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

     2

*

     3

* Copyright (C) 2006 Steve Karg <skarg@users.sourceforge.net>

     4

* Copyright (C) 2011 Krzysztof Malorny <malornykrzysztof@gmail.com>

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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.

    17

*

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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

    20

* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.

    21

* 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.

    25

*

    26

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

    27

    28

/* Analog Output Objects - customize for your use */

    29

    30

#include <stdbool.h>

    31

#include <stdint.h>

    32

#include <stdio.h>

    33

#include <string.h>

    34

#include <math.h>     /* NAN maro */

    35

    36

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

    37

#include "bacdef.h"

    38

#include "bacdcode.h"

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#include "bacenum.h"

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#include "bacapp.h"

    41

#include "bactext.h"

    42

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

    43

#include "handlers.h"

    44

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

    45

    46

/* we choose to have a NULL level in our system represented by */

    47

/* a particular value.  When the priorities are not in use, they */

    48

/* will be relinquished (i.e. set to the NULL level). */

    49

/* Since the values are floats, we use NAN (Not A Number) as our NULL value. */

    50

/* WARNING: Never use comparisons like 'if (value == AO_LEVEL_NULL)'

    51

 *           as it will always return false, even if both values are NAN.

    52

 *          Use instead the negated version 'if (value != AO_LEVEL_NULL)'

    53

 *           and add an 'else' to the 'if' condition if necessary.

    54

 *         However, some compilers may screw this up if they do not

    55

 *         implement IEEE 754 properly. It is probably best to stick with

    56

 *         the isnan() macro if available.

    57

 */

    58

#define AO_VALUE_NULL NAN

    59

#define AO_VALUE_IS_NULL(x)  (isnan(x))

    60

/* When all the priorities are level null, the present value returns */

    61

/* the Relinquish Default value */

    62

#define AO_VALUE_RELINQUISH_DEFAULT (0.0)

    63

    64

    65

/* The IEC 61131-3 located variables mapped onto the Analog Output objects of BACnet protocol */

    66

%(AO_lvars)s

    67

    68

    69

/* The array where we keep all the state related to the Analog Output Objects */

    70

#define MAX_ANALOG_OUTPUTS %(AO_count)s

    71

static ANALOG_OUTPUT_DESCR AO_Descr[MAX_ANALOG_OUTPUTS] = {

    72

%(AO_param)s

    73

};

    74

    75

    76

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

    77

 * as well as to initialize the XXX_Property_List used by the 

    78

 * Property List (PROP_PROPERTY_LIST) property.

    79

 */

    80

static const int Analog_Output_Properties_Required[] = {

    81

 /* (1) Currently Supported                  */

    82

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

    83

                                  /*(1)(2)      */

    84

    PROP_OBJECT_IDENTIFIER,       /* R  R ( 75) */

    85

    PROP_OBJECT_NAME,             /* R  R ( 77) */

    86

    PROP_OBJECT_TYPE,             /* R  R ( 79) */

    87

    PROP_PRESENT_VALUE,           /* W  W ( 85) */

    88

    PROP_STATUS_FLAGS,            /* R  R (111) */

    89

    PROP_EVENT_STATE,             /* R  R ( 36) */

    90

    PROP_OUT_OF_SERVICE,          /* W  R ( 81) */

    91

    PROP_UNITS,                   /* W  R (117) */

    92

    PROP_PRIORITY_ARRAY,          /* R  R ( 87) */

    93

    PROP_RELINQUISH_DEFAULT,      /* R  R (104) */    

    94

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

    95

//  PROP_CURRENT_COMMAND_PRIORITY,/* R  R (431) */   

    96

    -1

    97

};

    98

    99

static const int Analog_Output_Properties_Optional[] = {

   100

 /* (1) Currently Supported                  */

   101

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

   102

                                  /*(1)(2)      */

   103

    PROP_DESCRIPTION,             /* R  O ( 28) */

   104

    -1

   105

};

   106

   107

static const int Analog_Output_Properties_Proprietary[] = {

   108

    -1

   109

};

