USB superspeed peripherals Forum Discussions

I have discovered in the forum history two examples of UVC with USBUART combined.

I am trying to find the latest version of this example, as it isn't supplied as part of the SDK.

Could you please supply me with the latest copy of this example as I want to use the ov5640 camera via USB and serial data via USB

Regards,

Dave

In our system FX3-CYUSB3014 + SDK 1.3.3 we use the following transfers at the same time:

BULK-OUT: to write data from the PC to the device-TFT-display with DMA
BULK-IN:  to read data from a camera to the PC with DMA
CONTROL-GET: to read cyclical a touchpad on our device

If the connection is USB2.0 we found the following issue:
(analysis with an USB bus analyzer)

    
• The system is running well for a while
    
• suddenly a CONTROL-GET fails with "Turnaround Timeout Error" and "BAD CRC"
    
• The PC makes a second try to read the data and get the data with correct CRC but with the first 4 bytes wrong
    
• After the first occurrence of this error all of the following transfers CONTROL-GET and BULK-IN!!! have 4 wrong bytes at the start of each data record
   

The BULK-OUT to the TFT is further running well
To reset the error we have to restart the complete system

questions:

    
• any idea what happens or how to further investigate the problem?
    
• it seems the error is not in the firmware but in the hardware (USB20-SIE, USB20-TP) because it occurs in CONTROL-GET (firmware) and BULK-IN (hardware-DMA) at the same time in different pipes (EP0 and EP3). Is there a possibility to reset the SIE and/or the TP with out reset the entire system
    
• it is possible to detect by the firmware such a hardware error and how to react correctly. At the moment I send data and do not detect the problem in the firmware, only on the PC side
   

The error was observed until now only with USB2.0 (not USB3.0)  
The error was observed only on some PC's (WIN10)

Thanks for any help

When I download the firmware of slavefifo to CYUSB3014,the USB Control Center show as the high speed.But I have set the connection as super speed.I don't know how to solve it.Can anyone help me?I would be grateful to you.

How do I communicate between FX3 and Host PC in the UVC by using vendor command interface?

Hi. 

I'd like to vendor command command communication between FX3 and Host PC in the UVC. 

When I used the below host application code, the FX3 does not response. 

USBDevice = new CCyUSBDevice(NULL); // Create an instance of CCyUSBDevice 

How do I communicate between FX3 and Host PC in the UVC by using vendor command interface?

Hi all

I updated my PSoC Creator to latest Version 4.0

Open my old Project with an CYPD4225 on it.

Got a message: "Projects with outdated devices".

What should i do?

If I select yes I can choose between 4 CCG4 Controller. But only two with Dual Port.

CYPD4226 and CYPD4236

But I can`t find a Datasheet to this two controllers.

Should i downgrade my PSoC Creator?

Br Oliver

I am working with a FX3 firmware for communication board
which has a FX3 connected to a FPGA via GPIF II, and I have some trouble.

In this system, FX3 relays data from FPGA to USB with DMA. 
Configurations are as following:
1) GPIF II is configured as Slave FIFO mode.
2) DMA type is CY_U3P_DMA_TYPE_AUTO
3) FPGA asserts "EOD" signal when FPGA stops producing data.
GPIF II is configured to "COMMIT" buffer when GPIF II receives "EOD" signal.
4) The number of DMA buffers is 8.
5) FPGA waits to transfer data while "DMA_Ready" signal is not asserted.

My probrem is as following:
1) DMA channel doesn't work after receiving "EOD" signal.
2) PC side only receives data until first "EOD" signal is asserted.
3) CyU3PDmaChannelGetBuffer returns code 0x47 (71) CY_U3P_ERROR_INVALID_SEQUENCE.
4) It seems that DMA transfers from FPGA to DMA buffer are done 8 times - that is number of buffers -  using "EOD" signal 8 times.
 
Is there any setting I have to configure before using "COMMIT" function of GPIF II,
or any procedures FX3 firmware have to do after a buffer is committed?

Any hints are appreceiated. 

