99 lines
3.6 KiB
C
99 lines
3.6 KiB
C
/****************************************************************************
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* apps/functions/mbfuncother.c
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*
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* FreeModbus Library: A portable Modbus implementation for Modbus ASCII/RTU.
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* Copyright (c) 2006 Christian Walter <wolti@sil.at>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdlib.h>
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#include <string.h>
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#include "port.h"
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#include "modbus/mb.h"
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#include "modbus/mbframe.h"
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#include "modbus/mbproto.h"
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#ifdef CONFIG_MB_FUNC_OTHER_REP_SLAVEID_ENABLED
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static uint8_t ucMBSlaveID[CONFIG_MB_FUNC_OTHER_REP_SLAVEID_BUF];
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static uint16_t usMBSlaveIDLen;
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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eMBErrorCode eMBSetSlaveID(uint8_t ucSlaveID, bool xIsRunning,
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uint8_t const *pucAdditional,
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uint16_t usAdditionalLen)
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{
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eMBErrorCode eStatus = MB_ENOERR;
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/* the first byte and second byte in the buffer is reserved for
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* the parameter ucSlaveID and the running flag. The rest of
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* the buffer is available for additional data.
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*/
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if (usAdditionalLen + 2 < CONFIG_MB_FUNC_OTHER_REP_SLAVEID_BUF)
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{
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usMBSlaveIDLen = 0;
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ucMBSlaveID[usMBSlaveIDLen++] = ucSlaveID;
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ucMBSlaveID[usMBSlaveIDLen++] = (uint8_t)(xIsRunning ? 0xFF : 0x00);
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if (usAdditionalLen > 0)
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{
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memcpy(&ucMBSlaveID[usMBSlaveIDLen], pucAdditional,
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(size_t)usAdditionalLen);
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usMBSlaveIDLen += usAdditionalLen;
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}
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}
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else
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{
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eStatus = MB_ENORES;
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}
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return eStatus;
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}
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eMBException eMBFuncReportSlaveID(uint8_t *pucFrame, uint16_t *usLen)
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{
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memcpy(&pucFrame[MB_PDU_DATA_OFF], &ucMBSlaveID[0], (size_t)usMBSlaveIDLen);
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*usLen = (uint16_t)(MB_PDU_DATA_OFF + usMBSlaveIDLen);
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return MB_EX_NONE;
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}
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#endif
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