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1 /************************************************************************** |
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2 * |
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3 * Copyright (C) 2012 Steve Karg <skarg@users.sourceforge.net> |
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4 * Copyright (C) 2017 Mario de Sousa <msousa@fe.up.pt> |
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5 * |
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6 * Permission is hereby granted, free of charge, to any person obtaining |
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7 * a copy of this software and associated documentation files (the |
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8 * "Software"), to deal in the Software without restriction, including |
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9 * without limitation the rights to use, copy, modify, merge, publish, |
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10 * distribute, sublicense, and/or sell copies of the Software, and to |
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11 * permit persons to whom the Software is furnished to do so, subject to |
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12 * the following conditions: |
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13 * |
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14 * The above copyright notice and this permission notice shall be included |
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15 * in all copies or substantial portions of the Software. |
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16 * |
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17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
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20 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
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21 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
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22 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
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23 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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24 * |
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25 *********************************************************************/ |
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26 |
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27 /* Multi-state Input Objects */ |
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28 |
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29 #include <stdbool.h> |
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30 #include <stdint.h> |
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31 #include <stdio.h> |
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32 |
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33 #include "config_bacnet_for_beremiz_%(locstr)s.h" /* the custom configuration for beremiz pluginh */ |
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34 #include "bacdef.h" |
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35 #include "bacdcode.h" |
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36 #include "bacenum.h" |
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37 #include "bacapp.h" |
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38 #include "rp.h" |
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39 #include "wp.h" |
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40 #include "msi_%(locstr)s.h" |
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41 #include "handlers.h" |
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42 |
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43 |
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44 /* initial value for present_value property of each object */ |
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45 #define MSI_VALUE_INIT (1) |
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46 |
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47 /* The IEC 61131-3 located variables mapped onto the Multi-state Input objects of BACnet protocol */ |
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48 %(MSI_lvars)s |
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49 |
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50 |
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51 /* The array where we keep all the state related to the Multi-state Input Objects */ |
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52 #define MAX_MULTISTATE_INPUTS %(MSI_count)s |
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53 static MULTISTATE_INPUT_DESCR MSI_Descr[MAX_MULTISTATE_INPUTS] = { |
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54 %(MSI_param)s |
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55 }; |
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56 |
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57 |
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58 |
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59 /* These three arrays are used by the ReadPropertyMultiple handler, |
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60 * as well as to initialize the XXX_Property_List used by the |
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61 * Property List (PROP_PROPERTY_LIST) property. |
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62 */ |
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63 static const int Multistate_Input_Properties_Required[] = { |
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64 /* (1) Currently Supported */ |
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65 /* (2) Required by standard ASHRAE 135-2016 */ |
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66 /*(1)(2) */ |
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67 PROP_OBJECT_IDENTIFIER, /* R R ( 75) */ |
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68 PROP_OBJECT_NAME, /* R R ( 77) */ |
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69 PROP_OBJECT_TYPE, /* R R ( 79) */ |
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70 PROP_PRESENT_VALUE, /* W R ( 85) */ |
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71 PROP_STATUS_FLAGS, /* R R (111) */ |
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72 PROP_EVENT_STATE, /* R R ( 36) */ |
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73 PROP_OUT_OF_SERVICE, /* W R ( 81) */ |
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74 PROP_NUMBER_OF_STATES, /* R R ( 74) */ |
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75 // PROP_PROPERTY_LIST, /* R R (371) */ |
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76 -1 |
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77 }; |
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78 |
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79 static const int Multistate_Input_Properties_Optional[] = { |
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80 /* (1) Currently Supported */ |
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81 /* (2) Required by standard ASHRAE 135-2016 */ |
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82 /*(1)(2) */ |
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83 PROP_DESCRIPTION, /* R O ( 28) */ |
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84 PROP_STATE_TEXT, /* R O (110) */ |
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85 -1 |
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86 }; |
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87 |
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88 static const int Multistate_Input_Properties_Proprietary[] = { |
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89 -1 |
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90 }; |
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91 |
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92 |
