About PCrow.1

PCrow.1 · 2022-06-28

Hello,My team is developing a product that integrates the LSM6DSM and IIS2MDC, and we would like to use the MotionFX library for sensor fusion. How can we accomplish this, given that we are using a third-party ARM Cortex M4F processor (not STM)?I hav...

PCrow.1 · 2021-10-21

Hello,I am integrating multiple sensors from ST, all of which are connected to a central processor via I2C. Occasionally, I find that the LPS22HB is unresponsive at boot up. When the central processor attempts to read the WHO_AM_I register, there is ...

PCrow.1 · 2022-06-28

Ahh, that is disappointing. I assumed that because we were integrating ST MEMS devices we could also use the MotionFX library.We will look for a different solution from another vendor.Thank you for your help,Peter

PCrow.1 · 2021-11-15

Hello Ricky,Unfortunately I haven't learned anything more about this issue.We are only observing it when JTAG is attached (not in production), so we haven't prioritized any further investigation.Peter

PCrow.1 · 2021-10-26

Further investigation has revealed strange behavior at power-on with JTAG connected. It appears that some current is leaking through the main processor via JTAG and putting the I2C pins in an indeterminate state:When this occurs, the LPS22HB becomes ...

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MotionFX with Third-Party Arm Cortex M4F

What Would Cause the LPS22HB to be Unresponsive via I2C After a Power Cycle?

Re: MotionFX with Third-Party Arm Cortex M4F

Re: What Would Cause the LPS22HB to be Unresponsive via I2C After a Power Cycle?

Re: What Would Cause the LPS22HB to be Unresponsive via I2C After a Power Cycle?