Mastering Internet of Things

Persisting control parameter states

If the device reboots for some reason, for instance after a power outage, it's normally desirable that it returns to the state it was in before it shut down. For this, we need to persist the output value. We can use the object database defined in Waher.Persistence and Waher.Persistence.Files for this. But for simple control states, we don't need to create our own data-bearing classes. That has already been done by Waher.Runtime.Settings. To use it, we first include the NuGet, as described earlier. We must also include its assembly when we initialize the runtime inventory, which is used by the object database:

Types.Initialize( typeof(FilesProvider).GetTypeInfo().Assembly, typeof(App).GetTypeInfo().Assembly, ...