Modbus RTU/ASCII/TCP with lwip TCP working partial, but with errors (retransmitions)
Dependencies: EthernetNetIf mbed
mbframe.h
00001 /* 00002 * FreeModbus Libary: A portable Modbus implementation for Modbus ASCII/RTU. 00003 * Copyright (c) 2006 Christian Walter <wolti@sil.at> 00004 * All rights reserved. 00005 * 00006 * Redistribution and use in source and binary forms, with or without 00007 * modification, are permitted provided that the following conditions 00008 * are met: 00009 * 1. Redistributions of source code must retain the above copyright 00010 * notice, this list of conditions and the following disclaimer. 00011 * 2. Redistributions in binary form must reproduce the above copyright 00012 * notice, this list of conditions and the following disclaimer in the 00013 * documentation and/or other materials provided with the distribution. 00014 * 3. The name of the author may not be used to endorse or promote products 00015 * derived from this software without specific prior written permission. 00016 * 00017 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 00018 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 00019 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 00020 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 00021 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 00022 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 00023 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 00024 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00025 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 00026 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00027 * 00028 * File: $Id: mbframe.h,v 1.9 2006/12/07 22:10:34 wolti Exp $ 00029 */ 00030 00031 #ifndef _MB_FRAME_H 00032 #define _MB_FRAME_H 00033 00034 #ifdef __cplusplus 00035 PR_BEGIN_EXTERN_C 00036 #endif 00037 00038 /*! 00039 * Constants which defines the format of a modbus frame. The example is 00040 * shown for a Modbus RTU/ASCII frame. Note that the Modbus PDU is not 00041 * dependent on the underlying transport. 00042 * 00043 * <code> 00044 * <------------------------ MODBUS SERIAL LINE PDU (1) -------------------> 00045 * <----------- MODBUS PDU (1') ----------------> 00046 * +-----------+---------------+----------------------------+-------------+ 00047 * | Address | Function Code | Data | CRC/LRC | 00048 * +-----------+---------------+----------------------------+-------------+ 00049 * | | | | 00050 * (2) (3/2') (3') (4) 00051 * 00052 * (1) ... MB_SER_PDU_SIZE_MAX = 256 00053 * (2) ... MB_SER_PDU_ADDR_OFF = 0 00054 * (3) ... MB_SER_PDU_PDU_OFF = 1 00055 * (4) ... MB_SER_PDU_SIZE_CRC = 2 00056 * 00057 * (1') ... MB_PDU_SIZE_MAX = 253 00058 * (2') ... MB_PDU_FUNC_OFF = 0 00059 * (3') ... MB_PDU_DATA_OFF = 1 00060 * </code> 00061 */ 00062 00063 /* ----------------------- Defines ------------------------------------------*/ 00064 #define MB_PDU_SIZE_MAX 253 /*!< Maximum size of a PDU. */ 00065 #define MB_PDU_SIZE_MIN 1 /*!< Function Code */ 00066 #define MB_PDU_FUNC_OFF 0 /*!< Offset of function code in PDU. */ 00067 #define MB_PDU_DATA_OFF 1 /*!< Offset for response data in PDU. */ 00068 00069 /* ----------------------- Prototypes 0-------------------------------------*/ 00070 typedef void ( *pvMBFrameStart ) ( void ); 00071 00072 typedef void ( *pvMBFrameStop ) ( void ); 00073 00074 typedef eMBErrorCode( *peMBFrameReceive ) ( UCHAR * pucRcvAddress, 00075 UCHAR ** pucFrame, 00076 USHORT * pusLength ); 00077 00078 typedef eMBErrorCode( *peMBFrameSend ) ( UCHAR slaveAddress, 00079 const UCHAR * pucFrame, 00080 USHORT usLength ); 00081 00082 typedef void( *pvMBFrameClose ) ( void ); 00083 00084 #ifdef __cplusplus 00085 PR_END_EXTERN_C 00086 #endif 00087 #endif
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