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https://github.com/emqx/neuron.git
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fengzero
97 lines
3.0 KiB
C
97 lines
3.0 KiB
C
/**
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* NEURON IIoT System for Industry 4.0
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* Copyright (C) 2020-2022 EMQ Technologies Co., Ltd All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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**/
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#ifndef _NEU_M_PLUGIN_MODBUS_H_
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#define _NEU_M_PLUGIN_MODBUS_H_
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#include <stdbool.h>
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#include <stdint.h>
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#include <neuron.h>
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/* LL -> LE 1,2,3,4
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LB -> LE 2,1,4,3
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BB -> BE 3,4,1,2
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BL -> BE 4,3,2,1
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L64 -> 1,2,3,4,5,6,7,8
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B64 -> 8,7,6,5,4,3,2,1
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*/
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/* big-endian order */
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typedef enum modbus_function {
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MODBUS_READ_COIL = 0x1,
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MODBUS_READ_INPUT = 0x02,
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MODBUS_READ_HOLD_REG = 0x03,
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MODBUS_READ_INPUT_REG = 0x04,
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MODBUS_WRITE_S_COIL = 0x05,
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MODBUS_WRITE_S_HOLD_REG = 0x06,
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MODBUS_WRITE_M_HOLD_REG = 0x10,
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MODBUS_WRITE_M_COIL = 0x0F
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} modbus_function_e;
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typedef enum modbus_area {
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MODBUS_AREA_COIL = 0,
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MODBUS_AREA_INPUT = 1,
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MODBUS_AREA_INPUT_REGISTER = 3,
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MODBUS_AREA_HOLD_REGISTER = 4,
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} modbus_area_e;
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struct modbus_header {
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uint16_t seq;
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uint16_t protocol;
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uint16_t len;
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} __attribute__((packed));
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void modbus_header_wrap(neu_protocol_pack_buf_t *buf, uint16_t seq);
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int modbus_header_unwrap(neu_protocol_unpack_buf_t *buf,
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struct modbus_header * out_header);
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struct modbus_code {
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uint8_t slave_id;
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uint8_t function;
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} __attribute__((packed));
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void modbus_code_wrap(neu_protocol_pack_buf_t *buf, uint8_t slave_id,
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uint8_t function);
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int modbus_code_unwrap(neu_protocol_unpack_buf_t *buf,
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struct modbus_code * out_code);
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struct modbus_address {
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uint16_t start_address;
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uint16_t n_reg;
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} __attribute__((packed));
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void modbus_address_wrap(neu_protocol_pack_buf_t *buf, uint16_t start,
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uint16_t n_register);
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int modbus_address_unwrap(neu_protocol_unpack_buf_t *buf,
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struct modbus_address * out_address);
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struct modbus_data {
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uint8_t n_byte;
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uint8_t byte[];
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} __attribute__((packed));
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void modbus_data_wrap(neu_protocol_pack_buf_t *buf, uint8_t n_byte,
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uint8_t *bytes);
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int modbus_data_unwrap(neu_protocol_unpack_buf_t *buf,
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struct modbus_data * out_data);
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const char *modbus_area_to_str(modbus_area_e area);
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#endif |