Removed unnessessary register masks for the implementation we decided
for in spi_2.h
Outcommented tests that are not of interrest for the SPI implementation
in test_runner.c
Imported the function to the spi_2.c file to begine coding. Minor
changes in spi_2.h
Removed the function spi_master_tranceive() because it could not be
optimized for speed using interrupts. Interrupts will not be
implemented.
Finished a function for setting delay for consecutive transfers
Modified selector definitions to a more appropriate one in spi_2.h
Finished a delay setting function for when the clk-line shall start,
called: spi_selector_set_delay_clk_start() in spi_2.c
Finished the function spi_selector_set_bit_length() in spi_2.c
Commented on spi_selector_keep_cs_active() in spi_2.c. Will be moved to
spi_2.h later.
Commented on functions and moved all comments to spi_2.h.