USB superspeed peripherals Forum Discussions

Hi,

I am developing a custom camera application derived from the UVC example. I don't need to insert the UVC header for my application, so the CPU does not need to be interrupted to modify the Bulk transfer data on DMA commit. I'm trying to get rid of the Callback by using the DMA in AUTO_MANY_TO_ONE. However the host always reports failed Xfers (0 bytes received) unless I alter the data count value(partially corrupted data due to some skipped bytes in between, but at least I get something). I include my DMA Channel and GPIF setup, maybe I'm just doing something stupid or missing something.

<code>

/* Configure the video streaming endpoint. */
    endPointConfig.enable = 1;
    endPointConfig.epType = CY_U3P_USB_EP_BULK;
    endPointConfig.pcktSize = CY_FX_EP_BULK_VIDEO_PKT_SIZE;
    endPointConfig.isoPkts = 1;
    endPointConfig.burstLen = 16;
    endPointConfig.streams = 0;
    apiRetStatus = CyU3PSetEpConfig(CY_FX_EP_BULK_VIDEO, &endPointConfig);

/* Create a DMA Manual channel for sending the video data to the USB host. */
    dmaMultiConfig.size = CY_FX_UVC_STREAM_BUF_SIZE; // 32kB
    dmaMultiConfig.count = CY_FX_UVC_STREAM_BUF_COUNT; // 3
    dmaMultiConfig.validSckCount = 2;
    dmaMultiConfig.prodSckId[0] = (CyU3PDmaSocketId_t) CY_U3P_PIB_SOCKET_0;
    dmaMultiConfig.prodSckId[1] = (CyU3PDmaSocketId_t) CY_U3P_PIB_SOCKET_1;
    dmaMultiConfig.consSckId[0] = (CyU3PDmaSocketId_t) (CY_U3P_UIB_SOCKET_CONS_0
            | CY_FX_EP_VIDEO_CONS_SOCKET);
    dmaMultiConfig.prodAvailCount = 0;

    dmaMultiConfig.prodHeader = 0; /* 12 byte UVC header to be added. */
    dmaMultiConfig.prodFooter = 0;

    /* 4 byte footer to compensate for the 12 byte header. */
    dmaMultiConfig.consHeader = 0;
    dmaMultiConfig.dmaMode = CY_U3P_DMA_MODE_BYTE;
    dmaMultiConfig.notification = CY_U3P_DMA_CB_CONS_EVENT
            | CY_U3P_DMA_CB_PROD_EVENT;
    dmaMultiConfig.cb = CyFxUvcApplnDmaCallback;
    apiRetStatus = CyU3PDmaMultiChannelCreate(&glChHandleUVCStream,
            CY_U3P_DMA_TYPE_AUTO_MANY_TO_ONE, &dmaMultiConfig);

/* Start the state machine from the designated start state. */

    CyU3PGpifInitDataCounter(0, (CY_FX_UVC_BUF_FULL_SIZE / (BUS_WIDTH / 8)-2),
    RELOAD, UP_COUNT, 1);

</code>

Please let me know if I'm doing something horribly wrong, missing something or if you need additional information.

Thanks in advance.

C++ streamer (EPIN bulk) failed with Altera FPGA writer using a FIFO writing at low clock speed <1MHz and 'slavefifosync' as CYUSB firmware

XferData fails after few 1024KB EPIN Xfer due to HOST non-retry after NRDY condition found on USB traces.

NB : XferData runs OK at high clock speed (100MHz)

See doc attached for detailed description with USB traces taken with LECROY Advisor T3

Once CX3 development kit is connected to a USB 2.0 based host. CX3 recognizes a USB 2.0 host but it has only ONE video output format (640x480).  I was trying to add 720p and 1080p formats but all failed.  I wonder if anyone has any advice on getting 1080p or even higher video output working for a USB 2.0 host. Thanks.

Hi,

I have two questions regarding MIPI RESET and XSHUTDOWN signal on CX3 chip as I cannot get any information on this from the product documentation.

1.

How to connect MIPI RESET signal? The datasheet specifies it should be pulled to ground for normal operation. However datasheet also indicates the power up sequence should have MIPI_RESET high along with the RESET pin. The Denobola example has it simply pulled to ground? Is this a problem? Can someone explain what is going on here?

2.

If MIPI_CLK and XSHUTDOWN pins are not used, can they be left floating?

I will appreciate any anwser.

