F28M36P63C2: Serial Bootloader

Hi Sal,

When I try to write in flash sector L, I'm getting the error 'Fapi_Error_AsyncIncorrectDataBufferLength'.

Below is the code I'm using to write.

    // A data buffer of max 16 bytes can be supplied to the program function.
    // Each word is programmed until the whole buffer is programmed or a
    // problem is found.
    // However to program more a buffer that has more than 16 bytes,
    // program function can be called in a loop to program 16 bytes for each
    // loop iteration until the whole buffer is programmed

    // When AutoEccGeneration option is used, Flash API calculates ECC for the given
    // 64-bit data and programs it along with the 64-bit main array data.
    // Note that any unprovided data with in a 64-bit data slice
    // will be assumed as 1s for calculating ECC and will be programmed.

    for(i=0, u32Index = Bzero_SectorL_start;
       (u32Index < (Bzero_SectorL_start + img->len.u32))
        && (oReturnCheck == Fapi_Status_Success); i+= 16, u32Index+= 16)
    {
        oReturnCheck = Fapi_issueProgrammingCommand((uint32 *)u32Index,
                       img->data+i,
                       16,
                       0,
                       0,
                       Fapi_AutoEccGeneration);

        while(Fapi_checkFsmForReady() == Fapi_Status_FsmBusy);

        if(oReturnCheck != Fapi_Status_Success)
        {
            // Check Flash API documentation for possible errors
            Example_Error(oReturnCheck);
        }

        // Read FMSTAT register contents to know the status of FSM after
        // program command to see if there are any program operation related errors
        oFlashStatus = Fapi_getFsmStatus();
        if(oFlashStatus != 0)
        {
            //Check FMSTAT and debug accordingly
            FMSTAT_Fail();
        }

        // Verify the values programmed.  The Program step itself does a verify
        // as it goes.  This verify is a 2nd verification that can be done.
        oReturnCheck = Fapi_doVerifyByByte((uint8 *)u32Index,
                       16,
                       img->data+i,
                       &oFlashStatusWord);

        if(oReturnCheck != Fapi_Status_Success)
        {
            // Check Flash API documentation for possible errors
            Example_Error(oReturnCheck);
        }
    }

Maybe, it can be something related to the linker command files. I'm attaching the bootloader and the application .cmd files.

Can you guide me on debug this issue, please?

linker_files.zip

Hi,

Can you give some information about img? Is the img size is a mutiple of 16?

In the linker command file, FLASHLOAD size extended to 0xEDA8 i.e. it includes sector L. But you are trying to program again the sector L? Is it intended?

If possible please attach the whole project. It will help understand the issue better.

Thanks,
Katta

Hi, Katta!

Thanks for you reply.

Yes, img size is 8624 bytes.

Yes, I'm trying to erase sector L and I'm getting 'Fapi_Status_success'.

The whole project is attached.

flash_programming_m3.zip