difference.

One thing I recognized from the example you provided, CONFIG_SPI_1=y is presented in prj.conf, which is not configured in my setup.

However, when I add CONFIG_SPI_2=y to my prj.conf(I use SPI2), which gives

"warning: attempt to assign the value 'y' to the undefined symbol SPI_2" and "error: Aborting due to Kconfig warnings"

(I use visual studio to compile instead of segger, I don't know if it gives different result)

Please help!

RE: bmi160 zephyr sensor driver + nrf5340

helsing — Fri, 11 Mar 2022 15:26:44 GMT

Hi,

The first thing I notice is that your overlay needs a few changes. I found another case where an overlay was specified for BMI160. I am not sure whether they got it right, however, it might provide you with a few hints :https://devzone.nordicsemi.com/f/nordic-q-a/73433/bmi160-sample-on-custom-nrf9160

You will need to specify the pins for the SPI interface. Also you do not need the address '76'. Also replace '76' with '0'.

I will take a closer look next week.

Håkon