sd card DMA
Having the cpu run in a loop to read values from the SD card takes a long time. Adding a DMA engine will allow the sd card to read all 512 bytes of a sector at once, instead of one at a time.
Having the cpu run in a loop to read values from the SD card takes a long time. Adding a DMA engine will allow the sd card to read all 512 bytes of a sector at once, instead of one at a time.