AllJoyn/Samples/BACnetAdapter/bacnet-stack-0.8.2/demo/object/msv.c
int Multistate_Value_Read_Property(
    BACNET_READ_PROPERTY_DATA * rpdata)
{
    int len = 0;
    int apdu_len = 0;   /* return value */
    BACNET_BIT_STRING bit_string;
    BACNET_CHARACTER_STRING char_string;
    uint32_t present_value = 0;
    unsigned i = 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;
    switch (rpdata->object_property) {
        case PROP_OBJECT_IDENTIFIER:
            apdu_len =
                encode_application_object_id(&apdu[0],
                OBJECT_MULTI_STATE_VALUE, rpdata->object_instance);
            break;
            /* note: Name and Description don't have to be the same.
               You could make Description writable and different */
        case PROP_OBJECT_NAME:
            Multistate_Value_Object_Name(rpdata->object_instance,
                &char_string);
            apdu_len =
                encode_application_character_string(&apdu[0], &char_string);
            break;
        case PROP_DESCRIPTION:
            characterstring_init_ansi(&char_string,
                Multistate_Value_Description(rpdata->object_instance));
            apdu_len =
                encode_application_character_string(&apdu[0], &char_string);
            break;
        case PROP_OBJECT_TYPE:
            apdu_len =
                encode_application_enumerated(&apdu[0],
                OBJECT_MULTI_STATE_VALUE);
            break;
        case PROP_PRESENT_VALUE:
            present_value =
                Multistate_Value_Present_Value(rpdata->object_instance);
            apdu_len = encode_application_unsigned(&apdu[0], present_value);
            break;
        case PROP_STATUS_FLAGS:
            /* note: see the details in the standard on how to use these */
            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);
            state = Multistate_Value_Out_Of_Service(rpdata->object_instance);
            bitstring_set_bit(&bit_string, STATUS_FLAG_OUT_OF_SERVICE, state);
            apdu_len = encode_application_bitstring(&apdu[0], &bit_string);
            break;
        case PROP_EVENT_STATE:
            /* note: see the details in the standard on how to use this */
            apdu_len =
                encode_application_enumerated(&apdu[0], EVENT_STATE_NORMAL);
            break;
        case PROP_OUT_OF_SERVICE:
            state = Multistate_Value_Out_Of_Service(rpdata->object_instance);
            apdu_len = encode_application_boolean(&apdu[0], state);
            break;
        case PROP_NUMBER_OF_STATES:
            apdu_len =
                encode_application_unsigned(&apdu[apdu_len],
                MULTISTATE_NUMBER_OF_STATES);
            break;
        case PROP_STATE_TEXT:
            if (rpdata->array_index == 0) {
                /* Array element zero is the number of elements in the array */
                apdu_len =
                    encode_application_unsigned(&apdu[0],
                    MULTISTATE_NUMBER_OF_STATES);
            } else if (rpdata->array_index == BACNET_ARRAY_ALL) {
                /* if no index was specified, then try to encode the entire list */
                /* into one packet. */
                for (i = 1; i <= MULTISTATE_NUMBER_OF_STATES; i++) {
                    characterstring_init_ansi(&char_string,
                        Multistate_Value_State_Text(rpdata->object_instance,
                            i));
                    /* FIXME: this might go beyond MAX_APDU length! */
                    len =
                        encode_application_character_string(&apdu[apdu_len],
                        &char_string);
                    /* add it if we have room */
                    if ((apdu_len + len) < MAX_APDU) {
                        apdu_len += len;
                    } else {
                        rpdata->error_class = ERROR_CLASS_SERVICES;
                        rpdata->error_code = ERROR_CODE_NO_SPACE_FOR_OBJECT;
                        apdu_len = BACNET_STATUS_ERROR;
                        break;
                    }
                }
            } else {
                if (rpdata->array_index <= MULTISTATE_NUMBER_OF_STATES) {
                    characterstring_init_ansi(&char_string,
                        Multistate_Value_State_Text(rpdata->object_instance,
                            rpdata->array_index));
