[DMA] Next transfer returns number of remaining data#173

Merged

ryan-summers merged 2 commits intostm32-rs:dmafrom quartiq:feature/number-of-transfers

Jan 4, 2021

+28-14

Commits on Dec 7, 2020

Adding return of remaining transfers
ryan-summers
committed

Commits on Dec 15, 2020

Updating docs, updating next_transfer_with
ryan-summers
committed