568 lines
20 KiB
C
568 lines
20 KiB
C
/****************************************************************************
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* apps/modbus/functions/mbfuncholding_m.c
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*
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* FreeModbus Library: 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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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdlib.h>
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#include <string.h>
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#include "port.h"
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#include <apps/modbus/mb.h>
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#include <apps/modbus/mb_m.h>
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#include <apps/modbus/mbframe.h>
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#include <apps/modbus/mbproto.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define MB_PDU_REQ_READ_ADDR_OFF (MB_PDU_DATA_OFF + 0)
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#define MB_PDU_REQ_READ_REGCNT_OFF (MB_PDU_DATA_OFF + 2)
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#define MB_PDU_REQ_READ_SIZE (4)
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#define MB_PDU_FUNC_READ_REGCNT_MAX (0x007D)
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#define MB_PDU_FUNC_READ_BYTECNT_OFF (MB_PDU_DATA_OFF + 0)
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#define MB_PDU_FUNC_READ_VALUES_OFF (MB_PDU_DATA_OFF + 1)
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#define MB_PDU_FUNC_READ_SIZE_MIN (1)
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#define MB_PDU_REQ_WRITE_ADDR_OFF (MB_PDU_DATA_OFF + 0)
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#define MB_PDU_REQ_WRITE_VALUE_OFF (MB_PDU_DATA_OFF + 2)
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#define MB_PDU_REQ_WRITE_SIZE (4)
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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_REQ_WRITE_MUL_ADDR_OFF (MB_PDU_DATA_OFF + 0)
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#define MB_PDU_REQ_WRITE_MUL_REGCNT_OFF (MB_PDU_DATA_OFF + 2)
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#define MB_PDU_REQ_WRITE_MUL_BYTECNT_OFF (MB_PDU_DATA_OFF + 4)
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#define MB_PDU_REQ_WRITE_MUL_VALUES_OFF (MB_PDU_DATA_OFF + 5)
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#define MB_PDU_REQ_WRITE_MUL_SIZE_MIN (5)
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#define MB_PDU_REQ_WRITE_MUL_REGCNT_MAX (0x0078)
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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_SIZE (4)
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#define MB_PDU_REQ_READWRITE_READ_ADDR_OFF (MB_PDU_DATA_OFF + 0)
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#define MB_PDU_REQ_READWRITE_READ_REGCNT_OFF (MB_PDU_DATA_OFF + 2)
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#define MB_PDU_REQ_READWRITE_WRITE_ADDR_OFF (MB_PDU_DATA_OFF + 4)
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#define MB_PDU_REQ_READWRITE_WRITE_REGCNT_OFF (MB_PDU_DATA_OFF + 6)
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#define MB_PDU_REQ_READWRITE_WRITE_BYTECNT_OFF (MB_PDU_DATA_OFF + 8)
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#define MB_PDU_REQ_READWRITE_WRITE_VALUES_OFF (MB_PDU_DATA_OFF + 9)
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#define MB_PDU_REQ_READWRITE_SIZE_MIN (9)
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#define MB_PDU_FUNC_READWRITE_READ_BYTECNT_OFF (MB_PDU_DATA_OFF + 0)
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#define MB_PDU_FUNC_READWRITE_READ_VALUES_OFF (MB_PDU_DATA_OFF + 1)
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#define MB_PDU_FUNC_READWRITE_SIZE_MIN (1)
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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eMBException prveMBError2Exception(eMBErrorCode eErrorCode);
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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#if defined(CONFIG_RTU_ASCII_MASTER) || defined(CONFIG_MB_ASCII_MASTER)
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/****************************************************************************
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* Description:
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* This function will request write holding register.
