diff -r 92f02bb17c7e -r 6dddf3070806 bacnet/runtime/ai.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/bacnet/runtime/ai.c Fri Jun 08 13:28:00 2018 +0200 @@ -0,0 +1,497 @@ +/************************************************************************** +* +* Copyright (C) 2006 Steve Karg +* Copyright (C) 2011 Krzysztof Malorny +* Copyright (C) 2017 Mario de Sousa +* +* Permission is hereby granted, free of charge, to any person obtaining +* a copy of this software and associated documentation files (the +* "Software"), to deal in the Software without restriction, including +* without limitation the rights to use, copy, modify, merge, publish, +* distribute, sublicense, and/or sell copies of the Software, and to +* permit persons to whom the Software is furnished to do so, subject to +* the following conditions: +* +* The above copyright notice and this permission notice shall be included +* in all copies or substantial portions of the Software. +* +* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. +* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY +* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, +* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE +* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +* +*********************************************************************/ + +/* Analog Input Objects - customize for your use */ + +#include +#include +#include +#include +#include /* NAN maro */ + +#include "config_bacnet_for_beremiz_%(locstr)s.h" /* the custom configuration for beremiz plugin */ +#include "bacdef.h" +#include "bacdcode.h" +#include "bacenum.h" +#include "bacapp.h" +#include "bactext.h" +#include "device_%(locstr)s.h" +#include "handlers.h" +#include "ai_%(locstr)s.h" + + + +/* initial value for present_value property of each object */ +#define AI_VALUE_INIT (0) + +/* The IEC 61131-3 located variables mapped onto the Analog Input objects of BACnet protocol */ +%(AI_lvars)s + + +/* The array where we keep all the state related to the Analog Input Objects */ +#define MAX_ANALOG_INPUTS %(AI_count)s +static ANALOG_INPUT_DESCR AI_Descr[MAX_ANALOG_INPUTS] = { +%(AI_param)s +}; + + + +/* These three arrays are used by the ReadPropertyMultiple handler, + * as well as to initialize the XXX_Property_List used by the + * Property List (PROP_PROPERTY_LIST) property. + */ +static const int Analog_Input_Properties_Required[] = { + /* (1) Currently Supported */ + /* (2) Required by standard ASHRAE 135-2016 */ + /*(1)(2) */ + PROP_OBJECT_IDENTIFIER, /* R R ( 75) */ + PROP_OBJECT_NAME, /* R R ( 77) */ + PROP_OBJECT_TYPE, /* R R ( 79) */ + PROP_PRESENT_VALUE, /* W R ( 85) */ + PROP_STATUS_FLAGS, /* R R (111) */ + PROP_EVENT_STATE, /* R R ( 36) */ + PROP_OUT_OF_SERVICE, /* W R ( 81) */ + PROP_UNITS, /* W R (117) */ +// PROP_PROPERTY_LIST, /* R R (371) */ + -1 +}; + +static const int Analog_Input_Properties_Optional[] = { + /* (1) Currently Supported */ + /* (2) Required by standard ASHRAE 135-2016 */ + /*(1)(2) */ + PROP_DESCRIPTION, /* R O ( 28) */ + -1 +}; + +static const int Analog_Input_Properties_Proprietary[] = { + -1 +}; + +/* This array stores the PROPERTY_LIST which may be read by clients. + * End of list is marked by following the last element with the value '-1' + * + * It is initialized by Analog_Inputs_Init() based off the values + * stored in Analog_Input_Properties_Required + * Analog_Input_Properties_Optional + * Analog_Input_Properties_Proprietary + */ +/* TODO: Allocate memory for this array with malloc() at startup */ +static int Analog_Input_Properties_List[64]; + + + +/********************************************************/ +/** Callback functions. **/ +/** Functions required by BACnet devie implementation. **/ +/********************************************************/ + + +/* This is a callback function. Callback set in My_Object_Table[] array declared in device.c, */ +void Analog_Input_Property_Lists( + const int **pRequired, + const int **pOptional, + const int **pProprietary) +{ + if (pRequired) + *pRequired = Analog_Input_Properties_Required; + if (pOptional) + *pOptional = Analog_Input_Properties_Optional; + if (pProprietary) + *pProprietary = Analog_Input_Properties_Proprietary; + + return; +} + + +/* This is a callback function. Callback set in My_Object_Table[] array declared in device.c, */ +void Analog_Input_Init( + void) +{ + unsigned i, j; + static bool initialized = false; + + if (!initialized) { + initialized = true; + + /* initialize the Analog_Input_Properties_List array */ + int len = 0; + len += BACnet_Init_Properties_List(Analog_Input_Properties_List + len, + Analog_Input_Properties_Required); + len += BACnet_Init_Properties_List(Analog_Input_Properties_List + len, + Analog_Input_Properties_Optional); + len += BACnet_Init_Properties_List(Analog_Input_Properties_List + len, + Analog_Input_Properties_Proprietary); + + for (i = 0; i < MAX_ANALOG_INPUTS; i++) { + // MJS: the following line in th original demo code was commented out so we do not + // overwrite the initial values configured by the user in beremiz IDE + // memset(&AI_Descr[i], 0x00, sizeof(ANALOG_INPUT_DESCR)); + AI_Descr[i].Present_Value = AI_VALUE_INIT; + AI_Descr[i].Out_Of_Service = 0; + AI_Descr[i].Event_State = 0; +// AI_Descr[i].Units = UNITS_NO_UNITS; + } + } +} + + + + +/* validate that the given instance exists */ +/* This is a callback function. Callback set in My_Object_Table[] array declared in device.c, */ +bool Analog_Input_Valid_Instance( + uint32_t object_instance) +{ + return (Analog_Input_Instance_To_Index(object_instance) < MAX_ANALOG_INPUTS); +} + +/* the number of Analog Input Objects */ +/* This is a callback function. Callback set in My_Object_Table[] array declared in device.c, */ +unsigned Analog_Input_Count(void) {return MAX_ANALOG_INPUTS;} + + +/* returns the instance (i.e. Object Identifier) that correlates to the correct index */ +/* This is a callback function. Callback set in My_Object_Table[] array declared in device.c, */ +uint32_t Analog_Input_Index_To_Instance(unsigned index) {return AI_Descr[index].Object_Identifier;} + + + +/* returns the index that correlates to the correct instance number (Object Identifier) */ +unsigned Analog_Input_Instance_To_Index( + uint32_t object_instance) +{ + unsigned index = 0; + + for (index = 0; index < MAX_ANALOG_INPUTS; index++) + if (object_instance == AI_Descr[index].Object_Identifier) + return index; + + /* error, this object ID is not in our list! */ + return MAX_ANALOG_INPUTS; +} + + + + +float Analog_Input_Present_Value( + uint32_t object_instance) +{ + float value = AI_VALUE_INIT; + unsigned index = 0; + unsigned i = 0; + + index = Analog_Input_Instance_To_Index(object_instance); + if (index < MAX_ANALOG_INPUTS) + value = AI_Descr[index].Present_Value; + + return value; +} + + + + +/* note: the object name must be unique within this device */ +/* This is a callback function. Callback set in My_Object_Table[] array declared in device.c, */ +bool Analog_Input_Object_Name( + uint32_t object_instance, + BACNET_CHARACTER_STRING * object_name) +{ + bool status = false; + unsigned index = Analog_Input_Instance_To_Index(object_instance); + + if (index < MAX_ANALOG_INPUTS) + status = characterstring_init_ansi(object_name, AI_Descr[index].Object_Name); + + return status; +} + + + +bool Analog_Input_Object_Description( + uint32_t object_instance, + BACNET_CHARACTER_STRING * object_name) +{ + bool status = false; + unsigned index = Analog_Input_Instance_To_Index(object_instance); + + if (index < MAX_ANALOG_INPUTS) + status = characterstring_init_ansi(object_name, AI_Descr[index].Description); + + return status; +} + + + +/* return apdu len, or BACNET_STATUS_ERROR on error */ +/* This is a callback function. Callback set in My_Object_Table[] array declared in device.c, */ +int Analog_Input_Read_Property( + BACNET_READ_PROPERTY_DATA * rpdata) +{ + int apdu_len = 0; /* return value */ + BACNET_BIT_STRING bit_string; + BACNET_CHARACTER_STRING char_string; + float real_value = (float) 1.414; + unsigned object_index = 0; + bool state = false; + uint8_t *apdu = NULL; + + if ((rpdata == NULL) || (rpdata->application_data == NULL) || + (rpdata->application_data_len == 0)) { + return 0; + } + + apdu = rpdata->application_data; + + object_index = Analog_Input_Instance_To_Index(rpdata->object_instance); + if (object_index >= MAX_ANALOG_INPUTS) { + rpdata->error_class = ERROR_CLASS_OBJECT; + rpdata->error_code = ERROR_CODE_UNKNOWN_OBJECT; + return BACNET_STATUS_ERROR; + } + + switch (rpdata->object_property) { + case PROP_OBJECT_IDENTIFIER: + apdu_len = + encode_application_object_id(&apdu[0], OBJECT_ANALOG_INPUT, + rpdata->object_instance); + break; + + case PROP_OBJECT_NAME: + Analog_Input_Object_Name(rpdata->object_instance, &char_string); + apdu_len = + encode_application_character_string(&apdu[0], &char_string); + break; + + case PROP_DESCRIPTION: + Analog_Input_Object_Description(rpdata->object_instance, &char_string); + apdu_len = + encode_application_character_string(&apdu[0], &char_string); + break; + + case PROP_OBJECT_TYPE: + apdu_len = + encode_application_enumerated(&apdu[0], OBJECT_ANALOG_INPUT); + break; + + case PROP_PRESENT_VALUE: + real_value = Analog_Input_Present_Value(rpdata->object_instance); + apdu_len = encode_application_real(&apdu[0], real_value); + break; + + case PROP_STATUS_FLAGS: + bitstring_init(&bit_string); + bitstring_set_bit(&bit_string, STATUS_FLAG_IN_ALARM, false); + bitstring_set_bit(&bit_string, STATUS_FLAG_FAULT, false); + bitstring_set_bit(&bit_string, STATUS_FLAG_OVERRIDDEN, false); + bitstring_set_bit(&bit_string, STATUS_FLAG_OUT_OF_SERVICE, + AI_Descr[object_index].Out_Of_Service); + + apdu_len = encode_application_bitstring(&apdu[0], &bit_string); + break; + + case PROP_EVENT_STATE: + apdu_len = + encode_application_enumerated(&apdu[0], EVENT_STATE_NORMAL); + break; + + case PROP_OUT_OF_SERVICE: + state = AI_Descr[object_index].Out_Of_Service; + apdu_len = encode_application_boolean(&apdu[0], state); + break; + + case PROP_UNITS: + apdu_len = + encode_application_enumerated(&apdu[0], AI_Descr[object_index].Units); + break; + +// case PROP_PROPERTY_LIST: +// BACnet_encode_array(Analog_Input_Properties_List, +// property_list_count(Analog_Input_Properties_List), +// retfalse, encode_application_enumerated); +// break; + default: + rpdata->error_class = ERROR_CLASS_PROPERTY; + rpdata->error_code = ERROR_CODE_UNKNOWN_PROPERTY; + apdu_len = BACNET_STATUS_ERROR; + break; + } + /* only array properties can have array options */ + if ((apdu_len >= 0) && + (rpdata->object_property != PROP_EVENT_TIME_STAMPS) && +// (rpdata->object_property != PROP_PROPERTY_LIST) && + (rpdata->array_index != BACNET_ARRAY_ALL)) { + rpdata->error_class = ERROR_CLASS_PROPERTY; + rpdata->error_code = ERROR_CODE_PROPERTY_IS_NOT_AN_ARRAY; + apdu_len = BACNET_STATUS_ERROR; + } + + return apdu_len; +} + + + + +/* returns true if successful */ +/* This is a callback function. Callback set in My_Object_Table[] array declared in device.c, */ +bool Analog_Input_Write_Property( + BACNET_WRITE_PROPERTY_DATA * wp_data) +{ + bool status = false; /* return value */ + unsigned int object_index = 0; + int len = 0; + BACNET_APPLICATION_DATA_VALUE