The "arg" field on nanopb structs is a void* because it is shared
between the encode and decode callbacks, even though the encode
callback probably should not modify the data. We are passing const data
using this non-const pointer, which causes warnings about discarding
const. This commit explicitly casts to void* to suppress these warnings.
* To avoid tons of migration, extra flash writes, etc, we keep
the keymaps and settings using a key position index that's tied
to the stock layout, and at runtime mapping key positions as
needed.
* More fine grained status reporting when saving changes. Needed to we
can notify the client if we've got errors saving settings due to
running out of space, etc.
* Return the max layer name lenght in the keymap payload, for the UI to
leverage.
* Add keymap API for getting/setting a bindings
in keymap layers.
* Add layer move support via intemediary ordering array.
* Add settings storage for keymap changes.
Joel Spadin
Pete Johanson