mirror of
https://github.com/armink/FreeModbus_Slave-Master-RTT-STM32.git
synced 2025-01-23 06:07:11 +08:00
202 lines
8.8 KiB
C
202 lines
8.8 KiB
C
/*
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* FreeModbus Libary: A portable Modbus implementation for Modbus ASCII/RTU.
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* Copyright (C) 2013 Armink <armink.ztl@gmail.com>
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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: mbfuncholding_m.c,v 1.60 2013/09/02 14:13:40 Armink Add Master Functions Exp $
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*/
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/* ----------------------- System includes ----------------------------------*/
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#include "stdlib.h"
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#include "string.h"
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/* ----------------------- Platform includes --------------------------------*/
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#include "port.h"
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/* ----------------------- Modbus includes ----------------------------------*/
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#include "mb.h"
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#include "mb_m.h"
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#include "mbframe.h"
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#include "mbproto.h"
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#include "mbconfig.h"
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/* ----------------------- Defines ------------------------------------------*/
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#define MB_PDU_FUNC_READ_ADDR_OFF ( MB_PDU_DATA_OFF + 0)
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#define MB_PDU_FUNC_READ_REGCNT_OFF ( MB_PDU_DATA_OFF + 2 )
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#define MB_PDU_FUNC_READ_SIZE ( 4 )
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#define MB_PDU_FUNC_READ_REGCNT_MAX ( 0x007D )
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#define MB_PDU_FUNC_WRITE_ADDR_OFF ( MB_PDU_DATA_OFF + 0)
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#define MB_PDU_FUNC_WRITE_VALUE_OFF ( MB_PDU_DATA_OFF + 2 )
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#define MB_PDU_FUNC_WRITE_SIZE ( 4 )
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#define MB_PDU_FUNC_WRITE_MUL_ADDR_OFF ( MB_PDU_DATA_OFF + 0 )
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#define MB_PDU_FUNC_WRITE_MUL_REGCNT_OFF ( MB_PDU_DATA_OFF + 2 )
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#define MB_PDU_FUNC_WRITE_MUL_BYTECNT_OFF ( MB_PDU_DATA_OFF + 4 )
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#define MB_PDU_FUNC_WRITE_MUL_VALUES_OFF ( MB_PDU_DATA_OFF + 5 )
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#define MB_PDU_FUNC_WRITE_MUL_SIZE_MIN ( 5 )
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#define MB_PDU_FUNC_WRITE_MUL_REGCNT_MAX ( 0x0078 )
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#define MB_PDU_FUNC_READWRITE_READ_ADDR_OFF ( MB_PDU_DATA_OFF + 0 )
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#define MB_PDU_FUNC_READWRITE_READ_REGCNT_OFF ( MB_PDU_DATA_OFF + 2 )
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#define MB_PDU_FUNC_READWRITE_WRITE_ADDR_OFF ( MB_PDU_DATA_OFF + 4 )
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#define MB_PDU_FUNC_READWRITE_WRITE_REGCNT_OFF ( MB_PDU_DATA_OFF + 6 )
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#define MB_PDU_FUNC_READWRITE_BYTECNT_OFF ( MB_PDU_DATA_OFF + 8 )
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#define MB_PDU_FUNC_READWRITE_WRITE_VALUES_OFF ( MB_PDU_DATA_OFF + 9 )
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#define MB_PDU_FUNC_READWRITE_SIZE_MIN ( 9 )
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/* ----------------------- Static functions ---------------------------------*/
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/* ----------------------- Start implementation -----------------------------*/
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#if MB_MASTER_RTU_ENABLED > 0 || MB_MASTER_ASCII_ENABLED > 0
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#if MB_FUNC_WRITE_HOLDING_ENABLED > 0
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eMBMasterReqErrCode
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eMBMasterReqWriteHoldingRegister( UCHAR ucSndAddr, USHORT * pusDataBuffer, USHORT usRegAddr )
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{
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UCHAR *ucMBFrame;
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eMBMasterReqErrCode eErrStatus = MB_MRE_NO_ERR;
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if ( xMBMasterGetIsBusy() ) eErrStatus = MB_MRE_MASTER_BUSY;