   110

   111

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

   112

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

   113

 * 

   114

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

   115

 * stored in Analog_Output_Properties_Required 

   116

 *           Analog_Output_Properties_Optional

   117

 *           Analog_Output_Properties_Proprietary

   118

 */

   119

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

   120

static int Analog_Output_Properties_List[64];

   121

   122

   123

   124

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

   125

/**                  Callback functions.               **/

   126

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

   127

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

   128

   129

   130

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

   131

void Analog_Output_Property_Lists(

   132

    const int **pRequired,

   133

    const int **pOptional,

   134

    const int **pProprietary)

   135

{

   136

    if (pRequired)

   137

        *pRequired = Analog_Output_Properties_Required;

   138

    if (pOptional)

   139

        *pOptional = Analog_Output_Properties_Optional;

   140

    if (pProprietary)

   141

        *pProprietary = Analog_Output_Properties_Proprietary;

   142

   143

    return;

   144

}

   145

   146

   147

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

   148

void Analog_Output_Init(

   149

    void)

   150

{

   151

    unsigned i, j;

   152

    static bool initialized = false;

   153

   154

    if (!initialized) {

   155

        initialized = true;

   156

   157

        /* initialize the Analog_Output_Properties_List array */

   158

        int len = 0;

   159

        len += BACnet_Init_Properties_List(Analog_Output_Properties_List + len,

   160

                                           Analog_Output_Properties_Required);

   161

        len += BACnet_Init_Properties_List(Analog_Output_Properties_List + len,

   162

                                           Analog_Output_Properties_Optional);

   163

        len += BACnet_Init_Properties_List(Analog_Output_Properties_List + len,

   164

                                           Analog_Output_Properties_Proprietary);

   165

   166

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

   167

            // MJS: the following line in th original demo code was commented out so we do not

   168

            //      overwrite the initial values configured by the user in beremiz IDE

   169

            // memset(&AO_Descr[i], 0x00, sizeof(ANALOG_OUTPUT_DESCR));

   170

            for (j = 0; j < BACNET_MAX_PRIORITY; j++) {

   171

                AO_Descr[i].Present_Value[j]  = AO_VALUE_NULL;

   172

            }

   173

            AO_Descr[i].Out_Of_Service = 0;

   174

            AO_Descr[i].Event_State    = 0;

   175

//          AO_Descr[i].Units = UNITS_NO_UNITS;

   176

        }

   177

    }

   178

}

   179

   180

   181

   182

   183

/* validate that the given instance exists */

   184

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

   185

bool Analog_Output_Valid_Instance(

   186

    uint32_t object_instance)

   187

{

   188

    return (Analog_Output_Instance_To_Index(object_instance) < MAX_ANALOG_OUTPUTS);

   189

}

   190

   191

/* the number of Analog Output Objects */

   192

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

   193

unsigned Analog_Output_Count(void) {return MAX_ANALOG_OUTPUTS;}

   194

   195

   196

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

   197

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

   198

uint32_t Analog_Output_Index_To_Instance(unsigned index) {return AO_Descr[index].Object_Identifier;}

   199

   200

   201

   202

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

   203

unsigned Analog_Output_Instance_To_Index(

   204

    uint32_t object_instance)

   205

{

   206

    unsigned index = 0;

   207

   208

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

   209

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

   210

            return index;

   211

   212

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

   213

    return MAX_ANALOG_OUTPUTS;

   214

}

   215

   216

   217

   218

   219

float Analog_Output_Present_Value(

   220

    uint32_t object_instance)

   221

{

   222

    float value = AO_VALUE_RELINQUISH_DEFAULT;

   223

    unsigned index = 0;

   224

    unsigned i = 0;

   225

   226

    index = Analog_Output_Instance_To_Index(object_instance);

   227

    if (index < MAX_ANALOG_OUTPUTS) {

   228

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

   229

            if (!AO_VALUE_IS_NULL(AO_Descr[index].Present_Value[i])) {

   230

                value = AO_Descr[index].Present_Value[i];

