[5] | 1 | /* |
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| 2 | * libmodbusWrapper.cpp |
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| 3 | * ModBusKit |
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| 4 | */ |
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| 5 | // Copyright 2008 Volitans Software and R Engineering, Inc. |
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| 6 | /* |
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| 7 | This library is free software; you can redistribute it and/or |
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| 8 | modify it under the terms of the GNU Lesser General Public |
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| 9 | License as published by the Free Software Foundation; either |
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| 10 | version 2 of the License, or (at your option) any later version. |
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| 11 | |
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| 12 | This library is distributed in the hope that it will be useful, |
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| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 15 | Lesser General Public License for more details. |
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| 16 | |
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| 17 | You should have received a copy of the GNU Lesser General Public |
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| 18 | License along with this library; if not, write to the Free Software |
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| 19 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. |
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| 20 | |
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| 21 | These library of functions are designed to enable a program send and |
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| 22 | receive data from a device that communicates using the Modbus protocol. |
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| 23 | */ |
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| 24 | // |
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| 25 | // This is an Objective-C++ wrapper for libmodbus |
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| 26 | |
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| 27 | #include "libmodbusWrapper.h" |
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| 28 | using namespace std; |
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| 29 | |
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| 30 | bool libmodbusWrapper::lmbInitSerial(const char* device, int baud, int parity, int data_bit, int stop_bit) |
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| 31 | { |
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| 32 | if (data_bit<5 || data_bit>8) |
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| 33 | return(FALSE); |
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| 34 | if (stop_bit<1 || stop_bit>2) |
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| 35 | return(FALSE); |
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| 36 | |
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| 37 | switch(parity) |
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| 38 | { |
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| 39 | case k_none: |
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| 40 | modbus_init_rtu(&mb_param, device, baud, "none", data_bit, stop_bit); |
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| 41 | return(TRUE); |
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| 42 | case k_even: |
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| 43 | modbus_init_rtu(&mb_param, device, baud, "even", data_bit, stop_bit); |
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| 44 | return(TRUE); |
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| 45 | case k_odd: |
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| 46 | modbus_init_rtu(&mb_param, device, baud, "odd", data_bit, stop_bit); |
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| 47 | return(TRUE); |
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| 48 | default: |
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| 49 | return(FALSE); |
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| 50 | } |
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| 51 | return(FALSE); |
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| 52 | } |
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| 53 | |
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| 54 | bool libmodbusWrapper::lmbInitTCP(const char* device, int port) |
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| 55 | { |
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| 56 | if (port<=0) |
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| 57 | modbus_init_tcp(&mb_param, device, MODBUS_TCP_DEFAULT_PORT); |
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| 58 | else |
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| 59 | modbus_init_tcp(&mb_param, device, port); |
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| 60 | |
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| 61 | return(true); |
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| 62 | } |
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| 63 | |
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| 64 | int libmodbusWrapper::lmbConnect() |
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| 65 | { |
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| 66 | return(modbus_connect(&mb_param)); |
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| 67 | } |
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| 68 | |
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| 69 | void libmodbusWrapper::lmbDisconnect() |
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| 70 | { |
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| 71 | modbus_close(&mb_param); |
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| 72 | } |
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| 73 | |
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| 74 | bool libmodbusWrapper::lmbReadDiscreteInput(int slaveID, int startAddress, int inputCount, uint8_t *data) |
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| 75 | { |
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| 76 | int error; |
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| 77 | |
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| 78 | error=read_input_status(&mb_param, slaveID, startAddress, inputCount, data); |
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| 79 | |
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| 80 | if (error>=0) |
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| 81 | { |
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| 82 | errorCode=0; |
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| 83 | return(true); |
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| 84 | } |
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| 85 | |
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| 86 | errorCode=error; |
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| 87 | return(false); |
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| 88 | } |
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| 89 | |
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| 90 | bool libmodbusWrapper::lmbReadCoil(int slaveID, int startAddress, int coilCount, uint8_t *data) |
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| 91 | { |
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| 92 | int error; |
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| 93 | |
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| 94 | error=read_coil_status(&mb_param, slaveID, startAddress, coilCount, data); |
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| 95 | |
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| 96 | if (error>=0) |
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| 97 | { |
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| 98 | errorCode=0; |
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| 99 | return(true); |
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| 100 | } |
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| 101 | |
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| 102 | errorCode=error; |
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| 103 | return(false); |
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| 104 | } |
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| 105 | |
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| 106 | bool libmodbusWrapper::lmbWriteSingleCoil(int slaveID, int coilAddress, bool state) |
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| 107 | { |
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| 108 | int error; |
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| 109 | |
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| 110 | error=force_single_coil(&mb_param, slaveID, coilAddress, state); |
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| 111 | |
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| 112 | if (error>=0) |
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| 113 | { |
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| 114 | errorCode=0; |
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| 115 | return(true); |
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| 116 | } |
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| 117 | |
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| 118 | errorCode=error; |
