f0eb9985b9
This example adds functionality to support basic communication in RS485 networks using Modbus protocol. This example uses FreeModbus stack and regular UART driver API to communicate in RS485 half duplex mode. Added initial support of modbus controller pure C api to access device parameters over Modbus transport. Move freemodbus stack and port files into components folder Move the modbus_controller interface into components idf folder Source files updated after review. Add modbus interface documentation docs/en/api-reference/protocols/modbus.rst porttimer.c: fix bug with timer1 selected in the Kconfig Add support of cmake system (added cmake files) Closes https://github.com/espressif/esp-idf/issues/858
133 lines
5.4 KiB
C
133 lines
5.4 KiB
C
/*
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* FreeModbus Libary: 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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* File: $Id: mbconfig.h,v 1.15 2010/06/06 13:54:40 wolti Exp $
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*/
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#ifndef _MB_CONFIG_H
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#define _MB_CONFIG_H
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#ifdef __cplusplus
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PR_BEGIN_EXTERN_C
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#endif
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/* ----------------------- Defines ------------------------------------------*/
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/*! \defgroup modbus_cfg Modbus Configuration
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*
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* Most modules in the protocol stack are completly optional and can be
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* excluded. This is specially important if target resources are very small
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* and program memory space should be saved.<br>
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*
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* All of these settings are available in the file <code>mbconfig.h</code>
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*/
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/*! \addtogroup modbus_cfg
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* @{
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*/
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/*! \brief If Modbus ASCII support is enabled. */
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#define MB_ASCII_ENABLED ( 0 )
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/*! \brief If Modbus RTU support is enabled. */
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#define MB_RTU_ENABLED ( 1 )
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/*! \brief If Modbus TCP support is enabled. */
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#define MB_TCP_ENABLED ( 0 )
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/*! \brief The character timeout value for Modbus ASCII.
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*
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* The character timeout value is not fixed for Modbus ASCII and is therefore
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* a configuration option. It should be set to the maximum expected delay
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* time of the network.
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*/
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#define MB_ASCII_TIMEOUT_SEC ( 1 )
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/*! \brief Timeout to wait in ASCII prior to enabling transmitter.
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*
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* If defined the function calls vMBPortSerialDelay with the argument
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* MB_ASCII_TIMEOUT_WAIT_BEFORE_SEND_MS to allow for a delay before
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* the serial transmitter is enabled. This is required because some
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* targets are so fast that there is no time between receiving and
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* transmitting the frame. If the master is to slow with enabling its
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* receiver then he will not receive the response correctly.
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*/
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#ifndef MB_ASCII_TIMEOUT_WAIT_BEFORE_SEND_MS
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#define MB_ASCII_TIMEOUT_WAIT_BEFORE_SEND_MS ( 0 )
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#endif
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/*! \brief Maximum number of Modbus functions codes the protocol stack
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* should support.
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*
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* The maximum number of supported Modbus functions must be greater than
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* the sum of all enabled functions in this file and custom function
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* handlers. If set to small adding more functions will fail.
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*/
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#define MB_FUNC_HANDLERS_MAX ( 16 )
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/*! \brief Number of bytes which should be allocated for the <em>Report Slave ID
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* </em>command.
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*
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* This number limits the maximum size of the additional segment in the
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* report slave id function. See eMBSetSlaveID( ) for more information on
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* how to set this value. It is only used if MB_FUNC_OTHER_REP_SLAVEID_ENABLED
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* is set to <code>1</code>.
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*/
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#define MB_FUNC_OTHER_REP_SLAVEID_BUF ( 32 )
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/*! \brief If the <em>Report Slave ID</em> function should be enabled. */
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#define MB_FUNC_OTHER_REP_SLAVEID_ENABLED ( CONFIG_MB_CONTROLLER_SLAVE_ID_SUPPORT )
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/*! \brief If the <em>Read Input Registers</em> function should be enabled. */
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#define MB_FUNC_READ_INPUT_ENABLED ( 1 )
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/*! \brief If the <em>Read Holding Registers</em> function should be enabled. */
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#define MB_FUNC_READ_HOLDING_ENABLED ( 1 )
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/*! \brief If the <em>Write Single Register</em> function should be enabled. */
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#define MB_FUNC_WRITE_HOLDING_ENABLED ( 1 )
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/*! \brief If the <em>Write Multiple registers</em> function should be enabled. */
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#define MB_FUNC_WRITE_MULTIPLE_HOLDING_ENABLED ( 1 )
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/*! \brief If the <em>Read Coils</em> function should be enabled. */
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#define MB_FUNC_READ_COILS_ENABLED ( 1 )
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/*! \brief If the <em>Write Coils</em> function should be enabled. */
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#define MB_FUNC_WRITE_COIL_ENABLED ( 1 )
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/*! \brief If the <em>Write Multiple Coils</em> function should be enabled. */
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#define MB_FUNC_WRITE_MULTIPLE_COILS_ENABLED ( 1 )
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/*! \brief If the <em>Read Discrete Inputs</em> function should be enabled. */
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#define MB_FUNC_READ_DISCRETE_INPUTS_ENABLED ( 1 )
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/*! \brief If the <em>Read/Write Multiple Registers</em> function should be enabled. */
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#define MB_FUNC_READWRITE_HOLDING_ENABLED ( 1 )
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/*! @} */
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#ifdef __cplusplus
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PR_END_EXTERN_C
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#endif
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#endif
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