value; + ANALOG_INPUT_DESCR *CurrentAI; + + /* decode the some of the request */ + len = + bacapp_decode_application_data(wp_data->application_data, + wp_data->application_data_len, &value); + /* FIXME: len < application_data_len: more data? */ + if (len < 0) { + /* error while decoding - a value larger than we can handle */ + wp_data->error_class = ERROR_CLASS_PROPERTY; + wp_data->error_code = ERROR_CODE_VALUE_OUT_OF_RANGE; + return false; + } + if ((wp_data->object_property != PROP_EVENT_TIME_STAMPS) && + (wp_data->array_index != BACNET_ARRAY_ALL)) { + /* only array properties can have array options */ + wp_data->error_class = ERROR_CLASS_PROPERTY; + wp_data->error_code = ERROR_CODE_PROPERTY_IS_NOT_AN_ARRAY; + return false; + } + object_index = Analog_Input_Instance_To_Index(wp_data->object_instance); + if (object_index < MAX_ANALOG_INPUTS) + CurrentAI = &AI_Descr[object_index]; + else + return false; + + switch (wp_data->object_property) { + case PROP_PRESENT_VALUE: + status = + WPValidateArgType(&value, BACNET_APPLICATION_TAG_REAL, + &wp_data->error_class, &wp_data->error_code); + if (!status) { + wp_data->error_class = ERROR_CLASS_PROPERTY; + wp_data->error_code = ERROR_CODE_VALUE_OUT_OF_RANGE; + status = false; // not really necessary here. + } else { + if (!AI_Descr[object_index].Out_Of_Service) { + /* input objects can only be written to when Out_Of_Service is true! */ + wp_data->error_class = ERROR_CLASS_PROPERTY; + wp_data->error_code = ERROR_CODE_WRITE_ACCESS_DENIED; + status = false; + } else { + AI_Descr[object_index].Present_Value = value.type.Real; + status = true; + } + } + break; + + case PROP_OUT_OF_SERVICE: + { + bool Previous_Out_Of_Service = CurrentAI->Out_Of_Service; + status = + WPValidateArgType(&value, BACNET_APPLICATION_TAG_BOOLEAN, + &wp_data->error_class, &wp_data->error_code); + if (status) { + CurrentAI->Out_Of_Service = value.type.Boolean; + if (Previous_Out_Of_Service && !CurrentAI->Out_Of_Service) + /* We have just changed from Out_of_Service -> In Service */ + /* We need to update the Present_Value to the value + * currently in the PLC... + */ + CurrentAI->Present_Value = *(CurrentAI->Located_Var_ptr); + } + break; + } + + case PROP_UNITS: + status = + WPValidateArgType(&value, BACNET_APPLICATION_TAG_ENUMERATED, + &wp_data->error_class, &wp_data->error_code); + if (status) { + CurrentAI->Units = value.type.Enumerated; + } + break; + + case PROP_OBJECT_IDENTIFIER: + case PROP_OBJECT_NAME: + case PROP_OBJECT_TYPE: + case PROP_STATUS_FLAGS: + case PROP_EVENT_STATE: + case PROP_DESCRIPTION: +// case PROP_PROPERTY_LIST: + wp_data->error_class = ERROR_CLASS_PROPERTY; + wp_data->error_code = ERROR_CODE_WRITE_ACCESS_DENIED; + break; + default: + wp_data->error_class = ERROR_CLASS_PROPERTY; + wp_data->error_code = ERROR_CODE_UNKNOWN_PROPERTY; + break; + } + + return status; +} + + + + + + + +/********************************************/ +/** Functions required for Beremiz plugin **/ +/********************************************/ + +void Analog_Input_Copy_Present_Value_to_Located_Var(void) { + unsigned i; + for (i = 0; i < MAX_ANALOG_INPUTS; i++) { + // decouple PLC's Located Variable from Bacnet Object's Present Value if Out_Of_Service is true + if (AI_Descr[i].Out_Of_Service) + continue; + + // copy the value + *(AI_Descr[i].Located_Var_ptr) = Analog_Input_Present_Value(AI_Descr[i].Object_Identifier); + } +} + + + +void Analog_Input_Copy_Located_Var_to_Present_Value(void) { + unsigned i; + for (i = 0; i < MAX_ANALOG_INPUTS; i++) { + // decouple PLC's Located Variable from Bacnet Object's Present Value if Out_Of_Service is true + if (AI_Descr[i].Out_Of_Service) + continue; + + // copy the value + AI_Descr[i].Present_Value = *(AI_Descr[i].Located_Var_ptr); + } +} +