FPGA SlaveFifo problems | Cypress Semiconductor
FPGA SlaveFifo problems
I use AN65974 to communicate FPGA with USB3014 .
GPIF parameter ：
sync slavefifo 、32bit、flaga is current_thread_dma_ready ,i have a counter about write data number,so i do not use flagb.
buffer size = 16384bytes ,DMA Count = 8(p to u)
I read data from FIFO(fpga),then write data to usb3014 fifo.
But I have some problems ：
1.when i use "USB Control Center " ,click "transfer data-in",i can receive right data without PIB ERROR.
2.But when i use "C++ streamer", click "start",i will see "CYU3P_PIB_ERR_THR0_WR_OVERRUN " in UART GUI.
i want to know why .