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/**************************************************************************

     2

*

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* Copyright (C) 2012 Steve Karg <skarg@users.sourceforge.net>

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* Copyright (C) 2017 Mario de Sousa <msousa@fe.up.pt>

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*

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* Permission is hereby granted, free of charge, to any person obtaining

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* a copy of this software and associated documentation files (the

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* "Software"), to deal in the Software without restriction, including

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* without limitation the rights to use, copy, modify, merge, publish,

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* distribute, sublicense, and/or sell copies of the Software, and to

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* permit persons to whom the Software is furnished to do so, subject to

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* the following conditions:

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*

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* The above copyright notice and this permission notice shall be included

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* in all copies or substantial portions of the Software.

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*

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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.

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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY

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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,

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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE

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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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*

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*********************************************************************/

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    27

/* Multi-state Input Objects */

    28

    29

#include <stdbool.h>

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#include <stdint.h>

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#include <stdio.h>

    32

    33

#include "config_bacnet_for_beremiz_%(locstr)s.h"     /* the custom configuration for beremiz pluginh  */

    34

#include "bacdef.h"

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#include "bacdcode.h"

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#include "bacenum.h"

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#include "bacapp.h"

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#include "rp.h"

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#include "wp.h"

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#include "msi_%(locstr)s.h"

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#include "handlers.h"

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    43

    44

/* initial value for present_value property of each object */ 

    45

#define MSI_VALUE_INIT (1)

    46

    47

/* The IEC 61131-3 located variables mapped onto the Multi-state Input objects of BACnet protocol */

    48

%(MSI_lvars)s

    49

    50

    51

/* The array where we keep all the state related to the Multi-state Input Objects */

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#define MAX_MULTISTATE_INPUTS %(MSI_count)s

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static MULTISTATE_INPUT_DESCR MSI_Descr[MAX_MULTISTATE_INPUTS] = {

    54

%(MSI_param)s

    55

};

    56

    57

    58

    59

/* These three arrays are used by the ReadPropertyMultiple handler,

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 * as well as to initialize the XXX_Property_List used by the 

    61

 * Property List (PROP_PROPERTY_LIST) property.

    62

 */

    63

static const int Multistate_Input_Properties_Required[] = {

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 /* (1) Currently Supported                  */

    65

 /* (2) Required by standard ASHRAE 135-2016 */

    66

                              /*(1)(2)      */

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    PROP_OBJECT_IDENTIFIER,   /* R  R ( 75) */

    68

    PROP_OBJECT_NAME,         /* R  R ( 77) */

    69

    PROP_OBJECT_TYPE,         /* R  R ( 79) */

    70

    PROP_PRESENT_VALUE,       /* W  R ( 85) */

    71

    PROP_STATUS_FLAGS,        /* R  R (111) */

    72

    PROP_EVENT_STATE,         /* R  R ( 36) */

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    PROP_OUT_OF_SERVICE,      /* W  R ( 81) */

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    PROP_NUMBER_OF_STATES,    /* R  R ( 74) */

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//  PROP_PROPERTY_LIST,       /* R  R (371) */

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    -1

    77

};

    78

    79

static const int Multistate_Input_Properties_Optional[] = {

    80

 /* (1) Currently Supported                  */

    81

 /* (2) Required by standard ASHRAE 135-2016 */

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                              /*(1)(2)      */

    83

    PROP_DESCRIPTION,         /* R  O ( 28) */

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    PROP_STATE_TEXT,          /* R  O (110) */

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    -1

    86

};

    87

    88

static const int Multistate_Input_Properties_Proprietary[] = {

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    -1

    90

};

    91

    92

    93

/* This array stores the PROPERTY_LIST which may be read by clients.

    94

 * End of list is marked by following the last element with the value '-1'

    95

 * 

    96

 * It is initialized by Multistate_Input_Init() based off the values

    97

 * stored in Multistate_Input_Properties_Required 

    98

 *           Multistate_Input_Properties_Optional

    99

 *           Multistate_Input_Properties_Proprietary

   100

 */

   101

/* TODO: Allocate memory for this array with malloc() at startup */

   102

static int Multistate_Input_Properties_List[64];

   103

   104

   105

   106

   107

   108

/********************************************************/

   109

/**                  Callback functions.               **/

   110

/** Functions required by BACnet devie implementation. **/

   111

/********************************************************/

   112

   113

   114

/* This is a callback function. Callback set in My_Object_Table[] array declared in device.c,  */