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| 119 | return(false); |
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| 120 | } |
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| 121 | |
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| 122 | bool libmodbusWrapper::lmbWriteMultipleCoils(int slaveID, int startAddress, int coilCount, uint8_t *states) |
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| 123 | { |
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| 124 | int error; |
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| 125 | |
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| 126 | error=force_multiple_coils(&mb_param, slaveID, startAddress, coilCount, states); |
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| 127 | |
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| 128 | if (error>=0) |
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| 129 | { |
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| 130 | errorCode=0; |
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| 131 | return(true); |
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| 132 | } |
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| 133 | |
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| 134 | errorCode=error; |
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| 135 | return(false); |
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| 136 | } |
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| 137 | |
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| 138 | bool libmodbusWrapper::lmbReadInputRegisters(int slaveID, int startAddress, int registerCount, uint16_t *data) |
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| 139 | { |
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| 140 | int error; |
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| 141 | |
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| 142 | error=read_input_registers(&mb_param, slaveID, startAddress, registerCount, data); |
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| 143 | |
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| 144 | if (error>=0) |
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| 145 | { |
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| 146 | errorCode=0; |
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| 147 | return(true); |
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| 148 | } |
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| 149 | |
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| 150 | errorCode=error; |
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| 151 | return(false); |
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| 152 | } |
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| 153 | |
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| 154 | bool libmodbusWrapper::lmbReadHoldingRegisters(int slaveID, int startAddress, int registerCount, uint16_t *data) |
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| 155 | { |
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| 156 | int error; |
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| 157 | |
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| 158 | error=read_holding_registers(&mb_param, slaveID, startAddress, registerCount, data); |
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| 159 | |
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| 160 | if (error>=0) |
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| 161 | { |
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| 162 | errorCode=0; |
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| 163 | return(true); |
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| 164 | } |
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| 165 | |
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| 166 | errorCode=error; |
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| 167 | return(false); |
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| 168 | } |
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| 169 | |
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| 170 | bool libmodbusWrapper::lmbWriteSingleHoldingRegister(int slaveID, int registerAddress, uint16_t value) |
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| 171 | { |
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| 172 | int error; |
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| 173 | |
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| 174 | error=preset_single_register(&mb_param, slaveID, registerAddress, value); |
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| 175 | |
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| 176 | if (error>=0) |
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| 177 | { |
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| 178 | errorCode=0; |
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| 179 | return(true); |
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| 180 | } |
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| 181 | |
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| 182 | errorCode=error; |
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| 183 | return(false); |
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| 184 | } |
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| 185 | |
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| 186 | bool libmodbusWrapper::lmbWriteMultipleHoldingRegisters(int slaveID, int startAddress, int registerCount, uint16_t *values) |
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| 187 | { |
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| 188 | int error; |
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| 189 | |
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| 190 | error=preset_multiple_registers(&mb_param, slaveID, startAddress, registerCount, values); |
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| 191 | |
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| 192 | if (error>=0) |
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| 193 | { |
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| 194 | errorCode=0; |
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| 195 | return(true); |
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| 196 | } |
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| 197 | |
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| 198 | errorCode=error; |
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| 199 | return(false); |
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| 200 | } |
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| 201 | |
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| 202 | int libmodbusWrapper::lmbErrorCode() |
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| 203 | { |
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| 204 | return(errorCode); |
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| 205 | } |
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| 206 | |
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| 207 | void libmodbusWrapper::lmbSetDebug(bool state) |
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| 208 | { |
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| 209 | modbus_set_debug(&mb_param, (int)state); |
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| 210 | debug=state; |
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| 211 | } |
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| 212 | |
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| 213 | void libmodbusWrapper::lmbSetRawDataSave(bool state) |
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| 214 | { |
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| 215 | modbus_set_raw_data_save(&mb_param, (int)state); |
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| 216 | } |
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| 217 | |
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| 218 | int libmodbusWrapper::lmbLastRawQuery(uint8_t *rawQuery) |
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| 219 | { |
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| 220 | return(modbus_last_raw_query(&mb_param, rawQuery)); |
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| 221 | } |
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| 222 | |
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| 223 | int libmodbusWrapper::lmbLastRawResponse(uint8_t *rawResponse) |
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| 224 | { |
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| 225 | return(modbus_last_raw_response(&mb_param, rawResponse)); |
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| 226 | } |
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| 227 | |
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| 228 | int libmodbusWrapper::lmbLastRawQueryLength() |
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| 229 | { |
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| 230 | return(modbus_last_raw_query_length(&mb_param)); |
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| 231 | } |
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| 232 | |
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| 233 | int libmodbusWrapper::lmbLastRawResponseLength() |
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| 234 | { |
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| 235 | return(modbus_last_raw_response_length(&mb_param)); |
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| 236 | } |
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| 237 | |
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