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*
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* Input Parameters:
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* ucSndAddr salve address
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* usRegAddr register start address
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* usRegData register data to be written
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* lTimeOut timeout (-1 will waiting forever)
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*
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* Returned Value:
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* error code
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*
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****************************************************************************/
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#ifdef CONFIG_MB_FUNC_WRITE_HOLDING_ENABLED
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eMBMasterReqErrCode eMBMasterReqWriteHoldingRegister(uint8_t ucSndAddr,
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uint16_t usRegAddr,
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uint16_t usRegData,
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uint32_t lTimeOut)
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{
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uint8_t *ucMBFrame;
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eMBMasterReqErrCode eErrStatus = MB_MRE_NO_ERR;
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if (ucSndAddr > CONFIG_MB_MASTER_TOTAL_SLAVE_NUM)
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{
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eErrStatus = MB_MRE_ILL_ARG;
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}
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else if (xMBMasterRunResTake(lTimeOut) == false)
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{
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eErrStatus = MB_MRE_MASTER_BUSY;
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}
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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_REQ_WRITE_ADDR_OFF] = usRegAddr >> 8;
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ucMBFrame[MB_PDU_REQ_WRITE_ADDR_OFF + 1] = usRegAddr;
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ucMBFrame[MB_PDU_REQ_WRITE_VALUE_OFF] = usRegData >> 8;
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ucMBFrame[MB_PDU_REQ_WRITE_VALUE_OFF + 1] = usRegData;
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vMBMasterSetPDUSndLength(MB_PDU_SIZE_MIN + MB_PDU_REQ_WRITE_SIZE);
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(void)xMBMasterPortEventPost(EV_MASTER_FRAME_SENT);
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eErrStatus = eMBMasterWaitRequestFinish();
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}
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return eErrStatus;
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}
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eMBException eMBMasterFuncWriteHoldingRegister(uint8_t *pucFrame,
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uint16_t *usLen)
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{
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uint16_t usRegAddress;
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eMBException eStatus = MB_EX_NONE;
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eMBErrorCode eRegStatus;
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if (*usLen == (MB_PDU_SIZE_MIN + MB_PDU_FUNC_WRITE_SIZE))
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{
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usRegAddress = (uint16_t) (pucFrame[MB_PDU_FUNC_WRITE_ADDR_OFF] << 8);
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usRegAddress |= (uint16_t) (pucFrame[MB_PDU_FUNC_WRITE_ADDR_OFF + 1]);
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usRegAddress++;
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/* Make callback to update the value. */
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eRegStatus = eMBMasterRegHoldingCB(&pucFrame[MB_PDU_FUNC_WRITE_VALUE_OFF],
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usRegAddress, 1, MB_REG_WRITE);
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/* If an error occured convert it into a Modbus exception. */
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if (eRegStatus != MB_ENOERR)
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{
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eStatus = prveMBError2Exception(eRegStatus);
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}
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}
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else
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{
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/* Can't be a valid request because the length is incorrect. */
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eStatus = MB_EX_ILLEGAL_DATA_VALUE;
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}
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return eStatus;
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}
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#endif
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/****************************************************************************
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* This function will request write multiple holding register.
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*
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* Input Parameters:
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* ucSndAddr salve address
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* usRegAddr register start address
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* usNRegs register total number
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* pusDataBuffer data to be written
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* lTimeOut timeout (-1 will waiting forever)
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*
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* Returned Value:
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* error code
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*
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****************************************************************************/
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#ifdef CONFIG_MB_FUNC_WRITE_MULTIPLE_HOLDING_ENABLED
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eMBMasterReqErrCode
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eMBMasterReqWriteMultipleHoldingRegister(uint8_t ucSndAddr,
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uint16_t usRegAddr,
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uint16_t usNRegs,
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uint16_t *pusDataBuffer,
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uint32_t lTimeOut)
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{
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uint8_t *ucMBFrame;
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uint16_t usRegIndex = 0;
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eMBMasterReqErrCode eErrStatus = MB_MRE_NO_ERR;
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if (ucSndAddr > CONFIG_MB_MASTER_TOTAL_SLAVE_NUM)
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{
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eErrStatus = MB_MRE_ILL_ARG;
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}
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else if (xMBMasterRunResTake(lTimeOut) == false)
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{
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eErrStatus = MB_MRE_MASTER_BUSY;
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}
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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_REQ_WRITE_MUL_ADDR_OFF] = usRegAddr >> 8;
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ucMBFrame[MB_PDU_REQ_WRITE_MUL_ADDR_OFF + 1] = usRegAddr;
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ucMBFrame[MB_PDU_REQ_WRITE_MUL_REGCNT_OFF] = usNRegs >> 8;
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ucMBFrame[MB_PDU_REQ_WRITE_MUL_REGCNT_OFF + 1] = usNRegs;
