halt0.c

开发源代码的CPU卡的COS源程序。

/* ============================================================================
   Project Name : jayaCard
   Module Name  : proto/hal/avr/halt0.c
   Version : $Id: halt0.c,v 1.3 2004/01/11 09:56:32 dgil Exp $

	Description: T=0 send/receive byte

    The Original Code is jayaCard code.

    The Initial Developer of the Original Code is Gilles Dumortier.

    Portions created by the Initial Developer are Copyright (C) 2002-2004 the
    Initial Developer. All Rights Reserved.

    Contributor(s):

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; see http://www.gnu.org/licenses/gpl.html

   History Rev	Description
   073103 dgil	wrote it from scratch
   ============================================================================
*/

#include "precomp.h"

/* =========================================================================
	Assembly sub-routines
   ========================================================================= */

extern void sendbytet0(jbyte by);
extern jbyte recbytet0(void);

/* =========================================================================
	__hal_t0_send(byte)

	Send a byte on the T=0 interface, except the first byte which will be
	sent using __hal_t0_firstsend because of the required timing to reverse
	the communication side (receive to send)
   ========================================================================= */

void __hal_t0_send(jbyte by)
{
	sendbytet0( by );
}

/* =========================================================================
	__hal_t0_receive()

	For for a byte on the T=0 interface
   ========================================================================= */

jbyte __hal_t0_receive(void)
{
	return recbytet0();
}

/* =========================================================================
	That's all folks !
   ========================================================================= */