USB superspeed peripherals Forum Discussions

Dear Sir,

Can Cypress provide a authorized , stable version for CX3? I download several demo codes from cypress , As0260, Ov5640 and balabala..., and I also create a new project in EZsuite which can generate all necessary .c file automatically, you only need customize sensor init file.

There are so many different source code between them,specifically in USBEventCB(),  although all of them can show image video, but it seems there are more different stability.

Please see one section code from AS0260 code. as same in DEMO code which EZsuite generate.

/* This is the Callback function to handle the USB Events */

static void

CyCx3UvcAppUSBEventCB (

        CyU3PUsbEventType_t evtype,     /* Event type */

        uint16_t            evdata      /* Event data */

        )

{

    uint8_t interface = 0, altSetting = 0;

    switch (evtype)

    {

        case CY_U3P_USB_EVENT_SUSPEND:

            /* Suspend the device with Wake On Bus Activity set */

            glIsStreamingStarted = CyFalse;

            CyU3PEventSet (&glCx3Event, CX3_USB_SUSP_EVENT_FLAG, CYU3P_EVENT_OR);

            break;

        case CY_U3P_USB_EVENT_SETINTF:

            /* Start the video streamer application if the

             * interface requested was 1. If not, stop the

             * streamer. */

            interface = CY_U3P_GET_MSB(evdata);

            altSetting = CY_U3P_GET_LSB(evdata);

            /* Make sure that the endpoint toggles/sequence numbers are cleared. */

            glIsClearFeature = CyTrue;

#if CX3_DEBUG_ENABLED

            CyU3PDebugPrint(4,"\n\rUsbCB: IF = %d, ALT = %d", interface, altSetting);

#endif

            glIsStreamingStarted = CyFalse;

            if ((altSetting == CX3_UVC_STREAM_INTERFACE) && (interface == 1))

            {

                /* Stop the application before re-starting. */

                if (glIsApplnActive)

                {

#if CX3_DEBUG_ENABLED

                    CyU3PDebugPrint (4, "\n\rUsbCB:Call AppStop");

#endif

                    CyCx3UvcAppStop ();

                }

                CyCx3UvcAppStart ();

                break;

            }

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

An other version, CyCx3UvcAppStart () is in the bracket pair, in fact, it is more stable than DEMO code.

                if (glIsApplnActive)

                {

#if CX3_DEBUG_ENABLED

                    CyU3PDebugPrint (4, "\n\rUsbCB:Call AppStop");

#endif

                    CyCx3UvcAppStop ();

                    CyCx3UvcAppStart ();

                }

                break;

            }

I am very confused that which version is more stable. so Can cypress provide an authorized, proven stable version of CX3 platform?

Thanks.

Hello,

According to the FX3s data sheet:

(1) Errata's 2. USB enumeration failure in USBboot mode when FX3S is self-powered

Does this Errata have no effect on EEPROM boot?

(2) Errata's 8. USB data corruption when operating on hosts with poor link quality.

Errata says that it is USB 3.0, but can it be considered as having no effect when used with USB 2.0?

Best Regards,

Naoaki Morimoto

I need to use two USB3014 device  of data acquisition boards  and achieve high-speed data transmission to the PC on both channels. That is to say, the two acquisition circuit boards are connected to two PC USB3.0 interfaces. Two design all use the synchronous Slave FIFO example  between FPGA and FX3 by auto DMA. However, at firstly,the first data transmission is started normally, but once the second channel data transmission is started, and the first channel will be blocked .At the same time, the second channel will also not work . When the transmission of the acquisition procedure of the second channel is stopped or closed, the first acquisition will resume normal acquisition of data. The second USB3014 needs to be powered off and re-download the firmware to return to normal. My two PC acquisition programs use the API functions such as the BeginDataXfor function. the Producer and Consumer EP of the two design case  firmware procedure is all the different EP. At present, I can only achieve one-way data acquisition, and cannot achieve two-way data acquisition channels at the same time.How to realize USB3014 two-channel data acquisition? Thanks for your advice or other technology support.