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ucMBFrame[MB_PDU_REQ_WRITE_MUL_BYTECNT_OFF] = usNRegs * 2;
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ucMBFrame += MB_PDU_REQ_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_REQ_WRITE_MUL_SIZE_MIN +
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2 * usNRegs);
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(void)xMBMasterPortEventPost(EV_MASTER_FRAME_SENT);
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eErrStatus = eMBMasterWaitRequestFinish();
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}
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return eErrStatus;
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}
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eMBException eMBMasterFuncWriteMultipleHoldingRegister(uint8_t *pucFrame,
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uint16_t *usLen)
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{
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uint8_t *ucMBFrame;
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uint16_t usRegAddress;
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uint16_t usRegCount;
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uint8_t ucRegByteCount;
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eMBException eStatus = MB_EX_NONE;
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eMBErrorCode eRegStatus;
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/* If this request is broadcast, the *usLen is not need check. */
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if ((*usLen == MB_PDU_SIZE_MIN + MB_PDU_FUNC_WRITE_MUL_SIZE) ||
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xMBMasterRequestIsBroadcast())
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{
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vMBMasterGetPDUSndBuf(&ucMBFrame);
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usRegAddress = (uint16_t) (ucMBFrame[MB_PDU_REQ_WRITE_MUL_ADDR_OFF] << 8);
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usRegAddress |= (uint16_t) (ucMBFrame[MB_PDU_REQ_WRITE_MUL_ADDR_OFF + 1]);
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usRegAddress++;
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usRegCount = (uint16_t) (ucMBFrame[MB_PDU_REQ_WRITE_MUL_REGCNT_OFF] << 8);
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usRegCount |= (uint16_t) (ucMBFrame[MB_PDU_REQ_WRITE_MUL_REGCNT_OFF + 1]);
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ucRegByteCount = ucMBFrame[MB_PDU_REQ_WRITE_MUL_BYTECNT_OFF];
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if (ucRegByteCount == 2 * usRegCount)
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{
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/* Make callback to update the register values. */
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eRegStatus =
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eMBMasterRegHoldingCB(&ucMBFrame[MB_PDU_REQ_WRITE_MUL_VALUES_OFF],
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usRegAddress, usRegCount, MB_REG_WRITE);
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/* If an error occured convert it into a Modbus exception. */
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if (eRegStatus != MB_ENOERR)
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{
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eStatus = prveMBError2Exception(eRegStatus);
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}
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}
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else
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{
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eStatus = MB_EX_ILLEGAL_DATA_VALUE;
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}
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}
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else
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{
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/* Can't be a valid request because the length is incorrect. */
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eStatus = MB_EX_ILLEGAL_DATA_VALUE;
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}
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return eStatus;
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}
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#endif
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/****************************************************************************
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* This function will request read holding register.
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*
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* Input Parameters:
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* ucSndAddr salve address
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* usRegAddr register start address
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* usNRegs register total number
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* lTimeOut timeout (-1 will waiting forever)
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*
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* Returned Value:
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* error code
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*
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****************************************************************************/
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#ifdef CONFIG_MB_FUNC_READ_HOLDING_ENABLED
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eMBMasterReqErrCode eMBMasterReqReadHoldingRegister(uint8_t ucSndAddr,
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uint16_t usRegAddr,
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uint16_t usNRegs,
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uint32_t lTimeOut)
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{
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uint8_t *ucMBFrame;
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eMBMasterReqErrCode eErrStatus = MB_MRE_NO_ERR;
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if (ucSndAddr > CONFIG_MB_MASTER_TOTAL_SLAVE_NUM)
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{
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eErrStatus = MB_MRE_ILL_ARG;
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}
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else if (xMBMasterRunResTake(lTimeOut) == false)
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{
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eErrStatus = MB_MRE_MASTER_BUSY;
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}
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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_REQ_READ_ADDR_OFF] = usRegAddr >> 8;
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ucMBFrame[MB_PDU_REQ_READ_ADDR_OFF + 1] = usRegAddr;
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ucMBFrame[MB_PDU_REQ_READ_REGCNT_OFF] = usNRegs >> 8;
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ucMBFrame[MB_PDU_REQ_READ_REGCNT_OFF + 1] = usNRegs;
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vMBMasterSetPDUSndLength(MB_PDU_SIZE_MIN + MB_PDU_REQ_READ_SIZE);
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(void)xMBMasterPortEventPost(EV_MASTER_FRAME_SENT);
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eErrStatus = eMBMasterWaitRequestFinish();
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}
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return eErrStatus;
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}
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eMBException eMBMasterFuncReadHoldingRegister(uint8_t *pucFrame,
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uint16_t *usLen)
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{
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uint8_t *ucMBFrame;
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uint16_t usRegAddress;
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uint16_t usRegCount;
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eMBException eStatus = MB_EX_NONE;
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eMBErrorCode eRegStatus;
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/* If this request is broadcast, and it's read mode. This request don't need
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* execute.
