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當所有的SD卡相關的程式都寫好了，如果沒在MPLAB中作一些設定，在編譯時還是會出現error。

When all functions of SD is prepared well, errors will happen if some operations are setup in MPLAB. 

1. 選擇Project -> Build Option ->Project

    Select Project -> Build Option -> Project;

2. 選擇MPLAB C18的選項，在分類欄中選擇Memory Model

    Click the MPLAB C18 tab and select Memory Model in Categories.

3. 設定下列選項

    Set the following options:

    (1) Code Model: Large code model

    (2) Data Model: Large data model

    (3) Stack Model: Multibank model

4. 避免"Error - could not find definition of symbol 'MDD_SDSPI_InitIO' in file './FSIO.o'."

    Prevent error "Error - could not find definition of symbol 'MDD_SDSPI_InitIO' in file './FSIO.o'."

    進入 Project>Built Options>Project>MPADM/C17/C18 Suite

    選擇 Built Library target (invoke MPLIB)

   
    Enter Project>Built Options>Project>MPADM/C17/C18 Suite
    select Built Library target (invoke MPLIB)

設定好後，如果你的SD卡程式是ok的，應該就會work ~~~

After setting, if you sd program is ok, your function will work ~~~