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/mbutils.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?
User | Revision | Line number | New 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: mbutils.c,v 1.6 2007/02/18 23:49:07 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 "mbproto.h" |
stanley1228 | 0:aefcdfe9ca2f | 41 | |
stanley1228 | 0:aefcdfe9ca2f | 42 | /* ----------------------- Defines ------------------------------------------*/ |
stanley1228 | 0:aefcdfe9ca2f | 43 | #define BITS_UCHAR 8U |
stanley1228 | 0:aefcdfe9ca2f | 44 | |
stanley1228 | 0:aefcdfe9ca2f | 45 | /* ----------------------- Start implementation -----------------------------*/ |
stanley1228 | 0:aefcdfe9ca2f | 46 | void |
stanley1228 | 0:aefcdfe9ca2f | 47 | xMBUtilSetBits( UCHAR * ucByteBuf, USHORT usBitOffset, UCHAR ucNBits, |
stanley1228 | 0:aefcdfe9ca2f | 48 | UCHAR ucValue ) |
stanley1228 | 0:aefcdfe9ca2f | 49 | { |
stanley1228 | 0:aefcdfe9ca2f | 50 | USHORT usWordBuf; |
stanley1228 | 0:aefcdfe9ca2f | 51 | USHORT usMask; |
stanley1228 | 0:aefcdfe9ca2f | 52 | USHORT usByteOffset; |
stanley1228 | 0:aefcdfe9ca2f | 53 | USHORT usNPreBits; |
stanley1228 | 0:aefcdfe9ca2f | 54 | USHORT usValue = ucValue; |
stanley1228 | 0:aefcdfe9ca2f | 55 | |
stanley1228 | 0:aefcdfe9ca2f | 56 | assert( ucNBits <= 8 ); |
stanley1228 | 0:aefcdfe9ca2f | 57 | assert( ( size_t )BITS_UCHAR == sizeof( UCHAR ) * 8 ); |
stanley1228 | 0:aefcdfe9ca2f | 58 | |
stanley1228 | 0:aefcdfe9ca2f | 59 | /* Calculate byte offset for first byte containing the bit values starting |
stanley1228 | 0:aefcdfe9ca2f | 60 | * at usBitOffset. */ |
stanley1228 | 0:aefcdfe9ca2f | 61 | usByteOffset = ( USHORT )( ( usBitOffset ) / BITS_UCHAR ); |
stanley1228 | 0:aefcdfe9ca2f | 62 | |
stanley1228 | 0:aefcdfe9ca2f | 63 | /* How many bits precede our bits to set. */ |
stanley1228 | 0:aefcdfe9ca2f | 64 | usNPreBits = ( USHORT )( usBitOffset - usByteOffset * BITS_UCHAR ); |
stanley1228 | 0:aefcdfe9ca2f | 65 | |
stanley1228 | 0:aefcdfe9ca2f | 66 | /* Move bit field into position over bits to set */ |
stanley1228 | 0:aefcdfe9ca2f | 67 | usValue <<= usNPreBits; |
stanley1228 | 0:aefcdfe9ca2f | 68 | |
stanley1228 | 0:aefcdfe9ca2f | 69 | /* Prepare a mask for setting the new bits. */ |
stanley1228 | 0:aefcdfe9ca2f | 70 | usMask = ( USHORT )( ( 1 << ( USHORT ) ucNBits ) - 1 ); |
stanley1228 | 0:aefcdfe9ca2f | 71 | usMask <<= usBitOffset - usByteOffset * BITS_UCHAR; |
stanley1228 | 0:aefcdfe9ca2f | 72 | |
stanley1228 | 0:aefcdfe9ca2f | 73 | /* copy bits into temporary storage. */ |
stanley1228 | 0:aefcdfe9ca2f | 74 | usWordBuf = ucByteBuf[usByteOffset]; |
stanley1228 | 0:aefcdfe9ca2f | 75 | usWordBuf |= ucByteBuf[usByteOffset + 1] << BITS_UCHAR; |
stanley1228 | 0:aefcdfe9ca2f | 76 | |
stanley1228 | 0:aefcdfe9ca2f | 77 | /* Zero out bit field bits and then or value bits into them. */ |
stanley1228 | 0:aefcdfe9ca2f | 78 | usWordBuf = ( USHORT )( ( usWordBuf & ( ~usMask ) ) | usValue ); |
stanley1228 | 0:aefcdfe9ca2f | 79 | |
stanley1228 | 0:aefcdfe9ca2f | 80 | /* move bits back into storage */ |
stanley1228 | 0:aefcdfe9ca2f | 81 | ucByteBuf[usByteOffset] = ( UCHAR )( usWordBuf & 0xFF ); |
stanley1228 | 0:aefcdfe9ca2f | 82 | ucByteBuf[usByteOffset + 1] = ( UCHAR )( usWordBuf >> BITS_UCHAR ); |
stanley1228 | 0:aefcdfe9ca2f | 83 | } |
stanley1228 | 0:aefcdfe9ca2f | 84 | |
