Brad Campbell a96dc90250 [SPI] Make SPI_FLUSH() more versatile
Currently the SPI driver in core/ sets `SPI_FLUSH()` to be a single read
of the spi RX buffer. This is fine for many microcontrollers, but newer
platforms like the CC2538 have a multi-byte FIFO for the RX buffer. In
that case, a single read is not guaranteed to flush the RX. This commit
allows `SPI_FLUSH()` to be platform dependent if needed, but doesn't
change for platforms where it works.
2014-04-15 14:04:42 -04:00
..
2014-04-15 14:04:42 -04:00