1b8c072802
574b25 broke the internal DMA buffers usage that solved the following problem: The DMA capable interface does not know the buffers extent. It calulates it from size. The user may need to transfer less than a cachline bytes, but STILL have a DMA cabable buffer. The user is therefore foreced to transfer more data then needed to "trick" the DMA cabable function. This is a wast of bus bandwith and may not work will all devices. The internal buffer, solve this issue. stm32h7:stm32_spi review changes Added sugestion from jlaitine to support RX only. |
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