                    apdu_len =
                        encode_application_character_string(&apdu[0],
                        &char_string);
                } else {
                    rpdata->error_class = ERROR_CLASS_PROPERTY;
                    rpdata->error_code = ERROR_CODE_INVALID_ARRAY_INDEX;
                    apdu_len = BACNET_STATUS_ERROR;
                }
            }
            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_STATE_TEXT) &&
        (rpdata->object_property != PROP_PRIORITY_ARRAY) &&
        (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;
}
/* return apdu len, or BACNET_STATUS_ERROR on error */
return apdu len, or BACNET_STATUS_ERROR on error
return apdu len or BACNET_STATUS_ERROR on error
int Multistate_Value_Read_Property(
    BACNET_READ_PROPERTY_DATA * rpdata)
{
    int len = 0;
    int apdu_len = 0;   
    BACNET_BIT_STRING bit_string;
    BACNET_CHARACTER_STRING char_string;
    uint32_t present_value = 0;
    unsigned i = 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;
    switch (rpdata->object_property) {
        case PROP_OBJECT_IDENTIFIER:
            apdu_len =
                encode_application_object_id(&apdu[0],
                OBJECT_MULTI_STATE_VALUE, rpdata->object_instance);
            break;
        case PROP_OBJECT_NAME:
            Multistate_Value_Object_Name(rpdata->object_instance,
                &char_string);
            apdu_len =
                encode_application_character_string(&apdu[0], &char_string);
            break;
        case PROP_DESCRIPTION:
            characterstring_init_ansi(&char_string,
                Multistate_Value_Description(rpdata->object_instance));
            apdu_len =
                encode_application_character_string(&apdu[0], &char_string);
            break;
        case PROP_OBJECT_TYPE:
            apdu_len =
                encode_application_enumerated(&apdu[0],
                OBJECT_MULTI_STATE_VALUE);
            break;
        case PROP_PRESENT_VALUE:
            present_value =
                Multistate_Value_Present_Value(rpdata->object_instance);
            apdu_len = encode_application_unsigned(&apdu[0], present_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);
            state = Multistate_Value_Out_Of_Service(rpdata->object_instance);
            bitstring_set_bit(&bit_string, STATUS_FLAG_OUT_OF_SERVICE, state);
            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 = Multistate_Value_Out_Of_Service(rpdata->object_instance);
            apdu_len = encode_application_boolean(&apdu[0], state);
            break;
        case PROP_NUMBER_OF_STATES:
            apdu_len =
                encode_application_unsigned(&apdu[apdu_len],
                MULTISTATE_NUMBER_OF_STATES);
            break;
        case PROP_STATE_TEXT:
            if (rpdata->array_index == 0) {
                apdu_len =
                    encode_application_unsigned(&apdu[0],
                    MULTISTATE_NUMBER_OF_STATES);
            } else if (rpdata->array_index == BACNET_ARRAY_ALL) {
                for (i = 1; i <= MULTISTATE_NUMBER_OF_STATES; i++) {
                    characterstring_init_ansi(&char_string,
                        Multistate_Value_State_Text(rpdata->object_instance,
                            i));
                    len =
                        encode_application_character_string(&apdu[apdu_len],
                        &char_string);
                    if ((apdu_len + len) < MAX_APDU) {
                        apdu_len += len;
                    } else {
                        rpdata->error_class = ERROR_CLASS_SERVICES;
                        rpdata->error_code = ERROR_CODE_NO_SPACE_FOR_OBJECT;
                        apdu_len = BACNET_STATUS_ERROR;
                        break;
                    }
                }
            } else {
                if (rpdata->array_index <= MULTISTATE_NUMBER_OF_STATES) {
                    characterstring_init_ansi(&char_string,
                        Multistate_Value_State_Text(rpdata->object_instance,
                            rpdata->array_index));
                    apdu_len =
                        encode_application_character_string(&apdu[0],
                        &char_string);
                } else {
                    rpdata->error_class = ERROR_CLASS_PROPERTY;
