Add default functions to MouseReport, MediaKeyboardReport and SystemC…

[borisfaure]

…ontrolReport

It was already there for KeyboardReport where documentation is added to the function

[twitchyliquid64]

I'm guessing this isnt a Default implementation so it can be a const fn?

[borisfaure]

Actually it can be Derived and would produce the same. Thus I've removed the custom default for KeyboardReport. It took the opportunity to merge in PR#65.

[borisfaure]

Hi, Any update on this PR?
Thanks

[twitchyliquid64]

Whelp we should have tested it 😅

error[E0277]: the trait bound `[u8; 64]: core::default::Default` is not satisfied
   --> src/descriptor.rs:985:5
    |
973 | / #[gen_hid_descriptor(
974 | |     (collection = APPLICATION, usage_page = FIDO_ALLIANCE, usage = U2F_AUTHENTICATOR_DEVICE) = {
975 | |         (usage = INPUT_REPORT_DATA, logical_min = 0x0) = {
976 | |             #[item_settings data,variable,absolute] data_in=input;
...   |
981 | |     }
982 | | )]
    | |__- in this procedural macro expansion
...
985 |       pub data_in: [u8; 64],
    |       ^^^^^^^^^^^^^^^^^^^^^ the trait `core::default::Default` is not implemented for `[u8; 64]`
    |
    = help: the following other types implement trait `core::default::Default`:
              [T; 0]
              [T; 1]
              [T; 2]
              [T; 3]
              [T; 4]
              [T; 5]
              [T; 6]
              [T; 7]
            and 27 others
    = note: this error originates in the derive macro `Default` which comes from the expansion of the attribute macro `gen_hid_descriptor` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0277]: the trait bound `[u8; 64]: core::default::Default` is not satisfied
   --> src/descriptor.rs:986:5
    |
973 | / #[gen_hid_descriptor(
974 | |     (collection = APPLICATION, usage_page = FIDO_ALLIANCE, usage = U2F_AUTHENTICATOR_DEVICE) = {
975 | |         (usage = INPUT_REPORT_DATA, logical_min = 0x0) = {
976 | |             #[item_settings data,variable,absolute] data_in=input;
...   |
981 | |     }
982 | | )]
    | |__- in this procedural macro expansion
...
986 |       pub data_out: [u8; 64],
    |       ^^^^^^^^^^^^^^^^^^^^^^ the trait `core::default::Default` is not implemented for `[u8; 64]`
    |
    = help: the following other types implement trait `core::default::Default`:
              [T; 0]
              [T; 1]
              [T; 2]
              [T; 3]
              [T; 4]
              [T; 5]
              [T; 6]
              [T; 7]
            and 27 others
    = note: this error originates in the derive macro `Default` which comes from the expansion of the attribute macro `gen_hid_descriptor` (in Nightly builds, run with -Z macro-backtrace for more info)

For more information about this error, try `rustc --explain E0277`.
error: could not compile `usbd-hid` (lib) due to 2 previous errors
warning: build failed, waiting for other jobs to finish...
error: could not compile `usbd-hid` (lib test) due to 2 previous errors