Regarding the Startup Confirmation of ASM330LHH

[ggob]

Could you please let me know at what point we can confirm that the ASM330LHH has successfully started up at the hardware level?
If the WHO_AM_I register returns the expected response, can we consider that the device has initialized correctly?

Additionally, after enabling the sensors via CTRL1_XL and CTRL2_G, is it possible to verify proper startup by checking whether the value of STATUS_REG changes?
In a situation where the STATUS_REG value sometimes changes and sometimes does not, is it appropriate to judge that “no change” indicates the hardware has not successfully started?

Thank you very much for your guidance.

[Federica Bossi]

Hi @ggob ,

Yes, reading the WHO_AM_I register and receiving the expected fixed device ID is the primary indication that the device is responding correctly at the hardware level and communication is established.

The STATUS_REG bits indicate the availability of new data for accelerometer and gyroscope, after enabling accelerometer and gyroscope by writing to CTRL1_XL and CTRL2_G, you should expect the STATUS_REG bits to change as new sensor data becomes available.

No change in STATUS_REG over a reasonable time period (considering configured ODR) may indicate the sensor is not producing data, possibly due to incomplete startup or configuration issues.