USB low-full-high speed peripherals Forum Discussions

Hello!

I want to implement UVC using FX3 (trying on SuperSpeed Kit). There is no problem with UVC examples from SDK, but I have no luck to modify USBVideoClass example to work with uncompressed frames. I've downloaded specs from USB.org - USB Device Class Specifications and changed format and frame descriptors as described. I've also changed Probe and Commit control structs.

Is there any example of FRAME_UNCOMPRESSED video translation?

v4l2-ctl output:

v4l2-ctl --all -d0 Driver Info (not using libv4l2): Driver name   : uvcvideo Card type     : FX3 Bus info      : usb-0000:00:14.0-5 Driver version: 4.15.18 Capabilities  : 0x84200001 Video Capture Streaming Extended Pix Format Device Capabilities Device Caps   : 0x04200001 Video Capture Streaming Extended Pix Format Priority: 2 Video input : 0 (Camera 1: ok) Format Video Capture: Width/Height      : 32/24 Pixel Format      : 'BGR3' Field             : None Bytes per Line    : 96 Size Image        : 2304 Colorspace        : Default Transfer Function : Default (maps to Rec. 709) YCbCr/HSV Encoding: Default (maps to ITU-R 601) Quantization      : Default (maps to Full Range) Flags             : Crop Capability Video Capture: Bounds      : Left 0, Top 0, Width 32, Height 24 Default     : Left 0, Top 0, Width 32, Height 24 Pixel Aspect: 1/1 Selection: crop_default, Left 0, Top 0, Width 32, Height 24 Selection: crop_bounds, Left 0, Top 0, Width 32, Height 24 Streaming Parameters Video Capture: Capabilities     : timeperframe Frames per second: 25.000 (25/1) Read buffers     : 0

I'm using guvcview utility to check results. And here is the log:

... V4L2_CORE: (get_v4l2_frame) video stream must be started first V4L2_CORE: (get_v4l2_frame) video stream must be started first V4L2_CORE: (get_v4l2_frame) video stream must be started first V4L2_CORE: (get_v4l2_frame) video stream must be started first ...

lsusb output:

