I have a shield a screwshield for tft/sd with rtc from aqualedsource.com - rtc and tft and sd works perfectly. SD even on highest speed..
But when I put it all together, I cannot read time from RTC.. It's ds1307, and I am using GitHub - adafruit/RTClib: A fork of Jeelab's fantastic RTC Arduino library as RTC library.
I think wire.h cannot be used together with sdfat library on Due's DMA mode..
Any solutions?