Bosch Sensortec Community

    cancel
    Showing results for 
    Search instead for 
    Did you mean: 

    BMA400 Activity Change Detection

    BMA400 Activity Change Detection

    sjenyart
    Occasional Visitor

    I am using a BMA400 to detect any movement which I will then use as a trigger to display info to the user on a display.  However, if the user begins travelling with the device (i.e. walking/running), then I no longer want to continue to turn on the display so that we can conserve battery.  If the user stops travelling, the display wakeups will be re-enabled.

    I have the BMA400 in autosleep and it is configured to wakeup on any activity.  I have mapped this to int1 and it is working.

    I am have also done what I think is required to also map activity change interrupt to int1 so that if the user has started walking, I can begin ignoring activity wakeups.  I have configured the BMA 400 to stay in normal mode as long as possible to as to detect walk/run and I have set fairly low thresholds. 

    However, I am not seeing actch_<xyz>_int_stat nor am I seeing a non-zero value in step_stat_field.   Does anyone have a known-good actvity change detection config I could use as a baseline?  Maybe I am missing something?

    1 REPLY 1

    BSTRobin
    Community Moderator
    Community Moderator

    Hello sjenyart,

    You could refer "Introduction about BMA400 Auto Wakeup and Auto Low Power" to adjust parameters for your application.
    https://community.bosch-sensortec.com/t5/Knowledge-base/Introduction-about-BMA400-Auto-Wakeup-and-Au...

    Icon--AD-black-48x48Icon--address-consumer-data-black-48x48Icon--appointment-black-48x48Icon--back-left-black-48x48Icon--calendar-black-48x48Icon--center-alignedIcon--Checkbox-checkIcon--clock-black-48x48Icon--close-black-48x48Icon--compare-black-48x48Icon--confirmation-black-48x48Icon--dealer-details-black-48x48Icon--delete-black-48x48Icon--delivery-black-48x48Icon--down-black-48x48Icon--download-black-48x48Ic-OverlayAlertIcon--externallink-black-48x48Icon-Filledforward-right_adjustedIcon--grid-view-black-48x48IC_gd_Check-Circle170821_Icons_Community170823_Bosch_Icons170823_Bosch_Icons170821_Icons_CommunityIC-logout170821_Icons_Community170825_Bosch_Icons170821_Icons_CommunityIC-shopping-cart2170821_Icons_CommunityIC-upIC_UserIcon--imageIcon--info-i-black-48x48Icon--left-alignedIcon--Less-minimize-black-48x48Icon-FilledIcon--List-Check-grennIcon--List-Check-blackIcon--List-Cross-blackIcon--list-view-mobile-black-48x48Icon--list-view-black-48x48Icon--More-Maximize-black-48x48Icon--my-product-black-48x48Icon--newsletter-black-48x48Icon--payment-black-48x48Icon--print-black-48x48Icon--promotion-black-48x48Icon--registration-black-48x48Icon--Reset-black-48x48Icon--right-alignedshare-circle1Icon--share-black-48x48Icon--shopping-bag-black-48x48Icon-shopping-cartIcon--start-play-black-48x48Icon--store-locator-black-48x48Ic-OverlayAlertIcon--summary-black-48x48tumblrIcon-FilledvineIc-OverlayAlertwhishlist