Bus 001 Device 047: ID 04b4:4722 Cypress Semiconductor Corp. Device Descriptor:   bLength                18   bDescriptorType         1   bcdUSB               2.10   bDeviceClass          239 Miscellaneous Device   bDeviceSubClass         2 ?   bDeviceProtocol         1 Interface Association   bMaxPacketSize0        64   idVendor           0x04b4 Cypress Semiconductor Corp.   idProduct          0x4722   bcdDevice            0.00   iManufacturer           1 Cypress   iProduct                2 FX3   iSerial                 0   bNumConfigurations      1   Configuration Descriptor:     bLength                 9     bDescriptorType         2     wTotalLength          198     bNumInterfaces          2     bConfigurationValue     1     iConfiguration          0     bmAttributes         0x80       (Bus Powered)     MaxPower              400mA     Interface Association:       bLength                 8       bDescriptorType        11       bFirstInterface         0       bInterfaceCount         2       bFunctionClass         14 Video       bFunctionSubClass       3 Video Interface Collection       bFunctionProtocol       0       iFunction               0     Interface Descriptor:       bLength                 9       bDescriptorType         4       bInterfaceNumber        0       bAlternateSetting       0       bNumEndpoints           1       bInterfaceClass        14 Video       bInterfaceSubClass      1 Video Control       bInterfaceProtocol      0       iInterface              0       VideoControl Interface Descriptor:         bLength                13         bDescriptorType        36         bDescriptorSubtype      1 (HEADER)         bcdUVC               1.00         wTotalLength           80         dwClockFrequency       48.000000MHz         bInCollection           1         baInterfaceNr( 0)       1       VideoControl Interface Descriptor:         bLength                18         bDescriptorType        36         bDescriptorSubtype      2 (INPUT_TERMINAL)         bTerminalID             1         wTerminalType      0x0201 Camera Sensor         bAssocTerminal          0         iTerminal               0         wObjectiveFocalLengthMin      0         wObjectiveFocalLengthMax      0         wOcularFocalLength            0         bControlSize                  3         bmControls           0x00000000       VideoControl Interface Descriptor:         bLength                12         bDescriptorType        36         bDescriptorSubtype      5 (PROCESSING_UNIT)       Warning: Descriptor too short         bUnitID                 2         bSourceID               1         wMaxMultiplier      16384         bControlSize            3         bmControls     0x00000000         iProcessing             0         bmVideoStandards     0x1c           PAL - 625/50           SECAM - 625/50           NTSC - 625/50       VideoControl Interface Descriptor:         bLength                28         bDescriptorType        36         bDescriptorSubtype      6 (EXTENSION_UNIT)         bUnitID                 3         guidExtensionCode         {ffffffff-ffff-ffff-ffff-ffffffffffff}         bNumControl             0         bNrPins                 1         baSourceID( 0)          2         bControlSize            3         bmControls( 0)       0x00         bmControls( 1)       0x00         bmControls( 2)       0x00         iExtension              0       VideoControl Interface Descriptor:         bLength                 9         bDescriptorType        36         bDescriptorSubtype      3 (OUTPUT_TERMINAL)         bTerminalID             4         wTerminalType      0x0101 USB Streaming         bAssocTerminal          0         bSourceID               3         iTerminal               0       Endpoint Descriptor:         bLength                 7         bDescriptorType         5         bEndpointAddress     0x82  EP 2 IN         bmAttributes            3           Transfer Type            Interrupt           Synch Type               None           Usage Type               Data         wMaxPacketSize     0x0040  1x 64 bytes         bInterval               8     Interface Descriptor:       bLength                 9       bDescriptorType         4       bInterfaceNumber        1       bAlternateSetting       0       bNumEndpoints           0       bInterfaceClass        14 Video       bInterfaceSubClass      2 Video Streaming       bInterfaceProtocol      0       iInterface              0       VideoStreaming Interface Descriptor:         bLength                            14         bDescriptorType                    36         bDescriptorSubtype                  1 (INPUT_HEADER)         bNumFormats                         1         wTotalLength                       71         bEndPointAddress                  131         bmInfo                              0         bTerminalLink                       4         bStillCaptureMethod                 1         bTriggerSupport                     1         bTriggerUsage                       0         bControlSize                        1         bmaControls( 0)                    27       VideoStreaming Interface Descriptor:         bLength                            27         bDescriptorType                    36         bDescriptorSubtype                  4 (FORMAT_UNCOMPRESSED)         bFormatIndex                        1         bNumFrameDescriptors                1         guidFormat                            {7deb36e4-4f52-ce11-9f53-0020af0ba770}         bBitsPerPixel                      24         bDefaultFrameIndex                  1         bAspectRatioX                       0         bAspectRatioY                       0         bmInterlaceFlags                 0x00           Interlaced stream or variable: No           Fields per frame: 2 fields           Field 1 first: No           Field pattern: Field 1 only           bCopyProtect                      0       VideoStreaming Interface Descriptor:         bLength                            30         bDescriptorType                    36         bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)         bFrameIndex                         1         bmCapabilities                   0x00           Still image unsupported         wWidth                             32         wHeight                            24         dwMinBitRate                   460800         dwMaxBitRate                   921600         dwMaxVideoFrameBufferSize        2304         dwDefaultFrameInterval         400000         bFrameIntervalType                  1         dwFrameInterval( 0)            400000 Binary Object Store Descriptor:   bLength                 5   bDescriptorType        15   wTotalLength           22   bNumDeviceCaps          2   USB 2.0 Extension Device Capability:     bLength                 7     bDescriptorType        16     bDevCapabilityType      2     bmAttributes   0x00000002       Link Power Management (LPM) Supported   SuperSpeed USB Device Capability:     bLength                10     bDescriptorType        16     bDevCapabilityType      3     bmAttributes         0x00     wSpeedsSupported   0x000e       Device can operate at Full Speed (12Mbps)       Device can operate at High Speed (480Mbps)       Device can operate at SuperSpeed (5Gbps)     bFunctionalitySupport   3       Lowest fully-functional device speed is SuperSpeed (5Gbps)     bU1DevExitLat           0 micro seconds     bU2DevExitLat           0 micro seconds Device Status:     0x0000   (Bus Powered)

Dear Technical Support,

as described in the PDF Chapter 3 of the Cypress CyUsb3.sys Programmer's Reference, I would like to start the Driver Resell procedure in order to have a customized driver for my hardware (based on FX2LP Cypress USB) with a dedicated .inf file. in the documentation it is written that I:"need to contact Cypress Technical Support and create a case(https://www.cypress.com/

support) with the below information to initiate the driver resell process.

