USB superspeed peripherals Forum Discussions

I am using CYUSB3KIT-003 and the CYUSB3ACC-005 to work with Xilinx ZC702 to stream video into PC. 

I realize the FPGA serves as a master role in the GPIF port. 

I am reading the AN65974 but how does the GPIF communicate to the FPGA how many bytes the PC has or wants? 

How do the control packets get into the FPGA? 

I have the EZ-USB FX3 DVK. I am trying to debug it using the Cypress EZ USB Suite, and an Olimex ARM-USB-OCD-H.

I followed the instructions in the EZ-USB Suite Users Guide for using OpenOCD to debug. When ever I try to debug in the IDE I recieve the following error:

Open On-Chip Debugger 0.8.0 (2014-12-03-15:43)
Licensed under GNU GPL v2
For bug reports, read
    http://openocd.sourceforge.net/doc/doxygen/bugs.html
Warn : Adapter driver 'cy7c65215' did not declare which transports it allows; assuming legacy JTAG-only
Info : only one transport option; autoselect 'jtag'
adapter_nsrst_delay: 200
jtag_ntrst_delay: 200
adapter speed: 1000 kHz
trst_and_srst srst_pulls_trst srst_gates_jtag trst_push_pull srst_open_drain connect_deassert_srst
RCLK - adaptive
adapter speed: 1000 kHz
Error: CyJtagDevice Not found

in procedure 'init'

This is followed by:

Quit (expect signal SIGINT when the program is resumed)
Quit (expect signal SIGINT when the program is resumed)
Quit (expect signal SIGINT when the program is resumed)
Exception condition detected on fd 0
error detected on stdin

I've tried using a different config file, which I found on this site, and using the Olimex supplied openocd.exe, but nothing seems to work.

Can anyone help me out with this? I'm running out of ideas.

Hi.

I ran across as below code to control i2c with Omnivision sensor(The device slave addresses are 0x78 for write and 0x79 for read.).

/* Functions for OmniVision Chips */
void sccb_read_reg(uint8_t reg, uint8_t *data)
{
    CyU3PReturnStatus_t apiRetStatus;
    CyU3PI2cPreamble_t preamble;
    preamble.buffer[0] = 0x60;
    preamble.buffer[1] = reg;
    preamble.buffer[2] = 0x61;
    preamble.length = 3;
    preamble.ctrlMask = 1 << 1;
    apiRetStatus = CyU3PI2cReceiveBytes(&preamble, data, 1, 0);
    if(apiRetStatus != CY_U3P_SUCCESS){
        CyU3PDebugPrint(8, "i2c Receive Failed, Error Code = %d\n\r", apiRetStatus);
    }else{
        CyU3PDebugPrint(8, "i2c Receive Data = %x,%x\n\r", reg, *data);
    }
}

void sccb_write_reg(uint8_t reg, uint8_t *data)
{
    CyU3PReturnStatus_t apiRetStatus;
    CyU3PI2cPreamble_t preamble;
    preamble.buffer[0] = 0x60;
    preamble.buffer[1] = reg;
    preamble.length = 2;
    preamble.ctrlMask = 0 << 2;
    apiRetStatus = CyU3PI2cTransmitBytes(&preamble, data, 1, 0);
    if(apiRetStatus != CY_U3P_SUCCESS){

        CyU3PDebugPrint(8, "i2c Send Failed, Error Code = %d\n\r", apiRetStatus);
    }else{
        CyU3PDebugPrint(8, "i2c Send Data = %x,%x\n\r", reg, *data);
    }
}

Also i found this code envolved in cyu3i2c.c. But I can't found how to implement and use this function.

Because It doesn't work when I used that, There is any response from SCL,SDA lines. can you let me know how to use this function with example?

below is my snippet code.

void sccb_read_reg(uint8_t reg, uint8_t *data)
{
    CyU3PReturnStatus_t apiRetStatus;
    CyU3PI2cPreamble_t preamble;
    preamble.buffer[0] = 0x42;
    preamble.buffer[1] = reg;
    preamble.buffer[2] = 0x43;
    preamble.length = 3;
    preamble.ctrlMask = 1 << 1;
    apiRetStatus = CyU3PI2cReceiveBytes(&preamble, data, 1, 0);
    if(apiRetStatus != CY_U3P_SUCCESS){
        CyU3PDebugPrint(8, "i2c Receive Failed, Error Code = %d\n\r", apiRetStatus);
    }else{
        CyU3PDebugPrint(8, "i2c Receive Data = %x,%x\n\r", reg, *data);
    }
}

void sccb_write_reg(uint8_t reg, uint8_t *data)
{
    CyU3PReturnStatus_t apiRetStatus;
    CyU3PI2cPreamble_t preamble;
    preamble.buffer[0] = 0x42;
    preamble.buffer[1] = reg;
    preamble.length = 2;
    preamble.ctrlMask = 0 << 2;
    apiRetStatus = CyU3PI2cTransmitBytes(&preamble, data, 1, 0);
    if(apiRetStatus != CY_U3P_SUCCESS){