stanley1228 | 0:aefcdfe9ca2f | 85 | UCHAR |
stanley1228 | 0:aefcdfe9ca2f | 86 | xMBUtilGetBits( UCHAR * ucByteBuf, USHORT usBitOffset, UCHAR ucNBits ) |
stanley1228 | 0:aefcdfe9ca2f | 87 | { |
stanley1228 | 0:aefcdfe9ca2f | 88 | USHORT usWordBuf; |
stanley1228 | 0:aefcdfe9ca2f | 89 | USHORT usMask; |
stanley1228 | 0:aefcdfe9ca2f | 90 | USHORT usByteOffset; |
stanley1228 | 0:aefcdfe9ca2f | 91 | USHORT usNPreBits; |
stanley1228 | 0:aefcdfe9ca2f | 92 | |
stanley1228 | 0:aefcdfe9ca2f | 93 | /* Calculate byte offset for first byte containing the bit values starting |
stanley1228 | 0:aefcdfe9ca2f | 94 | * at usBitOffset. */ |
stanley1228 | 0:aefcdfe9ca2f | 95 | usByteOffset = ( USHORT )( ( usBitOffset ) / BITS_UCHAR ); |
stanley1228 | 0:aefcdfe9ca2f | 96 | |
stanley1228 | 0:aefcdfe9ca2f | 97 | /* How many bits precede our bits to set. */ |
stanley1228 | 0:aefcdfe9ca2f | 98 | usNPreBits = ( USHORT )( usBitOffset - usByteOffset * BITS_UCHAR ); |
stanley1228 | 0:aefcdfe9ca2f | 99 | |
stanley1228 | 0:aefcdfe9ca2f | 100 | /* Prepare a mask for setting the new bits. */ |
stanley1228 | 0:aefcdfe9ca2f | 101 | usMask = ( USHORT )( ( 1 << ( USHORT ) ucNBits ) - 1 ); |
stanley1228 | 0:aefcdfe9ca2f | 102 | |
stanley1228 | 0:aefcdfe9ca2f | 103 | /* copy bits into temporary storage. */ |
stanley1228 | 0:aefcdfe9ca2f | 104 | usWordBuf = ucByteBuf[usByteOffset]; |
stanley1228 | 0:aefcdfe9ca2f | 105 | usWordBuf |= ucByteBuf[usByteOffset + 1] << BITS_UCHAR; |
stanley1228 | 0:aefcdfe9ca2f | 106 | |
stanley1228 | 0:aefcdfe9ca2f | 107 | /* throw away unneeded bits. */ |
stanley1228 | 0:aefcdfe9ca2f | 108 | usWordBuf >>= usNPreBits; |
stanley1228 | 0:aefcdfe9ca2f | 109 | |
stanley1228 | 0:aefcdfe9ca2f | 110 | /* mask away bits above the requested bitfield. */ |
stanley1228 | 0:aefcdfe9ca2f | 111 | usWordBuf &= usMask; |
stanley1228 | 0:aefcdfe9ca2f | 112 | |
stanley1228 | 0:aefcdfe9ca2f | 113 | return ( UCHAR ) usWordBuf; |
stanley1228 | 0:aefcdfe9ca2f | 114 | } |
stanley1228 | 0:aefcdfe9ca2f | 115 | |
stanley1228 | 0:aefcdfe9ca2f | 116 | eMBException |
stanley1228 | 0:aefcdfe9ca2f | 117 | prveMBError2Exception( eMBErrorCode eErrorCode ) |
stanley1228 | 0:aefcdfe9ca2f | 118 | { |
stanley1228 | 0:aefcdfe9ca2f | 119 | eMBException eStatus; |
stanley1228 | 0:aefcdfe9ca2f | 120 | |
stanley1228 | 0:aefcdfe9ca2f | 121 | switch ( eErrorCode ) |
stanley1228 | 0:aefcdfe9ca2f | 122 | { |
stanley1228 | 0:aefcdfe9ca2f | 123 | case MB_ENOERR: |
stanley1228 | 0:aefcdfe9ca2f | 124 | eStatus = MB_EX_NONE; |
stanley1228 | 0:aefcdfe9ca2f | 125 | break; |
stanley1228 | 0:aefcdfe9ca2f | 126 | |
stanley1228 | 0:aefcdfe9ca2f | 127 | case MB_ENOREG: |
stanley1228 | 0:aefcdfe9ca2f | 128 | eStatus = MB_EX_ILLEGAL_DATA_ADDRESS; |
stanley1228 | 0:aefcdfe9ca2f | 129 | break; |
stanley1228 | 0:aefcdfe9ca2f | 130 | |
stanley1228 | 0:aefcdfe9ca2f | 131 | case MB_ETIMEDOUT: |
stanley1228 | 0:aefcdfe9ca2f | 132 | eStatus = MB_EX_SLAVE_BUSY; |
stanley1228 | 0:aefcdfe9ca2f | 133 | break; |
stanley1228 | 0:aefcdfe9ca2f | 134 | |
stanley1228 | 0:aefcdfe9ca2f | 135 | default: |
stanley1228 | 0:aefcdfe9ca2f | 136 | eStatus = MB_EX_SLAVE_DEVICE_FAILURE; |
stanley1228 | 0:aefcdfe9ca2f | 137 | break; |
stanley1228 | 0:aefcdfe9ca2f | 138 | } |
stanley1228 | 0:aefcdfe9ca2f | 139 | |
stanley1228 | 0:aefcdfe9ca2f | 140 | return eStatus; |
stanley1228 | 0:aefcdfe9ca2f | 141 | } |