1. Company details.

2. INF file with your devices VID/PIDs. "

I prepared all this info but which is the right way to contact cypress Techicanl Support and create the "case", is by this community or may I have a direct email contact with a Cypress representative?

When my program calls the CCyUSBDevice::Open function it takes a long time (45s or more).  To anyone using the program it looks like it is frozen and unresponsive.  Eventually all Cypress devices are found and things act normally.

Is there a way to speed this up?

Is there a newer version of the Cypress driver/API that is faster (I am using 3.4.7.0)?

Any help would be appreciated.  Thanks.

Hi All:

I am working on a USB audio device(UAC 2.0) with multichannel input MIC and stereo output speaker,the format 48KHz,16bit.

I have write a project,but it doesn't work.

Do anyone have a similar example code?

Attached is my firmware, can anyone have some suggestion?

Thanks a lot.

Update2018.08.09

1.Two Clock uint descriptors are

;; Clock Source Descriptor

db     0x08                            ;; bLength                          

db     0x24                            ;; bDescriptorType           CS_Interface

db     0x0A                                     ;; bDescriptorSubType             Clock Source

db     0x10                            ;; bClockID  another ID is 0x11

db     0x05                            ;; bmAttributes                           Internal Fixed Clock Locked to SOF 8000Hz

db     0x03                            ;; bmControls

db     0x00                            ;; bAssociatedTerminal

db     0x00                            ;; iClockSource

The format descriptor is

;; FORMAT_TYPE_I descriptor   

db     06H                    ;; bLength

db     DSCR_AS_INTRFC             ;; bDescriptorType CS_INTERFACE

db     02H                    ;; bDescriptorSubType   FORMAT_TYPE

db     01H                    ;; bFormatType         FORMAT_TYPE_I

db     04H                    ;; bSubSlotSize

db     18H                    ;; bBitResolution 24bit

SOF interrupt service function looping the input(EP2)-output(EP6) is 

void ISR_Sof(void) interrupt 0

{

  int i;

  int count;

  IOA|=0x80; //output 1 on PA.7

  SYNCDELAY;

// Transfer EP6-OUT buffer to EP2-IN buffer when there is a packet in one of the EP6-OUT buffers, AND

// there is an available EP2-IN buffer. The FIFO status flags update after full packets are transferred.

// Therefore EP2-OUT "Not Empty" means a packet is available, and "EP6-IN "Not Full" means there is an

// available buffer. Using the flags this way handles any packet size and takes multiple buffering

// into account.

if(!(EP2468STAT & bmEP2EMPTY))           // Is EP2-OUT buffer not empty (has at least one packet)?

{

           if(!(EP2468STAT & bmEP6FULL))      // YES: Is EP6-IN buffer not full (room for at least 1 pkt)?

             {

APTR1H = MSB( &EP2FIFOBUF );

        APTR1L = LSB( &EP2FIFOBUF );

AUTOPTRH2 = MSB( &EP6FIFOBUF );

AUTOPTRL2 = LSB( &EP6FIFOBUF );

        count = (EP2BCH << 😎 + EP2BCL;

        // loop EP2OUT buffer data to EP6IN

        for( i = 0; i < 0x0200; i++ )

        {

            EXTAUTODAT2 = EXTAUTODAT1;      // Autopointers make block transfers easy...

        }

EP6BCH = 0x02;                  // Send the same number of bytes as received

SYNCDELAY; 

EP6BCL = 0x00;        // arm EP6IN

                             SYNCDELAY;                    //

                             EP2BCH = 0x02;    

                             SYNCDELAY;                    //

                             EP2BCL = 0x00;                // arm EP2OUT by writing byte count w/skip.

