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@@ -34,7 +34,7 @@ SPI slave functions are usually not interoperable between vendors
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- It may also be used to stream data in either direction (half duplex),
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or both of them at the same time (full duplex).
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- - Some devices may use eight bit words. Others may different word
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+ - Some devices may use eight bit words. Others may use different word
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lengths, such as streams of 12-bit or 20-bit digital samples.
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- Words are usually sent with their most significant bit (MSB) first,
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@@ -121,7 +121,7 @@ active. So the master must set the clock to inactive before selecting
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a slave, and the slave can tell the chosen polarity by sampling the
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clock level when its select line goes active. That's why many devices
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support for example both modes 0 and 3: they don't care about polarity,
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-and alway clock data in/out on rising clock edges.
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+and always clock data in/out on rising clock edges.
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How do these driver programming interfaces work?
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@@ -139,7 +139,7 @@ a command and then reading its response.
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There are two types of SPI driver, here called:
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- Controller drivers ... controllers may be built in to System-On-Chip
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+ Controller drivers ... controllers may be built into System-On-Chip
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processors, and often support both Master and Slave roles.
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These drivers touch hardware registers and may use DMA.
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Or they can be PIO bitbangers, needing just GPIO pins.
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@@ -548,7 +548,7 @@ SPI MASTER METHODS
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DEPRECATED METHODS
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master->transfer(struct spi_device *spi, struct spi_message *message)
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- This must not sleep. Its responsibility is arrange that the
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+ This must not sleep. Its responsibility is to arrange that the
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transfer happens and its complete() callback is issued. The two
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will normally happen later, after other transfers complete, and
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if the controller is idle it will need to be kickstarted. This
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John Whitmore