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93 /* This array stores the PROPERTY_LIST which may be read by clients. |
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94 * End of list is marked by following the last element with the value '-1' |
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95 * |
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96 * It is initialized by Multistate_Input_Init() based off the values |
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97 * stored in Multistate_Input_Properties_Required |
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98 * Multistate_Input_Properties_Optional |
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99 * Multistate_Input_Properties_Proprietary |
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100 */ |
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101 /* TODO: Allocate memory for this array with malloc() at startup */ |
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102 static int Multistate_Input_Properties_List[64]; |
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103 |
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104 |
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105 |
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106 |
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107 |
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108 /********************************************************/ |
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109 /** Callback functions. **/ |
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110 /** Functions required by BACnet devie implementation. **/ |
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111 /********************************************************/ |
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112 |
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113 |
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114 /* This is a callback function. Callback set in My_Object_Table[] array declared in device.c, */ |
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115 void Multistate_Input_Property_Lists( |
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116 const int **pRequired, |
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117 const int **pOptional, |
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118 const int **pProprietary) |
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119 { |
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120 if (pRequired) |
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121 *pRequired = Multistate_Input_Properties_Required; |
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122 if (pOptional) |
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123 *pOptional = Multistate_Input_Properties_Optional; |
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124 if (pProprietary) |
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125 *pProprietary = Multistate_Input_Properties_Proprietary; |
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126 |
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127 return; |
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128 } |
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129 |
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130 |
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131 |
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132 /* This is a callback function. Callback set in My_Object_Table[] array declared in device.c, */ |
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133 void Multistate_Input_Init( |
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134 void) |
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135 { |
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136 unsigned int i, j; |
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137 |
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138 /* initialize the Multistate_Input_Properties_List array */ |
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139 int len = 0; |
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140 len += BACnet_Init_Properties_List(Multistate_Input_Properties_List + len, |
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141 Multistate_Input_Properties_Required); |
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142 len += BACnet_Init_Properties_List(Multistate_Input_Properties_List + len, |
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143 Multistate_Input_Properties_Optional); |
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144 len += BACnet_Init_Properties_List(Multistate_Input_Properties_List + len, |
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145 Multistate_Input_Properties_Proprietary); |
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146 |
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147 /* initialize all the analog output priority arrays to NULL */ |
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148 for (i = 0; i < MAX_MULTISTATE_INPUTS; i++) { |
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149 MSI_Descr[i].Present_Value = MSI_VALUE_INIT; |
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150 for (j = 0; j < MSI_Descr[i].Number_Of_States; j++) { |
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151 sprintf(MSI_Descr[i].State_Text[j], "State %%d", j+1); |
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152 } |
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153 } |
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154 return; |
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155 } |
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156 |
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157 |
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158 |
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159 /* validate that the given instance exists */ |
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160 /* This is a callback function. Callback set in My_Object_Table[] array declared in device.c, */ |
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161 bool Multistate_Input_Valid_Instance( |
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162 uint32_t object_instance) |
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163 { |
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164 // fprintf(stderr, "BACnet plugin: Multistate_Input_Valid_Instance(obj_ID=%%u) called!\n", object _instance); |
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165 return (Multistate_Input_Instance_To_Index(object_instance) < MAX_MULTISTATE_INPUTS); |
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166 } |
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167 |
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168 |
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169 /* the number of Multistate Value Objects */ |
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170 /* This is a callback function. Callback set in My_Object_Table[] array declared in device.c, */ |
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171 unsigned Multistate_Input_Count(void) {return MAX_MULTISTATE_INPUTS;} |
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172 |
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173 |
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174 /* returns the instance (i.e. Object Identifier) that correlates to the correct index */ |
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175 /* This is a callback function. Callback set in My_Object_Table[] array declared in device.c, */ |
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176 uint32_t Multistate_Input_Index_To_Instance(unsigned index) {return MSI_Descr[index].Object_Identifier;} |
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177 |
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178 |
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179 |
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180 |
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181 |
