1 Reply Latest reply on Dec 23, 2015 3:23 AM by Madhu Lakshmipathy

    FX3 Slave Fifo Interface, have problems to transfer few bytes when trying loopback example

    qinyi.wang

      Hi,

         

      I am new to deal with USB controller. When I followed application notes AN65974 to try loopback example using synchronous slave fifo interface, I found a problem. When I using Control Center to transfer 1024 bytes from PC to FPGA by Transfer File Out, the whole loop worked well. However, if I trying to transfer a few bytes of data (such as 8 bytes) from PC to FPGA, then data cannot be transferred back. The error code is 997. 

         

      I want to know where is the problem? And may I do some modifications on the loopback firmware to allow me to send few bytes to FPGA?

         

       

         

      Regards

         

      Zoe