TDA4VM: Routing eCap interrupt via the interrupt router

Hi,

Please let me know if the below FAQ answers your question.

(+) [FAQ] TDA4VM: Routing interrupts via the interrupt router - Processors forum - Processors - TI E2E support forums

Regards,

Nikhil

Hi.

i know the FAQ, So, I implemented an ecap handler using that question as a reference, but an error occurred.

The error occurred in the CSL_PASS condition.

1. Why did an error occur? 

Also I have a technical reference manual called "spruill 1c.pdf". 

As shown in the red circle below, ecap0's dst input index is 315~317, but the index of the FAQ link is 316~318.

2. Which of the two is correct?

Hi,

The index mentioned in the FAQ is correct. 
Please find the same in the TRM as shown below 

Regards,

Nikhil

thank you.

I confirm that my TRM is the same.

so, i have try the dst_id, 316. but, The error still occurs.

is there anything else needs to modified?

Hi, Karan

Thank you. That's what I wanted.

I have one more question.

    4. Identify a free MCU3_0 IRQ line in the system. This is an interrupt number which is not registered on the MCU3_0. This becomes your dst_host_irq.

What does this mean?

I have never registered an irq. I need to your guide. also, can I get the guide document? 

Hi, Karan.

I got success with your guide.

thank you.

So I set a ecap callback function using the OSAL API Osal_RegisterInterrupt().

But the callback function doesn't work.(ecap_cnt doesn't increase)

* The Osal_ClearInterrupt() add for interrept initialize.

Hi

Are there no errors from the Sciclient_rmIrqSet() or the Oal_RegisterInterrupt()?

Also, how are you generating the interrupt?

Regards

Karan

Yes, there was no error.

I set the ecap interrupt register.
And I confirmed that ecap4's interrupt status register had changed.
The fan's tachometer is connected to this ecap.

Are your interrupts enabled? What is the value of ECAP_ECINT_EN_FLG register?

Regards

Karan

Hi,

I have enabled all ecap event interrupts.

The ECAP_ECINT_EN_FLG is "0x1FFE"

Hi

Let me try to get some additional details on this. I will get back with more information.

Regards

Karan

Hi Karan.

Thank you for your support.
Please reply as soon as possible.

hi,

I share some of our code.

We impleamented in "vision_apps".

volatile static uint32_t ecap_cnt = 0;

static void ecap_call_back(uintptr_t arg){
    ecap_cnt++;
    uint16_t eceflg = HW_RD_REG16(ecap_baseAddr[0] + ECAP_ECFLG);
    // appLogPrintf("ECAP_ECFLG | 0x02%x \n", eceflg);
    ECAPIntStatusClear(ecap_baseAddr[0], ECAP_INT_ALL);
}

void eCAP_IntrConfig(void)
{
    Int32 retVal = 0;
    uint16_t intNum;
    uint16_t interruptOffset;
    struct tisci_msg_rm_irq_set_req  rmIrqReq = {0};
    struct tisci_msg_rm_irq_set_resp rmIrqResp = {0};
    /* Enable interrupt router settings to connect interrupt event */
    struct tisci_msg_rm_get_resource_range_resp res = {0};
    struct tisci_msg_rm_get_resource_range_req  req = {0};
    uint16_t intStartNum, intRangeNum;
    OsalRegisterIntrParams_t    intrPrms;
    OsalInterruptRetCode_e      osalRetVal;
    HwiP_Handle hwiHandle;

#define SELF_DEVICE_ID TISCI_DEV_R5FSS1_CORE0
    req.type           = TISCI_DEV_R5FSS1_INTROUTER0;
    req.secondary_host = TISCI_MSG_VALUE_RM_UNUSED_SECONDARY_HOST;