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*/
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if (xMBMasterRequestIsBroadcast())
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{
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eStatus = MB_EX_NONE;
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}
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else if (*usLen >= MB_PDU_SIZE_MIN + MB_PDU_FUNC_READ_SIZE_MIN)
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{
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vMBMasterGetPDUSndBuf(&ucMBFrame);
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usRegAddress = (uint16_t) (ucMBFrame[MB_PDU_REQ_READ_ADDR_OFF] << 8);
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usRegAddress |= (uint16_t) (ucMBFrame[MB_PDU_REQ_READ_ADDR_OFF + 1]);
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usRegAddress++;
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usRegCount = (uint16_t) (ucMBFrame[MB_PDU_REQ_READ_REGCNT_OFF] << 8);
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usRegCount |= (uint16_t) (ucMBFrame[MB_PDU_REQ_READ_REGCNT_OFF + 1]);
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/* Check if the number of registers to read is valid. If not return
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* Modbus illegal data value exception.
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*/
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if ((usRegCount >= 1) &&
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(2 * usRegCount == pucFrame[MB_PDU_FUNC_READ_BYTECNT_OFF]))
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{
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/* Make callback to fill the buffer. */
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eRegStatus =
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eMBMasterRegHoldingCB(&pucFrame[MB_PDU_FUNC_READ_VALUES_OFF],
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usRegAddress, usRegCount, MB_REG_READ);
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/* If an error occurred convert it into a Modbus exception. */
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if (eRegStatus != MB_ENOERR)
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{
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eStatus = prveMBError2Exception(eRegStatus);
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}
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}
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else
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{
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eStatus = MB_EX_ILLEGAL_DATA_VALUE;
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}
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}
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else
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{
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/* Can't be a valid request because the length is incorrect. */
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eStatus = MB_EX_ILLEGAL_DATA_VALUE;
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}
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return eStatus;
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}
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#endif
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/****************************************************************************
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* Description:
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* This function will request read and write holding register.
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*
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* Input Parameters:
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* ucSndAddr salve address
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* usReadRegAddr read register start address
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* usNReadRegs read register total number
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* pusDataBuffer data to be written
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* usWriteRegAddr write register start address
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* usNWriteRegs write register total number
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* lTimeOut timeout (-1 will waiting forever)
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*
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* Returned Value:
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* error code
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*
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****************************************************************************/
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#ifdef CONFIG_MB_FUNC_READWRITE_HOLDING_ENABLED
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eMBMasterReqErrCode
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eMBMasterReqReadWriteMultipleHoldingRegister(uint8_t ucSndAddr,
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uint16_t usReadRegAddr,
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uint16_t usNReadRegs,
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uint16_t *pusDataBuffer,
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uint16_t usWriteRegAddr,
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uint16_t usNWriteRegs,
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uint32_t lTimeOut)
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{
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uint8_t *ucMBFrame;
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uint16_t usRegIndex = 0;
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eMBMasterReqErrCode eErrStatus = MB_MRE_NO_ERR;
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if (ucSndAddr > CONFIG_MB_MASTER_TOTAL_SLAVE_NUM)
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{
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eErrStatus = MB_MRE_ILL_ARG;
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}
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else if (xMBMasterRunResTake(lTimeOut) == false)
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{
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eErrStatus = MB_MRE_MASTER_BUSY;
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}
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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_REQ_READWRITE_READ_ADDR_OFF] = usReadRegAddr >> 8;
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ucMBFrame[MB_PDU_REQ_READWRITE_READ_ADDR_OFF + 1] = usReadRegAddr;
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ucMBFrame[MB_PDU_REQ_READWRITE_READ_REGCNT_OFF] = usNReadRegs >> 8;
|
|
ucMBFrame[MB_PDU_REQ_READWRITE_READ_REGCNT_OFF + 1] = usNReadRegs;
|
|
ucMBFrame[MB_PDU_REQ_READWRITE_WRITE_ADDR_OFF] = usWriteRegAddr >> 8;
|
|
ucMBFrame[MB_PDU_REQ_READWRITE_WRITE_ADDR_OFF + 1] = usWriteRegAddr;
|
|
ucMBFrame[MB_PDU_REQ_READWRITE_WRITE_REGCNT_OFF] = usNWriteRegs >> 8;
|
|
ucMBFrame[MB_PDU_REQ_READWRITE_WRITE_REGCNT_OFF + 1] = usNWriteRegs;
|
|
ucMBFrame[MB_PDU_REQ_READWRITE_WRITE_BYTECNT_OFF] = usNWriteRegs * 2;
|
|
ucMBFrame += MB_PDU_REQ_READWRITE_WRITE_VALUES_OFF;
|
|
|
|
while (usNWriteRegs > usRegIndex)
|
|
{
|
|
*ucMBFrame++ = pusDataBuffer[usRegIndex] >> 8;
|
|
*ucMBFrame++ = pusDataBuffer[usRegIndex++];
|
|
}
|
|
|
|
vMBMasterSetPDUSndLength(MB_PDU_SIZE_MIN + MB_PDU_REQ_READWRITE_SIZE_MIN +
|
|
2 * usNWriteRegs);
|
|
(void)xMBMasterPortEventPost(EV_MASTER_FRAME_SENT);
|
|
eErrStatus = eMBMasterWaitRequestFinish();
|
|
}
|
|
|
|
return eErrStatus;
|
|
}
|
|
|
|
eMBException eMBMasterFuncReadWriteMultipleHoldingRegister(uint8_t *pucFrame,
|
|
uint16_t *usLen)
|
|
{
|
|
uint16_t usRegReadAddress;
|
|
uint16_t usRegReadCount;
|
|
uint16_t usRegWriteAddress;
|
|
uint16_t usRegWriteCount;
|
|
uint8_t *ucMBFrame;
|
|
|
|
eMBException eStatus = MB_EX_NONE;
|
|
eMBErrorCode eRegStatus;
|
|
|
|
/* If this request is broadcast, and it's read mode. This request don't need
|
|
* execute.
