hsu han-lin / Modbus_For_F446RE

1.original from Cam Marshall 2.use for F446RE Test 3.use the interrupt method of uart 4.not change to RTOS yet

Dependents:   RoboticArm Modbus_Gripper_Test

functions/mbfuncinput.cpp@0:aefcdfe9ca2f, 2017-03-31 (annotated)

Committer:
stanley1228
Date:
Fri Mar 31 01:47:35 2017 +0000
Revision:
0:aefcdfe9ca2f
1.change the file in "port" folder to F446RE use

Who changed what in which revision?

UserRevisionLine numberNew contents of line
stanley1228 0:aefcdfe9ca2f 1 /*
stanley1228 0:aefcdfe9ca2f 2 * FreeModbus Libary: A portable Modbus implementation for Modbus ASCII/RTU.
stanley1228 0:aefcdfe9ca2f 3 * Copyright (c) 2006 Christian Walter <wolti@sil.at>
stanley1228 0:aefcdfe9ca2f 4 * All rights reserved.
stanley1228 0:aefcdfe9ca2f 5 *
stanley1228 0:aefcdfe9ca2f 6 * Redistribution and use in source and binary forms, with or without
stanley1228 0:aefcdfe9ca2f 7 * modification, are permitted provided that the following conditions
stanley1228 0:aefcdfe9ca2f 8 * are met:
stanley1228 0:aefcdfe9ca2f 9 * 1. Redistributions of source code must retain the above copyright
stanley1228 0:aefcdfe9ca2f 10 * notice, this list of conditions and the following disclaimer.
stanley1228 0:aefcdfe9ca2f 11 * 2. Redistributions in binary form must reproduce the above copyright
stanley1228 0:aefcdfe9ca2f 12 * notice, this list of conditions and the following disclaimer in the
stanley1228 0:aefcdfe9ca2f 13 * documentation and/or other materials provided with the distribution.
stanley1228 0:aefcdfe9ca2f 14 * 3. The name of the author may not be used to endorse or promote products
stanley1228 0:aefcdfe9ca2f 15 * derived from this software without specific prior written permission.
stanley1228 0:aefcdfe9ca2f 16 *
stanley1228 0:aefcdfe9ca2f 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
stanley1228 0:aefcdfe9ca2f 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
stanley1228 0:aefcdfe9ca2f 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
stanley1228 0:aefcdfe9ca2f 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
stanley1228 0:aefcdfe9ca2f 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
stanley1228 0:aefcdfe9ca2f 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
stanley1228 0:aefcdfe9ca2f 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
stanley1228 0:aefcdfe9ca2f 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
stanley1228 0:aefcdfe9ca2f 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
stanley1228 0:aefcdfe9ca2f 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
stanley1228 0:aefcdfe9ca2f 27 *
stanley1228 0:aefcdfe9ca2f 28 * File: $Id: mbfuncinput.c,v 1.10 2007/09/12 10:15:56 wolti Exp $
stanley1228 0:aefcdfe9ca2f 29 */
stanley1228 0:aefcdfe9ca2f 30
stanley1228 0:aefcdfe9ca2f 31 /* ----------------------- System includes ----------------------------------*/
stanley1228 0:aefcdfe9ca2f 32 #include "stdlib.h"
stanley1228 0:aefcdfe9ca2f 33 #include "string.h"
stanley1228 0:aefcdfe9ca2f 34
stanley1228 0:aefcdfe9ca2f 35 /* ----------------------- Platform includes --------------------------------*/
stanley1228 0:aefcdfe9ca2f 36 #include "port.h"
stanley1228 0:aefcdfe9ca2f 37
stanley1228 0:aefcdfe9ca2f 38 /* ----------------------- Modbus includes ----------------------------------*/
stanley1228 0:aefcdfe9ca2f 39 #include "mb.h"
stanley1228 0:aefcdfe9ca2f 40 #include "mbframe.h"
stanley1228 0:aefcdfe9ca2f 41 #include "mbproto.h"
stanley1228 0:aefcdfe9ca2f 42 #include "mbconfig.h"
stanley1228 0:aefcdfe9ca2f 43
stanley1228 0:aefcdfe9ca2f 44 /* ----------------------- Defines ------------------------------------------*/
stanley1228 0:aefcdfe9ca2f 45 #define MB_PDU_FUNC_READ_ADDR_OFF ( MB_PDU_DATA_OFF )
stanley1228 0:aefcdfe9ca2f 46 #define MB_PDU_FUNC_READ_REGCNT_OFF ( MB_PDU_DATA_OFF + 2 )
stanley1228 0:aefcdfe9ca2f 47 #define MB_PDU_FUNC_READ_SIZE ( 4 )
stanley1228 0:aefcdfe9ca2f 48 #define MB_PDU_FUNC_READ_REGCNT_MAX ( 0x007D )
stanley1228 0:aefcdfe9ca2f 49
