LIS2HH12 via SPI connection XYZ axis stall at fixed value

EngHwho · ‎2025-07-15

Hello.

I am working with the STM32U083 and LIS2HH12TR communication via SPI.

Did the SPI settings configuration in mode 3 and build a simple project in cube ide to identify and read the accelerometer data.

The project also does the conversion in mg of the acceleration for all axis.

When I move the axis I was expecting the values to change but there is no change as in picture below: (Debug data via uart ).

Does anyone come out with this kind of problem ?

Could it be sensor (accelerometer) damage, a soldering problem, or something else?

Following the terminal log:

Please support.

Thankyou

TDK · ‎2025-07-15

Unlikely that all readings for all axes are exactly the same. Perhaps a code bug. Doesn't feel like a hardware issue.

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Andrew Neil · ‎2025-07-15

@EngHwho wrote:
Could it be sensor (accelerometer) damage, a soldering problem, or something else?
Thankyou

As @TDK , I'd guess most likely a coding issue.

Have you tried logging just the raw data direct from the accelerometer?

Have you looked at the data on the bus with an analyser?

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.

EngHwho · ‎2025-07-15

Hello. First, thank you for the quick reply. I am a hardware PCB layout Engineer and have very low knowledge and experience in building firmware. I have to do it now because at least I want to test that the SPI bus connections are ok and read just for testing purposes the X, Y, Z axis.

So far, the WhoamI register, as you saw on the terminal log I can read. How can I get some very simple code to test the Axis of this accelerometer? Can you advise me on a link or something?

I tried from gitHub but the code was written for another platform and even "by my code modification(I am not sure how good I was)", could not successfully accomplish the task.

I will appreciate any support.

Thankyou

Andrew Neil · ‎2025-07-15

Perhaps take a look at C-Driver-MEMS ?

via: https://www.st.com/en/mems-and-sensors/lis2hh12.html#tools-software

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.

TDK · ‎2025-07-15

Some options:

Look for code on the internet.
Find a colleague or someone else otherwise invested who can assist.
Pay someone to write it.

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