USB superspeed peripherals

Hello forum,
I am looking for some clarification concerning the use of bridged external devices such as IMU sensor, capacitive touch sensor, and PWM LED controller peripherals that would be connected via I2C, UART, SPI, or GPIO to the CYUSB3065.

The intended end use is a two in one design, meaning that we want to use a single design/schematic that will ultimately be used for two separate products.
- One product would make use of the MIPI camera along with the above mentioned peripheral sensors and would make full use of USB3.0 provided via 1/2 of a USB type-C w/DP. A re-driver is used to split the Type-C into USB3.0 and DP and since that design only requires 1080p resolution to the display, only two of the four USB channels are required leaving the remaining two for the USB3.0 and the camera interface.
- The second product would not use the MIPI camera portion of the CYUSB3065, but still needs to access the bridge function for communications with the peripheral sensors. This second product requires all four USB channels to be used for the display since it will be 4k resolution and therefore no USB3.0 split will be available to the CYUSB3065 leaving only the USB2.0 for all bridge functions.

My question is, am I correct to assume that we can indeed use the USB2.0 D+/D- lines to handle all communications between the host PC and the peripheral sensors (excluding the camera/image sensor)?

In the long run, at least for us, designing for a single board that can accommodate both products will make much more sense than two separate designs.

I'd also like to ask if there is anyone here that we could contract with to help on the software development side of things concerning EZ-USB and the CYUSB3065 interface, or at least help get us going in the right direction? I hope this question is allowed here, if not I apologize.
I have spent a great deal of time scouring through the documentation and app notes, but several things are still unclear on how to retrieve sensor data from peripherals through the CYUSB3065 and EZ-USB.

Thank you for any help you're willing to lend.
-Dan Gates

Hello,

        I want to send vendor-specific commands from the Control center to the Denebola kit, How to do that?

and In the control center, I found the load script icon, for what it is used? is that one to send vendor commands?

Hi FX3 team,

From the example code in slavefifo_example\slfifosync, the UART in CyFxSlFifoApplnDebugInit (void) in the example code is pointing to CY_U3P_LPP_SOCKET_UART_CONS. meaning the UART message will be send to the physical UART port  in cypress FX3 IC. 

Can i reuse back the same code with minor change on :

• From the example : CyU3PDebugInit (CY_U3P_LPP_SOCKET_UART_CONS, 😎
• My changes              : CyU3PDebugInit (CY_FX_EP_CONSUMER_CDC_SOCKET, 8), this is assuming that the USB serial com port is already make available in windows device manager.

and direct the UART message via USB to the host-PC and read it with teraterm terminal? 

the example code i am refering to with the minor change is as in the picture attached.minor change in line 40

Hi I am using FX3 USB superspeed hardware. I am trying to do file transfer from Master to Slave using cyusb_linux application. I have downloaded the latest application from your website. My OS is Ubuntu. I am getting the below errors LIBUSB_ERROR_TIMEOUT ,  LIBUSB_ERROR_OTHER and unable to clear halt data pipe. I want to transfer bulk files from master to slave. Kindly help me out in this. I have attached the screen shot. Thanks in advance.

I'm trying to run FX3 for compliance testing. But It can't enter test mode. Are there any conditions to enter test mode?

Also, is there a way to tell if FX3 has entered test mode?

Thanks,
Tetsuo

Is it possible to change DMA configuration while running and restart DMA?

Below is a source that runs in 2-socket GPIF mode and runs fine.

and I want to stop GPIF and run it in loopback mode .

but it stop running.
The red source seems to be wrong.
Please give me guide line. Thank you.

dmaCfg.size = (usbSpeed == CY_U3P_SUPER_SPEED) ?(size * CY_FX_EP_BURST_LENGTH ) : (size);

dmaCfg.count = 4;
dmaCfg.validSckCount = 2;
dmaCfg.dmaMode = CY_U3P_DMA_MODE_BYTE;
dmaCfg.cb = NULL;
dmaCfg.notification = 0;

dmaCfg.prodSckId[0] = CY_U3P_PIB_SOCKET_0;
dmaCfg.prodSckId[1] = CY_U3P_PIB_SOCKET_1;
dmaCfg.consSckId[0] = CY_FX_EP_CONSUMER_SOCKET;

apiRetStatus = CyU3PDmaMultiChannelCreate (&glChHandleBulkSrc, CY_U3P_DMA_TYPE_AUTO_MANY_TO_ONE, &dmaCfg);
apiRetStatus = CyU3PDmaChannelSetXfer (&glChHandleBulkSrc, CY_FX_BULKSRCSINK_DMA_TX_SIZE);

( Runnig Well)

