/*---------------------------------------------------------------------------*
  Project:  TwlSDK - NWM - libraries
  File:     nwm_end.c

  Copyright 2007-2008 Nintendo. All rights reserved.

  These coded instructions, statements, and computer programs contain
  proprietary information of Nintendo of America Inc. and/or Nintendo
  Company Ltd., and are protected by Federal copyright law. They may
  not be disclosed to third parties or copied or duplicated in any form,
  in whole or in part, without the prior written consent of Nintendo.

  $Date:: 2008-09-17#$
  $Rev: 8556 $
  $Author: okubata_ryoma $
 *---------------------------------------------------------------------------*/

#include <twl.h>
#include "nwm_common_private.h"
#include "nwm_arm9_private.h"


/*---------------------------------------------------------------------------*
  Name:         NWM_End

  Description:  
                

  Arguments:    callback: Callback function that is called when the asynchronous process completes

  Returns:      NWMRetCode: Returns the processing result.
                                Returns NWM_ERRCODE_OPERATING if asynchronous processing started successfully. Afterwards, the asynchronous processing results will be passed to the callback.
                                
 *---------------------------------------------------------------------------*/

NWMRetCode NWM_End(void)
{
    NWMRetCode result;
    OSIntrMode e;
    extern NWMArm9Buf *nwm9buf;
    extern u8 nwmInitialized;

    SDK_NULL_ASSERT(nwm9buf);
    
    // This can only run in the INITIALIZED state
    result = NWMi_CheckState(1, NWM_STATE_INITIALIZED);
    NWM_CHECK_RESULT(result);

    e = OS_DisableInterrupts();
    
    nwm9buf->status->state = NWM_STATE_NONE;  // As an exception, set the initial state here alone (this was originally done by the ARM7)

    // Clears the FIFO buffer writable flag
    NWMi_ClearFifoRecvFlag();
    
    PXI_SetFifoRecvCallback(PXI_FIFO_TAG_WMW, NULL);
    nwm9buf = 0;
    
    // Normal end
    nwmInitialized = 0;
    (void)OS_RestoreInterrupts(e);
    return NWM_RETCODE_SUCCESS;
}