568 lines
20 KiB
C
568 lines
20 KiB
C
/****************************************************************************
|
|
* apps/modbus/functions/mbfuncholding_m.c
|
|
*
|
|
* FreeModbus Library: A portable Modbus implementation for Modbus ASCII/RTU.
|
|
* Copyright (C) 2013 Armink <armink.ztl@gmail.com>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "port.h"
|
|
|
|
#include "modbus/mb.h"
|
|
#include "modbus/mb_m.h"
|
|
#include "modbus/mbframe.h"
|
|
#include "modbus/mbproto.h"
|
|
|
|
/****************************************************************************
|
|
* Pre-processor Definitions
|
|
****************************************************************************/
|
|
|
|
#define MB_PDU_REQ_READ_ADDR_OFF (MB_PDU_DATA_OFF + 0)
|
|
#define MB_PDU_REQ_READ_REGCNT_OFF (MB_PDU_DATA_OFF + 2)
|
|
#define MB_PDU_REQ_READ_SIZE (4)
|
|
#define MB_PDU_FUNC_READ_REGCNT_MAX (0x007D)
|
|
#define MB_PDU_FUNC_READ_BYTECNT_OFF (MB_PDU_DATA_OFF + 0)
|
|
#define MB_PDU_FUNC_READ_VALUES_OFF (MB_PDU_DATA_OFF + 1)
|
|
#define MB_PDU_FUNC_READ_SIZE_MIN (1)
|
|
|
|
#define MB_PDU_REQ_WRITE_ADDR_OFF (MB_PDU_DATA_OFF + 0)
|
|
#define MB_PDU_REQ_WRITE_VALUE_OFF (MB_PDU_DATA_OFF + 2)
|
|
#define MB_PDU_REQ_WRITE_SIZE (4)
|
|
#define MB_PDU_FUNC_WRITE_ADDR_OFF (MB_PDU_DATA_OFF + 0)
|
|
#define MB_PDU_FUNC_WRITE_VALUE_OFF (MB_PDU_DATA_OFF + 2)
|
|
#define MB_PDU_FUNC_WRITE_SIZE (4)
|
|
|
|
#define MB_PDU_REQ_WRITE_MUL_ADDR_OFF (MB_PDU_DATA_OFF + 0)
|
|
#define MB_PDU_REQ_WRITE_MUL_REGCNT_OFF (MB_PDU_DATA_OFF + 2)
|
|
#define MB_PDU_REQ_WRITE_MUL_BYTECNT_OFF (MB_PDU_DATA_OFF + 4)
|
|
#define MB_PDU_REQ_WRITE_MUL_VALUES_OFF (MB_PDU_DATA_OFF + 5)
|
|
#define MB_PDU_REQ_WRITE_MUL_SIZE_MIN (5)
|
|
#define MB_PDU_REQ_WRITE_MUL_REGCNT_MAX (0x0078)
|
|
#define MB_PDU_FUNC_WRITE_MUL_ADDR_OFF (MB_PDU_DATA_OFF + 0)
|
|
#define MB_PDU_FUNC_WRITE_MUL_REGCNT_OFF (MB_PDU_DATA_OFF + 2)
|
|
#define MB_PDU_FUNC_WRITE_MUL_SIZE (4)
|
|
|
|
#define MB_PDU_REQ_READWRITE_READ_ADDR_OFF (MB_PDU_DATA_OFF + 0)
|
|
#define MB_PDU_REQ_READWRITE_READ_REGCNT_OFF (MB_PDU_DATA_OFF + 2)
|
|
#define MB_PDU_REQ_READWRITE_WRITE_ADDR_OFF (MB_PDU_DATA_OFF + 4)
|
|
#define MB_PDU_REQ_READWRITE_WRITE_REGCNT_OFF (MB_PDU_DATA_OFF + 6)
|
|
#define MB_PDU_REQ_READWRITE_WRITE_BYTECNT_OFF (MB_PDU_DATA_OFF + 8)
|
|
#define MB_PDU_REQ_READWRITE_WRITE_VALUES_OFF (MB_PDU_DATA_OFF + 9)
|
|
#define MB_PDU_REQ_READWRITE_SIZE_MIN (9)
|
|
#define MB_PDU_FUNC_READWRITE_READ_BYTECNT_OFF (MB_PDU_DATA_OFF + 0)
|
|
#define MB_PDU_FUNC_READWRITE_READ_VALUES_OFF (MB_PDU_DATA_OFF + 1)
|
|
#define MB_PDU_FUNC_READWRITE_SIZE_MIN (1)
|
|
|
|
/****************************************************************************
|
|
* Public Function Prototypes
|
|
****************************************************************************/
|
|
|
|
eMBException prveMBError2Exception(eMBErrorCode eErrorCode);
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
#if defined(CONFIG_RTU_ASCII_MASTER) || defined(CONFIG_MB_ASCII_MASTER)
|
|
|
|
/****************************************************************************
|
|
* Description:
|
|
* This function will request write holding register.