   231

                break;

   232

            }

   233

        }

   234

    }

   235

   236

    return value;

   237

}

   238

   239

   240

   241

/* returns command priority (1..16), or 0 if all priority values are at NULL */

   242

int Analog_Output_Current_Command_Priority(

   243

    uint32_t object_instance)

   244

{

   245

    unsigned index = 0;

   246

    unsigned i = 0;

   247

   248

    index = Analog_Output_Instance_To_Index(object_instance);

   249

    if (index < MAX_ANALOG_OUTPUTS) {

   250

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

   251

            if (!AO_VALUE_IS_NULL(AO_Descr[index].Present_Value[i])) {

   252

                return i+1; // +1 since priority is 1..16, and not 0..15

   253

            }

   254

        }

   255

    }

   256

    // command values in all priorities are set to NULL

   257

    return 0;

   258

}

   259

   260

   261

   262

/* For a given object instance-number, sets the present-value at a given

   263

 * priority 1..16 (except 6, see ASHRAE 135-2016, section 19.2.2)

   264

 */

   265

bool Analog_Output_Present_Value_Set(

   266

    uint32_t object_instance,

   267

    float value,

   268

    uint8_t priority)

   269

{

   270

    unsigned index = 0;

   271

   272

    index = Analog_Output_Instance_To_Index(object_instance);

   273

    if (index >= MAX_ANALOG_OUTPUTS) 

   274

      return false;

   275

    if ((priority == 0) || (priority > BACNET_MAX_PRIORITY) ||

   276

        (priority == 6 /* reserved, ASHRAE 135-2016, section 19.2.2 */))

   277

      return false;

   278

   279

    priority--;

   280

    AO_Descr[index].Present_Value[priority] = value;

   281

    return true;

   282

}

   283

   284

   285

   286

bool Analog_Output_Present_Value_Relinquish(

   287

    uint32_t object_instance,

   288

    unsigned priority)

   289

{

   290

    unsigned index = 0;

   291

   292

    index = Analog_Output_Instance_To_Index(object_instance);

   293

    if (index >= MAX_ANALOG_OUTPUTS)

   294

      return false;

   295

   296

    if ((priority == 0) || (priority > BACNET_MAX_PRIORITY) ||

   297

        (priority == 6 /* reserved, ASHRAE 135-2016, section 19.2.2 */))

   298

      return false;

   299

   300

    priority--;

   301

    AO_Descr[index].Present_Value[priority] = AO_VALUE_NULL;

   302

    return true;

   303

}

   304

   305

   306

   307

/* note: the object name must be unique within this device */

   308

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

   309

bool Analog_Output_Object_Name(

   310

    uint32_t object_instance,

   311

    BACNET_CHARACTER_STRING * object_name)

   312

{

   313

    bool    status = false;

   314

    unsigned index = Analog_Output_Instance_To_Index(object_instance);

   315

   316

    if (index < MAX_ANALOG_OUTPUTS)

   317

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

   318

   319

    return status;

   320

}

   321

   322

   323

   324

bool Analog_Output_Object_Description(

   325

    uint32_t object_instance,

   326

    BACNET_CHARACTER_STRING * object_name)

   327

{

   328

    bool    status = false;

   329

    unsigned index = Analog_Output_Instance_To_Index(object_instance);

   330

   331

    if (index < MAX_ANALOG_OUTPUTS)

   332

        status = characterstring_init_ansi(object_name, AO_Descr[index].Description);

   333

   334

    return status;    

   335

}

   336

   337

   338

   339

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

   340

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

   341

int Analog_Output_Read_Property(

   342

    BACNET_READ_PROPERTY_DATA * rpdata)

   343

{

   344

    int apdu_len = 0;   /* return value */

   345

    BACNET_BIT_STRING bit_string;

   346

    BACNET_CHARACTER_STRING char_string;

   347

    float real_value = (float) 1.414;

   348

    unsigned object_index = 0;

   349

    bool state = false;

   350

    uint8_t *apdu = NULL;

