| /**************************************************************************** |
| * apps/modbus/functions/mbfuncholding_m.c |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| * SPDX-FileCopyrightText: 2013 Armink <armink.ztl@gmail.com> |
| * |
| * 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_MB_RTU_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_MASTER_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); |
| 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 occurred 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_MASTER_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); |
| 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 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 |
| |
| /**************************************************************************** |
| * 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_MASTER_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); |
| 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_MASTER_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); |
| 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 |