|
|
*
|
|
* Input Parameters:
|
|
* ucSndAddr salve address
|
|
* usRegAddr register start address
|
|
* usRegData register data to be written
|
|
* lTimeOut timeout (-1 will waiting forever)
|
|
*
|
|
* Returned Value:
|
|
* error code
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_MB_FUNC_WRITE_HOLDING_ENABLED
|
|
eMBMasterReqErrCode eMBMasterReqWriteHoldingRegister(uint8_t ucSndAddr,
|
|
uint16_t usRegAddr,
|
|
uint16_t usRegData,
|
|
uint32_t lTimeOut)
|
|
{
|
|
uint8_t *ucMBFrame;
|
|
eMBMasterReqErrCode eErrStatus = MB_MRE_NO_ERR;
|
|
|
|
if (ucSndAddr > CONFIG_MB_MASTER_TOTAL_SLAVE_NUM)
|
|
{
|
|
eErrStatus = MB_MRE_ILL_ARG;
|
|
}
|
|
else if (xMBMasterRunResTake(lTimeOut) == false)
|
|
{
|
|
eErrStatus = MB_MRE_MASTER_BUSY;
|
|
}
|
|
else
|
|
{
|
|
vMBMasterGetPDUSndBuf(&ucMBFrame);
|
|
vMBMasterSetDestAddress(ucSndAddr);
|
|
ucMBFrame[MB_PDU_FUNC_OFF] = MB_FUNC_WRITE_REGISTER;
|
|
ucMBFrame[MB_PDU_REQ_WRITE_ADDR_OFF] = usRegAddr >> 8;
|
|
ucMBFrame[MB_PDU_REQ_WRITE_ADDR_OFF + 1] = usRegAddr;
|
|
ucMBFrame[MB_PDU_REQ_WRITE_VALUE_OFF] = usRegData >> 8;
|
|
ucMBFrame[MB_PDU_REQ_WRITE_VALUE_OFF + 1] = usRegData;
|
|
vMBMasterSetPDUSndLength(MB_PDU_SIZE_MIN + MB_PDU_REQ_WRITE_SIZE);
|
|
(void)xMBMasterPortEventPost(EV_MASTER_FRAME_SENT);
|
|
eErrStatus = eMBMasterWaitRequestFinish();
|
|
}
|
|
|
|
return eErrStatus;
|
|
}
|
|
|
|
eMBException eMBMasterFuncWriteHoldingRegister(uint8_t *pucFrame,
|
|
uint16_t *usLen)
|
|
{
|
|
uint16_t usRegAddress;
|
|
eMBException eStatus = MB_EX_NONE;
|
|
eMBErrorCode eRegStatus;
|
|
|
|
if (*usLen == (MB_PDU_SIZE_MIN + MB_PDU_FUNC_WRITE_SIZE))
|
|
{
|
|
usRegAddress = (uint16_t) (pucFrame[MB_PDU_FUNC_WRITE_ADDR_OFF] << 8);
|
|
usRegAddress |= (uint16_t) (pucFrame[MB_PDU_FUNC_WRITE_ADDR_OFF + 1]);
|
|
usRegAddress++;
|
|
|
|
/* Make callback to update the value. */
|
|
|
|
eRegStatus = eMBMasterRegHoldingCB(&pucFrame[MB_PDU_FUNC_WRITE_VALUE_OFF],
|
|
usRegAddress, 1, MB_REG_WRITE);
|
|
|
|
/* If an error occured convert it into a Modbus exception. */
|
|
|
|
if (eRegStatus != MB_ENOERR)
|
|
{
|
|
eStatus = prveMBError2Exception(eRegStatus);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Can't be a valid request because the length is incorrect. */
|
|
|
|
eStatus = MB_EX_ILLEGAL_DATA_VALUE;
|
|
}
|
|
return eStatus;
|
|
}
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* This function will request write multiple holding register.
