SmartMotion® MEMS Motion Sensors

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By gshera , 18 January 2018

For the ICM20948, does the DMP support the magnetic anomaly rejection algorithm? Will using the Algo_InvnOrientation_BodyToWorldFrameFxp_SetMagCustomParams() function adjust the setting in the DMP? The examples for the ICM20648 and ICM20948 do not use this function but the examples for the ICM20602 and ICM207xx do use the function, but the 9 axis fusion for those devices is performed in the host (they have no DMP). eMD-SmartMotoin-1.0.3 for DK-20948.

By amit18 , 11 January 2018

I have an DK-20789 development board which has ATSAMG55J19 processor and I am using Atmel Studio 7.0 .
I want to flash my code in dk-20789 board but unable to find plugin for the same so should I have to purchase any other tool (separate hardware) to flash the board or inbuilt debugger is enough and How ??

By dtecta , 9 January 2018

I'm experiencing some problems with the MPU-9250 accelerometer. When I put the PCB on its side the x- and y-axis show a proper gravity of 1 g (9.8 m/s^2). The z-axis (PCB horizontal) however shows a value of 1.02 g (10 m/s^2). I have calibrated the zero offsets properly by sampling a number of readings upright and sampling an equal number with the PCB upside down, taking the averages, and adding the results. In this way gravity is eliminated in the offsets. After setting the offsets, z-axis reads 10 m/s^2 upright and -10 m/s^2 upside down, so everything is nicely balanced.

By kevinko , 8 January 2018

Hello Invensense Team

How can i controled FIFO in ICM20602?

I want using for attribute

1. GYRO Disable , Accelerometer Enable
2. Use for FIFO
3. Use for 50Hz Accelerometer
4. Use for Low Power
5. 1Sec Read FIFO

Add for Source

And init started in function 'static uint32_t drv_icm20602_set_init(void)'

By sully , 8 January 2018

Hi folks,

I'm looking at 9DoF IC options and I'm having trouble determining the difference between the MPU9250 and ICM20948. Overall their sensor specs, package size, etc are almost identical, so it seems to be mainly power consumption and the separate VDDIO. Is there any page or document that provides a comparison of the two and selection guidance?

Cheers,
sully

By sasha , 4 January 2018

ICM-20689 Manual provides formula for converting Temperature Sensor reading to actual temperature in C:
TEMP_degC = ((TEMP_OUT – RoomTemp_Offset)/Temp_Sensitivity) + 25degC
Unfortunately, I cannot find values of RoomTemp_Offset, Temp_Sensitivity, 25degC.
Can anybody point out where they are?

By garrikus , 21 December 2017

Can someone please tell me what is the temperature unit in MPU 9250 linux driver?

I've looked at the source here https://github.com/NoelMacwan/Kernel-10.4.1.B.0.101/blob/master/drivers/staging/iio/imu/inv_mpu/inv_mpu_core.c#L1112 and in the accompanying README file and I have not got a clue, what sort of temperature I get from the driver.