   115

void Multistate_Input_Property_Lists(

   116

    const int **pRequired,

   117

    const int **pOptional,

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    const int **pProprietary)

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{

   120

    if (pRequired)

   121

        *pRequired = Multistate_Input_Properties_Required;

   122

    if (pOptional)

   123

        *pOptional = Multistate_Input_Properties_Optional;

   124

    if (pProprietary)

   125

        *pProprietary = Multistate_Input_Properties_Proprietary;

   126

   127

    return;

   128

}

   129

   130

   131

   132

/* This is a callback function. Callback set in My_Object_Table[] array declared in device.c,  */

   133

void Multistate_Input_Init(

   134

    void)

   135

{

   136

    unsigned int i, j;

   137

   138

    /* initialize the Multistate_Input_Properties_List array */

   139

    int len = 0;

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    len += BACnet_Init_Properties_List(Multistate_Input_Properties_List + len,

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                                       Multistate_Input_Properties_Required);

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    len += BACnet_Init_Properties_List(Multistate_Input_Properties_List + len,

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                                       Multistate_Input_Properties_Optional);

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    len += BACnet_Init_Properties_List(Multistate_Input_Properties_List + len,

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                                       Multistate_Input_Properties_Proprietary);

   146

   147

    /* initialize all the analog output priority arrays to NULL */

   148

    for (i = 0; i < MAX_MULTISTATE_INPUTS; i++) {

   149

        MSI_Descr[i].Present_Value = MSI_VALUE_INIT;

   150

        for (j = 0; j < MSI_Descr[i].Number_Of_States; j++) {

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            sprintf(MSI_Descr[i].State_Text[j], "State %%d", j+1);

   152

        }

   153

    }

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    return;

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}

   156

   157

   158

   159

/* validate that the given instance exists */

   160

/* This is a callback function. Callback set in My_Object_Table[] array declared in device.c,  */

   161

bool Multistate_Input_Valid_Instance(

   162

    uint32_t object_instance)

   163

{

   164

    // fprintf(stderr, "BACnet plugin: Multistate_Input_Valid_Instance(obj_ID=%%u) called!\n", object _instance);

   165

    return (Multistate_Input_Instance_To_Index(object_instance) < MAX_MULTISTATE_INPUTS);

   166

}

   167

   168

   169

/* the number of Multistate Value Objects */

   170

/* This is a callback function. Callback set in My_Object_Table[] array declared in device.c,  */

   171

unsigned Multistate_Input_Count(void) {return MAX_MULTISTATE_INPUTS;}

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   173

   174

/* returns the instance (i.e. Object Identifier) that correlates to the correct index */

   175

/* This is a callback function. Callback set in My_Object_Table[] array declared in device.c,  */

   176

uint32_t Multistate_Input_Index_To_Instance(unsigned index) {return MSI_Descr[index].Object_Identifier;}

   177

   178

   179

   180

   181

   182

   183

/* returns the index that correlates to the correct instance number (Object Identifier) */

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unsigned Multistate_Input_Instance_To_Index(

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    uint32_t object_instance)

   186

{

   187

    unsigned index = 0;

   188

   189

    for (index = 0; index < MAX_MULTISTATE_INPUTS; index++)

   190

        if (object_instance == MSI_Descr[index].Object_Identifier)

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            return index;

   192

   193

    /* error, this object ID is not in our list! */

   194

    return MAX_MULTISTATE_INPUTS;

   195

}

   196

   197

   198

   199

   200

   201

uint32_t Multistate_Input_Present_Value(

   202

    uint32_t object_instance)

   203

{

   204

    uint32_t value = MSI_VALUE_INIT;

   205

    unsigned index = 0; /* offset from instance lookup */

   206

   207

    index = Multistate_Input_Instance_To_Index(object_instance);

   208

    if (index < MAX_MULTISTATE_INPUTS)

   209

        value = MSI_Descr[index].Present_Value;

   210

   211

    return value;

   212

}

   213

   214

   215

   216

bool Multistate_Input_Present_Value_Set(

   217

    uint32_t object_instance,

   218

    uint32_t value)

   219

{

   220

    unsigned index = 0; /* offset from instance lookup */

   221

   222

    index = Multistate_Input_Instance_To_Index(object_instance);

   223

    if (index >= MAX_MULTISTATE_INPUTS)

   224

      return false;

   225

   226

    if ((value == 0) || (value > MSI_Descr[index].Number_Of_States))

   227

      return false;

   228

   229

    MSI_Descr[index].Present_Value = (uint8_t) value;