|
|
*
|
|
* Input Parameters:
|
|
* ucSndAddr salve address
|
|
* usRegAddr register start address
|
|
* usNRegs register total number
|
|
* pusDataBuffer data to be written
|
|
* lTimeOut timeout (-1 will waiting forever)
|
|
*
|
|
* Returned Value:
|
|
* error code
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_MB_FUNC_WRITE_MULTIPLE_HOLDING_ENABLED
|
|
eMBMasterReqErrCode
|
|
eMBMasterReqWriteMultipleHoldingRegister(uint8_t ucSndAddr,
|
|
uint16_t usRegAddr,
|
|
uint16_t usNRegs,
|
|
uint16_t *pusDataBuffer,
|
|
uint32_t lTimeOut)
|
|
{
|
|
uint8_t *ucMBFrame;
|
|
uint16_t usRegIndex = 0;
|
|
eMBMasterReqErrCode eErrStatus = MB_MRE_NO_ERR;
|
|
|
|
if (ucSndAddr > CONFIG_MB_MASTER_TOTAL_SLAVE_NUM)
|
|
{
|
|
eErrStatus = MB_MRE_ILL_ARG;
|
|
}
|
|
else if (xMBMasterRunResTake(lTimeOut) == false)
|
|
{
|
|
eErrStatus = MB_MRE_MASTER_BUSY;
|
|
}
|
|
else
|
|
{
|
|
vMBMasterGetPDUSndBuf(&ucMBFrame);
|
|
vMBMasterSetDestAddress(ucSndAddr);
|
|
ucMBFrame[MB_PDU_FUNC_OFF] = MB_FUNC_WRITE_MULTIPLE_REGISTERS;
|
|
ucMBFrame[MB_PDU_REQ_WRITE_MUL_ADDR_OFF] = usRegAddr >> 8;
|
|
ucMBFrame[MB_PDU_REQ_WRITE_MUL_ADDR_OFF + 1] = usRegAddr;
|
|
ucMBFrame[MB_PDU_REQ_WRITE_MUL_REGCNT_OFF] = usNRegs >> 8;
|
|
ucMBFrame[MB_PDU_REQ_WRITE_MUL_REGCNT_OFF + 1] = usNRegs;
|
|
ucMBFrame[MB_PDU_REQ_WRITE_MUL_BYTECNT_OFF] = usNRegs * 2;
|
|
ucMBFrame += MB_PDU_REQ_WRITE_MUL_VALUES_OFF;
|
|
|
|
while (usNRegs > usRegIndex)
|
|
{
|
|
*ucMBFrame++ = pusDataBuffer[usRegIndex] >> 8;
|
|
*ucMBFrame++ = pusDataBuffer[usRegIndex++];
|
|
}
|
|
|
|
vMBMasterSetPDUSndLength(MB_PDU_SIZE_MIN + MB_PDU_REQ_WRITE_MUL_SIZE_MIN +
|
|
2 * usNRegs);
|
|
(void)xMBMasterPortEventPost(EV_MASTER_FRAME_SENT);
|
|
eErrStatus = eMBMasterWaitRequestFinish();
|
|
}
|
|
|
|
return eErrStatus;
|
|
}
|
|
|
|
eMBException eMBMasterFuncWriteMultipleHoldingRegister(uint8_t *pucFrame,
|
|
uint16_t *usLen)
|
|
{
|
|
uint8_t *ucMBFrame;
|
|
uint16_t usRegAddress;
|
|
uint16_t usRegCount;
|
|
uint8_t ucRegByteCount;
|
|
|
|
eMBException eStatus = MB_EX_NONE;
|
|
eMBErrorCode eRegStatus;
|
|
|
|
/* If this request is broadcast, the *usLen is not need check. */
|
|
|
|
if ((*usLen == MB_PDU_SIZE_MIN + MB_PDU_FUNC_WRITE_MUL_SIZE) ||
|
|
xMBMasterRequestIsBroadcast())
|
|
{
|
|
vMBMasterGetPDUSndBuf(&ucMBFrame);
|
|
usRegAddress = (uint16_t) (ucMBFrame[MB_PDU_REQ_WRITE_MUL_ADDR_OFF] << 8);
|
|
usRegAddress |= (uint16_t) (ucMBFrame[MB_PDU_REQ_WRITE_MUL_ADDR_OFF + 1]);
|
|
usRegAddress++;
|
|
|
|
usRegCount = (uint16_t) (ucMBFrame[MB_PDU_REQ_WRITE_MUL_REGCNT_OFF] << 8);
|
|
usRegCount |= (uint16_t) (ucMBFrame[MB_PDU_REQ_WRITE_MUL_REGCNT_OFF + 1]);
|
|
|
|
ucRegByteCount = ucMBFrame[MB_PDU_REQ_WRITE_MUL_BYTECNT_OFF];
|
|
|
|
if (ucRegByteCount == 2 * usRegCount)
|
|
{
|
|
/* Make callback to update the register values. */