                             SYNCDELAY;

                      }

  }

//         for( i = 0; i < 192; i++ )

//    {

// EP6FIFOBUF = i+2;

//    }

// EP6BCH = 0x00;

// SYNCDELAY;                    //

//   EP6BCL = 0xC0;

// SYNCDELAY;

  IOA&=0x7F; //output 0 on PA.7

  SYNCDELAY;

EZUSB_IRQ_CLEAR();

   USBIRQ = bmSOF;            // Clear SOF IRQ

}

Under such conditions the device driver works well, but datas on endpoint(EP6) are not narmal, like log.file1.txt over bus hound

2、After I modified the SOF interrupt service function like below

void ISR_Sof(void) interrupt 0

{

  int i;

  int count;

  IOA|=0x80; //output 1 on PA.7

  SYNCDELAY;

// Transfer EP6-OUT buffer to EP2-IN buffer when there is a packet in one of the EP6-OUT buffers, AND

// there is an available EP2-IN buffer. The FIFO status flags update after full packets are transferred.

// Therefore EP2-OUT "Not Empty" means a packet is available, and "EP6-IN "Not Full" means there is an

// available buffer. Using the flags this way handles any packet size and takes multiple buffering

// into account.

//       if(!(EP2468STAT & bmEP2EMPTY))           // Is EP2-OUT buffer not empty (has at least one packet)?

//       {

//                 if(!(EP2468STAT & bmEP6FULL))      // YES: Is EP6-IN buffer not full (room for at least 1 pkt)?

//          {

// APTR1H = MSB( &EP2FIFOBUF );

// APTR1L = LSB( &EP2FIFOBUF );

// AUTOPTRH2 = MSB( &EP6FIFOBUF );

// AUTOPTRL2 = LSB( &EP6FIFOBUF );

// count = (EP2BCH << 😎 + EP2BCL;

//        // loop EP2OUT buffer data to EP6IN

// for( i = 0; i < 0x0200; i++ )

//        {

// EXTAUTODAT2 = EXTAUTODAT1;  // Autopointers make block transfers easy...

//        }

// EP6BCH = 0x02;               // Send the same number of bytes as received

// SYNCDELAY;

// EP6BCL = 0x00;        // arm EP6IN

//                                   SYNCDELAY;                    //

//                                   EP2BCH = 0x02;   

//                                   SYNCDELAY;                    //

//                                   EP2BCL = 0x00;                // arm EP2OUT by writing byte count w/skip.

//                                   SYNCDELAY;

//                            }

//  }

//     

   for( i = 0; i < 192; i++ )

    {

EP6FIFOBUF = i+2;

    }

  EP6BCH = 0x00;

SYNCDELAY;                    //

   EP6BCL = 0xC0;

  SYNCDELAY;

  IOA&=0x7F; //output 0 on PA.7

  SYNCDELAY;

EZUSB_IRQ_CLEAR();

   USBIRQ = bmSOF;            // Clear SOF IRQ

}

I got the logfile2.txt

3、If I modify the Format FORMAT_TYPE_I descriptor:

Before:

;; FORMAT_TYPE_I descriptor    

db     06H                    ;; bLength

db     DSCR_AS_INTRFC             ;; bDescriptorType CS_INTERFACE

db     02H                    ;; bDescriptorSubType   FORMAT_TYPE

db     01H                    ;; bFormatType         FORMAT_TYPE_I

db     04H                    ;; bSubSlotSize

db     18H                    ;; bBitResolution

After:

;; FORMAT_TYPE_I descriptor    

db     06H                    ;; bLength

db     DSCR_AS_INTRFC             ;; bDescriptorType CS_INTERFACE

db     02H                    ;; bDescriptorSubType   FORMAT_TYPE

db     01H                    ;; bFormatType         FORMAT_TYPE_I

db     02H                    ;; bSubSlotSize

db     10H                    ;; bBitResolution

Or if I modify Clock Source Des criptor and sampling rate(48KHz)

