Back then there was a bug in the Teensy 3.0 chip which made the SPI's hardware chip select pins useless for DMA usage. IIRC I read somewhere here that this has changed in newer chips.
Does anyone have an overall picture of the situation? Which hardware SPI features (especially chip select) work with DMA, which don't?
Does anyone have an overall picture of the situation? Which hardware SPI features (especially chip select) work with DMA, which don't?