|
|
|
|
eRegStatus =
|
|
eMBMasterRegHoldingCB(&ucMBFrame[MB_PDU_REQ_WRITE_MUL_VALUES_OFF],
|
|
usRegAddress, usRegCount, MB_REG_WRITE);
|
|
|
|
/* If an error occured convert it into a Modbus exception. */
|
|
|
|
if (eRegStatus != MB_ENOERR)
|
|
{
|
|
eStatus = prveMBError2Exception(eRegStatus);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
eStatus = MB_EX_ILLEGAL_DATA_VALUE;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Can't be a valid request because the length is incorrect. */
|
|
|
|
eStatus = MB_EX_ILLEGAL_DATA_VALUE;
|
|
}
|
|
|
|
return eStatus;
|
|
}
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* This function will request read holding register.
|
|
*
|
|
* Input Parameters:
|
|
* ucSndAddr salve address
|
|
* usRegAddr register start address
|
|
* usNRegs register total number
|
|
* lTimeOut timeout (-1 will waiting forever)
|
|
*
|
|
* Returned Value:
|
|
* error code
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_MB_FUNC_READ_HOLDING_ENABLED
|
|
eMBMasterReqErrCode eMBMasterReqReadHoldingRegister(uint8_t ucSndAddr,
|
|
uint16_t usRegAddr,
|
|
uint16_t usNRegs,
|
|
uint32_t lTimeOut)
|
|
{
|
|
uint8_t *ucMBFrame;
|
|
eMBMasterReqErrCode eErrStatus = MB_MRE_NO_ERR;
|
|
|
|
if (ucSndAddr > CONFIG_MB_MASTER_TOTAL_SLAVE_NUM)
|
|
{
|
|
eErrStatus = MB_MRE_ILL_ARG;
|
|
}
|
|
else if (xMBMasterRunResTake(lTimeOut) == false)
|
|
{
|
|
eErrStatus = MB_MRE_MASTER_BUSY;
|
|
}
|
|
else
|
|
{
|
|
vMBMasterGetPDUSndBuf(&ucMBFrame);
|
|
vMBMasterSetDestAddress(ucSndAddr);
|
|
ucMBFrame[MB_PDU_FUNC_OFF] = MB_FUNC_READ_HOLDING_REGISTER;
|
|
ucMBFrame[MB_PDU_REQ_READ_ADDR_OFF] = usRegAddr >> 8;
|
|
ucMBFrame[MB_PDU_REQ_READ_ADDR_OFF + 1] = usRegAddr;
|
|
ucMBFrame[MB_PDU_REQ_READ_REGCNT_OFF] = usNRegs >> 8;
|
|
ucMBFrame[MB_PDU_REQ_READ_REGCNT_OFF + 1] = usNRegs;
|
|
vMBMasterSetPDUSndLength(MB_PDU_SIZE_MIN + MB_PDU_REQ_READ_SIZE);
|
|
(void)xMBMasterPortEventPost(EV_MASTER_FRAME_SENT);
|
|
eErrStatus = eMBMasterWaitRequestFinish();
|
|
}
|
|
|
|
return eErrStatus;
|
|
}
|
|
|
|
eMBException eMBMasterFuncReadHoldingRegister(uint8_t *pucFrame,
|
|
uint16_t *usLen)
|
|
{
|
|
uint8_t *ucMBFrame;
|
|
uint16_t usRegAddress;
|
|
uint16_t usRegCount;
|
|
|
|
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_READ_SIZE_MIN)
|
|
{
|
|
vMBMasterGetPDUSndBuf(&ucMBFrame);
|
|
usRegAddress = (uint16_t) (ucMBFrame[MB_PDU_REQ_READ_ADDR_OFF] << 8);
|
|
usRegAddress |= (uint16_t) (ucMBFrame[MB_PDU_REQ_READ_ADDR_OFF + 1]);
|
|
usRegAddress++;
|
|
|
|
usRegCount = (uint16_t) (ucMBFrame[MB_PDU_REQ_READ_REGCNT_OFF] << 8);
|
|
usRegCount |= (uint16_t) (ucMBFrame[MB_PDU_REQ_READ_REGCNT_OFF + 1]);
|
|
|
|
/* Check if the number of registers to read is valid. If not return
|
|
* Modbus illegal data value exception.
