Working to impl embedded-dma for SPIM #234
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added 3 commits
September 28, 2020 02:18
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Looks great to me! Perhaps return the buffers aswell in |
kalkyl
reviewed
Sep 28, 2020
| mut rx_buffer: RxB, | ||
| ) -> Result<TransferSplit<T, TxB, RxB>, (Self, Error)> | ||
| where | ||
| TxB: ReadBuffer<Word = TxW>, |
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| TxB: ReadBuffer<Word = TxW>, | |
| TxB: ReadBuffer<Word = TxW> + 'static, |
Based on the matrix channel discussion today it looks like we need + 'static bounds on these buffers aswell
| ) -> Result<TransferSplit<T, TxB, RxB>, (Self, Error)> | ||
| where | ||
| TxB: ReadBuffer<Word = TxW>, | ||
| RxB: WriteBuffer<Word = RxW>, |
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| RxB: WriteBuffer<Word = RxW>, | |
| RxB: WriteBuffer<Word = RxW> + 'static, |
derekdreery
reviewed
Mar 11, 2021
| // | ||
| // This event is triggered once both transmitting and receiving are | ||
| // done. | ||
| while !self.is_spi_dma_transfer_complete() {} |
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Is there an alternative to spinning here: could we setup an interrupt and go to sleep? I'm not an expert at all so apologies if this is a silly suggestion.
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I'm trying to use this SPI master abstraction, but am struggling because power consumption is very important and I can't see a way to disable the SPI in the current API. This patch would solve the problem for me I think. |
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CC @kalkyl, also fixed a SPIS item