    /* Get interrupt number range */
    retVal =  Sciclient_rmGetResourceRange(
              &req,
              &res,
              SCICLIENT_SERVICE_WAIT_FOREVER);
    if (CSL_PASS != retVal || res.range_num == 0)
    {
        /* Try with HOST_ID_ALL */
        req.secondary_host = TISCI_HOST_ID_ALL;

        retVal = Sciclient_rmGetResourceRange(
                 &req,
                 &res,
                 SCICLIENT_SERVICE_WAIT_FOREVER);
    }
    if (CSL_PASS == retVal)
    {
        intRangeNum = res.range_num;
        if (intRangeNum == 0)
        {
            retVal = -2;
        }
    }

    if (CSL_PASS == retVal)
    {
        /* Translation must happen after this offset */
        retVal = Sciclient_rmIrqTranslateIrOutput(req.type,
                                                  res.range_start,
                                                  SELF_DEVICE_ID,
                                                  &intStartNum);
        if(CSL_PASS != retVal)
        {
            retVal = -3;
        }
    }

    if (retVal == 0)
    {
        rmIrqReq.dst_id         = TISCI_DEV_R5FSS1_CORE0;
        rmIrqReq.secondary_host = TISCI_MSG_VALUE_RM_UNUSED_SECONDARY_HOST;

        interruptOffset = 0;

        intNum = intStartNum + interruptOffset;
        appLogPrintf("intNum : %d \n", intNum);
        if (retVal == 0)
        {
            appLogPrintf("Sciclient_rmIrqSet ............... \n");
            /* Set the destination interrupt */
            rmIrqReq.valid_params           = TISCI_MSG_VALUE_RM_DST_ID_VALID;
            rmIrqReq.valid_params          |= TISCI_MSG_VALUE_RM_DST_HOST_IRQ_VALID;
            rmIrqReq.src_id                 = TISCI_DEV_ECAP0;
            rmIrqReq.global_event           = 0U;
            rmIrqReq.src_index              = 0U;
            rmIrqReq.dst_id                 = TISCI_DEV_R5FSS1_CORE0;
            rmIrqReq.dst_host_irq           = intNum;
            rmIrqReq.ia_id                  = 0U;
            rmIrqReq.vint                   = 0U;
            rmIrqReq.vint_status_bit_index  = 0U;
            rmIrqReq.secondary_host         = TISCI_MSG_VALUE_RM_UNUSED_SECONDARY_HOST;
            retVal = Sciclient_rmIrqSet(
                         &rmIrqReq, &rmIrqResp, SCICLIENT_SERVICE_WAIT_FOREVER);
        }
        if (retVal != 0)
            appLogPrintf("Error4444 in SciClient Interrupt Params Configuration!!!\n");
        else
            appLogPrintf("Ok\n");
        if (retVal == 0)
        {
            /* We will have to use the routed interrupt number
            subsequently */
            Osal_RegisterInterrupt_initParams(&intrPrms);

            intrPrms.corepacConfig.arg          = (uint32_t)NULL_PTR;
            intrPrms.corepacConfig.isrRoutine   = (void (*)(uintptr_t))ecap_call_back;
            intrPrms.corepacConfig.priority     = 1U;
            intrPrms.corepacConfig.corepacEventNum = 0U; /* NOT USED  */
            intrPrms.corepacConfig.intVecNum = intNum;

            Osal_ClearInterrupt(intrPrms.corepacConfig.corepacEventNum, intrPrms.corepacConfig.intVecNum);

            osalRetVal = Osal_RegisterInterrupt(&intrPrms, &hwiHandle);
            if(OSAL_INT_SUCCESS != osalRetVal)
            {
                appLogPrintf(": Error in Osal Interrupt Registration Configuration!!!\n");
            }
        }
        else
        {
            appLogPrintf(": Error in SciClient Interrupt Params Configuration!!!\n");
        }

    }
    else
    {
        appLogPrintf(": Error in Interrupt IR translation Configuration!!!\n");
    }

}

The "intNum" is 256.

Is there anything else needs to modified?

Thank you.