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else if ( ucSndAddr > MB_MASTER_TOTAL_SLAVE_NUM ) eErrStatus = MB_MRE_ILL_ARG;
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else
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{
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vMBMasterGetPDUSndBuf(&ucMBFrame);
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vMBMasterSetDestAddress(ucSndAddr);
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ucMBFrame[MB_PDU_FUNC_OFF] = MB_FUNC_WRITE_REGISTER;
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ucMBFrame[MB_PDU_FUNC_WRITE_ADDR_OFF] = usRegAddr >> 8;
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ucMBFrame[MB_PDU_FUNC_WRITE_ADDR_OFF + 1] = usRegAddr;
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ucMBFrame[MB_PDU_FUNC_WRITE_VALUE_OFF] = pusDataBuffer[0] >> 8;
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ucMBFrame[MB_PDU_FUNC_WRITE_VALUE_OFF + 1] = pusDataBuffer[0] ;
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vMBMasterSetPDUSndLength( MB_PDU_SIZE_MIN + MB_PDU_FUNC_WRITE_SIZE );
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( void ) xMBMasterPortEventPost( EV_MASTER_FRAME_SENT );
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}
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return eErrStatus;
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}
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#endif
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#if MB_FUNC_WRITE_MULTIPLE_HOLDING_ENABLED > 0
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eMBMasterReqErrCode
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eMBMasterReqWriteMultipleHoldingRegister( UCHAR ucSndAddr,USHORT * pusDataBuffer, USHORT usRegAddr, USHORT usNRegs )
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{
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UCHAR *ucMBFrame;
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USHORT usRegIndex = 0;
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eMBMasterReqErrCode eErrStatus = MB_MRE_NO_ERR;
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if ( xMBMasterGetIsBusy() ) eErrStatus = MB_MRE_MASTER_BUSY;
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else if ( ucSndAddr > MB_MASTER_TOTAL_SLAVE_NUM ) eErrStatus = MB_MRE_ILL_ARG;
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else
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{
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vMBMasterGetPDUSndBuf(&ucMBFrame);
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vMBMasterSetDestAddress(ucSndAddr);
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ucMBFrame[MB_PDU_FUNC_OFF] = MB_FUNC_WRITE_MULTIPLE_REGISTERS;
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ucMBFrame[MB_PDU_FUNC_WRITE_MUL_ADDR_OFF] = usRegAddr >> 8;
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ucMBFrame[MB_PDU_FUNC_WRITE_MUL_ADDR_OFF + 1] = usRegAddr;
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ucMBFrame[MB_PDU_FUNC_WRITE_MUL_REGCNT_OFF] = usNRegs >> 8;
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ucMBFrame[MB_PDU_FUNC_WRITE_MUL_REGCNT_OFF + 1] = usNRegs ;
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ucMBFrame[MB_PDU_FUNC_WRITE_MUL_BYTECNT_OFF] = usNRegs * 2;
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ucMBFrame += MB_PDU_FUNC_WRITE_MUL_VALUES_OFF;
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while( usNRegs > usRegIndex)
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{
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*ucMBFrame++ = pusDataBuffer[usRegIndex] >> 8;
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*ucMBFrame++ = pusDataBuffer[usRegIndex++] ;
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}
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vMBMasterSetPDUSndLength( MB_PDU_SIZE_MIN + MB_PDU_FUNC_WRITE_MUL_SIZE_MIN + 2*usNRegs );
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( void ) xMBMasterPortEventPost( EV_MASTER_FRAME_SENT );
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}
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return eErrStatus;
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}
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#endif
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#if MB_FUNC_READ_HOLDING_ENABLED > 0
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eMBMasterReqErrCode
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eMBMasterReqReadHoldingRegister( UCHAR ucSndAddr, USHORT usRegAddr, USHORT usNRegs )
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{
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UCHAR *ucMBFrame;
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eMBMasterReqErrCode eErrStatus = MB_MRE_NO_ERR;
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if ( xMBMasterGetIsBusy() ) eErrStatus = MB_MRE_MASTER_BUSY;
