SmartMotion® MEMS Motion Sensors

Hi,

Is the FIFO watermark threshold configurable on the ICM-20948? I was wondering if this information is missing from the latest datasheet v1.3.

Thanks!

I am using ICM20648 with ICM20648_eMD_nucleo_1.0 driver.
File invn/firmware/emd-mcu/nucleo/icm20648/iar-cm4-fpu/1.0.0/sources/Invn/Devices/Drivers/Icm20648/Icm20648DataBaseControl.c lines 392-393 are as follows:

` // estimate closest decimator value to have 56Hz multiple and apply it
lBACMinDly = 1000/(get_multiple_56_rate(lBACMinDly));`

The comment is inaccurate, as to get the closest value one needs the following code:

I have an application running on the MPU9250, using the inv_mpu and inv_mpu_dmp_motion_driver files to interface the sensor with my application. We wish to port our code to the ICM 20948, but I have not found similar files as the inv_mpu to make our migration easier. Is there any file similar to what the inv_mpu file is doing? We are using a dsPic33e development board to interface with the ICM20948

Hi,
I am just reading raw data of accelerometer of ICM-20602. Y-axis is responding to the movements while Z-axis variations are very slightly varying. Only X-axis values is constant always. I have checked with gyroscope all the axis are working fine. I don't find whether there is any bit to enable 3-axis mode of accelerometer or something similar. Please help me.

Hi,

We are using ICM 20948 9 axis sensor in our HW design. We are using Android 8.1.

We are now bringing-up ICM 20948 on Android platform.

Is there any Android HAL layer (by Invnsense) available for us to port?

NOTE: We downloaded eMD-SmartMotion-ICM20948-1.1.0-MP and found something related to Android (EMD-Core/sources/Invn/Devices/Drivers/ICM20948/). However, we coundn't find any portiung guide or the HAL for Android.

Thank you and looking forward.

Thanks,
San

Please guide me to enable wake on motion with icm20948 on nrf52832. I put my host controller in sleep but I am unable to wake it using wake on motion interrupt. I have used spi to connect the icm20948 with nrf52832.
Here is the code I'm using to enable wom and set threshold.

We are currently using a MPU9250 for one of our products and have been with no issues for some time.
Recently we have been seeing a high number of accelerometers appearing to fail were the X Axis and sometimes Y and Z read full scale and will not move from the state.
Just wondered if anyone has seen this and if this is a sign of a damaged accelerometer.
As bit of background info in case it is relevant this device is encased in an epoxy resin for sub sea application.

Thanks in advance

Matt

Hello,

it seems that the ICM 20948 sensor hangs when I reset the development board when an I2C transaction is happening.
How do I recover the sensor from this?
There's no hardware reset, resetting the development board does not solve the issue just power cycling.
(doing a soft reset is not an option as it's non responsive to I2C commands :) )

Any ideas on this?

thank you,
Lorand

Hi Guys,

I'm using the GRV to keep a target vector pointing to the same direction,
when I rotate the development board really slowly, ~1degree/2-4 seconds, the GRV completely "ignores" this rotation no matter what full scale range I use.

Is this normal?
Does anyone have any tips how to solve this issue?

thank you,
Lorand

I'm using the SmartMotion Platform DK-20948.

I've been able to successfully communicate with the board using the SmartMotion MotionLink software to get the raw sensor data (so I don't think there's any issue with the board itself), however I want to be able to use InvenSense's provided eMD software for the sensor fusion capabilities. I've flashed the MCU with the firmware (.elf file) for the ICM- provided in the "SmartMotion Platform 1.6.5" and then tried running the "sensor-cli.exe" a variety of ways. Each time I get one of two errors: