machine: add DMA support to spi tx #1176
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941ea4e28b4c5cdfe877ef299cecbb2d3552f851
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I think we'll always want to use DMA. That is an easier to use API and likely faster overall. |
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I'm going to try and make it. |
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I plan to switch to the method used in the following PR. |
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I made the call to SetupDMA() to use DMA to send.
If no call is made, send it without DMA.
At the moment, it is wioterminal-only and most of the possible values cannot be set.
The source code is messy and not clean.
However, I think the future of effective use of the DMA can be examined on the basis of this PR.