(change to loop back mode)

dmaCfg.prodSckId[0] = CY_U3P_CPU_SOCKET_PROD;
dmaCfg.prodSckId[1] = CY_U3P_CPU_SOCKET_PROD;// duplicate ?
dmaCfg.consSckId[0] = CY_FX_EP_CONSUMER_SOCKET;

dmaCfg.cb = CyFxBulkSrcSinkDmaCallback;
dmaCfg.notification = CY_U3P_DMA_CB_CONS_EVENT;

CyU3PGpifDisable(CyTrue);
CyU3PDmaMultiChannelAbort(&glChHandleBulkSrc);

apiRetStatus = CyU3PDmaMultiChannelCreate (&glChHandleBulkSrc, CY_U3P_DMA_TYPE_AUTO_MANY_TO_ONE, &dmaCfg);
apiRetStatus = CyU3PDmaChannelSetXfer (&glChHandleBulkSrc, CY_FX_BULKSRCSINK_DMA_TX_SIZE);

( running is stop)

Hello all, 

Most of the data I'm trying to transmit seems to be going between the FX3 and the other chip just fine, but I'm periodically getting zero length packets seemingly coming from nowhere. I've been trying to debug this, but everything I've tried has been a dead end so far.

I'm trying to use the FX3 to connect an 8051 on our board with a host application on a windows PC. My setup is as follows:

• An 8051 that has the microcontroller business logic. 
  • It receives input from the host from GPIF-II addresses 1 (buffered) and 2 (immediate), sends responses on 3, and there's logging macros that use address 4.
  • It's mostly legacy code, except what I've changed to make it work with the FX3.
• The FX3 that's mainly passing data between the host and the 8051
  • I'm using the GPIF-II interface. The state machine I'm using is basically the async slave fifo interface provided as a sample, except that I've changed some of the pin numbers.
  • USB addresses 2, 4, 6, and 8 are connected to GPIF-II addresses 1, 2, 3, and 4 respectively.
  • I have an additional USB endpoint 10 that I'm using for debugging. Every time data a packet is added to one of the other buffers, I sent the contents and a little metadata to the host. This way, I can debug problems between the FX3 and the 8051 independent of the production app running on the host.
• On the Windows Host PC, I have the production app that's trying to use endpoints 2, 4, 6, and 8 to talk to the 8051. There's some other issues there that I still need to investigate, but it's at least able to consume data from the buffer so they never get too full.
• Also on the windows PC, there's a logger app that connects to endpoint 10, and formats and prints the packets that the FX3 has received from the 8051.

Now the problem I'm seeing is that, the 8051 sends a keepalive signal periodically to the host app, and every once in a while, we get a zero length packet as well.

Here's what I've tried in my investigation:

• I've set breakpoints in the 8051 code to check if the actual data we tell it to send really is zero, and it never gets triggered, so I can be sure that we don't ever try to send a ZLP. I've verified that the pins I'm using to communicate with the 8051 are only touched in the 4 read and write functions that I expect them to, so the breakpoints I mentioned should cover every situation.
• I've verified that the order in which the pins change to control the state machine is correct. That is to say to write to the buffer:
  1. SLWR = 0
  2. Write Data
  3. if this is not the last byte, SLWR=1 and go back to 1.
  4. If this is the last byte:
  5. PKTEND = 0
  6. SLWR = 1
  7. PKTEND = 1
• My coworker who designed the board suggested that timing issues could mean the state machine is in a different state than I thought it was, so I've done the following to check timing:
  • In the FX3 manual, it says the GPIF-II "Enables interface frequencies up to 100 MHz", which I assume means that it can change state at least once every 10ns. In the state machine, changing a single pin causes at most 3 state changes before it reaches a stable state, so I tried adding a 30ns delay after every time we change a pin. Then when that didn't make a difference, I added another 30ns just in case, but still no dice.
  • Then I tried adding a full 1ms delay for good measure after every time I changed a pin, which changed nothing either. I figured this would cover my bases if I was mistaken about how fast the state machine transitions.

I suspected that maybe there's noise or something changing the PKTEND pin long enough to trick the state machine into sending a ZLP, but my coworker has already dismissed that notion. He's the hardware guy, so I can't really make him check it, and he didn't leave a way to attach a scope or anything to the pin, so wouldn't be easy.

If anyone has any suggestions of what might be going wrong, or ideas for other things I could test, I'd love to hear them.

Hi All, 

I am using a custom board where Fx3 USB controller is connected to Xilinx FPGA.
I am trying to create an board level Vhdl/Verilog test bench where Fpga is instantiated as DUT component and
FX3 as a test peripheral component.

Is there any VHDL/Verilog simulation model available for Fx3 USB Controller?

Thanks in advance,

Panneer Raja Vajravelu.