sl@0: // Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of the License "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: // bootldr\inc\ymodem.h
sl@0: // 
sl@0: //
sl@0: 
sl@0: #ifndef __YMODEM_H__
sl@0: #define __YMODEM_H__
sl@0: 
sl@0: #ifndef __KERNEL_MODE__
sl@0: #include <e32base.h>
sl@0: typedef CBase BASE;
sl@0: //#else
sl@0: //#include <kernel/kernel.h>
sl@0: //typedef DBase BASE;
sl@0: #endif
sl@0: 
sl@0: const TUint8 SOH=0x01;
sl@0: const TUint8 STX=0x02;
sl@0: const TUint8 EOT=0x04;
sl@0: const TUint8 ACK=0x06;
sl@0: const TUint8 NAK=0x15;
sl@0: const TUint8 CAN=0x18;
sl@0: const TUint8 SUB=0x1A;
sl@0: const TUint8 BIGC=0x43;
sl@0: const TUint8 BIGG=0x47;
sl@0: 
sl@0: const TInt KErrZeroLengthPacket=-200;
sl@0: const TInt KErrPacketTooShort=-201;
sl@0: const TInt KErrBadPacketType=-202;
sl@0: const TInt KErrCorruptSequenceNumber=-203;
sl@0: const TInt KErrWrongSequenceNumber=-204;
sl@0: const TInt KErrBadCrc=-205;
sl@0: const TInt KErrBadTerminationPacket=-206;
sl@0: 
sl@0: const TInt KHeaderBufferSize=1024; 
sl@0: 
sl@0: class YModem : public BASE
sl@0: 	{
sl@0: public:
sl@0: 	TInt StartDownload(TBool aG, TInt& aLength, TDes& aName);
sl@0: 	TInt ReadPackets(TUint8*& aDest, TInt aLength);
sl@0: 	
sl@0: 	// Support to deflated ROM Image
sl@0: 	TInt GetInnerCompression(TBool &aImageDeflated, TBool &aRomLoaderHeaderExists);
sl@0: 	TInt GetHeaderBufferContent(TUint8*& aDest, TInt& aLength);
sl@0: 	TBool IsHeaderStored(void);
sl@0: protected:
sl@0: 	YModem(TBool aG);
sl@0: 	void UpdateCrc(const TUint8* aPtr, TInt aLength);
sl@0: 	TInt CheckPacket(TUint8* aDest);
sl@0: 	TInt ReadPacket(TDes8& aDest);
sl@0: 	virtual TInt ReadBlock(TDes8& aDest)=0;
sl@0: 	virtual void WriteC(TUint aChar)=0;
sl@0: protected:
sl@0: 	TInt iTimeout;
sl@0: 	TInt iState;
sl@0: 	TInt iPacketSize;
sl@0: 	TInt iBlockSize;
sl@0: 	TUint8 iInitChar;
sl@0: 	TUint8 iSeqNum;
sl@0: 	TUint16 iCrc;
sl@0: 	TInt iFileSize;
sl@0: 	TBuf8<1040> iPacketBuf;
sl@0: 	TBuf<256> iFileName;
sl@0:     
sl@0:     // Support to deflated ROM Image
sl@0: 	TBuf8<KHeaderBufferSize> iHeaderBuf;
sl@0:     TBool iHeaderStored;
sl@0:     TInt iDataSizeInPuffer;
sl@0:     TBool iImageDeflated;
sl@0: 	};
sl@0: 
sl@0: #endif