|
|
*/
|
|
|
|
if (xMBMasterRequestIsBroadcast())
|
|
{
|
|
eStatus = MB_EX_NONE;
|
|
}
|
|
else if (*usLen >= MB_PDU_SIZE_MIN + MB_PDU_FUNC_READWRITE_SIZE_MIN)
|
|
{
|
|
vMBMasterGetPDUSndBuf(&ucMBFrame);
|
|
usRegReadAddress =
|
|
(uint16_t) (ucMBFrame[MB_PDU_REQ_READWRITE_READ_ADDR_OFF] << 8U);
|
|
usRegReadAddress |=
|
|
(uint16_t) (ucMBFrame[MB_PDU_REQ_READWRITE_READ_ADDR_OFF + 1]);
|
|
usRegReadAddress++;
|
|
|
|
usRegReadCount =
|
|
(uint16_t) (ucMBFrame[MB_PDU_REQ_READWRITE_READ_REGCNT_OFF] << 8U);
|
|
usRegReadCount |=
|
|
(uint16_t) (ucMBFrame[MB_PDU_REQ_READWRITE_READ_REGCNT_OFF + 1]);
|
|
|
|
usRegWriteAddress =
|
|
(uint16_t) (ucMBFrame[MB_PDU_REQ_READWRITE_WRITE_ADDR_OFF] << 8U);
|
|
usRegWriteAddress |=
|
|
(uint16_t) (ucMBFrame[MB_PDU_REQ_READWRITE_WRITE_ADDR_OFF + 1]);
|
|
usRegWriteAddress++;
|
|
|
|
usRegWriteCount =
|
|
(uint16_t) (ucMBFrame[MB_PDU_REQ_READWRITE_WRITE_REGCNT_OFF] << 8U);
|
|
usRegWriteCount |=
|
|
(uint16_t) (ucMBFrame[MB_PDU_REQ_READWRITE_WRITE_REGCNT_OFF + 1]);
|
|
|
|
if ((2 * usRegReadCount) ==
|
|
pucFrame[MB_PDU_FUNC_READWRITE_READ_BYTECNT_OFF])
|
|
{
|
|
/* Make callback to update the register values. */
|
|
|
|
eRegStatus =
|
|
eMBMasterRegHoldingCB(&ucMBFrame
|
|
[MB_PDU_REQ_READWRITE_WRITE_VALUES_OFF],
|
|
usRegWriteAddress, usRegWriteCount,
|
|
MB_REG_WRITE);
|
|
|
|
if (eRegStatus == MB_ENOERR)
|
|
{
|
|
/* Make the read callback. */
|
|
|
|
eRegStatus =
|
|
eMBMasterRegHoldingCB(&pucFrame
|
|
[MB_PDU_FUNC_READWRITE_READ_VALUES_OFF],
|
|
usRegReadAddress, usRegReadCount,
|
|
MB_REG_READ);
|
|
}
|
|
|
|
if (eRegStatus != MB_ENOERR)
|
|
{
|
|
eStatus = prveMBError2Exception(eRegStatus);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
eStatus = MB_EX_ILLEGAL_DATA_VALUE;
|
|
}
|
|
}
|
|
|
|
return eStatus;
|
|
}
|
|
|
|
#endif
|
|
#endif
|