interrupt.c

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00001 /*
00002 This file is part of CanFestival, a library implementing CanOpen Stack. 
00003 
00004 Copyright (C): Edouard TISSERANT and Francis DUPIN
00005 
00006 See COPYING file for copyrights details.
00007 
00008 This library is free software; you can redistribute it and/or
00009 modify it under the terms of the GNU Lesser General Public
00010 License as published by the Free Software Foundation; either
00011 version 2.1 of the License, or (at your option) any later version.
00012 
00013 This library is distributed in the hope that it will be useful,
00014 but WITHOUT ANY WARRANTY; without even the implied warranty of
00015 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00016 Lesser General Public License for more details.
00017 
00018 You should have received a copy of the GNU Lesser General Public
00019 License along with this library; if not, write to the Free Software
00020 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00021 */
00022 
00023 /*
00024 Functions called by interrupts vectors.
00025 */
00026 /*
00027 This is a part of the driver, of course !
00028 But you have to put your code in this functions,
00029 if you plan to use interruptions.
00030 */
00031 
00032 #include "../include/data.h"
00033 #include "../include/hcs12/applicfg.h"
00034 #include "../include/hcs12/error.h"
00035 #include "../include/hcs12/candriver.h"
00036 #include "../include/hcs12/asm-m68hc12/regs.h"
00037 #include "../include/hcs12/asm-m68hc12/portsaccess.h"
00038 #include "../include/hcs12/asm-m68hc12/ports_def.h"
00039 #include "../include/hcs12/asm-m68hc12/ports.h"
00040 #include "../include/hcs12/interrupt.h"
00041 
00042 extern volatile char msgRecu;
00043 extern volatile Message canMsgRcv;
00044 
00045 
00046 
00047 /* Inhibe les interruptions */
00048 
00049 void lock (void)
00050 {
00051    unsigned short mask;
00052    __asm__ __volatile__ ("tpa\n\tsei" : "=d"(mask));
00053 
00054 }
00055 
00056 /* Autorise les interruptions */
00057 void unlock (void)
00058 { 
00059    __asm__ __volatile__ ("cli");
00060 }
00061 
00062 
00063 
00064 

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