3 Replies Latest reply on Dec 18, 2013 9:35 AM by EvPa_264126

    Example Project: 16-channel 20-bit Delta Sigma ADC's data buffering w/ PSoC 3 and PSoC 5

      The attached project implements Delta Sigma ADC's output data buffering using the DMA.


      Since the spoke width is of 16-bits for the peripherals like  ADC, we need two independent DMAs to buffer the output data in a memory location. The ADC's input channel selection is done using an Analog Mux whose select lines are driven by a state-machine. Once the current ADC conversion is over, Analog Mux's channel select lines will change to connect the next ADC's channel.


      The attached project works in both PSoC 3 and PSoC 5 as well. Only difference is that PSoC 3 requires endian swapping before transferring the ADC data to memory.