[SDL 0170] SDL behavior in case of LOW_VOLTAGE event

[theresalech]

Proposal: SDL behavior in case of LOW_VOLTAGE event

This proposal defines SDL behavior when HMI requires SDL's services to be suspended due to a low voltage event. A low voltage scenario is triggered when the battery voltage hits below a certain predefined threshold set by the system. In case of such an event, the EMMC is turned off and all read/write operations are unavailable. After the voltage level is restored all operations are resumed.

Review: smartdevicelink/sdl_evolution#489

Steering Committee Decision:

The Steering Committee has voted to accept this proposal with revisions. The revisions will include the use of 3 signals of the range SIGRTMIN - SIGRTMAX for LowVoltage, WakeUp and IgnitionOff - in place of using mqueue messages.

The proposal .md was updated on June 5, 2018 to include the agreed upon revisions.

[theresalech]

Proposal markdown file has been updated per the revisions included in accepted Evolution Proposal SDL 0170 Revisions - Accepted SDL behavior in case of LOW_VOLTAGE event: Resumption during Low Voltage.

[jacobkeeler]

Closing with the merge of #2418