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182 |
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183 /* returns the index that correlates to the correct instance number (Object Identifier) */ |
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184 unsigned Multistate_Input_Instance_To_Index( |
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185 uint32_t object_instance) |
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186 { |
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187 unsigned index = 0; |
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188 |
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189 for (index = 0; index < MAX_MULTISTATE_INPUTS; index++) |
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190 if (object_instance == MSI_Descr[index].Object_Identifier) |
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191 return index; |
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192 |
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193 /* error, this object ID is not in our list! */ |
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194 return MAX_MULTISTATE_INPUTS; |
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195 } |
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196 |
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197 |
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198 |
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199 |
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200 |
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201 uint32_t Multistate_Input_Present_Value( |
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202 uint32_t object_instance) |
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203 { |
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204 uint32_t value = MSI_VALUE_INIT; |
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205 unsigned index = 0; /* offset from instance lookup */ |
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206 |
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207 index = Multistate_Input_Instance_To_Index(object_instance); |
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208 if (index < MAX_MULTISTATE_INPUTS) |
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209 value = MSI_Descr[index].Present_Value; |
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210 |
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211 return value; |
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212 } |
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213 |
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214 |
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215 |
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216 bool Multistate_Input_Present_Value_Set( |
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217 uint32_t object_instance, |
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218 uint32_t value) |
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219 { |
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220 unsigned index = 0; /* offset from instance lookup */ |
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221 |
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222 index = Multistate_Input_Instance_To_Index(object_instance); |
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223 if (index >= MAX_MULTISTATE_INPUTS) |
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224 return false; |
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225 |
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226 if ((value == 0) || (value > MSI_Descr[index].Number_Of_States)) |
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227 return false; |
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228 |
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229 MSI_Descr[index].Present_Value = (uint8_t) value; |
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230 return true; |
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231 } |
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232 |
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233 |
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234 |
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235 |
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236 bool Multistate_Input_Out_Of_Service( |
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237 uint32_t object_instance) |
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238 { |
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239 bool value = false; |
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240 unsigned index = 0; |
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241 |
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242 index = Multistate_Input_Instance_To_Index(object_instance); |
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243 if (index < MAX_MULTISTATE_INPUTS) { |
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244 value = MSI_Descr[index].Out_Of_Service; |
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245 } |
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246 |
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247 return value; |
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248 } |
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249 |
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250 |
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251 |
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252 void Multistate_Input_Out_Of_Service_Set( |
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253 uint32_t object_instance, |
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254 bool value) |
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255 { |
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256 unsigned index = 0; |
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257 |
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258 index = Multistate_Input_Instance_To_Index(object_instance); |
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259 if (index < MAX_MULTISTATE_INPUTS) { |
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260 MSI_Descr[index].Out_Of_Service = value; |
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261 } |
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262 |
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263 return; |
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264 } |
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265 |
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266 |
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267 |
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268 static char *Multistate_Input_Description( |
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269 uint32_t object_instance) |
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270 { |
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271 unsigned index = 0; /* offset from instance lookup */ |
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272 char *pName = NULL; /* return value */ |
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273 |
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274 index = Multistate_Input_Instance_To_Index(object_instance); |
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275 if (index < MAX_MULTISTATE_INPUTS) { |
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276 pName = MSI_Descr[index].Description; |
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277 } |
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278 |
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279 return pName; |
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280 } |
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281 |
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282 |
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283 |
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284 /* This is a callback function. Callback set in My_Object_Table[] array declared in device.c, */ |
