USB superspeed peripherals Forum Discussions

Hi,

I am facing an issue in 1.3.4 SDK at High speed, that the issue is if I build my code at 1.3.4 SDK there is a frame drop while opening the UVC control window. In 1.3.1 SDK version I am not facing this issue. As per my knowledge it is due the integration of bulk or ISO endpoint suspend logic in latest SDK version, so I need to disable that logic in SDK. So please guide me to achieve this.

Thanks and Regards,

Vignesh Kumar R.

https://community.cypress.com/t5/USB-Superspeed-Peripherals/CYUSB3013-low-control-read-performance-with-FX3-SDK-library/td-p/197007

//UvcAppDebugPrint(4," %d", WrBuff);
status = CyU3PDmaChannelSendData(&glUibChHandle, (uint8_t*)&WrBuff, CX3_UVC_VC_LEN_VALUE_WORD);
CyU3PDebugPrint(4,"\n\r Send EP0 Data failed------------- = 0x%x", status);
//status = CyU3PUsbSendEP0Data(CX3_UVC_VC_LEN_VALUE_WORD,(uint8_t*)&WrBuff);
if (status != CY_U3P_SUCCESS)
{
CyU3PDebugPrint(4,"\n\r Send EP0 Data failed = 0x%X", status);
}
Replaced CyU3PUsbSendEP0Data to CyU3PDmaChannelSendData as mentioned in the above link.  Used for handling  GET request from host. API returns success but the UVC control gets disabled.

Hi All,

I want an application to display the video coming to Windows UVC driver. We are using CX3 board with sensor sending data in RAW10 format. I understand that UVC supports only YUV format hence we have to send RAW10 as YUV data and in the application it has to be treated as RAW10 and display accordingly. I am wondering if there is any application which can do this or anyone modified any application for this. 

Regards,

Nandan

Hi,

While flashing CX3 NIR USB camera for 30FPS and 1280x720 resolution , I am not getting proper frames.

I have attached the frame screenshot, Image sensor configuration and  Log generated related to the issue:

Please Help with this.

Regards!

Hi,

I used two CYUSB3KIT-003 boards to implement GPIF II Slave/Master FIFO interface. I ran the code provided with AN87216 - Designing a GPIF II Master Interface:
https://www.cypress.com/documentation/application-notes/an87216-designing-gpif-ii-master-interface
I used USB Control Center application to send data from bulk out endpoint of slave and receive data from bulk out endpoint of master.
But I found data transfer failed only if I send 1024 bytes data(for any other data size it seemed okay).

This site has sample code that uses FX3 as the Host (cyfxusbhost). There is a description that the use kit is CYUSB3KIT-001, but is CYUSB3KIT-003 not compatible?

If it is true, which point is NG? Can I use it if I modify the board ?

Thank you,
Tetsuo

We are trying to use Cypress USB FX3 as an interface in our product and we are trying to use our own VID/PID and strings. It is mentioned in your CyUSB3.sys reference document (Attached), that if the CYUSB.inf file is modified the driver will become unsigned. If we just modify the INF file and did not modify the CyUSB3.sys file, is it necessary to follow the Driver Resell process and get it signed from Microsoft? Or can we sign the CAT file with SHA1 & SHA 256 certificates and use the driver?

Document Number: 001-87516 page 13 "System-Level ESD" wording regarding the ESD protection on D+, D-  & GND USB interface lines is not clear.  Is level 3A/4C IEC 61000-4-2 6kV/8kV protection built into the chip or not? If it isn't, then why mention it in these two dot points - seems misleading. 

https://www.cypress.com/documentation/datasheets/cyusb306x-ez-usb-cx3-mipi-csi-2-superspeed-usb-bridge-controller 

Hi, I’ve 2 questions for cyfxuvcdscr.c - CyFxUSBSSConfigDscr[ ]’s “class specific uncompressed VS frame” descriptor in AN75779 example.

Q1: Min/Max bit rate bits/s field is NOT MATCH actual situation

According to the definition in UVC spec:

However, I still don’t understand clearly. Does it means that the max/min range for the total bits per second?

Min/Max bit rate bits/s value: 0x31975000 = 832,000,000bps

1 frame bytes: 1280 * 720 * 2 = 1,843,200

Total bits in 30 frames: 1,843,200 * 8 * 30 = 442,368,000bps

832,000,000bps > 442,368,000bps: So the situation(720p, 2bytes for 1 pixel, 30fps) is still valid?

Q2: Maximum video or still frame size field is NOT MATCH actual situation

According to AN75779:

I found the field is correspond totally in High Speed’s descriptor(480p):

High speed descriptor: 0x00096000 = 614,400

Actual frame size: 640 * 480 * 2 = 614,400

However, in Super Speed descriptor(720p), the value isn’t match…

Super speed descriptor: 0x001FA400 = 2,073,600

Actual frame size: 1280 * 720 * 2 = 1,843,200

2,073,600 > 1,843,200: So the situation is still valid? 

Any help will be highly appreciated!