I have installed EZ-USB FX3 SDK v1.3.3 for Windows complete version. I tried build example without any errors. Then I created new project for fx3 and simple main c file:

#include <stdio.h>

int main (void){

printf("hello world");

while(1){}
}
 after build I have seen resut:

19:01:04 **** Incremental Build of configuration Debug for project new_test ****
cs-make all 
'Building target: new_test.elf'
'Invoking: Cross ARM C Linker'
arm-none-eabi-gcc -mcpu=arm926ej-s -marm -mthumb-interwork -O0 -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -Wall  -g3 -T "C:\Program Files (x86)\Cypress\EZ-USB FX3 SDK\1.3\/fw_build/fx3_fw/fx3.ld" -nostartfiles -Xlinker --gc-sections -L"C:\Program Files (x86)\Cypress\EZ-USB FX3 SDK\1.3\/fw_lib/1_3_3/fx3_debug" -L"C:\Program Files (x86)\Cypress\EZ-USB FX3 SDK\1.3\ARM GCC\/lib/gcc/arm-none-eabi/4.8.1" -L"C:\Program Files (x86)\Cypress\EZ-USB FX3 SDK\1.3\ARM GCC\/arm-none-eabi/lib" -Wl,-Map,"new_test.map" -Wl,-d  -Wl,--no-wchar-size-warning -Wl,--entry,CyU3PFirmwareEntry -o "new_test.elf"  ./main.o   -lcyu3lpp -lcyfxapi -lcyu3threadx -lc -lgcc
C:\Program Files (x86)\Cypress\EZ-USB FX3 SDK\1.3\/fw_lib/1_3_3/fx3_debug\libcyfxapi.a(cyu3entry_armcc.o): In function `CyU3PFirmwareEntry':
e:\views\antioch_fx3_build_view_puri\software\products\usb30\sdk\firmware\src\system/cyu3entry_armcc.S:131: undefined reference to `CyU3PToolChainInit'
C:\Program Files (x86)\Cypress\EZ-USB FX3 SDK\1.3\/fw_lib/1_3_3/fx3_debug\libcyfxapi.a(cyu3system.o): In function `CyU3PSysCheckBootState':
cyu3system.c:(i.CyU3PSysCheckBootState+0x68): undefined reference to `CyU3PMemCopy'
c:/program files (x86)/cypress/ez-usb fx3 sdk/1.3/arm gcc/bin/../lib/gcc/arm-none-eabi/4.8.1/../../../../arm-none-eabi/bin/ld.exe: new_test.elf: hidden symbol `CyU3PMemCopy' isn't defined
c:/program files (x86)/cypress/ez-usb fx3 sdk/1.3/arm gcc/bin/../lib/gcc/arm-none-eabi/4.8.1/../../../../arm-none-eabi/bin/ld.exe: final link failed: Bad value
collect2.exe: error: ld returned 1 exit status
cs-make: *** [new_test.elf] Error 1

19:01:04 Build Finished (took 616ms)

Please help correct mistake. 

What should I do when I want to use new image sensor OV10640 + ov490 with CX3?

Can I use the sample code of OV5640 for OV10640 + ov490?

Thanks for help.

Alion

I'm linking the static library CyAPI.lib in a Qt project with the following lines in the .pro file:

<code>
unix|win32: LIBS += -L$$PWD/include/SpaMt/GrayskullMt/Cypress/ -lCyAPI
INCLUDEPATH += $$PWD/include/SpaMt/GrayskullMt/Cypress
DEPENDPATH += $$PWD/include/SpaMt/GrayskullMt/Cypress
PRE_TARGETDEPS += $$PWD/include/SpaMt/GrayskullMt/Cypress/CyAPI.lib
</code>

...and I've included the CyAPI.h header file (in the same directory with the other related headers, CyUSB30_def.h, etc) in the source file of a new class and attempted to use several functions, like this:

<code>
#include <SpaMt/GrayskullMt/Cypress/CyAPI.h>
...
gsDevice = new CCyUSBDevice();
...
if(gsDevice->DeviceCount() > 0)
{
   gsDevice->Open(0);
}
...
CCyUSBEndPoint *ep = gsDevice->EndPointOf(0x03);
</code>

...but I get an "Undefined reference to <function>" error each time I attempt to use any of the functions provided by CyAPI. This makes me think that the static library is not being linked, as I assume that's where all the functions are defined. However I don't see any qmake errors when it reads the .pro file or any compile-time errors related to the linking of the library. What's going on here? Why am I getting these undefined reference errors? Please help!

As a side note, I had to include '#include <Windows.h>' to CyUSB30_def.h to have the various UCHAR, UINT, etc keywords recognized by the compiler. I thought it was strange this was left out, so maybe I'm breaking something here.

Thanks,

Forrest