        CyU3PDebugPrint(8, "i2c Send Failed, Error Code = %d\n\r", apiRetStatus);
    }else{
        CyU3PDebugPrint(8, "i2c Send Data = %x,%x\n\r", reg, *data);
    }
}

CyBool_t
CyFxSlFifoApplnUSBSetupCB (
        uint32_t setupdat0,
        uint32_t setupdat1
    )
{
    /* Fast enumeration is used. Only requests addressed to the interface, class,
     * vendor and unknown control requests are received by this function.
     * This application does not support any class or vendor requests. */

    uint8_t  bRequest, bReqType;
    uint8_t  bType, bTarget;
    uint16_t wValue, wIndex, wLength;////
    CyBool_t isHandled = CyFalse;

    ///////
    //uint16_t temp;
    //CyU3PReturnStatus_t status;
        /////

    /* Decode the fields from the setup request. */
    bReqType = (setupdat0 & CY_U3P_USB_REQUEST_TYPE_MASK);
    bType    = (bReqType & CY_U3P_USB_TYPE_MASK);
    bTarget  = (bReqType & CY_U3P_USB_TARGET_MASK);
    bRequest = ((setupdat0 & CY_U3P_USB_REQUEST_MASK) >> CY_U3P_USB_REQUEST_POS);
    wValue   = ((setupdat0 & CY_U3P_USB_VALUE_MASK)   >> CY_U3P_USB_VALUE_POS);
    wIndex   = ((setupdat1 & CY_U3P_USB_INDEX_MASK)   >> CY_U3P_USB_INDEX_POS);
    /////////////
    uint8_t  i2cAddr;
    /////////////
    wLength  = ((setupdat1 & CY_U3P_USB_LENGTH_MASK)  >> CY_U3P_USB_LENGTH_POS);

    CyU3PReturnStatus_t status = CY_U3P_SUCCESS;
/////////////////////
    if (bType == CY_U3P_USB_VENDOR_RQT)
    {
        /* Vendor command is sent by test applications. Start the loop that tries to keep the link
         * in U0.
         */
        gDoLpmDisable = CyTrue;

        switch (bRequest)
        {

........

........

///////////////////////////////////////
            case CY_FX_RQT_I2C_EEPROM_WRITE: //0xBA
            i2cAddr = 0x21 | ((wValue & 0x0007) << 1);
            status  = CyU3PUsbGetEP0Data(wLength, glEp0Buffer, NULL);
            if (status == CY_U3P_SUCCESS)
                {
                CyFxUsbI2cTransfer (wIndex, i2cAddr, wLength,
                glEp0Buffer, CyFalse);
                }
                break;

            case CY_FX_RQT_I2C_EEPROM_READ: //0xBB

                sccb_read_reg((uint8_t)wValue,  glEp0Buffer);

I'm not sure what am I wrong. I just received error message "i2c Receive Failed, Error Code = 68 ". what am I supposed to do for solving this problem?

And I have another question. basically Omnivision address register size consisted with 1 word size not 1 byte such as 0x3000..0x4301...,.. So i'd like to control with word size. what am I supposed to make a handle this?

Thanks for in advanced.

Hi there,

We are currently using the FX3 reference design and like it very much as a device.

Another product of ours calls for a hub functionality, so that means we should use the HX3 for that (are there other Cypress options?).

We would like to modify the firmware on the HX3 so that we can:

1. change the routing of packets:

    a. e.g. a packet destined to port 1, send it to port 3 instead,

    b. dump packets, based on their contents (e.g. packets sent from a device to our "hub").

2. report device connect/disconnect (on the status change endpoint).

Is it possible to do that with the HX3?

What SDK do I use for that?

BTW: I understand there are 16KB RAM on the HX3 boards. It does not include the USB buffers, right?

If so, how big are the HW buffers on those reference boards?

Thanks,

  I used the cyusb3014 communication with FPGA(V-series of Xilinx) and there is no problems. But, now I use the chip of XILINX(K-series) to transfer data with PC,there is some problems. When I connect the USB data line with PC, there is the drive(named Cypress USB Bootloader) . After I download the bit file of my project ,the drive(named Cypress USB Bootloader) is dropped, not become the Cypress USB SreammerExample.  

 I don't know why!

 Surely it doesn't mean that because the K-series of XILINX? I don't think so . But why?

    Does anyone ever meet this issue ?Is there any explanation to that ?

    Thanks for any returns

Hi,Sir!

I want to output PWM signal to drive LED brightness, which gpio can be used as PWM output and how to initialize the pwm registers?

Where can I download the detailed specification about GPIO,timer,PWM, intterrupt.

David