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USB Superspeed Peripherals

Contributor

Dear Sir,

I wan to to debug mipi block in CX3 ,for example, those counts error in mipi block, because video disappears occasionally. I enable these two MACRO

/* Uncomment the following line to provide verbose debug logging. */

#define CX3_DEBUG_ENABLED       1

/* Uncomment the following line to run the mipi error thread */

#define CX3_ERROR_THREAD_ENABLE 1

I had seen this mipi-error thread code in other uvc.c(thread create location) , But I cannot find mipi-error thread in my uvc.c , it is generated by eclipse suite.

Can anybody tell me why?

Thanks.

David

The following section is from uvc.c

/* Application define function which creates the threads. */

void

CyFxApplicationDefine (

        void)

{

    void *ptr = NULL;

    uint32_t apiRetStatus = CY_U3P_SUCCESS;

    /* Allocate the memory for the thread and create the thread */

    ptr = CyU3PMemAlloc (UVC_APP_THREAD_STACK);

    if (ptr == NULL)

        goto StartupError;

    apiRetStatus = CyU3PThreadCreate (&uvcAppThread,    /* UVC Thread structure */

            "30:UVC_app_thread",                        /* Thread Id and name */

            CyCx3UvcAppThread_Entry,                    /* UVC Application Thread Entry function */

            0,                                          /* No input parameter to thread */

            ptr,                                        /* Pointer to the allocated thread stack */

            UVC_APP_THREAD_STACK,                       /* UVC Application Thread stack size */

            UVC_APP_THREAD_PRIORITY,                    /* UVC Application Thread priority */

            UVC_APP_THREAD_PRIORITY,                    /* Pre-emption threshold */

            CYU3P_NO_TIME_SLICE,                        /* No time slice for the application thread */

            CYU3P_AUTO_START                            /* Start the Thread immediately */

            );

    /* Check the return code */

    if (apiRetStatus != CY_U3P_SUCCESS)

        goto StartupError;

    /* Create GPIO application event group */   

    if (CyU3PEventCreate(&glCx3Event) != CY_U3P_SUCCESS)

        goto StartupError;

#ifdef STILL_CAPTURE_ENABLE

/* Create GPIO application event group for still image related events */

if (CyU3PEventCreate(&glStillImageEvent) != CY_U3P_SUCCESS)

goto StartupError;

#endif

    return;

StartupError:

    {

        /* Failed to create threads and objects required for the application. This is a fatal error and we cannot

         * continue.

         */

        /* Add custom recovery or debug actions here */

        while(1);

    }

}

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2 Replies
Contributor

Dear SIr,

I add    CyU3PMipicsiGetErrors( CyTrue, &errCnts) in DMA_RESET_EVENT processwhen cb failure occurs ,errCnts = 257, 0x101(hex)

Can anyone tell me what meaning for this value?

David

///////////////////////////////////////////////////////////////////////////////////////////////////////////

if (eventFlag & CX3_DMA_RESET_EVENT)

            {

            if (dma_reset_flag == 0)

            {

CyU3PDebugPrint(4,"\n\rCB failure");

curTime = CyU3PGetTime();

CyU3PDebugPrint(4," @ %d(ms)", curTime);

//continue;

}

else if (dma_reset_flag == 1)

{

CyU3PDebugPrint(4,"\n\rVideo timer");

curTime = CyU3PGetTime();

CyU3PDebugPrint(4," @ %d(ms)", curTime);

}

#ifdef PRINT_FRAME_INFO

TxCount = 0;

RxCount = 0;

#endif

dma_reset_flag = 0;

                /* Frame timed out. Abort and start streaming again. */

                if (glIsApplnActive)

                {

                //read cx3 internal csi2 error status register

                uint32_t errCnts=0;

                static uint32_t i = 0;

               CyU3PMipicsiGetErrors( CyTrue, &errCnts);

                CyU3PDebugPrint (4,"\n\rCyCx3UvcAppThread_Entry:CyU3PMipicsiGetErrors %d,i=%d", errCnts,i);

                i++;

                    CyCx3UvcAppStop();

    CyU3PDebugPrint (4,"\n\rCyCx3UvcAppThread_Entry:CX3_DMA_RESET_EVENT UVC will stop and restart");

    CyCx3UvcAppStart();

                }

               

// if glIsApplnActive is not active, we should not restart UVC application

                // commented out to fix this bug.

                //CyU3PDebugPrint (4,"\n\rCyCx3UvcAppThread_Entry:CX3_DMA_RESET_EVENT UVC will stop and restart");

//CyCx3UvcAppStart();

#ifdef RESET_TIMER_ENABLE

                CyU3PTimerStop (&UvcTimer);

                CyU3PTimerModify (&UvcTimer, TIMER_PERIOD, 0);

#endif

            }

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Contributor

Dear SIr,

When CB failure occurs again(the second time) ,errCnts = 514,0x0202(hex).

I know the internal mipi block is same as toshiba TC358746, there are several error status registers, what is the relationship betwwen errCnts and these error status registers?

pastedImage_2.png

pastedImage_1.png

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