   230

    return true;

   231

}

   232

   233

   234

   235

   236

bool Multistate_Input_Out_Of_Service(

   237

    uint32_t object_instance)

   238

{

   239

    bool value = false;

   240

    unsigned index = 0;

   241

   242

    index = Multistate_Input_Instance_To_Index(object_instance);

   243

    if (index < MAX_MULTISTATE_INPUTS) {

   244

        value = MSI_Descr[index].Out_Of_Service;

   245

    }

   246

   247

    return value;

   248

}

   249

   250

   251

   252

void Multistate_Input_Out_Of_Service_Set(

   253

    uint32_t object_instance,

   254

    bool value)

   255

{

   256

    unsigned index = 0;

   257

   258

    index = Multistate_Input_Instance_To_Index(object_instance);

   259

    if (index < MAX_MULTISTATE_INPUTS) {

   260

        MSI_Descr[index].Out_Of_Service = value;

   261

    }

   262

   263

    return;

   264

}

   265

   266

   267

   268

static char *Multistate_Input_Description(

   269

    uint32_t object_instance)

   270

{

   271

    unsigned index = 0; /* offset from instance lookup */

   272

    char *pName = NULL; /* return value */

   273

   274

    index = Multistate_Input_Instance_To_Index(object_instance);

   275

    if (index < MAX_MULTISTATE_INPUTS) {

   276

        pName = MSI_Descr[index].Description;

   277

    }

   278

   279

    return pName;

   280

}

   281

   282

   283

   284

/* This is a callback function. Callback set in My_Object_Table[] array declared in device.c,  */

   285

bool Multistate_Input_Object_Name(

   286

    uint32_t object_instance,

   287

    BACNET_CHARACTER_STRING * object_name)

   288

{

   289

    unsigned index = 0; /* offset from instance lookup */

   290

    bool status = false;

   291

   292

    index = Multistate_Input_Instance_To_Index(object_instance);

   293

    if (index < MAX_MULTISTATE_INPUTS) {

   294

        status = characterstring_init_ansi(object_name, MSI_Descr[index].Object_Name);

   295

    }

   296

   297

    return status;

   298

}

   299

   300

   301

   302

/* return apdu len, or BACNET_STATUS_ERROR on error */

   303

/* This is a callback function. Callback set in My_Object_Table[] array declared in device.c,  */

   304

int Multistate_Input_Read_Property(

   305

    BACNET_READ_PROPERTY_DATA * rpdata)

   306

{

   307

    int len = 0;

   308

    int apdu_len = 0;   /* return value */

   309

    BACNET_BIT_STRING bit_string;

   310

    BACNET_CHARACTER_STRING char_string;

   311

    uint32_t present_value = 0;

   312

    unsigned object_index = 0;

   313

    unsigned i = 0;

   314

    bool state = false;

   315

    uint8_t *apdu = NULL;

   316

   317

    if ((rpdata == NULL) || (rpdata->application_data == NULL) ||

   318

        (rpdata->application_data_len == 0)) {

   319

        return 0;

   320

    }

   321

   322

    object_index = Multistate_Input_Instance_To_Index(rpdata->object_instance);

   323

    if (object_index >= MAX_MULTISTATE_INPUTS) {

   324

        rpdata->error_class = ERROR_CLASS_OBJECT;

   325

        rpdata->error_code  = ERROR_CODE_UNKNOWN_OBJECT;

   326

        return BACNET_STATUS_ERROR;

   327

    }

   328

   329

    apdu = rpdata->application_data;

   330

    switch (rpdata->object_property) {

   331

        case PROP_OBJECT_IDENTIFIER:

   332

            apdu_len =

   333

                encode_application_object_id(&apdu[0],

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                OBJECT_MULTI_STATE_INPUT, rpdata->object_instance);

   335

            break;

   336

        case PROP_OBJECT_NAME:

   337

            Multistate_Input_Object_Name(rpdata->object_instance,

   338

                &char_string);

   339

            apdu_len =

   340

                encode_application_character_string(&apdu[0], &char_string);

   341

            break;

   342

        case PROP_DESCRIPTION:

   343

            characterstring_init_ansi(&char_string,

   344

                Multistate_Input_Description(rpdata->object_instance));

   345

            apdu_len =

   346

                encode_application_character_string(&apdu[0], &char_string);

   347

            break;

   348

        case PROP_OBJECT_TYPE:

   349

            apdu_len =

   350

                encode_application_enumerated(&apdu[0],

   351

                OBJECT_MULTI_STATE_INPUT);

