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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