spi bibliotheken von pi2 in qt
which spi bibliothek doest qt need for raspi2?
and i search datasheet for implementation of spi interface für raspi2
have nice week end
If the Pi2 uses the same chipset as the Pi for the SPI then this page should give you some starting points.
Hope it helps
i only know that
pi get bcm2835 chipset
and pi2 get bcm2836 chipset
Seems that the wiringpi library has been update for the Pi2. See this