We can't register hooks from constructors, because there is no guaranteed order
in which the objects will be created. So it may well happen that the Keyboardio
object gets created later, and zeroes out everything. Or it gets created first,
and registers the default handler as the first one, making all the others
pointless.
Instead, we create a KeyboardioPlugin class, that has a `begin` method. This is
responsible for setting up the hooks and whatnot. To make things simpler (for
some values of simple), a `Keyboardio.use` method is introduced, which, when
given a NULL-terminated list of plugin object pointers, will call the begin
method of each.
All LED effects and other plugins that used to register a static object now use
an extern, and had their initialization moved to the `begin` method.
The end result is not the nicest thing, but it works. We can try figuring out
something nicer later.
Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>
Use dot_a_linkage for the Keyboardio-Macros library, and as a
consequence, declare the Macros variable static instead of extern, so
that it gets compiled and linked in even when not referenced directly.
Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>
The main thing here is `Macros_::play`, which takes a list of bytes from
PROGMEM, and plays a macro. The array is always a command, followed by
arguments, and the size of the argument depends on the command: key presses and
releases take a 16-bit argument, and the event is injected into the event
handler flow. Waiting and interval change take a 8-bit time. Helpers are
provided to make it a little bit easier to construct a macro.
Of course, the `macroAction` method may do any other side effects, and is not
restricted to returning a sequence of commands.
Fixes#5.
Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>
Gergely Nagy