halt0.c

来自「一个免费的SMART CARD OS系统。」· C语言 代码 · 共 101 行

/* ============================================================================
   Project Name : jayaCard
   Module Name  : proto/hal/simu/halt0.c
   Version : $Id: halt0.c,v 1.16 2004/03/07 10:43:23 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
   011903 dgil	wrote it from scratch
   ============================================================================
*/

#include "precomp.h"

/* =========================================================================
	__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)
{
	PSIMUMSG	msg;
	jresult		res;

	msg = new_simumsg(SIMUMSG_T0_CHAR,by);
	if (msg==NULL) {
		fprintf(stderr,"__hal_t0_send(0x%x) - can't create simumsg !\n",by);
		throw THROW_RECONNECT;
	}

	res = send_simumsg(socketCard,msg);
	if (res!=JY_OK) {
		fprintf(stderr,"__hal_t0_send(0x%x) - can't send simumsg !\n",by);
		throw THROW_RECONNECT;
	}

	LOG1("T0","<%.2X>",by);

	free_simumsg(msg);
}

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

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

jbyte __hal_t0_receive(void)
{
	PSIMUMSG	msg;
	jbyte		by;
	jresult		res;

loop:
	res = receive_simumsg(socketCard,&msg);
	if (res!=JY_OK) {
		fprintf(stderr,"__hal_t0_receive() - can't receive simumsg !\n");
		throw THROW_RECONNECT;
	}

	if (msg->h.kindof!=SIMUMSG_T0_CHAR) {
		__simu_dispatch(msg);
		goto loop;
	}

	by = (jbyte) msg->h.param;
	LOG1("T0",">%.2X<",by);

	free_simumsg(msg);
	return by;
}

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