FX3 Slave Fifo Interface, have problems to transfer few bytes when trying loopback example | Cypress Semiconductor
FX3 Slave Fifo Interface, have problems to transfer few bytes when trying loopback example
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?