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285 bool Multistate_Input_Object_Name( |
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286 uint32_t object_instance, |
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287 BACNET_CHARACTER_STRING * object_name) |
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288 { |
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289 unsigned index = 0; /* offset from instance lookup */ |
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290 bool status = false; |
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291 |
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292 index = Multistate_Input_Instance_To_Index(object_instance); |
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293 if (index < MAX_MULTISTATE_INPUTS) { |
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294 status = characterstring_init_ansi(object_name, MSI_Descr[index].Object_Name); |
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295 } |
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296 |
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297 return status; |
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298 } |
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299 |
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300 |
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301 |
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302 /* return apdu len, or BACNET_STATUS_ERROR on error */ |
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303 /* This is a callback function. Callback set in My_Object_Table[] array declared in device.c, */ |
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304 int Multistate_Input_Read_Property( |
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305 BACNET_READ_PROPERTY_DATA * rpdata) |
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306 { |
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307 int len = 0; |
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308 int apdu_len = 0; /* return value */ |
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309 BACNET_BIT_STRING bit_string; |
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310 BACNET_CHARACTER_STRING char_string; |
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311 uint32_t present_value = 0; |
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312 unsigned object_index = 0; |
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313 unsigned i = 0; |
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314 bool state = false; |
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315 uint8_t *apdu = NULL; |
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316 |
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317 if ((rpdata == NULL) || (rpdata->application_data == NULL) || |
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318 (rpdata->application_data_len == 0)) { |
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319 return 0; |
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320 } |
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321 |
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322 object_index = Multistate_Input_Instance_To_Index(rpdata->object_instance); |
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323 if (object_index >= MAX_MULTISTATE_INPUTS) { |
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324 rpdata->error_class = ERROR_CLASS_OBJECT; |
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325 rpdata->error_code = ERROR_CODE_UNKNOWN_OBJECT; |
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326 return BACNET_STATUS_ERROR; |
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327 } |
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328 |
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329 apdu = rpdata->application_data; |
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330 switch (rpdata->object_property) { |
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331 case PROP_OBJECT_IDENTIFIER: |
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332 apdu_len = |
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333 encode_application_object_id(&apdu[0], |
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334 OBJECT_MULTI_STATE_INPUT, rpdata->object_instance); |
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335 break; |
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336 case PROP_OBJECT_NAME: |
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337 Multistate_Input_Object_Name(rpdata->object_instance, |
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338 &char_string); |
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339 apdu_len = |
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340 encode_application_character_string(&apdu[0], &char_string); |
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341 break; |
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342 case PROP_DESCRIPTION: |
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343 characterstring_init_ansi(&char_string, |
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344 Multistate_Input_Description(rpdata->object_instance)); |
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345 apdu_len = |
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346 encode_application_character_string(&apdu[0], &char_string); |
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347 break; |
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348 case PROP_OBJECT_TYPE: |
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349 apdu_len = |
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350 encode_application_enumerated(&apdu[0], |
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351 OBJECT_MULTI_STATE_INPUT); |
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352 break; |
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353 case PROP_PRESENT_VALUE: |
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354 present_value = |
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355 Multistate_Input_Present_Value(rpdata->object_instance); |
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356 apdu_len = encode_application_unsigned(&apdu[0], present_value); |
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357 break; |
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358 case PROP_STATUS_FLAGS: |
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359 /* note: see the details in the standard on how to use these */ |
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360 bitstring_init(&bit_string); |
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361 bitstring_set_bit(&bit_string, STATUS_FLAG_IN_ALARM, false); |
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362 bitstring_set_bit(&bit_string, STATUS_FLAG_FAULT, false); |
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363 bitstring_set_bit(&bit_string, STATUS_FLAG_OVERRIDDEN, false); |
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364 if (Multistate_Input_Out_Of_Service(rpdata->object_instance)) { |
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365 bitstring_set_bit(&bit_string, STATUS_FLAG_OUT_OF_SERVICE, |
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366 true); |
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367 } else { |
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368 bitstring_set_bit(&bit_string, STATUS_FLAG_OUT_OF_SERVICE, |
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369 false); |
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370 } |
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371 apdu_len = encode_application_bitstring(&apdu[0], &bit_string); |
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372 break; |
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373 case PROP_EVENT_STATE: |
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374 /* note: see the details in the standard on how to use this */ |
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375 apdu_len = |
