3 Replies Latest reply on May 16, 2018 5:07 AM by abhinavg_21

    FX3 IN AND OUT ENPOINTS

    gean_3054931
    gean_3054931 Apr 27, 2018 5:09 AM

      Hi,

      i am recieving data from p port to u port in the endpoint 0x81,while recieving this data through this dma channel,i am not able to send any data from u port to p port channel in the control centre through the endpoint 0x01.why?

      both ptou and utop channel will  not work at a time?

      thank you.

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        • 1. Re: FX3 IN AND OUT ENPOINTS
          abhinavg_21
          abhinavg_21 Moderator Apr 30, 2018 8:18 PM (in response to gean_3054931)

          Hi,

           

          Are you streaming continuous data from p port to u port?

          What error you are getting on UART print?

          Also explain your application in brief?

           

          Thanks & Regards

          Abhinav.

          • 2. Re: FX3 IN AND OUT ENPOINTS
            gean_3054931
            gean_3054931 May 1, 2018 10:12 PM (in response to abhinavg_21)

            Hello,

            I am using slavefifo application,i modified control centre for this.

            i am streaming contineous data from p port to u port in the endpoint 0x81,while streaming ,i am sending data  in the control centre endpoint 0x01 that is u port to p port channel.if i send this from u to p,p to u channel stops means throwing exception?what whould be the reason?

             

             

            regards

            geethanjali

            • 3. Re: FX3 IN AND OUT ENPOINTS
              abhinavg_21
              abhinavg_21 Moderator May 16, 2018 5:07 AM (in response to gean_3054931)

              Hi,

               

              Please check for the A[1:0] lines from FPGA to FX3. You can create two DMA channels for reading and writing but communication between FPGA and FX3 is half duplex. You have to switch Address lines A[1:0], if you want to switch the mode from reading to writing or vice - versa.

               

               

              Thanks & regards

              Abhinav