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Throughput of Slave FIFO
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Throughput of Slave FIFO

clh23047 posted on 27 Jun 2012 9:12 AM PST
Top Contributor
65 Forum Posts

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

Re: Throughput of Slave FIFO

RSKV posted on 28 Jun 2012 10:28 PM PST
Cypress Employee
655 Forum Posts

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.

Re: Throughput of Slave FIFO

clh23047 posted on 28 Jun 2012 12:44 AM PST
Top Contributor
65 Forum Posts

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

Re: Throughput of Slave FIFO

RSKV posted on 28 Jun 2012 01:21 AM PST
Cypress Employee
655 Forum Posts

 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. 

Re: Throughput of Slave FIFO

clh23047 posted on 28 Jun 2012 02:08 AM PST
Top Contributor
65 Forum Posts

Thank you very much. It works now.

 

Re: Throughput of Slave FIFO

RSKV posted on 28 Jun 2012 03:47 AM PST
Cypress Employee
655 Forum Posts

Good to hear that. :)



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