3 Replies Latest reply on Nov 24, 2011 2:35 AM by gautam.das.g

    SPI to control register data transfer using DMA

    pasquale.de.sando


      Could I use DMA for read a 16 bit data from a master SPI and transfer the data on two 8 bit control registers?
      Since the SPI works at very low frequency (1MHz), I need to update both registers only at the end of the reading procedure.
      It is enough only one DMA channel or the procedure requires two different transfers ( SPI->RAM, RAM->control register), thus two DMA channels?

         

      Thanks in advance