stable

Look up stable.for, which passes a value only after it holds steady for a duration.

The stable module removes short changes from a signal. Import it with import stable.

for

Passes a value only after the value stays the same for duration.

durationi64 ns* Required

How long the value must stay the same, such as 500ms.

duration takes a literal or a variable. A new variable value applies from the next change of the input value.

• Input -> a numeric or bool value. A str value gives the error stable.for input must be a numeric or bool type, got str.
• Output -> the steady value, of the same type as the input. It has the time of the cycle that sends it.
• Runs -> on each new input value. A change of value starts the hold time again, from the timestamp of that value. When an input arrives after the value has held for duration, stable.for sends the value once. It sends again only when a different value holds for duration.

Because stable.for checks the hold time only when an input arrives, a slow channel can send the value later than duration. When its stage starts, stable.for forgets the last value.

import stable

tank_pt > 500 -> stable.for{duration=500ms} -> high_pt

stable.for works the same on the Core and on a Driver.