Macro define_dual_bitwheel 

macro_rules! define_dual_bitwheel {
    (
        $name:ident,
        $timer:ty,
        periodic: { gears: $p_gears:expr, resolution_ms: $p_res:expr, slot_cap: $p_cap:expr },
        oneshot: { gears: $o_gears:expr, resolution_ms: $o_res:expr, slot_cap: $o_cap:expr, max_probes: $o_probes:expr }
    ) => { ... };
}

Convenience macro for defining custom dual wheel configurations.