Re: iio: imu new driver

[Lars-Peter Clausen <lars@metafoo.de>]

On 4/14/22 12:35, Fawzi Khaber wrote:
> Hello Jonathan,
> We are currently implementing a new driver for an invensense chip similar to
> iio/imu/inv_icm42600. The chip has 2 sensors a gyroscope and an
> accelerometer, and we are wandering if it was better the have two
> IIO devices, one for each sensor, or just one IIO device with two buffers.

Are these two completely independent sensors that only sit in the same 
package or do they share a common clock and the data acquisition can be 
synchronized?

If it is the latter the best might be to have a single device with a 
single buffer.

Typical algorithms that process IMU data, like odometry, want to process 
the accelerator and gyroscope data jointly. If the data gets 
artificially separated into two buffers it first has to be re-aligned, 
which might be tricky to do.

- Lars