Comments on SPI modes difference
Parent
Post
"Stream" and "memory mapped" should be defined in the documentation for whatever microcontroller you are using.
"Memory mapped" can mean different things. It might be just a different way of saying DMA, meaning the peripheral gets and puts data directly to memory buffers without code intervention. Another completely different meaning is that external I/O sources and destinations appear in the memory space, as opposed to there being a separate I/O space. Memory mapping versus an I/O space are two different ways of giving code access to particular addresses on external busses.
"Stream" can also mean many things. When used in opposition to "memory mapped", I can only guess that it means something like programmed I/O as opposed to DMA.
Again, the only real answer is in the datasheet for your particular microcontroller.
1 comment thread
2 comment threads