forked from espressif/esp-modbus
69 lines
3.0 KiB
C
69 lines
3.0 KiB
C
/*
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* FreeModbus Libary: A portable Modbus implementation for Modbus ASCII/RTU.
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* Copyright (c) 2016, 2017 Nucleron R&D LLC <main@nucleron.ru>
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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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* File: $Id: mbfuncother.c, v 1.8 2006/12/07 22:10:34 wolti Exp $
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*/
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#include <mb_common.h>
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#include <mb_proto.h>
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#include "mb_slave.h"
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#if MB_FUNC_OTHER_REP_SLAVEID_ENABLED
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/* ----------------------- Start implementation -----------------------------*/
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mb_err_enum_t mb_set_slv_id(mb_base_t *inst, uint8_t slv_id, bool is_running, uint8_t const *slv_idstr, uint16_t slv_idstr_len)
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{
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mb_err_enum_t status = MB_ENOERR;
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/* the first byte and second byte in the buffer is reserved for
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* the parameter slv_id and the running flag. The rest of
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* the buffer is available for additional data. */
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if (slv_idstr_len + 2 < MB_FUNC_OTHER_REP_SLAVEID_BUF) {
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inst->slave_id_len = 0;
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inst->slave_id[inst->slave_id_len++] = slv_id;
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inst->slave_id[inst->slave_id_len++] = (uint8_t)(is_running ? 0xFF : 0x00);
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if (slv_idstr_len > 0) {
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memcpy(&inst->slave_id[inst->slave_id_len], slv_idstr,
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(size_t)slv_idstr_len);
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inst->slave_id_len += slv_idstr_len;
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}
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} else {
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status = MB_ENORES;
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}
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return status;
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}
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mb_exception_t mb_fn_report_slv_id(mb_base_t *inst, uint8_t *frame_ptr, uint16_t *len_buf)
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{
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memcpy(&frame_ptr[MB_PDU_DATA_OFF], &inst->slave_id[0], (size_t)inst->slave_id_len);
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*len_buf = (uint16_t)(MB_PDU_DATA_OFF + inst->slave_id_len);
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return MB_EX_NONE;
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}
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#endif
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