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problems with edma3init() function in LLD

Zhao Shui
Intellectual 910 points

Hi,everyone

In the 6678 LLD sample,edma3init() returns EDMA3_DRV_Handle ( hEdma[i] = edma3init(i, &edmaResult);)and I can build the sample successfully.                                                                                                                              But when I add this function to my own project and compile,it tells me edma3init() should return a int or  actually EDMA3_DRV_Result value,and in eariler LLD sample I find the edma3init() does return EDMA3_DRV_Result rather than EDMA3_DRV_Handle and the EDMA configuration code seems a bit different.

I try to find the definition of edma3init() in CCS help content but failed.Since I don't find others have such problem,so I must overlook some important configuration.Could somone please point it out for me?

By the way,without the edma3init() I can build my own project successfully,so I think the lib and LLD is already added to my project.here is a link to my code:http://e2e.ti.com/support/dsp/c6000_multi-core_dsps/f/639/p/235865/826580.aspx#826580.

Thank you very much.

Zhao

  • 0
    TI__Genius 12065 points

    Zhao,

    You can find the EDMA3 LLD documentation in the folder as follows:

    C:\ti\edma3_lld_02_11_05_02\packages\ti\sdo\edma3\drv\docs

    "EDMA3_Driver_User_Guide" mentions that "edma2init()" is defined as follows:

    /**
    * \brief EDMA3 Initialization
    *
    * This function initializes the EDMA3 Driver for the given EDMA3 controller
    * and opens a EDMA3 driver instance. It internally calls EDMA3_DRV_create() and
    * EDMA3_DRV_open(), in that order.
    *
    * It also registers interrupt handlers for various EDMA3 interrupts like
    * transfer completion or error interrupts.
    *
    * \param edma3Id [IN] EDMA3 Controller Instance Id (Hardware
    * instance id, starting from 0)
    * \param errorCode [IN/OUT] Error code while opening DRV instance
    * \return EDMA3_DRV_Handle: If successfully opened, the API will return the
    * associated driver's instance handle.
    */
    EDMA3_DRV_Handle edma3init (unsigned int edma3Id, EDMA3_DRV_Result *errorCode);

    Please take a look at your own project to see if the latest LLD is included.

    Since you can build the sample project (with EDMA3_DRV_Handle for edma3init) successfully, you can compare the "build properties" of your own project with the EDMA3 LLD sample project to see if any difference.