26 lines
667 B
C
26 lines
667 B
C
/** \file
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\brief SPI subsystem
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This is much simpler than Teacup's serial subsystem. No ring buffers, no
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"write string" functions. Usually using SPI directly is faster than fiddling
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with buffers. For example, reading or writing a byte can be done in as few
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as 20 clock cycles.
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Other than serial, SPI has to deal with multiple devices. Device selection
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happens before reading and writing, data exchange its self is the same for
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each device, then.
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*/
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#include "spi.h"
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#ifdef SPI
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#define TEACUP_C_INCLUDE
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#include "spi-avr.c"
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// Each ARM needs it's own file
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// #include "spi-lpc.c"
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// #include "spi-stm32.c"
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#undef TEACUP_C_INCLUDE
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#endif /* SPI */
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