Daniel McKinnell / Modbus-Slave

Forking https://os.mbed.com/users/cam/code/Modbus/ to work for NUCLEO 64 boards

Fork of Cam's original FreeModbus port (https://os.mbed.com/users/cam/code/Modbus/)

Change: - Serial implementation to work for NUCLEO 64 boards and receive interrupts instead of timer. (see `portserial.cpp`)

Added: - Custom RTU mode. Allows for external implementation of packet receiving and sending. Sends and receives packets as whole frames (address + PDU) (i.e. this was added for a custom LoRa implementation). implement `xMBRTUCustGetPDU` and `xMBRTUCustSendResponse` (see `mbport.h`) and call `eMBRTUCustomInit( address )`. implementations need to be fully initialised as `eMBRTUCustomInit` only sets the address and nothing else.

mbfuncother.cpp@4:7621103c5a40, 2020-08-04 (annotated)

Committer:
danielmckinnell
Date:
Tue Aug 04 04:42:52 2020 +0000
Revision:
4:7621103c5a40
Parent:
0:0453a0a7e500 
RTU Serial updates

Who changed what in which revision?

UserRevisionLine numberNew contents of line
cam 0:0453a0a7e500 1 /*
cam 0:0453a0a7e500 2 * FreeModbus Libary: A portable Modbus implementation for Modbus ASCII/RTU.
cam 0:0453a0a7e500 3 * Copyright (c) 2006 Christian Walter <wolti@sil.at>
cam 0:0453a0a7e500 4 * All rights reserved.
cam 0:0453a0a7e500 5 *
cam 0:0453a0a7e500 6 * Redistribution and use in source and binary forms, with or without
cam 0:0453a0a7e500 7 * modification, are permitted provided that the following conditions
cam 0:0453a0a7e500 8 * are met:
cam 0:0453a0a7e500 9 * 1. Redistributions of source code must retain the above copyright
cam 0:0453a0a7e500 10 * notice, this list of conditions and the following disclaimer.
cam 0:0453a0a7e500 11 * 2. Redistributions in binary form must reproduce the above copyright
cam 0:0453a0a7e500 12 * notice, this list of conditions and the following disclaimer in the
cam 0:0453a0a7e500 13 * documentation and/or other materials provided with the distribution.
cam 0:0453a0a7e500 14 * 3. The name of the author may not be used to endorse or promote products
cam 0:0453a0a7e500 15 * derived from this software without specific prior written permission.
cam 0:0453a0a7e500 16 *
cam 0:0453a0a7e500 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
cam 0:0453a0a7e500 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
cam 0:0453a0a7e500 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
cam 0:0453a0a7e500 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
cam 0:0453a0a7e500 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
cam 0:0453a0a7e500 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
cam 0:0453a0a7e500 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
cam 0:0453a0a7e500 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
cam 0:0453a0a7e500 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
cam 0:0453a0a7e500 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
cam 0:0453a0a7e500 27 *
cam 0:0453a0a7e500 28 * File: $Id: mbfuncother.c,v 1.8 2006/12/07 22:10:34 wolti Exp $
cam 0:0453a0a7e500 29 */
cam 0:0453a0a7e500 30
cam 0:0453a0a7e500 31 /* ----------------------- System includes ----------------------------------*/
cam 0:0453a0a7e500 32 #include "stdlib.h"
cam 0:0453a0a7e500 33 #include "string.h"
cam 0:0453a0a7e500 34
cam 0:0453a0a7e500 35 /* ----------------------- Platform includes --------------------------------*/
cam 0:0453a0a7e500 36 #include "port.h"
cam 0:0453a0a7e500 37
cam 0:0453a0a7e500 38 /* ----------------------- Modbus includes ----------------------------------*/
cam 0:0453a0a7e500 39 #include "mb.h"
cam 0:0453a0a7e500 40 #include "mbframe.h"
cam 0:0453a0a7e500 41 #include "mbproto.h"
cam 0:0453a0a7e500 42 #include "mbconfig.h"
cam 0:0453a0a7e500 43
cam 0:0453a0a7e500 44 #if MB_FUNC_OTHER_REP_SLAVEID_ENABLED > 0
cam 0:0453a0a7e500 45
cam 0:0453a0a7e500 46 /* ----------------------- Static variables ---------------------------------*/
cam 0:0453a0a7e500 47 static UCHAR ucMBSlaveID[MB_FUNC_OTHER_REP_SLAVEID_BUF];
cam 0:0453a0a7e500 48 static USHORT usMBSlaveIDLen;
cam 0:0453a0a7e500 49
cam 0:0453a0a7e500 50 /* ----------------------- Start implementation -----------------------------*/
cam 0:0453a0a7e500 51
cam 0:0453a0a7e500 52 eMBErrorCode
cam 0:0453a0a7e500 53 eMBSetSlaveID( UCHAR ucSlaveID, BOOL xIsRunning,
cam 0:0453a0a7e500 54 UCHAR const *pucAdditional, USHORT usAdditionalLen )
cam 0:0453a0a7e500 55 {
cam 0:0453a0a7e500 56 eMBErrorCode eStatus = MB_ENOERR;
cam 0:0453a0a7e500 57
cam 0:0453a0a7e500 58 /* the first byte and second byte in the buffer is reserved for
cam 0:0453a0a7e500 59 * the parameter ucSlaveID and the running flag. The rest of
cam 0:0453a0a7e500 60 * the buffer is available for additional data. */
cam 0:0453a0a7e500 61 if( usAdditionalLen + 2 < MB_FUNC_OTHER_REP_SLAVEID_BUF )
cam 0:0453a0a7e500 62 {
cam 0:0453a0a7e500 63 usMBSlaveIDLen = 0;
cam 0:0453a0a7e500 64 ucMBSlaveID[usMBSlaveIDLen++] = ucSlaveID;
cam 0:0453a0a7e500 65 ucMBSlaveID[usMBSlaveIDLen++] = ( UCHAR )( xIsRunning ? 0xFF : 0x00 );
cam 0:0453a0a7e500 66 if( usAdditionalLen > 0 )
cam 0:0453a0a7e500 67 {
cam 0:0453a0a7e500 68 memcpy( &ucMBSlaveID[usMBSlaveIDLen], pucAdditional,
cam 0:0453a0a7e500 69 ( size_t )usAdditionalLen );
cam 0:0453a0a7e500 70 usMBSlaveIDLen += usAdditionalLen;
cam 0:0453a0a7e500 71 }
cam 0:0453a0a7e500 72 }
cam 0:0453a0a7e500 73 else
cam 0:0453a0a7e500 74 {
cam 0:0453a0a7e500 75 eStatus = MB_ENORES;
cam 0:0453a0a7e500 76 }
cam 0:0453a0a7e500 77 return eStatus;
cam 0:0453a0a7e500 78 }
cam 0:0453a0a7e500 79
cam 0:0453a0a7e500 80 eMBException
cam 0:0453a0a7e500 81 eMBFuncReportSlaveID( UCHAR * pucFrame, USHORT * usLen )
cam 0:0453a0a7e500 82 {
cam 0:0453a0a7e500 83 memcpy( &pucFrame[MB_PDU_DATA_OFF], &ucMBSlaveID[0], ( size_t )usMBSlaveIDLen );
cam 0:0453a0a7e500 84 *usLen = ( USHORT )( MB_PDU_DATA_OFF + usMBSlaveIDLen );
cam 0:0453a0a7e500 85 return MB_EX_NONE;
cam 0:0453a0a7e500 86 }
cam 0:0453a0a7e500 87
cam 0:0453a0a7e500 88 #endif