   352

            break;

   353

        case PROP_PRESENT_VALUE:

   354

            present_value =

   355

                Multistate_Input_Present_Value(rpdata->object_instance);

   356

            apdu_len = encode_application_unsigned(&apdu[0], present_value);

   357

            break;

   358

        case PROP_STATUS_FLAGS:

   359

            /* note: see the details in the standard on how to use these */

   360

            bitstring_init(&bit_string);

   361

            bitstring_set_bit(&bit_string, STATUS_FLAG_IN_ALARM, false);

   362

            bitstring_set_bit(&bit_string, STATUS_FLAG_FAULT, false);

   363

            bitstring_set_bit(&bit_string, STATUS_FLAG_OVERRIDDEN, false);

   364

            if (Multistate_Input_Out_Of_Service(rpdata->object_instance)) {

   365

                bitstring_set_bit(&bit_string, STATUS_FLAG_OUT_OF_SERVICE,

   366

                    true);

   367

            } else {

   368

                bitstring_set_bit(&bit_string, STATUS_FLAG_OUT_OF_SERVICE,

   369

                    false);

   370

            }

   371

            apdu_len = encode_application_bitstring(&apdu[0], &bit_string);

   372

            break;

   373

        case PROP_EVENT_STATE:

   374

            /* note: see the details in the standard on how to use this */

   375

            apdu_len =

   376

                encode_application_enumerated(&apdu[0], EVENT_STATE_NORMAL);

   377

            break;

   378

        case PROP_OUT_OF_SERVICE:

   379

            state = MSI_Descr[object_index].Out_Of_Service;

   380

            apdu_len = encode_application_boolean(&apdu[0], state);

   381

            break;

   382

        case PROP_NUMBER_OF_STATES:

   383

            apdu_len =

   384

                encode_application_unsigned(&apdu[apdu_len],

   385

                MSI_Descr[object_index].Number_Of_States);

   386

            break;

   387

        case PROP_STATE_TEXT:

   388

            BACnet_encode_array(MSI_Descr[object_index].State_Text,

   389

                                MSI_Descr[object_index].Number_Of_States,

   390

                                retfalse, BACnet_encode_character_string);

   391

            break;

   392

//      case PROP_PROPERTY_LIST:

   393

//          BACnet_encode_array(Multistate_Input_Properties_List,

   394

//                              property_list_count(Multistate_Input_Properties_List),

   395

//                              retfalse, encode_application_enumerated);

   396

//          break;

   397

        default:

   398

            rpdata->error_class = ERROR_CLASS_PROPERTY;

   399

            rpdata->error_code = ERROR_CODE_UNKNOWN_PROPERTY;

   400

            apdu_len = BACNET_STATUS_ERROR;

   401

            break;

   402

    }

   403

    /*  only array properties can have array options */

   404

    if ((apdu_len >= 0) && (rpdata->object_property != PROP_STATE_TEXT) &&

   405

//      (rpdata->object_property != PROP_PROPERTY_LIST) &&

   406

        (rpdata->array_index != BACNET_ARRAY_ALL)) {

   407

        rpdata->error_class = ERROR_CLASS_PROPERTY;

   408

        rpdata->error_code = ERROR_CODE_PROPERTY_IS_NOT_AN_ARRAY;

   409

        apdu_len = BACNET_STATUS_ERROR;

   410

    }

   411

   412

    return apdu_len;

   413

}

   414

   415

/* returns true if successful */

   416

/* This is a callback function. Callback set in My_Object_Table[] array declared in device.c,  */

   417

bool Multistate_Input_Write_Property(

   418

    BACNET_WRITE_PROPERTY_DATA * wp_data)

   419

{

   420

    bool status = false;        /* return value */

   421

    int len = 0;

   422

    unsigned object_index = 0;

   423

    BACNET_APPLICATION_DATA_VALUE value;

   424

   425

    /* decode the some of the request */

   426

    len =

   427

        bacapp_decode_application_data(wp_data->application_data,

   428

        wp_data->application_data_len, &value);

   429

    /* FIXME: len < application_data_len: more data? */

   430

    if (len < 0) {

   431

        /* error while decoding - a value larger than we can handle */

   432

        wp_data->error_class = ERROR_CLASS_PROPERTY;

   433

        wp_data->error_code = ERROR_CODE_VALUE_OUT_OF_RANGE;

   434

        return false;

   435

    }

   436

    if ((wp_data->object_property != PROP_STATE_TEXT) &&

   437

        (wp_data->array_index != BACNET_ARRAY_ALL)) {

   438

        /*  only array properties can have array options */

   439

        wp_data->error_class = ERROR_CLASS_PROPERTY;

   440

        wp_data->error_code = ERROR_CODE_PROPERTY_IS_NOT_AN_ARRAY;

   441

        return false;

   442

    }

   443

    /* No need to check whether object_index is within bounds.

