Dear Sir,
I designed a custom board with CY3014+FPGA for slavefifo stream-out function for printer purpose.
The config are : GPIF interface external PCLK 48Mhz,32bits,slave fifo out.
While testing,all works OK but sometimes my PC side application(C) showed a problem of transfer failed,err code =997 and could not send data anymore,once close program and re-run ,and it could send again.Unstable.
I verified it by download USBBulkLoopAuto.img to cy3014 , and tested by Bulk Loop.exe for loopback test , no problem .like pictures attached.(sorry,I found I have no permission to upload images yet).
So,means PC->driver->usb 3.0 cable ->CY3014 chip loop back are all normal.
Then,I switched back to my slavefifo.img and run Cypress Streamer.
At first,it worked fine,however, some minutes later, the receiving is stopped and the error message is "Xfer request rejected. NTSTATUS = c0000001".
The interface between CY3014 and FPGA are simple :
32bits data(could be ignored here before problem cleared).2 bits address.
/CS and /OE are GND.
PCLK= supplied by FPGA 48Mhz.
My side,only control /RD ,depend on FX3 /empty signal.
No matter controlled /RD signal,or simply treated /RD=!/EMPTY , all have problem as above red text.
One more clue,before I click steamer START,I select end point and it showed"BULK OUT,16384 bytes,15 maxburst"
Once problem occurred, the end point change back to default "IN...".
Any idea will be appreciated.
Thanks.
BR
Steven