------------------------------------------
*This is my code to configure DMA channel:

static void ReceiveDataStream_DMA_Initialize( uint16_t size ){
    CyU3PDmaChannelConfig_t dmaCfg;
    CyU3PReturnStatus_t apiRetStatus = CY_U3P_SUCCESS;

    const int WATERMARK_OFFSET = 4;        
    
    //Create GPIF II to USB channel
    dmaCfg.size = size * 8;                //size is 1024 with USB 3.0
    dmaCfg.count = 8;
    dmaCfg.prodSckId = GPIF2_RX_STREAM_PRODUCER_SOCKET;
    dmaCfg.consSckId = EP_RX_STREAM_CONSUMER_SOCKET;
    dmaCfg.dmaMode = CY_U3P_DMA_MODE_BYTE;
    dmaCfg.notification = 0;
    dmaCfg.cb = NULL;
    dmaCfg.prodHeader = 0;
    dmaCfg.prodFooter = 0;
    dmaCfg.consHeader = 0;
    dmaCfg.prodAvailCount = 0;

     apiRetStatus = CyU3PDmaChannelCreate (&glReceiveDataStream_DMA_Handle,
             CY_U3P_DMA_TYPE_AUTO, &dmaCfg);
     if (apiRetStatus != CY_U3P_SUCCESS)
     {
         ErrorHandler(apiRetStatus);
     }

     apiRetStatus = CyU3PGpifSocketConfigure(
             GPIF2_RX_STREAM_THREAD,        
             GPIF2_RX_STREAM_PRODUCER_SOCKET,
             dmaCfg.size - WATERMARK_OFFSET,
             CyTrue,                        
             2                                
             );
     if (apiRetStatus != CY_U3P_SUCCESS)
     {
         ErrorHandler(apiRetStatus);
     }

     apiRetStatus = CyU3PDmaChannelSetXfer (&glReceiveDataStream_DMA_Handle, 0);
     if (apiRetStatus != CY_U3P_SUCCESS)
     {
         ErrorHandler(apiRetStatus);
     }
     return;
}

I am a student working with the EZ-USB FX3 (CYUSB3KIT-003), and I have never really worked with devices like this before, so I just had a beginner's question about setting it up: how do I go about configuring the PMODE pins for USB Boot? I've seen references to them in several forum posts, and read all I could find in the datasheets about which pins are 1 and 0, etc, but I don't know how you actually access and change them. I noticed two pins on the FX3 board that had PMODE labeled on them, but I tried connecting them with the red headers included in the box and it didn't seem to make a difference when I plugged in the board.

I am basically just trying to figure out how to use this board with little prior experience, and this seems to be a roadblock in getting there.

Any and all help is appreciated!

I have this state machine segment, I use LV to trigger the DMA to DR_DATA onto the parallel data bus. I capture the data using the timing

relationship similar to "cs_n = 0 & we_n = 0"--> "data" of SRAM. 

In the logic analyzer I could see an extra 32-bit of unknown data. What's the latency for me to capture the data?

When I set the data count to 16384 with incr = 4, after pulse the LV for 4096 pulses, the state machine stays at DL_WAIT instead of moving onto DOWNLOAD_DONE via DATA_CNT_HIT. Anything wrong with my state machine? 

Hi,

I am using an A/V source connected to a decoder chip which splits them both. The video output enters FPGA and is buffered as needed for the FX3 GPIF to process it for UVC. This part all works fine. 

However, now I need to also handle the audio and make it a part of the input stream to GPIF. But, I'm confused how to insert audio in the middle of the video stream on the D0 to D31 bit lines (FX3 GPIF input pins) without damaging the video stream and ensuring that the Windows USB Driver on PC (USB Host) is able to read it and play it successfully.

Any insight in this matter would be helpful.

Thanks,

Harshad.

I need to use SPI interface to configure few other devices, So can I use the second UART(which is mot MUXed with SPI)  to connect to PC via a serial port? If so do I have to make any additional configurations in firmware as well as hardware other than the general UART debugger congis in examples.