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else if ( ucSndAddr > MB_MASTER_TOTAL_SLAVE_NUM ) eErrStatus = MB_MRE_ILL_ARG;
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else
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{
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vMBMasterGetPDUSndBuf(&ucMBFrame);
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vMBMasterSetDestAddress(ucSndAddr);
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ucMBFrame[MB_PDU_FUNC_OFF] = MB_FUNC_READ_HOLDING_REGISTER;
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ucMBFrame[MB_PDU_FUNC_READ_ADDR_OFF] = usRegAddr >> 8;
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ucMBFrame[MB_PDU_FUNC_READ_ADDR_OFF + 1] = usRegAddr;
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ucMBFrame[MB_PDU_FUNC_READ_REGCNT_OFF] = usNRegs >> 8;
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ucMBFrame[MB_PDU_FUNC_READ_REGCNT_OFF + 1] = usNRegs;
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vMBMasterSetPDUSndLength( MB_PDU_SIZE_MIN + MB_PDU_FUNC_READ_SIZE );
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( void ) xMBMasterPortEventPost( EV_MASTER_FRAME_SENT );
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}
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return eErrStatus;
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}
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#endif
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#if MB_FUNC_READWRITE_HOLDING_ENABLED > 0
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eMBMasterReqErrCode
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eMBMasterReqReadWriteMultipleHoldingRegister( UCHAR ucSndAddr,USHORT * pusDataBuffer, USHORT usReadRegAddr, USHORT usNReadRegs ,
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USHORT usWriteRegAddr, USHORT usNWriteRegs)
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{
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UCHAR *ucMBFrame;
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USHORT usRegIndex = 0;
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eMBMasterReqErrCode eErrStatus = MB_MRE_NO_ERR;
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if ( xMBMasterGetIsBusy() ) eErrStatus = MB_MRE_MASTER_BUSY;
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else if ( ucSndAddr > MB_MASTER_TOTAL_SLAVE_NUM ) eErrStatus = MB_MRE_ILL_ARG;
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else
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{
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vMBMasterGetPDUSndBuf(&ucMBFrame);
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vMBMasterSetDestAddress(ucSndAddr);
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ucMBFrame[MB_PDU_FUNC_OFF] = MB_FUNC_READWRITE_MULTIPLE_REGISTERS;
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ucMBFrame[MB_PDU_FUNC_READWRITE_READ_ADDR_OFF] = usReadRegAddr >> 8;
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ucMBFrame[MB_PDU_FUNC_READWRITE_READ_ADDR_OFF + 1] = usReadRegAddr;
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ucMBFrame[MB_PDU_FUNC_READWRITE_READ_REGCNT_OFF] = usNReadRegs >> 8;
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ucMBFrame[MB_PDU_FUNC_READWRITE_READ_REGCNT_OFF + 1] = usNReadRegs ;
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ucMBFrame[MB_PDU_FUNC_READWRITE_WRITE_ADDR_OFF] = usWriteRegAddr >> 8;
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ucMBFrame[MB_PDU_FUNC_READWRITE_WRITE_ADDR_OFF + 1] = usWriteRegAddr;
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ucMBFrame[MB_PDU_FUNC_READWRITE_WRITE_REGCNT_OFF] = usNWriteRegs >> 8;
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ucMBFrame[MB_PDU_FUNC_READWRITE_WRITE_REGCNT_OFF + 1] = usNWriteRegs ;
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ucMBFrame[MB_PDU_FUNC_READWRITE_BYTECNT_OFF] = usNWriteRegs * 2;
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ucMBFrame += MB_PDU_FUNC_READWRITE_WRITE_VALUES_OFF;
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while( usNWriteRegs > usRegIndex)
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{
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*ucMBFrame++ = pusDataBuffer[usRegIndex] >> 8;
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*ucMBFrame++ = pusDataBuffer[usRegIndex++] ;
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}
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vMBMasterSetPDUSndLength( MB_PDU_SIZE_MIN + MB_PDU_FUNC_READWRITE_SIZE_MIN + 2*usNWriteRegs );
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( void ) xMBMasterPortEventPost( EV_MASTER_FRAME_SENT );
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}
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return eErrStatus;
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}
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#endif
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#endif
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