5 Replies Latest reply on Jun 28, 2012 5:47 AM by ramav_01

    Throughput of Slave FIFO

    user_212046894
    user_212046894 Aug 18, 2017 4:00 PM

      Hello, I have large amount of data to be transferred from FPGA to FX3 and then to PC (one direction). At present, our FPGA system is still in design. I plan to connect the related GPIF pins to GND or VCC to test the SlaveFifoAsync example. Then how could I check the throughput of the data transfer in this case (I did it in the USBBulkSourceSink example with Streamer)?

         
          Thanks,   
         
          Lehua Chen   
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        • 1. Re: Throughput of Slave FIFO
          ramav_01
          ramav_01 Jun 28, 2012 12:28 AM (in response to user_212046894)

          Have you tried with the same streamer application.

             

          You can use the same application for measuring the throughput in this scenario as well.

             

          Please make sure that VID and PID of SlaveFifoAsync example code is listed in the cyusb3.inf.

             

          Regards,

             

          sai krishna.

          • 2. Re: Throughput of Slave FIFO
            user_212046894
            user_212046894 Jun 28, 2012 2:44 AM (in response to user_212046894)

            Hi, RSKV,

               
                Thank you for your reply.   
               
                I have put the VID and PID of SlaveFifoAsync in the list of cyusb3.inf.   
               
                    
               
                %VID_04B4&PID_00F0.DeviceDesc%=CyUsb3, USB\VID_04B4&PID_00F0   
               
                %VID_04B4&PID_00F1.DeviceDesc%=CyUsb3, USB\VID_04B4&PID_00F1   
               
                 %VID_04B4&PID_00F2.DeviceDesc%=CyUsb3, USB\VID_04B4&PID_00F2   
               
                %VID_04B4&PID_00F3.DeviceDesc%=CyUsb3, USB\VID_04B4&PID_00F3   
               
                %VID_04B4&PID_4720.DeviceDesc%=CyUsb3, USB\VID_04B4&PID_4720   
               
                    
               
                With this setting, I can only check the USBBulkloop examples with Bulkloop and USBBulkSourceSink and USBIsoSourceSink with Streamer. For SlaveFifoAsync, both Bulkloop and Streamer have no response. In the USB Control Center, I can download the SlaveFifoAsync.img to the RAM of FX3 and the bulk out transfer successes, as shown in the attachment. The bulk in transfer fails, the reason may be that the GPIF interface pins are floating. So I think the VID and PID settings are OK.   
               
                    
               
                How could I activate the Streamer with the SlaveFifoAsync example?   
               
                    
               
                Thank you,   
               
                Lehua Chen   
            • 3. Re: Throughput of Slave FIFO
              ramav_01
              ramav_01 Jun 28, 2012 3:21 AM (in response to user_212046894)

               OK. I have gone through the Streamer application soruce code.

                 

              Basically it is looking for the devices with PID F1.

                 

              So, please change the PID value of SlaveFifoAsync example to F1. (You can go to cyfxslfifousbdscr.c file and change the PID value to F1).

                 

              Then streamer application will identify your device without any issues.

                 

              Please let me know if not.

                 

              Regards,

                 

              sai krishna. 

              • 4. Re: Throughput of Slave FIFO
                user_212046894
                user_212046894 Jun 28, 2012 4:08 AM (in response to user_212046894)

                Thank you very much. It works now.

                • 5. Re: Throughput of Slave FIFO
                  ramav_01
                  ramav_01 Jun 28, 2012 5:47 AM (in response to user_212046894)

                  Good to hear that. :)