# `Modbuv.FcMap`
[🔗](https://github.com/ultra0224/modbuv/blob/v0.1.0/lib/modbuv/fc_map.ex#L1)

Server/Slave function-code registry: maps a numeric function code to the
direction, data width, address region, and (for writes) single/multi layout.

# `default`

```elixir
@spec default() :: map()
```

# `lookup`

```elixir
@spec lookup(map(), integer()) :: {:ok, tuple()} | :error
```

# `merge`

```elixir
@spec merge(map()) :: map()
```

---

*Consult [api-reference.md](api-reference.md) for complete listing*