00001 #ifndef _SYS_MSG_H 00002 #define _SYS_MSG_H 00003 00004 /* 00005 * Copyright (C) 2001-2003 by Telogis.com. 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 * This code was kindly provided by Ralph Mason. 00036 * 00037 */ 00038 00039 /* 00040 * $Log: msg.h,v $ 00041 * Revision 1.2 2004/03/08 11:20:36 haraldkipp 00042 * Not all compilers like arrays of size zero. 00043 * 00044 * Revision 1.1 2004/02/04 18:05:04 drsung 00045 * First version of message queueing implemented. Thanks to Ralph Mason, who provided this code. 00046 * Still contains some debug functions. 00047 * 00048 */ 00049 00050 #include <sys/timer.h> 00051 00052 #ifdef _PC 00053 #pragma warning (disable:4200) 00054 #endif 00055 00056 typedef struct _NUTMSG NUTMSG; 00057 struct _NUTMSG { 00058 u_char id; 00059 int param; 00060 void *data; 00061 }; 00062 00063 typedef struct _NUTMSGTMR NUTMSGTMR; 00064 struct _NUTMSGTMR; 00065 00066 typedef struct _NUTMSGQ NUTMSGQ; 00067 struct _NUTMSGQ { 00068 HANDLE mq_wait; /* Wait for a message */ 00069 NUTMSGTMR *mq_timers; 00070 NUTMSGQ *mq_next; 00071 u_char mq_read; 00072 u_char mq_write; 00073 u_char mq_mask; 00074 NUTMSG mq_que[1]; 00075 }; 00076 00077 00078 extern NUTMSGQ *NutMsgQCreate(u_char len); 00079 extern int NutMsgQBroadcast(u_char id, int param, void *data); 00080 extern int NutMsgQPost(NUTMSGQ * que, u_char id, int param, void *data); 00081 extern int NutMsgQSend(NUTMSGQ * que, u_char id, int param, void *data); 00082 extern int NutMsgQGetMessage(NUTMSGQ * que, NUTMSG * msg, u_long timeout); 00083 extern int NutMsgQFull(NUTMSGQ * que); 00084 extern void NutMsgQFlush(NUTMSGQ * que); 00085 extern HANDLE NutMsgQStartTimer(NUTMSGQ * que, u_long ms, int param, void *data, u_char flags); 00086 extern void NutMsgQStopTimer(HANDLE timer); 00087 00088 #define MSG_TIMER 0xfe 00089 #define MSG_NULL 0xff 00090 00091 #endif