[MYNEWT-881] SensorAPI: Add sensor_clear_low/high_thresh() API and LIS2DH12 set threshold cb fix

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: v1_3_0_rel
• Fix Version/s: v1_4_0_rel
• Component/s: Drivers, Sensor Framework
• Security Level: Public (Viewable by anyone)
• Labels: core
• Environment: ruuvitag-revb2
• Assignee: Vipul Rahane
• Reporter: Vipul Rahane
• Created: 06/Jan/18 00:47
• Updated: 22/Feb/18 21:10
• Resolved: 22/Feb/18 21:10

Description

• 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.

• Add sensor_clear_low_thresh() and sensor_clear_high_thresh() APIs

Issue Links

• links to: GitHub Pull Request #718