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2 Commits

Author SHA1 Message Date
Damien George 58ebeca6a9 drivers/bus: Pull out software SPI implementation to dedicated driver. 
This patch takes the software SPI implementation from extmod/machine_spi.c
and moves it to a dedicated file in drivers/bus/softspi.c.  This allows the
SPI driver to be used independently of the uPy runtime, making it a more
general component.
 2018-03-10 00:59:43 +11:00
Damien George 1da2d45de6 drivers/bus: Add QSPI abstract type with software QSPI implementation. 
A new directory drivers/bus/ is introduced, which can hold implementations
of bus drivers.  A software QSPI implementation is added.
 2018-03-02 23:52:59 +11:00