   351

   352

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

   353

        (rpdata->application_data_len == 0)) {

   354

        return 0;

   355

    }

   356

   357

    apdu = rpdata->application_data;

   358

   359

    object_index = Analog_Output_Instance_To_Index(rpdata->object_instance);

   360

    if (object_index >= MAX_ANALOG_OUTPUTS) {

   361

        rpdata->error_class = ERROR_CLASS_OBJECT;

   362

        rpdata->error_code  = ERROR_CODE_UNKNOWN_OBJECT;

   363

        return BACNET_STATUS_ERROR;

   364

    }

   365

   366

    switch (rpdata->object_property) {

   367

        case PROP_OBJECT_IDENTIFIER:

   368

            apdu_len =

   369

                encode_application_object_id(&apdu[0], OBJECT_ANALOG_OUTPUT,

   370

                rpdata->object_instance);

   371

            break;

   372

   373

        case PROP_OBJECT_NAME:

   374

            Analog_Output_Object_Name(rpdata->object_instance, &char_string);

   375

            apdu_len =

   376

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

   377

            break;

   378

   379

        case PROP_DESCRIPTION:

   380

            Analog_Output_Object_Description(rpdata->object_instance, &char_string);

   381

            apdu_len =

   382

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

   383

            break;

   384

   385

        case PROP_OBJECT_TYPE:

   386

            apdu_len =

   387

                encode_application_enumerated(&apdu[0], OBJECT_ANALOG_OUTPUT);

   388

            break;

   389

   390

        case PROP_PRESENT_VALUE:

   391

            real_value = Analog_Output_Present_Value(rpdata->object_instance);

   392

            apdu_len = encode_application_real(&apdu[0], real_value);

   393

            break;

   394

   395

        case PROP_STATUS_FLAGS:

   396

            bitstring_init(&bit_string);

   397

            bitstring_set_bit(&bit_string, STATUS_FLAG_IN_ALARM, false);

   398

            bitstring_set_bit(&bit_string, STATUS_FLAG_FAULT, false);

   399

            bitstring_set_bit(&bit_string, STATUS_FLAG_OVERRIDDEN, false);

   400

            bitstring_set_bit(&bit_string, STATUS_FLAG_OUT_OF_SERVICE,

   401

                AO_Descr[object_index].Out_Of_Service);

   402

   403

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

   404

            break;

   405

   406

        case PROP_EVENT_STATE:

   407

            apdu_len =

   408

                encode_application_enumerated(&apdu[0], EVENT_STATE_NORMAL);

   409

            break;

   410

   411

        case PROP_OUT_OF_SERVICE:

   412

            state = AO_Descr[object_index].Out_Of_Service;

   413

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

   414

            break;

   415

   416

        case PROP_PRIORITY_ARRAY:

   417

            BACnet_encode_array(AO_Descr[object_index].Present_Value,

   418

                                BACNET_MAX_PRIORITY,

   419

                                AO_VALUE_IS_NULL,

   420

                                encode_application_real)

   421

            break;

   422

   423

//      case PROP_CURRENT_COMMAND_PRIORITY: {

   424

//          unsigned i = Analog_Output_Current_Command_Priority(rpdata->object_instance);

   425

//          if (i == 0)  apdu_len = encode_application_null    (&apdu[0]);

   426

//          else         apdu_len = encode_application_unsigned(&apdu[0], i);

   427

//          break;

   428

//      }

   429

   430

        case PROP_RELINQUISH_DEFAULT:

   431

            real_value = AO_VALUE_RELINQUISH_DEFAULT;

   432

            apdu_len = encode_application_real(&apdu[0], real_value);

   433

            break;

   434

   435

        case PROP_UNITS:

   436

            apdu_len =

   437

                encode_application_enumerated(&apdu[0], AO_Descr[object_index].Units);

   438

            break;

   439

   440

//      case PROP_PROPERTY_LIST:

   441

//          BACnet_encode_array(Analog_Output_Properties_List,

   442

//                              property_list_count(Analog_Output_Properties_List),

