root / freemodbus / modbus / functions / mbfuncother.c @ 20e5429c
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| 1 | 20e5429c | Tom Mullins | /*
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| 2 | * FreeModbus Libary: A portable Modbus implementation for Modbus ASCII/RTU.
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| 3 | * Copyright (c) 2006 Christian Walter <wolti@sil.at>
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| 4 | * All rights reserved.
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| 5 | *
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| 6 | * Redistribution and use in source and binary forms, with or without
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| 7 | * modification, are permitted provided that the following conditions
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| 8 | * are met:
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| 9 | * 1. Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * 2. Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * 3. The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | *
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| 28 | * File: $Id: mbfuncother.c,v 1.8 2006/12/07 22:10:34 wolti Exp $
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| 29 | */
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| 30 | |||
| 31 | /* ----------------------- System includes ----------------------------------*/
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| 32 | #include "stdlib.h" |
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| 33 | #include "string.h" |
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| 34 | |||
| 35 | /* ----------------------- Platform includes --------------------------------*/
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| 36 | #include "port.h" |
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| 37 | |||
| 38 | /* ----------------------- Modbus includes ----------------------------------*/
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| 39 | #include "mb.h" |
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| 40 | #include "mbframe.h" |
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| 41 | #include "mbproto.h" |
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| 42 | #include "mbconfig.h" |
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| 43 | |||
| 44 | #if MB_FUNC_OTHER_REP_SLAVEID_ENABLED > 0 |
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| 45 | |||
| 46 | /* ----------------------- Static variables ---------------------------------*/
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| 47 | static UCHAR ucMBSlaveID[MB_FUNC_OTHER_REP_SLAVEID_BUF];
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| 48 | static USHORT usMBSlaveIDLen;
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| 49 | |||
| 50 | /* ----------------------- Start implementation -----------------------------*/
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| 51 | |||
| 52 | eMBErrorCode |
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| 53 | eMBSetSlaveID( UCHAR ucSlaveID, BOOL xIsRunning, |
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| 54 | UCHAR const *pucAdditional, USHORT usAdditionalLen )
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| 55 | {
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| 56 | eMBErrorCode eStatus = MB_ENOERR; |
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| 57 | |||
| 58 | /* the first byte and second byte in the buffer is reserved for
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| 59 | * the parameter ucSlaveID and the running flag. The rest of
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| 60 | * the buffer is available for additional data. */
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| 61 | if( usAdditionalLen + 2 < MB_FUNC_OTHER_REP_SLAVEID_BUF ) |
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| 62 | {
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| 63 | usMBSlaveIDLen = 0;
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| 64 | ucMBSlaveID[usMBSlaveIDLen++] = ucSlaveID; |
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| 65 | ucMBSlaveID[usMBSlaveIDLen++] = ( UCHAR )( xIsRunning ? 0xFF : 0x00 ); |
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| 66 | if( usAdditionalLen > 0 ) |
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| 67 | {
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| 68 | memcpy( &ucMBSlaveID[usMBSlaveIDLen], pucAdditional, |
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| 69 | ( size_t )usAdditionalLen ); |
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| 70 | usMBSlaveIDLen += usAdditionalLen; |
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| 71 | } |
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| 72 | } |
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| 73 | else
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| 74 | {
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| 75 | eStatus = MB_ENORES; |
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| 76 | } |
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| 77 | return eStatus;
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| 78 | } |
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| 79 | |||
| 80 | eMBException |
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| 81 | eMBFuncReportSlaveID( UCHAR * pucFrame, USHORT * usLen ) |
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| 82 | {
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| 83 | memcpy( &pucFrame[MB_PDU_DATA_OFF], &ucMBSlaveID[0], ( size_t )usMBSlaveIDLen );
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| 84 | *usLen = ( USHORT )( MB_PDU_DATA_OFF + usMBSlaveIDLen ); |
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| 85 | return MB_EX_NONE;
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| 86 | } |
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| 87 | |||
| 88 | #endif
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