espalarm Code

Start with unknown armed status

Report negative temperatures correctly

Clean up communication paths

Pass remote status change commands correctly.

Remove dead code.
Add code to clean up a peer after disconnection.
Some renaming for consistency.

Cosmetic : don't print trailing newline

Fix several small issues with TCP connectivity

Verbosity changes.
Remove dead code.

Oled : delay processing some calls to ensure they're handled from the main thread.
Peers : connection handling bugfixes, verbosity tweaks.

TCP communication bugfixes