Posted on May 17, 2011 at 13:07Lowly software type here. I can’t read between the lines on the FSMC control lines.
Will this general method work:
I would like to have my hardware guy build a communications device connected to the FSMC. In use I would setup a DMA read which needs to hang for possibly seconds or minutes until data arrives. Once data arrives the device will acknowledge the data and the DMA read proceeds to the next byte where it waits until the next byte arrives.
Write also uses DMA. The device only accepts bytes as it is able to transmit them.
My desire is to save cost on the interface. If it can be done without internal RAM it will cost less. Save a buck or two on each of a million units and the exercise of a few brain cells pays off nicely.