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376 encode_application_enumerated(&apdu[0], EVENT_STATE_NORMAL); |
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377 break; |
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378 case PROP_OUT_OF_SERVICE: |
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379 state = MSI_Descr[object_index].Out_Of_Service; |
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380 apdu_len = encode_application_boolean(&apdu[0], state); |
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381 break; |
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382 case PROP_NUMBER_OF_STATES: |
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383 apdu_len = |
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384 encode_application_unsigned(&apdu[apdu_len], |
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385 MSI_Descr[object_index].Number_Of_States); |
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386 break; |
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387 case PROP_STATE_TEXT: |
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388 BACnet_encode_array(MSI_Descr[object_index].State_Text, |
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389 MSI_Descr[object_index].Number_Of_States, |
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390 retfalse, BACnet_encode_character_string); |
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391 break; |
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392 // case PROP_PROPERTY_LIST: |
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393 // BACnet_encode_array(Multistate_Input_Properties_List, |
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394 // property_list_count(Multistate_Input_Properties_List), |
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395 // retfalse, encode_application_enumerated); |
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396 // break; |
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397 default: |
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398 rpdata->error_class = ERROR_CLASS_PROPERTY; |
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399 rpdata->error_code = ERROR_CODE_UNKNOWN_PROPERTY; |
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400 apdu_len = BACNET_STATUS_ERROR; |
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401 break; |
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402 } |
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403 /* only array properties can have array options */ |
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404 if ((apdu_len >= 0) && (rpdata->object_property != PROP_STATE_TEXT) && |
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405 // (rpdata->object_property != PROP_PROPERTY_LIST) && |
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406 (rpdata->array_index != BACNET_ARRAY_ALL)) { |
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407 rpdata->error_class = ERROR_CLASS_PROPERTY; |
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408 rpdata->error_code = ERROR_CODE_PROPERTY_IS_NOT_AN_ARRAY; |
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409 apdu_len = BACNET_STATUS_ERROR; |
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410 } |
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411 |
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412 return apdu_len; |
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413 } |
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414 |
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415 /* returns true if successful */ |
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416 /* This is a callback function. Callback set in My_Object_Table[] array declared in device.c, */ |
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417 bool Multistate_Input_Write_Property( |
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418 BACNET_WRITE_PROPERTY_DATA * wp_data) |
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419 { |
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420 bool status = false; /* return value */ |
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421 int len = 0; |
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422 unsigned object_index = 0; |
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423 BACNET_APPLICATION_DATA_VALUE value; |
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424 |
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425 /* decode the some of the request */ |
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426 len = |
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427 bacapp_decode_application_data(wp_data->application_data, |
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428 wp_data->application_data_len, &value); |
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429 /* FIXME: len < application_data_len: more data? */ |
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430 if (len < 0) { |
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431 /* error while decoding - a value larger than we can handle */ |
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432 wp_data->error_class = ERROR_CLASS_PROPERTY; |
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433 wp_data->error_code = ERROR_CODE_VALUE_OUT_OF_RANGE; |
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434 return false; |
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435 } |
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436 if ((wp_data->object_property != PROP_STATE_TEXT) && |
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437 (wp_data->array_index != BACNET_ARRAY_ALL)) { |
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438 /* only array properties can have array options */ |
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439 wp_data->error_class = ERROR_CLASS_PROPERTY; |
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440 wp_data->error_code = ERROR_CODE_PROPERTY_IS_NOT_AN_ARRAY; |
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441 return false; |
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442 } |
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443 /* No need to check whether object_index is within bounds. |
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444 * Has already been checked before Multistate_Input_Write_Property() is called |
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445 */ |
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446 object_index = Multistate_Input_Instance_To_Index(wp_data->object_instance); |
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447 |
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448 switch (wp_data->object_property) { |
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449 case PROP_PRESENT_VALUE: |
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450 status = |
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451 WPValidateArgType(&value, BACNET_APPLICATION_TAG_UNSIGNED_INT, |
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452 &wp_data->error_class, &wp_data->error_code); |
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453 if (!status) { |
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454 wp_data->error_class = ERROR_CLASS_PROPERTY; |
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455 wp_data->error_code = ERROR_CODE_INVALID_DATA_TYPE; |
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456 status = false; // not really necessary here. |
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457 } else { |
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458 if (!MSI_Descr[object_index].Out_Of_Service) { |
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459 /* input objects can only be written to when Out_Of_Service is true! */ |
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460 wp_data->error_class = ERROR_CLASS_PROPERTY; |
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461 wp_data->error_code = ERROR_CODE_WRITE_ACCESS_DENIED; |
