Function write

pub unsafe fn write<'a, C: Channel, W: Word>(
    ch: impl Peripheral<P = C> + 'a,
    from: *const [W],
    to: *mut W,
    dreq: TreqSel,
) -> Transfer<'a, C> 

DMA write.

SAFETY: Slice must point to a valid location reachable by DMA.