SmartAutomotive™ Automotive MEMS Motion Sensors

Hello,

I am experimenting with TDK development kits and wanted to use SmartMotion software on Linux device, however the installer available from website is only Windows based!

Is it possible to use the SmartMotion tool on Linux machine?

Hello, I am trying to read spi who_am_i data from 20685HP IMU sensor and see all the data packets received from the sensor have the ERROR bits RS1 and RS0 always set to one. How to find what error actually happened to trigger this state? Is there any register to get to know about this? Also I do not see linux drivers for this device on your github, could you share the drivers?

Hi all,

I'm currently validating the accelerometer self-test results on the ICM-42688-P, and I’ve encountered an issue where the self-test response ratio falls outside the expected ±14% range after applying specific sensor configurations.

Sensor Configuration

ODR:200 kHz
FSR:2g
Accelerometer Filter:3rd-order

Self-Test Validation Method:

I’m following the MPU-6000 datasheet self-test approach, which uses factory-programmed OTP self-test codes to estimate the expected self-test delta. Here's how I’m performing the calculation:

I am currently working on a project involving your ICM-20948 9-axis IMU sensor interfaced with a MAMWLE-02/03 module (based on STM32, using 1.8V I/O) over the I²C bus. However, I am encountering persistent communication issues.

Issue Description:
When I perform an I²C scan, the sensor does not respond at the expected address (0x68 with AD0 low or 0x69 with AD0 high). In some cases, a random or undefined address appears, or no device responds at all.

Hardware Setup:
Host Controller: MAMWLE-02/03 (STM32-based, 1.8V logic)

Sensor: ICM-20948

I would like some help with working out which registers in the IIM-42653 have to be set and with what value is required to initialise the IMU so we can poll it over I2C to get XYZ and collect the results from the 3-axis gyroscope and 3 axis accelerometer.

Hello, I am working with the IAM-20680HT sensor, there is a problem with the SPI interface. You can send the full waveform of SPI transmit and receive. Because what I see in the datasheet for this sensor is not enough and most likely does not work that way. Thanks for the answer
With respect, Alexander.

Hello,
I am currently using iam-20380 gyroscope and i am struggling a little bit with it's FIFO.
1- When we say ODR is 1000HZ and FIFO is 512 bytes. Shouldn't FIFO be filled in close to 1/2 second? Or 1 sample's size = (number of sensors * 2) so 1 sample's size is 8 bytes? then filling time will be .064 Second?
2- If a sensor is disabled will Fifo also read it's register's content or will it skip? Ex: If i am disabling Temperature sensor, will the fifo still read this register content and include it in it's buffer or it'll skip it?

The customer has purchased evaluation board part number EV_IIM-42351 (DK-42351). Please help us to get pinouts and the dimensions of the board

Hardware and Software Details:
Sensor: ICM42688P
Microcontroller: nRF52840
SDK: nRF Connect SDK (NCS) v2.5.1
Use Case: The sensor is integrated into a helmet device that is intended to move during operation.

Issue Description:
We are experiencing an issue with the accelerometer values obtained from the ICM42688P sensor. After converting the raw data to acceleration values in m/s², the readings occasionally exceed the expected range of ±9.806 m/s² (gravitational force). Sometimes, the values go up to ±10.00 m/s², which is not physically accurate.

Hi TDK,

We're unable to slowdown the sample rate, and it appears that SMPLRT_DIV is ignored.
We verified that FCHOICE_B is 00, and our clksel is set to 000.
Can you suggest a reason for these? what are we missing?

thanks a lot,
amotz