stanley1228 0:aefcdfe9ca2f 50 #define MB_PDU_FUNC_READ_RSP_BYTECNT_OFF ( MB_PDU_DATA_OFF )
stanley1228 0:aefcdfe9ca2f 51
stanley1228 0:aefcdfe9ca2f 52 /* ----------------------- Static functions ---------------------------------*/
stanley1228 0:aefcdfe9ca2f 53 eMBException prveMBError2Exception( eMBErrorCode eErrorCode );
stanley1228 0:aefcdfe9ca2f 54
stanley1228 0:aefcdfe9ca2f 55 /* ----------------------- Start implementation -----------------------------*/
stanley1228 0:aefcdfe9ca2f 56 #if MB_FUNC_READ_INPUT_ENABLED > 0
stanley1228 0:aefcdfe9ca2f 57
stanley1228 0:aefcdfe9ca2f 58 eMBException
stanley1228 0:aefcdfe9ca2f 59 eMBFuncReadInputRegister( UCHAR * pucFrame, USHORT * usLen )
stanley1228 0:aefcdfe9ca2f 60 {
stanley1228 0:aefcdfe9ca2f 61 USHORT usRegAddress;
stanley1228 0:aefcdfe9ca2f 62 USHORT usRegCount;
stanley1228 0:aefcdfe9ca2f 63 UCHAR *pucFrameCur;
stanley1228 0:aefcdfe9ca2f 64
stanley1228 0:aefcdfe9ca2f 65 eMBException eStatus = MB_EX_NONE;
stanley1228 0:aefcdfe9ca2f 66 eMBErrorCode eRegStatus;
stanley1228 0:aefcdfe9ca2f 67
stanley1228 0:aefcdfe9ca2f 68 if( *usLen == ( MB_PDU_FUNC_READ_SIZE + MB_PDU_SIZE_MIN ) )
stanley1228 0:aefcdfe9ca2f 69 {
stanley1228 0:aefcdfe9ca2f 70 usRegAddress = ( USHORT )( pucFrame[MB_PDU_FUNC_READ_ADDR_OFF] << 8 );
stanley1228 0:aefcdfe9ca2f 71 usRegAddress |= ( USHORT )( pucFrame[MB_PDU_FUNC_READ_ADDR_OFF + 1] );
stanley1228 0:aefcdfe9ca2f 72 usRegAddress++;
stanley1228 0:aefcdfe9ca2f 73
stanley1228 0:aefcdfe9ca2f 74 usRegCount = ( USHORT )( pucFrame[MB_PDU_FUNC_READ_REGCNT_OFF] << 8 );
stanley1228 0:aefcdfe9ca2f 75 usRegCount |= ( USHORT )( pucFrame[MB_PDU_FUNC_READ_REGCNT_OFF + 1] );
stanley1228 0:aefcdfe9ca2f 76
stanley1228 0:aefcdfe9ca2f 77 /* Check if the number of registers to read is valid. If not
stanley1228 0:aefcdfe9ca2f 78 * return Modbus illegal data value exception.
stanley1228 0:aefcdfe9ca2f 79 */
stanley1228 0:aefcdfe9ca2f 80 if( ( usRegCount >= 1 )
stanley1228 0:aefcdfe9ca2f 81 && ( usRegCount < MB_PDU_FUNC_READ_REGCNT_MAX ) )
stanley1228 0:aefcdfe9ca2f 82 {
stanley1228 0:aefcdfe9ca2f 83 /* Set the current PDU data pointer to the beginning. */
stanley1228 0:aefcdfe9ca2f 84 pucFrameCur = &pucFrame[MB_PDU_FUNC_OFF];
stanley1228 0:aefcdfe9ca2f 85 *usLen = MB_PDU_FUNC_OFF;
stanley1228 0:aefcdfe9ca2f 86
stanley1228 0:aefcdfe9ca2f 87 /* First byte contains the function code. */
stanley1228 0:aefcdfe9ca2f 88 *pucFrameCur++ = MB_FUNC_READ_INPUT_REGISTER;
stanley1228 0:aefcdfe9ca2f 89 *usLen += 1;
stanley1228 0:aefcdfe9ca2f 90
stanley1228 0:aefcdfe9ca2f 91 /* Second byte in the response contain the number of bytes. */
stanley1228 0:aefcdfe9ca2f 92 *pucFrameCur++ = ( UCHAR )( usRegCount * 2 );
stanley1228 0:aefcdfe9ca2f 93 *usLen += 1;
stanley1228 0:aefcdfe9ca2f 94
stanley1228 0:aefcdfe9ca2f 95 eRegStatus = eMBRegInputCB( pucFrameCur, usRegAddress, usRegCount );
stanley1228 0:aefcdfe9ca2f 96
stanley1228 0:aefcdfe9ca2f 97 /* If an error occured convert it into a Modbus exception. */
stanley1228 0:aefcdfe9ca2f 98 if( eRegStatus != MB_ENOERR )
stanley1228 0:aefcdfe9ca2f 99 {
stanley1228 0:aefcdfe9ca2f 100 eStatus = prveMBError2Exception( eRegStatus );
stanley1228 0:aefcdfe9ca2f 101 }
stanley1228 0:aefcdfe9ca2f 102 else
stanley1228 0:aefcdfe9ca2f 103 {
stanley1228 0:aefcdfe9ca2f 104 *usLen += usRegCount * 2;
stanley1228 0:aefcdfe9ca2f 105 }
stanley1228 0:aefcdfe9ca2f 106 }
stanley1228 0:aefcdfe9ca2f 107 else
stanley1228 0:aefcdfe9ca2f 108 {
stanley1228 0:aefcdfe9ca2f 109 eStatus = MB_EX_ILLEGAL_DATA_VALUE;
stanley1228 0:aefcdfe9ca2f 110 }
stanley1228 0:aefcdfe9ca2f 111 }
stanley1228 0:aefcdfe9ca2f 112 else
stanley1228 0:aefcdfe9ca2f 113 {
stanley1228 0:aefcdfe9ca2f 114 /* Can't be a valid read input register request because the length
stanley1228 0:aefcdfe9ca2f 115 * is incorrect. */
stanley1228 0:aefcdfe9ca2f 116 eStatus = MB_EX_ILLEGAL_DATA_VALUE;
stanley1228 0:aefcdfe9ca2f 117 }
stanley1228 0:aefcdfe9ca2f 118 return eStatus;
stanley1228 0:aefcdfe9ca2f 119 }
stanley1228 0:aefcdfe9ca2f 120
stanley1228 0:aefcdfe9ca2f 121 #endif