00001 #ifndef _DEV_TWIF_H_ 00002 #define _DEV_TWIF_H_ 00003 00004 /* 00005 * Copyright (C) 2001-2005 by egnite Software GmbH. All rights reserved. 00006 * 00007 * Redistribution and use in source and binary forms, with or without 00008 * modification, are permitted provided that the following conditions 00009 * are met: 00010 * 00011 * 1. Redistributions of source code must retain the above copyright 00012 * notice, this list of conditions and the following disclaimer. 00013 * 2. Redistributions in binary form must reproduce the above copyright 00014 * notice, this list of conditions and the following disclaimer in the 00015 * documentation and/or other materials provided with the distribution. 00016 * 3. Neither the name of the copyright holders nor the names of 00017 * contributors may be used to endorse or promote products derived 00018 * from this software without specific prior written permission. 00019 * 00020 * THIS SOFTWARE IS PROVIDED BY EGNITE SOFTWARE GMBH AND CONTRIBUTORS 00021 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00022 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 00023 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL EGNITE 00024 * SOFTWARE GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 00025 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 00026 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 00027 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 00028 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 00029 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 00030 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00031 * SUCH DAMAGE. 00032 * 00033 * For additional information see http://www.ethernut.de/ 00034 */ 00035 00036 /* 00037 * $Log: twif.h,v $ 00038 * Revision 1.2 2005/10/24 10:56:30 haraldkipp 00039 * Added const modifier to transmit data pointer in TwMasterTransact(). 00040 * 00041 * Revision 1.1.1.1 2003/05/09 14:41:09 haraldkipp 00042 * Initial using 3.2.1 00043 * 00044 * Revision 1.2 2003/03/31 14:53:23 harald 00045 * Prepare release 3.1 00046 * 00047 */ 00048 00049 #include <sys/types.h> 00050 00051 #define TWI_SETSPEED 0x0401 00052 #define TWI_GETSPEED 0x0402 00053 #define TWI_SETSLAVEADDRESS 0x0403 00054 #define TWI_GETSLAVEADDRESS 0x0404 00055 #define TWI_SETSTATUS 0x0409 00056 #define TWI_GETSTATUS 0x040a 00059 #define TWERR_OK 0 00060 #define TWERR_TIMEOUT 1 00061 #define TWERR_BUS 2 00062 #define TWERR_IF_LOCKED 3 00063 #define TWERR_SLA_NACK 4 00064 #define TWERR_DATA_NACK 5 00067 #define TWSLA_MIN 17 00071 #define TWSLA_MAX 79 00075 #define TWSLA_BCAST 0 00076 #define TWSLA_HOST 16 00077 #define TWSLA_DEFAULT 193 00079 extern int TwInit(u_char sla); 00080 extern int TwIOCtl(int req, void *conf); 00081 00082 extern int TwMasterTransact(u_char sla, CONST void *txdata, u_short txlen, void *rxdata, u_short rxsiz, u_long tmo); 00083 extern int TwMasterError(void); 00084 00085 extern int TwSlaveListen(u_char *sla, void *rxdata, u_short rxsiz, u_long tmo); 00086 extern int TwSlaveRespond(void *txdata, u_short txlen, u_long tmo); 00087 extern int TwSlaveError(void); 00088 00089 00090 #endif