state

Dashboard state kept in RTC memory, which survives deep sleep.

{“readings”: {…}, “online”: bool, “fetched”: start of the last fetch (s),

“header”: header dict (see header)}

Kept in RTC memory rather than flash, since it is written on every wake and needs no copy across power loss. rtc is machine.RTC() on the board, a fake in tests.

Attributes

MAX_SIZE

Functions

save(rtc, state)	Store state as JSON in RTC memory.
load(rtc)	The saved state, or None after power loss or if it is unreadable.

Module Contents

state.MAX_SIZE = 2048

state.save(rtc, state)

Store state as JSON in RTC memory.

Raises:

ValueError – If it does not fit into MAX_SIZE bytes.

state.load(rtc)

The saved state, or None after power loss or if it is unreadable.