USB superspeed peripherals Forum Discussions

Hi

I am trying to grab frames from MIPI - USB3 using econ CX3 RDK attached with a custom sensor. The configuration is as below. 
Using a scope I can verify that the CSI clock speed is 228 MHz and the HSYNC and VSYNC test pin outs also matches the frame rate of 14.615 fps. However in the final output the fps is only around 7.23. I am wondering what I am missing here... 

I implemented the configuration as mentioned here... 

Regards

Athreya

Configuration: RAW10
Frame size: 2624x1992
Hblank: 0
Vblank: 2
CSI clock: 228 MHz
fps: 14.615 (approx)

Output frame rate ~ 7.44 (4029 ms for 30 frames) 

Prod = 283 Cons = 283  Prtl_Sz = 35088 Frm_Cnt = 19 Frm_Sz = 10454016 B

 MIPI errors: 0 0 0 0 0 0 0 0 0

Prod = 283 Cons = 283  Prtl_Sz = 35088 Frm_Cnt = 20 Frm_Sz = 10454016 B

 MIPI errors: 0 0 0 0 0 0 0 0 0

Prod = 283 Cons = 283  Prtl_Sz = 35088 Frm_Cnt = 21 Frm_Sz = 10454016 B

 MIPI errors: 0 0 0 0 0 0 0 0 0

Prod = 283 Cons = 283  Prtl_Sz = 35088 Frm_Cnt = 22 Frm_Sz = 10454016 B

 MIPI errors: 0 0 0 0 0 0 0 0 0

Prod = 283 Cons = 283  Prtl_Sz = 35088 Frm_Cnt = 23 Frm_Sz = 10454016 B

 MIPI errors: 0 0 0 0 0 0 0 0 0

Prod = 283 Cons = 283  Prtl_Sz = 35088 Frm_Cnt = 24 Frm_Sz = 10454016 B

 MIPI errors: 0 0 0 0 0 0 0 0 0

Prod = 283 Cons = 283  Prtl_Sz = 35088 Frm_Cnt = 25 Frm_Sz = 10454016 B

 MIPI errors: 0 0 0 0 0 0 0 0 0

Prod = 283 Cons = 283  Prtl_Sz = 35088 Frm_Cnt = 26 Frm_Sz = 10454016 B

 MIPI errors: 0 0 0 0 0 0 0 0 0

Prod = 283 Cons = 283  Prtl_Sz = 35088 Frm_Cnt = 27 Frm_Sz = 10454016 B

 MIPI errors: 0 0 0 0 0 0 0 0 0

Prod = 283 Cons = 283  Prtl_Sz = 35088 Frm_Cnt = 28 Frm_Sz = 10454016 B

 MIPI errors: 0 0 0 0 0 0 0 0 0

Prod = 283 Cons = 283  Prtl_Sz = 35088 Frm_Cnt = 29 Frm_Sz = 10454016 B

 MIPI errors: 0 0 0 0 0 0 0 0 0

Prod = 283 Cons = 283  Prtl_Sz = 35088 Frm_Cnt = 30 Frm_Sz = 10454016 B

TimeDiff = 4029 ms FPS = 7

 MIPI errors: 0 0 0 0 0 0 0 0 0

Hi community,

I was just wondering if it is possible to access the build variables in the code I'm writing. I didn't find a way so far.

At first, those variables were only used to auto create an image file with the format I wanted. Now, I want to access them from a control transfer sent to the Cypress.

If this is not possible, do you know any other way to do that and satisfy both of my needs?  

Thank you in advance,

Keven

Hello,

I have developed firmware that operates as a USB 2.0 host on FX3.
This firmware provides support for the HU205 UVC webcam as a device.

Now, I aim to enhance the firmware's capabilities to accommodate an additional webcam, specifically the Logitech StreamCam.
However, during testing, I encountered a significant issue with the resulting video quality, as it appeared severely distorted.
Upon analyzing the video stream using the LeCroy USB Analyzer, I noticed that the stream patterns for the two webcams exhibited slight variations, as demonstrated below.

Case 1. webCam(HU205) -> LeCroy USB Analyzer -> FX3(USB2.0 host) :  Video streaming OK

Case 2. webcam(StreamCam) -> LeCroy USB Analyzer -> FX3(USB2.0 host) : Video is broken

There's another device which I developed that can show me the stream that the usb 2.0 host receive. When I saw the video of case 1, it was fine but in case 2,  the video was broken like below.

The diffences that I noticed from Case 1&2 are

• Case 1 (EOH of UVC Header is 1), Case 2 (EOH is 0)
• Case 1 ("No Data" not found), Case 2("No Data" found)

Any comments or suggestions will be highly appreciated

Regards,

Rossi

Hello,

I have two successfully running fx3 firmwares, one of which runs as a usb2.0 host(OTG) and the other as a device.

For the new requirement, I have to combine those two firmwares, one firmware which would act as a usb host when it's connected with a device and when it's connected with a host such as PC, it has to work as device.

I'm not considering role negotiation method used in OTG because I'm combining completely different logics together.

When fx3 is connected, the role(whether it'll work as host or device) is already determined and if it's needed, the role can be informed to the fx3 through the GPIO pin, for example.

I have looked into the firmware examples and try to prove my concept with them. Those are

• 7.1.1 USBBulkLoopAuto (to simulate my device)
• 7.2.12 USBHost (to simulate my host)

I think it's crucial to distinguish fx3 is on which state(to determine whether it should work as host or device) and I assume that this could be done with OTG callback within my understanding. But in my testing so far, I imagined that OTG callback would let me know when the device is connected, but seems like something's wrong.

How can I address this problem?

    /* Initialize the OTG module. */
    otgCfg.otgMode = CY_U3P_OTG_MODE_OTG;
    otgCfg.chargerMode = CY_U3P_OTG_CHARGER_DETECT_ACA_MODE;
    otgCfg.cb = CyFxOtgEventCb;
    status = CyU3POtgStart (&otgCfg);

Regards,

Rossi

Our hardware product is built around the CYUSB3013 chip. To communicate with the device, the PC uses an isochronous endpoint.

When we configure the device in ISO mode with a burst length of 11, the number of ISO packets per interval set to 3, and a polling interval of 125us (resulting in 3*11 Kbytes of data per USB micro-frame), the device performs as expected. However, when we set the burst length to 12, the device responds with 12 Kbytes of data, but the last packet lacks the LPF (End of Burst) set. Does anyone have insights into why this is happening?

Hi,
Now that my USB enumeration is successful, I want to register a control transfer command to switch the usb connection speed freely between USB 2.0 and USB 3.0. What I know so far is using the USBConnectSpeed(connect,connect_speed) API and registering reqcode. What I want to ask is what I need to do before calling the USBConnectSpeed API. If you can give me an example, That's even better.
Thanks.

Dear technical support expert,

I 'm study your KBA237926 article , it says the sensor AR1335 use on board oscillator as input clk.

Can you kindly tell me the oscillator value ?  is it 25MHZ?