/*---------------------------------------------------------------------------*
  Project:  TwlSDK - MB - demos - fake_child
  File:     gmain.c

  Copyright 2006-2008 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.

  $Date:: 2008-09-18#$
  $Rev: 8573 $
  $Author: okubata_ryoma $
*---------------------------------------------------------------------------*/

#ifdef SDK_TWL
#include	<twl.h>
#else
#include	<nitro.h>
#endif

#include "gmain.h"
#include "common.h"
#include "disp.h"
#include "wh.h"



//============================================================================
//  Variable Definitions
//============================================================================

//-----------------------
// For data sharing
//-----------------------
static u8 sSendBuf[256] ATTRIBUTE_ALIGN(32);    // Send buffer (must be aligned to 32 bytes)
static u8 sRecvBuf[256] ATTRIBUTE_ALIGN(32);    // Receive buffer (must be aligned to 32 bytes)
static BOOL sRecvFlag[1 + WM_NUM_MAX_CHILD];    // Receive flag
static GShareData *sShareDataPtr;

//-----------------------
// For key sharing
//-----------------------
static WMKeySet sKeySet;


//============================================================================
//  Function Definitions
//============================================================================

/*---------------------------------------------------------------------------*
  Name:         GInitDataShare

  Description:  Initializes settings for data-sharing buffer.

  Arguments:    None.

  Returns:      None.
 *---------------------------------------------------------------------------*/
void GInitDataShare(void)
{
    sShareDataPtr = (GShareData *) sSendBuf;

    DC_FlushRange(sSendBuf, 4);
    DC_WaitWriteBufferEmpty();
}


/*---------------------------------------------------------------------------*
  Name:         GStepDataShare

  Description:  Proceeds to the next synchronized data-sharing process.

  Arguments:    None.

  Returns:      None.
 *---------------------------------------------------------------------------*/
void GStepDataShare(s32 frame)
{
    sShareDataPtr->count = (u32)frame;
    sShareDataPtr->key = GetPressKey();

    switch (WH_GetSystemState())
    {
        //------------------------------
        // Data-sharing communication
    case WH_SYSSTATE_DATASHARING:
        {
            u16     i;
            u8     *adr;

            if (!WH_StepDS(sSendBuf))
            {
                // Data-sharing communication failure
                return;
            }

            for (i = 0; i < 16; ++i)
            {
                adr = (u8 *)WH_GetSharedDataAdr(i);
                if (adr != NULL)
                {
                    MI_CpuCopy8(adr, &(sRecvBuf[i * sizeof(GShareData)]), sizeof(GShareData));
                    sRecvFlag[i] = TRUE;
                }
                else
                {
                    sRecvFlag[i] = FALSE;
                }
            }
        }
        break;
        //------------------------------
        // Key-sharing communications
    case WH_SYSSTATE_KEYSHARING:
        {
            (void)WH_GetKeySet(&sKeySet);
            if ((sKeySet.key[0] != 0) || (sKeySet.key[1] != 0))
            {
                OS_TPrintf("0 -> %04x 1 -> %04x\n", sKeySet.key[0], sKeySet.key[1]);
            }
        }
    }
}






/*---------------------------------------------------------------------------*
  Name:         GMain

  Description:  Parent-child common main routine.

  Arguments:    None.

  Returns:      None.
 *---------------------------------------------------------------------------*/
void GMain(void)
{

    BgPrintStr(4, 3, 0x4, "Send:     %04x-%04x", sShareDataPtr->key, sShareDataPtr->count);
    BgPutString(4, 5, 0x4, "Receive:");
    {
        s32     i;

        for (i = 0; i < (WM_NUM_MAX_CHILD + 1); i++)
        {
            if (sRecvFlag[i])
            {
                GShareData *sd;
                sd = (GShareData *) (&(sRecvBuf[i * sizeof(GShareData)]));

                BgPrintStr(4, (s16)(6 + i), 0x4,
                           "Player%02d: %04x-%04x", i, sd->key, sd->count & 0xffff);
            }
            else
            {
                BgPutString(4, (s16)(6 + i), 0x7, "No child");
            }
        }
    }

    if (IS_PAD_TRIGGER(PAD_BUTTON_START))
    {
        //********************************
        (void)WH_Finalize();
        //********************************
    }
}