Vipul Rahane updated MYNEWT-881:
    Summary: SensorAPI: LIS2DH12 set threshold cb fix and   (was: SensorAPI: 
LIS2DH12 set threshold callback cannot get called multiple times)

> SensorAPI: LIS2DH12 set threshold cb fix and 
> ---------------------------------------------
>                 Key: MYNEWT-881
>                 URL: https://issues.apache.org/jira/browse/MYNEWT-881
>             Project: Mynewt
>          Issue Type: Improvement
>      Security Level: Public(Viewable by anyone) 
>          Components: Drivers, Sensor Framework
>    Affects Versions: v1_3_0_rel
>         Environment: ruuvitag-revb2
>            Reporter: Vipul Rahane
>            Assignee: Vipul Rahane
>            Priority: Major
>              Labels: core
>             Fix For: v1_4_0_rel
> There are two issues for calling the lis2dh12_sensor_set_trigger_thresh() :
> 1. gpio irq was not being released before doing a re-initialization
>  2. srec was malloced and calling the function multiple times would have 
> malloced additional memory without freeing it.
> Solution:
>  1. Release the gpio irq
>  2. Remove the malloc and add a ptr for the sensor in each type trait so that 
> a sensor read could be performed in the irq handler.
> Also, sensor_unset_thresh() API was added to unset thresholds 
> triggers/interrupts.

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