USB superspeed peripherals Forum Discussions

I am using SPI to read/write register values of 2 sensors. At the same time, I used the same  SPI flash memory for booting image storage and for user data storage. SPI read/write will happen for 2 sensors and flash memory user data. I have 2 questions regarding SPI I meant to use,

1. 3 GPIOs are used to select the 3 SPI devices: 2 sensors and 1 flash memory. will this cause SPI problem at the start up since at default all GPIOs are Power on default low while all 3 SPI devices has SSN low level valid.

2. timing control.  1 sensor has the following read/write timing requirement. The register address length together with the operation indicator totally 10 bit long while the register value is 2-byte long. SCK is 10MHz. Firmware has to be able to reconfigure SPI CyU3PSpiConfig t.wordlen from 10 bit to 16 bit within 0.5 SCK clock cycle, which is 50ns. It is quite hard.  I try to use SPI register mode. But for register mode, every transfer is 8 bits. for the 10 bit, if pack it in left, the 6 padding '0' will be take as part of the register address, while the lower address 6 bits will be considered to be the register value. Such mess will happen to the following register values.  So far, I have not get a success yet.

Thanks in advance.

Hi,

I've successfully configured and tested a SPI DMA producer to pass data from the SPI producer to a USB socket for consumption. That DMA is currently configured like this:

//Configure DMA for real time streaming channel
CyU3PDmaChannelConfig_t dmaConfig;
dmaConfig.size = 1024;
dmaConfig.count = 64;
dmaConfig.prodSckId = CY_U3P_LPP_SOCKET_SPI_PROD;
dmaConfig.consSckId = CY_U3P_UIB_SOCKET_CONS_1;
dmaConfig.dmaMode = CY_U3P_DMA_MODE_BYTE;
//Disable DMA callbacks
dmaConfig.prodHeader     = 0;
dmaConfig.prodFooter     = 0;
dmaConfig.consHeader     = 0;
dmaConfig.notification   = 0;
dmaConfig.cb             = NULL;
dmaConfig.prodAvailCount = 0;
status = CyU3PDmaChannelCreate(&StreamingChannel, CY_U3P_DMA_TYPE_AUTO, &dmaConfig)

With its current configuration, the DMA doesn't transmit anything (except 0x0000) when streaming. Is there a way to set up another DMA that transmits data stored in memory on the CPU while simultaneously transmitting the data acquired during the transaction over USB?

My code can be found in the BurstMode branch of this repository.

Thanks for your help!

Hi All,

Please go through attached snap which is about GPIF-tool based interface definition for FPGA configuration using slave-select-parallel-map.

Now if you look at CLK to GPIO[16] that is nothing but schematic-wise it is common 100MHz clock frequency. It is derived from 100 MHz clk-oscillator and sends 100 MHz to both FPGA and FX3 chip.

Now if you look at FX3 GPIO[27] pin to FPGA CCLK pin which provides clock frequency when FX3 writes FPGA bin file into it.

My worry is that i dont know how this GPIO[27] generated 100 MHz clock frequency ? I went through GPIF design, but no-where found relationship between GPIO[16] and GPIO[27]. Then how it provides 100 MHz clock ? where it is defined or configured to do so ?

Please let me know, it'll be very helpful for me.

Thanks,

Premji

Hi,

i am using the FX3 SuperSpeed Explorer Kit, Windows 7 64 bit, Matlab 2018a.

If i try to connect Matlab to the Board via the CyUSB.dll, it results in error:

System.OverflowException: Arithmetic operation resulted in an overflow.

The code i am running is simple, the second line causes the error:

cyusb_lib = NET.addAssembly('E:\Projekte\Cypress\CyUSB.dll');

devList = CyUSB.USBDeviceList(CyUSB.CyConst.DEVICES_CYUSB);

I read a lot about problems with x64 and the CyUSB.dll, but theres nothing that is working for me.

I use the latest drivers and CyUSB.dll version 3.4.7

I have to add, that the code can run without error in like 1 out of 10-15 trials, but then matlab crashes after i try to run:

myUSBDevice = devList.Item(0);

which is also a known issue to many other users.

Thank you for your help

Sebastian

Down below i post the full error-log from Microsoft .NET Framework popup (why does it only say Win32 all the time, not Win64?):

************** Exception Text **************

System.OverflowException: Arithmetic operation resulted in an overflow.

   at CyUSB.PInvoke.CountDevices(Guid g)

   at CyUSB.USBDevice.get_DeviceCount()

   at CyUSB.USBDeviceList.Add()

   at CyUSB.USBDeviceList.PnP_Event_Handler(IntPtr pnpEvent, IntPtr hRemovedDevice)

   at CyUSB.MsgForm.WndProc(Message& m)

   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

************** Loaded Assemblies **************

mscorlib

    Assembly Version: 4.0.0.0

    Win32 Version: 4.7.3062.0 built by: NET472REL1

    CodeBase: file:///C:/Windows/Microsoft.NET/Framework64/v4.0.30319/mscorlib.dll

----------------------------------------

dotnetcli

    Assembly Version: 1.0.6611.7500

    Win32 Version:

    CodeBase: file:///E:/Programme/Matlab2018/bin/win64/dotnetcli.DLL

----------------------------------------

System

    Assembly Version: 4.0.0.0

    Win32 Version: 4.7.3062.0 built by: NET472REL1

    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System/v4.0_4.0.0.0__b77a5c561934e089/System.dll

----------------------------------------

System.Configuration

    Assembly Version: 4.0.0.0

    Win32 Version: 4.7.3062.0 built by: NET472REL1

    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Configuration/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll

----------------------------------------

System.Xml

    Assembly Version: 4.0.0.0

    Win32 Version: 4.7.3062.0 built by: NET472REL1

    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Xml/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.dll

----------------------------------------

CyUSB

    Assembly Version: 3.4.7.0

    Win32 Version: 3.4.7.0

    CodeBase: file:///E:/Projekte/Cypress/CyUSB.dll

----------------------------------------

System.Windows.Forms

    Assembly Version: 4.0.0.0

    Win32 Version: 4.7.3062.0 built by: NET472REL1

    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Windows.Forms/v4.0_4.0.0.0__b77a5c561934e089/System.Windows.Forms.dll

----------------------------------------

System.Drawing

    Assembly Version: 4.0.0.0

    Win32 Version: 4.7.3062.0 built by: NET472REL1

    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Drawing/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll

----------------------------------------

Accessibility

    Assembly Version: 4.0.0.0

    Win32 Version: 4.7.3062.0 built by: NET472REL1

    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/Accessibility/v4.0_4.0.0.0__b03f5f7f11d50a3a/Accessibility.dll

----------------------------------------

I want to switch FX3 work at USB3.0 mode and not support USB2.0 at the same time, connect to the host that don't support USB3.0, I want to the host wouldn't find FX3 device, because FX3 only work at USB3.0 mode and not support 2.0 at same time,    which function can do it?

Hello

I can't find CYUSB3KIT-003 SuperSpeed Explorer Kit  dimension drawing.

Who can provide CYUSB3KIT-003 dimension drawing or PCB?

Thanks very much.

Thanks.

i'm currently working on a uvc application and I want the device to only work on usb 2.0. It work perfectly fine in usb 2.0 mode but if i force the cx3 to only work in usb 2CyU3PConnectState(CyTrue,CyFalse) the function CyU3PDmaMultiChannelCommitBuffer in the dma callback return 0x47. Do you have any idea why ?