Lowering Thingy 52 motion sensor update rate

[Paul]

I'm looking at decreasing the motion sensor update rates for the Thingy:52 to get less frequent readings into the sample app. I have seen in the MPU9250 specs that I don't have to lower the motion processing algorithm because they need to run at high rate, in order to provide accurate results.

Is it possible to decrease the quaternion update rates thru the configuration view of the Android app ? To do so, do I have to change the set of the BLE connection interval in the app by changing either BLE_GAP_ADV_INTERVAL_MIN and BLE_GAP_ADV_INTERVAL_MAX in Utils.java ?

Is there a minimum update rate in the motion sensor similar to the one in the temperature sensor (100ms) ?

[Bjørn Kvaale]

Hi,

You should be able to reduce the data rate in the thingy app itself. Have you tried this yet?

Kind Regards,

Bjørn

[Paul]

Hi Bjorn,

Do you mean using the drv_mpu9250_write() function (from Thingy API) to change the data rate directly to the mpu9250 register ? 

[Bjørn Kvaale]

No, in the Thingy Android app, you can go to Configuration -> Advanced tab -> Motion Settings -> change the Motion interval.

[Paul]

We 've tried that but with awkwards results. We'll try again an update this thread if necessary. Thanks anyway Bjorn

[Paul]

After Uninstall/Reinstall of the Nordic Thingy App, we've been able to modify the motion frequency.

Thanks for the help