1 /*
2 * FreeModbus Libary: A portable Modbus implementation for Modbus ASCII/RTU.
3 * Copyright (c) 2006 Christian Walter <wolti@sil.at>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * File: $Id: mbfuncother.c,v 1.8 2006/12/07 22:10:34 wolti Exp $
29 */
30
31 /* ----------------------- System includes ----------------------------------*/
32 #include "stdlib.h"
33 #include "string.h"
34
35 /* ----------------------- Platform includes --------------------------------*/
36 #include "port.h"
37
38 /* ----------------------- Modbus includes ----------------------------------*/
39 #include "mb.h"
40 #include "mbframe.h"
41 #include "mbproto.h"
42 #include "mbconfig.h"
43
44 #if MB_SLAVE_RTU_ENABLED || MB_SLAVE_ASCII_ENABLED || MB_TCP_ENABLED
45
46 #if MB_FUNC_OTHER_REP_SLAVEID_ENABLED
47
48 /* ----------------------- Static variables ---------------------------------*/
49 static UCHAR ucMBSlaveID[MB_FUNC_OTHER_REP_SLAVEID_BUF];
50 static USHORT usMBSlaveIDLen;
51
52 /* ----------------------- Start implementation -----------------------------*/
53
54 eMBErrorCode
eMBSetSlaveID(UCHAR ucSlaveID,BOOL xIsRunning,UCHAR const * pucAdditional,USHORT usAdditionalLen)55 eMBSetSlaveID( UCHAR ucSlaveID, BOOL xIsRunning,
56 UCHAR const *pucAdditional, USHORT usAdditionalLen )
57 {
58 eMBErrorCode eStatus = MB_ENOERR;
59
60 /* the first byte and second byte in the buffer is reserved for
61 * the parameter ucSlaveID and the running flag. The rest of
62 * the buffer is available for additional data. */
63 if( usAdditionalLen + 2 < MB_FUNC_OTHER_REP_SLAVEID_BUF )
64 {
65 usMBSlaveIDLen = 0;
66 ucMBSlaveID[usMBSlaveIDLen++] = ucSlaveID;
67 ucMBSlaveID[usMBSlaveIDLen++] = ( UCHAR )( xIsRunning ? 0xFF : 0x00 );
68 if( usAdditionalLen > 0 )
69 {
70 memcpy( &ucMBSlaveID[usMBSlaveIDLen], pucAdditional,
71 ( size_t )usAdditionalLen );
72 usMBSlaveIDLen += usAdditionalLen;
73 }
74 }
75 else
76 {
77 eStatus = MB_ENORES;
78 }
79 return eStatus;
80 }
81
82 eMBException
eMBFuncReportSlaveID(UCHAR * pucFrame,USHORT * usLen)83 eMBFuncReportSlaveID( UCHAR * pucFrame, USHORT * usLen )
84 {
85 memcpy( &pucFrame[MB_PDU_DATA_OFF], &ucMBSlaveID[0], ( size_t )usMBSlaveIDLen );
86 *usLen = ( USHORT )( MB_PDU_DATA_OFF + usMBSlaveIDLen );
87 return MB_EX_NONE;
88 }
89
90 #endif
91
92 #endif
93
