Bosch Sensortec Community

    cancel
    Showing results for 
    Search instead for 
    Did you mean: 

    BMA423 Step Counter

    BMA423 Step Counter

    katie7
    New Poster

    Hello,

    I am working with the BMA423 accelerometer and trying to use the step counter feature.I was able to get the chip id and have verified the chip by running the self test.I am using the driver from github and doing the following  to enable and get output of the step counter feature. 

    rslt |= bma4_set_accel_enable(BMA4_ENABLE, &dev);
    rslt |=bma4_set_accel_config(&accel_conf, &dev);
    rslt |= bma423_feature_enable(BMA423_STEP_CNTR,BMA4_ENABLE,&dev);
    rslt |= bma423_reset_step_counter(&dev);
    rslt |= bma423_step_counter_output(&step_count , &dev);

    The step counter output for the first time is 00 which is correct.After this, I am trying to get the step counter output in a loop while moving the accelerometer.I get random values out of the Step_counter registers.I am not sure why. Is there anything that looks incorrect for using the step counter feature?

     

    Thank you.

     

     

     

    5 REPLIES 5

    Vincent
    Community Moderator
    Community Moderator

    The step counter register is providing the actual steps you are moving.

    You can try to reset the step counter then walking for while then compare the step counter register value with your ground truth. 

    To make sure the step counter feature working properly, the configure string should be download correctly, sensor should be put into normal or low power mode with at least 25Hz ODR. 

    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