PaulStoffregen/SPI — pull request #1 by crteensy (2014-08-23 22:01:18+00:00)
Title: Update SPI.h

I need to change SPI settings in the DmaSpi library. As all data is private to SPISettings, I propose an extra method in SPIClass for that purpose (which is a friend of SPISettings and thus can access the internals).

The DmaSpi handles one or more slaves between a single pair of beginTransaction() and endTransaction() calls, by letting a chip select class handle the cs signal and apply SPI settings.