Reading LIS2DH12 register via SPI

RE: Reading LIS2DH12 register via SPI

Priyanka — Mon, 02 Dec 2024 13:23:09 GMT

Hi,

Apologies for the delay. Since you are using a custom board I cannot reproduce them here.

From your project dts files, it looks like you are assigning pins 6,7,8,and 9 from the SPI's MOSI, MISO, CS and SCK which you confirm are properly connected and solely being used for the purpose.

Could you try reducing the speed from 10MHz to something less than 8MHz as it's not supported? Do you still face the issue?

If you still get the issue, maybe you could use GPIO to set and clear the SCK pin and observe the signal on a logic analyzer.

-Priyanka

RE: Reading LIS2DH12 register via SPI

backstreet.devisor — Thu, 14 Nov 2024 18:11:30 GMT

Hi Priyanka.

Yes, I can confirm that these pins are used exclusively for connecting the accelerometer via SPI and nothing else.

I even reassigned SCK to another pin (P0.15), but the result was the same - no signal on SCK.

Does my project work on your hardware?

RE: Reading LIS2DH12 register via SPI

Priyanka — Thu, 14 Nov 2024 10:46:31 GMT

Hi,

[quote user=""] I don't understand why in devicetree editor the maximum frequency is 8MHz, although I set it to 10MHz?[/quote]

I think this is probably because the maximum supported speed for the 52810 is 8MHz :

[quote user=""]For some reason there is no signal on the SCK line (although there is physical contact between the microcontroller and LIS2DH12). [/quote]

Could you check that the pins you have used for the SPI communication , P0.06 - P0.08 are used solely for the SPI communication and are not used otherwise anywhere?

-Priyanka

RE: Reading LIS2DH12 register via SPI

backstreet.devisor — Mon, 11 Nov 2024 09:16:46 GMT

Hi Priyanka.
Have you been able to identify the problem in the project?

RE: Reading LIS2DH12 register via SPI

backstreet.devisor — Thu, 07 Nov 2024 20:07:55 GMT

Hi Priyanka.

Here is an archive with the project itself and the *dts and pinctrl files for the custom board.

devzone.nordicsemi.com/.../SPI-Project.rar

Thanks.

RE: Reading LIS2DH12 register via SPI

Priyanka — Thu, 07 Nov 2024 19:09:48 GMT

Hi,

Is it possible to attach your project file here so that I can try to reproduce the issue?

Regards,

Priyanka

RE: Reading LIS2DH12 register via SPI

backstreet.devisor — Tue, 05 Nov 2024 13:16:08 GMT

Hi!

Any news?