[android-components](../../index.md) / [mozilla.components.concept.sync](../index.md) / [DeviceConstellation](index.md) / [startPeriodicRefresh](./start-periodic-refresh.md)

# startPeriodicRefresh

`abstract fun startPeriodicRefresh(): `[`Unit`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) [(source)](https://github.com/mozilla-mobile/android-components/blob/master/components/concept/sync/src/main/java/mozilla/components/concept/sync/Devices.kt#L105)

Begin periodically refreshing constellation state, including polling for events.

