PPI macro

ppi-macro.rs

macro_rules! ppi {
    (
        not_fixed: [ $(
            $(#[$attr:meta])?
            ($ppix:ident, $PpixType:ident, $ch:expr),)+
        ],
        fixed: [$(($ppix_fixed:ident, $PpixTypeFixed:ident, $ch_fixed:expr),)+],
    ) => {

        $(
            $(#[$attrs])?
            pub struct $PpixType {
                _private: (),
            }

            $(#[$attrs])?
            impl Channel for $PpixType {
                const CH: usize = $ch;
            }

            $(#[$attrs])?
            impl NotFixed for $PpixType {}
        )+

        $(
            pub struct $PpixTypeFixed {
                _private: (),
            }

            impl Channel for $PpixTypeFixed {
                const CH: usize = $ch_fixed;
            }
        )+

        pub struct Parts {
            $(
                $(#[$attrs])?
                pub $ppix: $PpixType,
            )+
            $(
                pub $ppix_fixed: $PpixTypeFixed,
            )+
        }

        impl Parts {
            pub fn new(_regs: PPI) -> Self {
                Self {
                    $(
                        $(#[$attrs])?
                        $ppix: $PpixType {
                            _private: (),
                        },
                    )+
                    $(
                        $ppix_fixed: $PpixTypeFixed {
                            _private: (),
                        },
                    )+
                }
            }
        }
    };
}