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Add DMA support for SPI master mode #265

Merged
merged 6 commits into from Aug 5, 2020
Merged

Add DMA support for SPI master mode #265

merged 6 commits into from Aug 5, 2020

Commits on Aug 5, 2020

  1. Improve wording in comment

    @hannobraun
    hannobraun committed Aug 5, 2020
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  2. Specify SPI DMA channels

    @hannobraun
    hannobraun committed Aug 5, 2020
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  3. Refactor

    @hannobraun
    hannobraun committed Aug 5, 2020
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  4. Add REGISTERS constant to spi::Instance

    @hannobraun
    hannobraun committed Aug 5, 2020
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  5. Add support for SPI transactions via DMA 

    This required adding some additional infrastructure that is distinct
from the DMA infrastructure used by other peripherals, as SPI can send
and receive at the same time, using the same buffer.
    @hannobraun
    hannobraun committed Aug 5, 2020
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  6. Use unreachable! for SPI transfer error handling

    @hannobraun
    hannobraun committed Aug 5, 2020
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