   444

     * Has already been checked before Multistate_Input_Write_Property() is called

   445

     */

   446

    object_index = Multistate_Input_Instance_To_Index(wp_data->object_instance);

   447

   448

    switch (wp_data->object_property) {

   449

        case PROP_PRESENT_VALUE:

   450

            status =

   451

                WPValidateArgType(&value, BACNET_APPLICATION_TAG_UNSIGNED_INT,

   452

                &wp_data->error_class, &wp_data->error_code);

   453

            if (!status) {

   454

                wp_data->error_class = ERROR_CLASS_PROPERTY;

   455

                wp_data->error_code  = ERROR_CODE_INVALID_DATA_TYPE;

   456

                status = false; // not really necessary here.

   457

            } else {

   458

                if (!MSI_Descr[object_index].Out_Of_Service) {

   459

                    /* input objects can only be written to when Out_Of_Service is true! */

   460

                    wp_data->error_class = ERROR_CLASS_PROPERTY;

   461

                    wp_data->error_code  = ERROR_CODE_WRITE_ACCESS_DENIED;

   462

                    status = false;

   463

                } else {

   464

                    status =

   465

                        Multistate_Input_Present_Value_Set

   466

                        (wp_data->object_instance, value.type.Unsigned_Int);

   467

                    if (!status) {

   468

                        wp_data->error_class = ERROR_CLASS_PROPERTY;

   469

                        wp_data->error_code  = ERROR_CODE_VALUE_OUT_OF_RANGE;

   470

                        status = false; // not really necessary here.

   471

                    }

   472

                }

   473

            }

   474

            break;

   475

        case PROP_OUT_OF_SERVICE:

   476

        {

   477

            bool Previous_Out_Of_Service = MSI_Descr[object_index].Out_Of_Service;

   478

            status =

   479

                WPValidateArgType(&value, BACNET_APPLICATION_TAG_BOOLEAN,

   480

                &wp_data->error_class, &wp_data->error_code);

   481

            if (status) {

   482

                MSI_Descr[object_index].Out_Of_Service = value.type.Boolean;

   483

                if (Previous_Out_Of_Service && !MSI_Descr[object_index].Out_Of_Service)

   484

                    /* We have just changed from Out_of_Service -> In Service */

   485

                    /* We need to update the Present_Value to the value

   486

                     * currently in the PLC...

   487

                     */

   488

                    MSI_Descr[object_index].Present_Value =

   489

                                           *(MSI_Descr[object_index].Located_Var_ptr);

   490

            }

   491

            break;

   492

        }

   493

        case PROP_OBJECT_IDENTIFIER:

   494

        case PROP_OBJECT_NAME:

   495

        case PROP_OBJECT_TYPE:

   496

        case PROP_STATUS_FLAGS:

   497

        case PROP_EVENT_STATE:

   498

        case PROP_NUMBER_OF_STATES:

   499

        case PROP_DESCRIPTION:

   500

        case PROP_STATE_TEXT:

   501

//      case PROP_PROPERTY_LIST:

   502

            wp_data->error_class = ERROR_CLASS_PROPERTY;

   503

            wp_data->error_code = ERROR_CODE_WRITE_ACCESS_DENIED;

   504

            break;

   505

        default:

   506

            wp_data->error_class = ERROR_CLASS_PROPERTY;

   507

            wp_data->error_code = ERROR_CODE_UNKNOWN_PROPERTY;

   508

            break;

   509

    }

   510

   511

    return status;

   512

}

   513

   514

   515

   516

   517

   518

/********************************************/

   519

/** Functions required for Beremiz plugin  **/

   520

/********************************************/

   521

   522

   523

   524

void  Multistate_Input_Copy_Present_Value_to_Located_Var(void) {

   525

    unsigned i;

   526

    for (i = 0; i < MAX_MULTISTATE_INPUTS; i++) {

   527

        // decouple PLC's Located Variable from Bacnet Object's Present Value if Out_Of_Service is true

   528

        if (MSI_Descr[i].Out_Of_Service)

   529

            continue;

   530