confos.c

Go to the documentation of this file.
00001 /*
00002  * Copyright (C) 2001-2006 by egnite Software GmbH. All rights reserved.
00003  *
00004  * Redistribution and use in source and binary forms, with or without
00005  * modification, are permitted provided that the following conditions
00006  * are met:
00007  *
00008  * 1. Redistributions of source code must retain the above copyright
00009  *    notice, this list of conditions and the following disclaimer.
00010  * 2. Redistributions in binary form must reproduce the above copyright
00011  *    notice, this list of conditions and the following disclaimer in the
00012  *    documentation and/or other materials provided with the distribution.
00013  * 3. Neither the name of the copyright holders nor the names of
00014  *    contributors may be used to endorse or promote products derived
00015  *    from this software without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY EGNITE SOFTWARE GMBH AND CONTRIBUTORS
00018  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
00019  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
00020  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL EGNITE
00021  * SOFTWARE GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
00022  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
00023  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
00024  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
00025  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
00026  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
00027  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00028  * SUCH DAMAGE.
00029  *
00030  * For additional information see http://www.ethernut.de/
00031  *
00032  */
00033 
00034 /*
00035  * $Log: confos.c,v $
00036  * Revision 1.9  2006/05/25 09:18:28  haraldkipp
00037  * API documentation updated and corrected.
00038  *
00039  * Revision 1.8  2006/01/23 19:50:48  haraldkipp
00040  * Dummy NVMEM configuration for GBA added.
00041  *
00042  * Revision 1.7  2006/01/23 17:26:17  haraldkipp
00043  * Platform independant routines added, which provide generic access to
00044  * non-volatile memory.
00045  *
00046  * Revision 1.6  2005/07/26 15:49:59  haraldkipp
00047  * Cygwin support added.
00048  *
00049  * Revision 1.5  2004/09/08 10:24:34  haraldkipp
00050  * No EEPROM support for AT91
00051  *
00052  * Revision 1.4  2004/04/07 12:13:58  haraldkipp
00053  * Matthias Ringwald's *nix emulation added
00054  *
00055  * Revision 1.3  2004/03/16 16:48:45  haraldkipp
00056  * Added Jan Dubiec's H8/300 port.
00057  *
00058  * Revision 1.2  2004/03/03 17:42:19  drsung
00059  * Bugfix in NutSaveConfig. Write only to eeprom if actual byte in
00060  * eeprom differs from byte to write.
00061  *
00062  * Revision 1.1.1.1  2003/05/09 14:41:46  haraldkipp
00063  * Initial using 3.2.1
00064  *
00065  * Revision 1.1  2003/02/04 18:17:07  harald
00066  * Version 3 released
00067  *
00068  */
00069 
00070 #include <cfg/arch.h>
00071 #include <sys/confos.h>
00072 #include <dev/nvmem.h>
00073 
00078 
00085 CONFOS confos;
00086 
00095 int NutLoadConfig(void)
00096 {
00097 #if !defined(__linux__) && !defined(__APPLE__) && !defined(__CYGWIN__) && !defined(MCU_GBA)
00098     if (NutNvMemLoad(CONFOS_EE_OFFSET, &confos, sizeof(CONFOS))) {
00099         return -1;
00100     }
00101     if (confos.size != sizeof(CONFOS) || confos.magic[0] != 'O' || confos.magic[1] != 'S') {
00102         return -1;
00103     }
00104 #endif
00105     return 0;
00106 }
00107 
00113 int NutSaveConfig(void)
00114 {
00115 #if !defined(__linux__) && !defined(__APPLE__) && !defined(__CYGWIN__) && !defined(MCU_GBA)
00116     confos.size = sizeof(CONFOS);
00117     confos.magic[0] = 'O';
00118     confos.magic[1] = 'S';
00119     if (NutNvMemSave(CONFOS_EE_OFFSET, &confos, sizeof(CONFOS))) {
00120         return -1;
00121     }
00122 #endif
00123     return 0;
00124 }
00125 

© 2000-2007 by egnite Software GmbH - visit http://www.ethernut.de/