   443

//                              retfalse, encode_application_enumerated);

   444

//          break;

   445

        default:

   446

            rpdata->error_class = ERROR_CLASS_PROPERTY;

   447

            rpdata->error_code = ERROR_CODE_UNKNOWN_PROPERTY;

   448

            apdu_len = BACNET_STATUS_ERROR;

   449

            break;

   450

    }

   451

    /*  only array properties can have array options */

   452

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

   453

        (rpdata->object_property != PROP_EVENT_TIME_STAMPS) &&

   454

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

   455

        (rpdata->array_index != BACNET_ARRAY_ALL)) {

   456

        rpdata->error_class = ERROR_CLASS_PROPERTY;

   457

        rpdata->error_code = ERROR_CODE_PROPERTY_IS_NOT_AN_ARRAY;

   458

        apdu_len = BACNET_STATUS_ERROR;

   459

    }

   460

   461

    return apdu_len;

   462

}

   463

   464

   465

   466

   467

/* returns true if successful */

   468

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

   469

bool Analog_Output_Write_Property(

   470

    BACNET_WRITE_PROPERTY_DATA * wp_data)

   471

{

   472

    bool status = false;        /* return value */

   473

    unsigned int object_index = 0;

   474

    int len = 0;

   475

    BACNET_APPLICATION_DATA_VALUE value;

   476

    ANALOG_OUTPUT_DESCR *CurrentAO;

   477

   478

    /* decode the some of the request */

   479

    len =

   480

        bacapp_decode_application_data(wp_data->application_data,

   481

        wp_data->application_data_len, &value);

   482

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

   483

    if (len < 0) {

   484

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

   485

        wp_data->error_class = ERROR_CLASS_PROPERTY;

   486

        wp_data->error_code = ERROR_CODE_VALUE_OUT_OF_RANGE;

   487

        return false;

   488

    }

   489

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

   490

        (wp_data->object_property != PROP_EVENT_TIME_STAMPS) &&

   491

        (wp_data->array_index != BACNET_ARRAY_ALL)) {

   492

        /*  only array properties can have array options */

   493

        wp_data->error_class = ERROR_CLASS_PROPERTY;

   494

        wp_data->error_code = ERROR_CODE_PROPERTY_IS_NOT_AN_ARRAY;

   495

        return false;

   496

    }

   497

    object_index = Analog_Output_Instance_To_Index(wp_data->object_instance);

   498

    if (object_index < MAX_ANALOG_OUTPUTS)

   499

        CurrentAO = &AO_Descr[object_index];

   500

    else

   501

        return false;

   502

   503

    switch (wp_data->object_property) {

   504

        case PROP_PRESENT_VALUE:

   505

            if (value.tag == BACNET_APPLICATION_TAG_REAL) {

   506

                if (Analog_Output_Present_Value_Set(wp_data->object_instance,

   507

                        value.type.Real, wp_data->priority)) {

   508

                    status = true;

   509

                } else if (wp_data->priority == 6) {

   510

                    /* Command priority 6 is reserved for use by Minimum On/Off

   511

                       algorithm and may not be used for other purposes in any

   512

                       object. */

   513

                    wp_data->error_class = ERROR_CLASS_PROPERTY;

   514

                    wp_data->error_code = ERROR_CODE_WRITE_ACCESS_DENIED;

   515

                } else {

   516

                    wp_data->error_class = ERROR_CLASS_PROPERTY;

   517

                    wp_data->error_code = ERROR_CODE_VALUE_OUT_OF_RANGE;

   518

                }

   519

            } else {

   520

                status =

   521

                    WPValidateArgType(&value, BACNET_APPLICATION_TAG_NULL,

   522

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

   523

                if (status) {

   524

                    status =

   525

                        Analog_Output_Present_Value_Relinquish

   526

                        (wp_data->object_instance, wp_data->priority);

   527

                }

   528

                if (!status) {

   529

                    wp_data->error_class = ERROR_CLASS_PROPERTY;