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462 status = false; |
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463 } else { |
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464 status = |
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465 Multistate_Input_Present_Value_Set |
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466 (wp_data->object_instance, value.type.Unsigned_Int); |
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467 if (!status) { |
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468 wp_data->error_class = ERROR_CLASS_PROPERTY; |
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469 wp_data->error_code = ERROR_CODE_VALUE_OUT_OF_RANGE; |
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470 status = false; // not really necessary here. |
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471 } |
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472 } |
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473 } |
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474 break; |
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475 case PROP_OUT_OF_SERVICE: |
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476 { |
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477 bool Previous_Out_Of_Service = MSI_Descr[object_index].Out_Of_Service; |
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478 status = |
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479 WPValidateArgType(&value, BACNET_APPLICATION_TAG_BOOLEAN, |
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480 &wp_data->error_class, &wp_data->error_code); |
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481 if (status) { |
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482 MSI_Descr[object_index].Out_Of_Service = value.type.Boolean; |
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483 if (Previous_Out_Of_Service && !MSI_Descr[object_index].Out_Of_Service) |
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484 /* We have just changed from Out_of_Service -> In Service */ |
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485 /* We need to update the Present_Value to the value |
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486 * currently in the PLC... |
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487 */ |
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488 MSI_Descr[object_index].Present_Value = |
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489 *(MSI_Descr[object_index].Located_Var_ptr); |
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490 } |
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491 break; |
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492 } |
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493 case PROP_OBJECT_IDENTIFIER: |
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494 case PROP_OBJECT_NAME: |
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495 case PROP_OBJECT_TYPE: |
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496 case PROP_STATUS_FLAGS: |
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497 case PROP_EVENT_STATE: |
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498 case PROP_NUMBER_OF_STATES: |
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499 case PROP_DESCRIPTION: |
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500 case PROP_STATE_TEXT: |
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501 // case PROP_PROPERTY_LIST: |
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502 wp_data->error_class = ERROR_CLASS_PROPERTY; |
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503 wp_data->error_code = ERROR_CODE_WRITE_ACCESS_DENIED; |
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504 break; |
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505 default: |
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506 wp_data->error_class = ERROR_CLASS_PROPERTY; |
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507 wp_data->error_code = ERROR_CODE_UNKNOWN_PROPERTY; |
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508 break; |
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509 } |
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510 |
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511 return status; |
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512 } |
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513 |
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514 |
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515 |
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516 |
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517 |
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518 /********************************************/ |
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519 /** Functions required for Beremiz plugin **/ |
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520 /********************************************/ |
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521 |
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522 |
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523 |
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524 void Multistate_Input_Copy_Present_Value_to_Located_Var(void) { |
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525 unsigned i; |
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526 for (i = 0; i < MAX_MULTISTATE_INPUTS; i++) { |
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527 // decouple PLC's Located Variable from Bacnet Object's Present Value if Out_Of_Service is true |
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528 if (MSI_Descr[i].Out_Of_Service) |
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529 continue; |
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530 |
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531 // copy the value |
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532 *(MSI_Descr[i].Located_Var_ptr) = Multistate_Input_Present_Value(MSI_Descr[i].Object_Identifier); |
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533 } |
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534 } |
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535 |
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536 |
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537 |
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538 void Multistate_Input_Copy_Located_Var_to_Present_Value(void) { |
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539 unsigned i; |
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540 for (i = 0; i < MAX_MULTISTATE_INPUTS; i++) { |
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541 // decouple PLC's Located Variable from Bacnet Object's Present Value if Out_Of_Service is true |
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542 if (MSI_Descr[i].Out_Of_Service) |
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543 continue; |
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544 |
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545 // Make sure local device does not set Present_Value to 0, nor higher than Number_Of_States |
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546 if ((*(MSI_Descr[i].Located_Var_ptr) > MSI_Descr[i].Number_Of_States) || |
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547 (*(MSI_Descr[i].Located_Var_ptr) == 0)) |
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548 continue; |
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549 |
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550 // Everything seems to be OK. Copy the value |
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551 MSI_Descr[i].Present_Value = *(MSI_Descr[i].Located_Var_ptr); |
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552 } |
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553 } |
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554 |
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555 |
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556 |