AM5728: Dcan normal mode configure

Hi,

We don't have example code in AM57xx SDK other than loopback test.

However, the same DCAN IP is used on other TI SoC so I was able to find some example from other TI SDK below for your reference.

Please also make sure you configure the pinmux for both CAN TX and RX.

/cfs-file/__key/communityserver-discussions-components-files/791/3173.dcan.zip

/**
  *****************************************************************************
  * \brief Intialize default values for DCAN rx mailbox configuration
  *
  * \param pDcanRxCfgPrms Config params rx mailbox intialization
  * \param msgId Message Id asscoiated with the mailbox
  *
  *****************************************************************************
*/
static void Utils_dcanInitRxMsgObjParams(dcanMsgObjCfgParams_t *pDcanRxCfgPrms,
                                         UInt32 msgId,UInt32 msgType)
{
    /*Intialize DCAN Rx Config Params*/
    pDcanRxCfgPrms->xIdFlagMask       = 0x1;
    pDcanRxCfgPrms->dirMask           = 0x1;
    pDcanRxCfgPrms->msgIdentifierMask = 0x1FFFFFFF;

    pDcanRxCfgPrms->msgValid      = TRUE;
    pDcanRxCfgPrms->xIdFlag       = msgType;
    pDcanRxCfgPrms->direction     = DCAN_DIR_RX;
    if (FALSE == pDcanRxCfgPrms->xIdFlag)
    {
        msgId = (msgId & 0x7FF) << 18;
    }
    pDcanRxCfgPrms->msgIdentifier = msgId;

    pDcanRxCfgPrms->uMaskUsed    = TRUE;
    pDcanRxCfgPrms->intEnable    = TRUE;
    pDcanRxCfgPrms->remoteEnable = FALSE;

    pDcanRxCfgPrms->fifoEOBFlag  = TRUE;

}

/**
  *****************************************************************************
  * \brief Intialize default values for DCAN tx mailbox configuration
  *
  * \param pDcanTxCfgPrms Config params tx mailbox intialization
  * \param msgId Message Id asscoiated with the mailbox
  *
  *****************************************************************************
*/
static void Utils_dcanInitTxMsgObjParams(dcanMsgObjCfgParams_t *pDcanTxCfgPrms,
                                         UInt32 msgId,UInt32 msgType)
{
    /*Intialize DCAN tx Config Params*/
    pDcanTxCfgPrms->xIdFlagMask       = 0x1;
    pDcanTxCfgPrms->dirMask           = 0x1;
    pDcanTxCfgPrms->msgIdentifierMask = 0x1FFFFFFF;

    pDcanTxCfgPrms->msgValid      = TRUE;
    pDcanTxCfgPrms->xIdFlag       = msgType;
    pDcanTxCfgPrms->direction     = DCAN_DIR_TX;
    if (FALSE == pDcanTxCfgPrms->xIdFlag)
    {
        msgId = (msgId & 0x7FF) << 18;
    }
    pDcanTxCfgPrms->msgIdentifier = msgId;

    pDcanTxCfgPrms->uMaskUsed    = TRUE;
    pDcanTxCfgPrms->intEnable    = TRUE;
    pDcanTxCfgPrms->remoteEnable = FALSE;

    pDcanTxCfgPrms->fifoEOBFlag  = TRUE;
}


/**
  *****************************************************************************
  * \brief DCAN controller configuration default params initialization
  *
  * \param pDcanCfgPrms Config params to intialize
  *
  *****************************************************************************
*/
static void Utils_dcanInitControllerParams(dcanCfgParams_t       *pDcanCfgPrms)
{
    /*Intialize DCAN Config Params*/
    pDcanCfgPrms->parityEnable          = FALSE;
    pDcanCfgPrms->autoRetransmitDisable = TRUE;
    pDcanCfgPrms->autoBusOnEnable       = FALSE;
    pDcanCfgPrms->intrLine0Enable       = FALSE;
    pDcanCfgPrms->intrLine1Enable       = TRUE;
    pDcanCfgPrms->errIntrEnable         = FALSE;
    pDcanCfgPrms->stsChangeIntrEnable   = FALSE;
#ifdef TDA3XX_FAMILY_BUILD
    pDcanCfgPrms->eccModeEnable = FALSE;
#endif
    pDcanCfgPrms->autoBusOnTimerVal = FALSE;
    if (dcanConfig.enableLoopback)
    {
        pDcanCfgPrms->testModeEnable    = TRUE;
        pDcanCfgPrms->testMode          = DCAN_TEST_MODE_EXT_LPBACK;
    }
    else
    {
        pDcanCfgPrms->testModeEnable    = FALSE;
        pDcanCfgPrms->testMode          = DCAN_TEST_MODE_NONE;
    }
    pDcanCfgPrms->if1DmaEnable      = FALSE;
    pDcanCfgPrms->if2DmaEnable      = FALSE;
    pDcanCfgPrms->if3DmaEnable      = FALSE;
    pDcanCfgPrms->ramAccessEnable   = FALSE;
}

Regards,
Stanley