Before:

;; Clock Source Des criptor

db     0x08                            ;; bLength                          

db     0x24                            ;; bDescriptorType           CS_Interface

db     0x0A                                     ;; bDescriptorSubType             Clock Source

db     0x11                            ;; bClockID

db     0x05                            ;; bmAttributes                           Internal Fixed Clock Locked to SOF

db     0x03                            ;; bmControls

db     0x00                            ;; bAssociatedTerminal

db     0x00                            ;; iClockSource

After:

;; Clock Source Des criptor

db     0x08                            ;; bLength                          

db     0x24                            ;; bDescriptorType           CS_Interface

db     0x0A                                     ;; bDescriptorSubType             Clock Source

db     0x11                            ;; bClockID

db     0x03                            ;; bmAttributes                           Internal programmable Clock

db     0x07                            ;; bmControls

db     0x00                            ;; bAssociatedTerminal

db     0x00                            ;; iClockSource

The device can’t work , and I got the logfile3.txt, logfile4.txt and shortcuts Modify Format.PNG、Modify Format MIC.PNG.

BRs

Shoukuan

srnt​

Hello everyone!

i am trying to transfer data from spartan 6 to pc and vice versa via fx2lp ( cy7c68013a). i want to use slave fifo and i have made fifoadr[1:0]=1, but i dont know how to make ifcfg[1:0]=1. can anyone explain me basic flow of interfacing of fx2 with fpga and how to configure this things?

Hi,

I have a custom device built with a CY7C65211 chip, configured into I2C master mode. This device is controlled by my custom host software using the CyUSBSerial library.

Everything works just fine on Linux and Mac, but compiling the exact same host software on MSVC, I'm not getting a response from the CY7C65211.

The exact problem is in CyI2cWrite() and CyI2CRead() functions. The first time Write() is called, it returns CY_SUCCESS. All subsequent calls return CY_ERROR_REQUEST_FAILED (numeric 6). This error is documented as being returned "if the device type is not I2C", which sounds rather weird in the case. Watching on the I2C pins on a oscilloscope, no data is sent on the line, even when CyI2cWrite() has returned CY_SUCCESS.

These errors occur when I am using the Cypress-provided CyUSBSerial.dll, so I cannot step into the driver to figure out what exactly goes wrong. Despairing, I ported the Linux/Mac libcyusbserial to Windows with libusb/winusb, and with that I am seeing a timeout with the CyI2cWrite() (and nothing on the I2C pins, again). I do not know if this problem is related - but I am seeing the exact same symptoms as with the closed source driver...

Another peculiarity is that with the Cypress-provided .dll, CyLibraryInit() and CyLibraryExit() functions were not available (I was seeing linker errors). Is this intentional or another symptom of the problems I am facing? The API documentation did not mention that these two functions

would be missing from the CyUSBSerial.dll.

Any suggestions would be greatly appreciated. Or failing that, an explanation on what exactly has happened, when CyUSBSerial returns _REQUEST_FAILED error.

thank you in advance,

kalle

Hello!

I am a CYPRESS chip(CY7C68013A) user，and I am developing USB products， and I have few questions below：

1. 1. Can I use CYPRESS's VID in my end products？free or not?
2. 2. Can I use CYPRESS's PID in my end products？free or not?
3. 3. How can I get a VID & PID from CYPRESS?

This is an external  650 OHms resistor according to the documentation. What is this resistor used for in the chip? Could a wrong value lead to USB packet err

Hey all,

I'm working on trying to work on improving the ability of a USB Device to recover after some error on the .NET side of things (timeout, buffer size mismatch when reading, etc). I'd like to be able to completely clear the out/in end points used in a given operation when such an error occurs. From the documentation, it sounds like the abort operation is supposed to do this. However, when I attempt to use this operation from the Cypress Control Panel it doesn't clear out the IN end point, despite "succeeding."

Is my understanding of the abort operation incorrect? Or is there something I need to do so that the abort operation will work properly? If this is not the intention of the abort command, what would be the suggested approach to implementing such a recovery mechanism?

Thanks,
Ryan