iNemo (LSM6DS3) with external trigger

[Alan Chambers]

Posted on January 09, 2017 at 10:41

I would like to use an iNemo with an external magnetometer (i.e. Sensor Hub mode) to gather data and place acc, gyr and mag readings in the FIFO. Is it possible to have the mag drive the ODR of the iNemo with its data ready line?

The mag data is the most important, and it would be nice to collect data at its max ODR of 220Hz. The iNemo supports rates of 208Hz, 416Hz, and so on. I would prefer to avoid rates where I get duplicates or dropouts in the mag data.

Thanks.

[Miroslav BATEK]

Posted on January 10, 2017 at 21:02

I think it is not possible to drive LSM6DS3 ODR by external magnetometer, but I will check it with specialist on this sensor and come back to your question.

[Alan Chambers]

Posted on January 11, 2017 at 09:58

Thank you. I've found some comments in AN4650 which indicate that the MASTER_CONFIG (1Ah) register can be used to make INT2 into an input which triggers the sensor hub. I'd appreciate any additional information you might be able to provide.