|
|
*/
|
|
|
|
if ((usRegCount >= 1) &&
|
|
(2 * usRegCount == pucFrame[MB_PDU_FUNC_READ_BYTECNT_OFF]))
|
|
{
|
|
/* Make callback to fill the buffer. */
|
|
|
|
eRegStatus =
|
|
eMBMasterRegHoldingCB(&pucFrame[MB_PDU_FUNC_READ_VALUES_OFF],
|
|
usRegAddress, usRegCount, MB_REG_READ);
|
|
|
|
/* If an error occurred convert it into a Modbus exception. */
|
|
|
|
if (eRegStatus != MB_ENOERR)
|
|
{
|
|
eStatus = prveMBError2Exception(eRegStatus);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
eStatus = MB_EX_ILLEGAL_DATA_VALUE;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Can't be a valid request because the length is incorrect. */
|
|
|
|
eStatus = MB_EX_ILLEGAL_DATA_VALUE;
|
|
}
|
|
return eStatus;
|
|
}
|
|
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Description:
|
|
* This function will request read and write holding register.
|
|
*
|
|
* Input Parameters:
|
|
* ucSndAddr salve address
|
|
* usReadRegAddr read register start address
|
|
* usNReadRegs read register total number
|
|
* pusDataBuffer data to be written
|
|
* usWriteRegAddr write register start address
|
|
* usNWriteRegs write register total number
|
|
* lTimeOut timeout (-1 will waiting forever)
|
|
*
|
|
* Returned Value:
|
|
* error code
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_MB_FUNC_READWRITE_HOLDING_ENABLED
|
|
eMBMasterReqErrCode
|
|
eMBMasterReqReadWriteMultipleHoldingRegister(uint8_t ucSndAddr,
|
|
uint16_t usReadRegAddr,
|
|
uint16_t usNReadRegs,
|
|
uint16_t *pusDataBuffer,
|
|
uint16_t usWriteRegAddr,
|
|
uint16_t usNWriteRegs,
|
|
uint32_t lTimeOut)
|
|
{
|
|
uint8_t *ucMBFrame;
|
|
uint16_t usRegIndex = 0;
|
|
eMBMasterReqErrCode eErrStatus = MB_MRE_NO_ERR;
|
|
|
|
if (ucSndAddr > CONFIG_MB_MASTER_TOTAL_SLAVE_NUM)
|
|
{
|
|
eErrStatus = MB_MRE_ILL_ARG;
|
|
}
|
|
else if (xMBMasterRunResTake(lTimeOut) == false)
|
|
{
|
|
eErrStatus = MB_MRE_MASTER_BUSY;
|
|
}
|
|
else
|
|
{
|
|
vMBMasterGetPDUSndBuf(&ucMBFrame);
|
|
vMBMasterSetDestAddress(ucSndAddr);
|
|
ucMBFrame[MB_PDU_FUNC_OFF] = MB_FUNC_READWRITE_MULTIPLE_REGISTERS;
|
|
ucMBFrame[MB_PDU_REQ_READWRITE_READ_ADDR_OFF] = usReadRegAddr >> 8;
|
|
ucMBFrame[MB_PDU_REQ_READWRITE_READ_ADDR_OFF + 1] = usReadRegAddr;
|
|
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
|