                    rpdata->error_code = ERROR_CODE_INVALID_ARRAY_INDEX;
                    apdu_len = BACNET_STATUS_ERROR;
                }
            }
            break;
        default:
            rpdata->error_class = ERROR_CLASS_PROPERTY;
            rpdata->error_code = ERROR_CODE_UNKNOWN_PROPERTY;
            apdu_len = BACNET_STATUS_ERROR;
            break;
    }
    if ((apdu_len >= 0) && (rpdata->object_property != PROP_STATE_TEXT) &&
        (rpdata->object_property != PROP_PRIORITY_ARRAY) &&
        (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;
}
int Multistate_Value_Read_Property ( BACNET_READ_PROPERTY_DATA * rpdata ) { int len = 0 ; int apdu_len = 0 ; BACNET_BIT_STRING bit_string ; BACNET_CHARACTER_STRING char_string ; uint32_t present_value = 0 ; unsigned i = 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 ; switch ( rpdata -> object_property ) { case PROP_OBJECT_IDENTIFIER : apdu_len = encode_application_object_id ( & apdu [ 0 ] , OBJECT_MULTI_STATE_VALUE , rpdata -> object_instance ) ; break ; case PROP_OBJECT_NAME : Multistate_Value_Object_Name ( rpdata -> object_instance , & char_string ) ; apdu_len = encode_application_character_string ( & apdu [ 0 ] , & char_string ) ; break ; case PROP_DESCRIPTION : characterstring_init_ansi ( & char_string , Multistate_Value_Description ( rpdata -> object_instance ) ) ; apdu_len = encode_application_character_string ( & apdu [ 0 ] , & char_string ) ; break ; case PROP_OBJECT_TYPE : apdu_len = encode_application_enumerated ( & apdu [ 0 ] , OBJECT_MULTI_STATE_VALUE ) ; break ; case PROP_PRESENT_VALUE : present_value = Multistate_Value_Present_Value ( rpdata -> object_instance ) ; apdu_len = encode_application_unsigned ( & apdu [ 0 ] , present_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 ) ; state = Multistate_Value_Out_Of_Service ( rpdata -> object_instance ) ; bitstring_set_bit ( & bit_string , STATUS_FLAG_OUT_OF_SERVICE , state ) ; 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 = Multistate_Value_Out_Of_Service ( rpdata -> object_instance ) ; apdu_len = encode_application_boolean ( & apdu [ 0 ] , state ) ; break ; case PROP_NUMBER_OF_STATES : apdu_len = encode_application_unsigned ( & apdu [ apdu_len ] , MULTISTATE_NUMBER_OF_STATES ) ; break ; case PROP_STATE_TEXT : if ( rpdata -> array_index == 0 ) { apdu_len = encode_application_unsigned ( & apdu [ 0 ] , MULTISTATE_NUMBER_OF_STATES ) ; } else if ( rpdata -> array_index == BACNET_ARRAY_ALL ) { for ( i = 1 ; i <= MULTISTATE_NUMBER_OF_STATES ; i ++ ) { characterstring_init_ansi ( & char_string , Multistate_Value_State_Text ( rpdata -> object_instance , i ) ) ; len = encode_application_character_string ( & apdu [ apdu_len ] , & char_string ) ; if ( ( apdu_len + len ) < MAX_APDU ) { apdu_len += len ; } else { rpdata -> error_class = ERROR_CLASS_SERVICES ; rpdata -> error_code = ERROR_CODE_NO_SPACE_FOR_OBJECT ; apdu_len = BACNET_STATUS_ERROR ; break ; } } } else { if ( rpdata -> array_index <= MULTISTATE_NUMBER_OF_STATES ) { characterstring_init_ansi ( & char_string , Multistate_Value_State_Text ( rpdata -> object_instance , rpdata -> array_index ) ) ; apdu_len = encode_application_character_string ( & apdu [ 0 ] , & char_string ) ; } else { rpdata -> error_class = ERROR_CLASS_PROPERTY ; rpdata -> error_code = ERROR_CODE_INVALID_ARRAY_INDEX ; apdu_len = BACNET_STATUS_ERROR ; } } break ; default : rpdata -> error_class = ERROR_CLASS_PROPERTY ; rpdata -> error_code = ERROR_CODE_UNKNOWN_PROPERTY ; apdu_len = BACNET_STATUS_ERROR ; break ; } if ( ( apdu_len >= 0 ) && ( rpdata -> object_property != PROP_STATE_TEXT ) && ( rpdata -> object_property != PROP_PRIORITY_ARRAY ) && ( 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 ; }
return apdu len, or BACNET_STATUS_ERROR on error
return apdu len or BACNET_STATUS_ERROR on error
/* return value */ /* note: Name and Description don't have to be the same.
               You could make Description writable and different */ /* note: see the details in the standard on how to use these */ /* note: see the details in the standard on how to use this */ /* Array element zero is the number of elements in the array */ /* if no index was specified, then try to encode the entire list */ /* into one packet. */ /* FIXME: this might go beyond MAX_APDU length! */ /* add it if we have room */ /*  only array properties can have array options */