/*****************************************************************************
 *
 * Atmel Corporation
 *
 * File              : CommChannel.hpp
 * Compiler          : Dev-C++ 4.9.8.0 - http://bloodshed.net/dev/
 * Revision          : $Revision: 1163 $
 * Date              : $Date: 2006-08-02 15:38:16 +0200 (on, 02 aug 2006) $
 * Updated by        : $Author: ohlia $
 *
 * Support mail      : avr@atmel.com
 *
 * Target platform   : Win32
 *
 * AppNote           : AVR911 - AVR Open-source Programmer
 *
 * Description       : An abstract class for general byte-by-byte communication.
 *                     Serialport, USB, TCP/IP or similar implementations can be derived
 *                     from this class to create a technology-independent
 *                     communication interface.
 *
 *                     This abstract class does not provide any constructor as it is
 *                     too specific for this generalized class. Derived classes should
 *                     implement their own constructors for specific communication devices.
 *
 * 
 ****************************************************************************/
#ifndef COMMCHANNEL_HPP
#define COMMCHANNEL_HPP

using namespace std;

class CommChannel
{
	public:
		// Destructor
		virtual ~CommChannel() = 0;

		// Open the communication channel.
		virtual void openChannel() = 0;

		// Close the communication channel.
		virtual void closeChannel() = 0;

		// Transmit a single byte.
		virtual void sendByte( long data ) = 0;

		// Receive a single byte.
		virtual long getByte() = 0;

		// Flush the transmit buffer.
		virtual void flushTX() = 0;

		// Flush the receive buffer.
		virtual void flushRX() = 0;

		// Transmit multiple bytes.
		virtual void sendMultiple( unsigned char * data, long bufsize ) = 0;    
};

#endif