AllJoyn/Samples/BACnetAdapter/bacnet-stack-0.8.2/demo/object/ao.c
int Analog_Output_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;
    float real_value = (float) 1.414;
    unsigned object_index = 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_ANALOG_OUTPUT,
                rpdata->object_instance);
            break;
        case PROP_OBJECT_NAME:
        case PROP_DESCRIPTION:
            Analog_Output_Object_Name(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_OUTPUT);
            break;
        case PROP_PRESENT_VALUE:
            real_value = Analog_Output_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);
            state = Analog_Output_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 = Analog_Output_Out_Of_Service(rpdata->object_instance);
            apdu_len = encode_application_boolean(&apdu[0], state);
            break;
        case PROP_UNITS:
            apdu_len = encode_application_enumerated(&apdu[0], UNITS_PERCENT);
            break;
        case PROP_PRIORITY_ARRAY:
            /* Array element zero is the number of elements in the array */
            if (rpdata->array_index == 0)
                apdu_len =
                    encode_application_unsigned(&apdu[0], BACNET_MAX_PRIORITY);
            /* if no index was specified, then try to encode the entire list */
            /* into one packet. */
            else if (rpdata->array_index == BACNET_ARRAY_ALL) {
                object_index =
                    Analog_Output_Instance_To_Index(rpdata->object_instance);
                for (i = 0; i < BACNET_MAX_PRIORITY; i++) {
                    /* FIXME: check if we have room before adding it to APDU */
                    if (Analog_Output_Level[object_index][i] == AO_LEVEL_NULL)
                        len = encode_application_null(&apdu[apdu_len]);
                    else {
                        real_value = Analog_Output_Level[object_index][i];
                        len =
                            encode_application_real(&apdu[apdu_len],
                            real_value);
                    }
                    /* 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 {
                object_index =
                    Analog_Output_Instance_To_Index(rpdata->object_instance);
                if (rpdata->array_index <= BACNET_MAX_PRIORITY) {
                    if (Analog_Output_Level[object_index][rpdata->array_index -
                            1] == AO_LEVEL_NULL)
                        apdu_len = encode_application_null(&apdu[0]);
                    else {
                        real_value = Analog_Output_Level[object_index]
                            [rpdata->array_index - 1];
                        apdu_len =
                            encode_application_real(&apdu[0], real_value);
                    }
                } else {
                    rpdata->error_class = ERROR_CLASS_PROPERTY;
                    rpdata->error_code = ERROR_CODE_INVALID_ARRAY_INDEX;
                    apdu_len = BACNET_STATUS_ERROR;
                }
            }
            break;
        case PROP_RELINQUISH_DEFAULT:
            real_value = AO_RELINQUISH_DEFAULT;
            apdu_len = encode_application_real(&apdu[0], real_value);
            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_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 Analog_Output_Read_Property(
    BACNET_READ_PROPERTY_DATA * rpdata)
{
    int len = 0;
    int apdu_len = 0;   
    BACNET_BIT_STRING bit_string;
    BACNET_CHARACTER_STRING char_string;
    float real_value = (float) 1.414;
    unsigned object_index = 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_ANALOG_OUTPUT,
                rpdata->object_instance);
            break;
        case PROP_OBJECT_NAME:
        case PROP_DESCRIPTION:
            Analog_Output_Object_Name(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_OUTPUT);
            break;
        case PROP_PRESENT_VALUE:
            real_value = Analog_Output_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);
            state = Analog_Output_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 = Analog_Output_Out_Of_Service(rpdata->object_instance);
            apdu_len = encode_application_boolean(&apdu[0], state);
            break;
        case PROP_UNITS:
            apdu_len = encode_application_enumerated(&apdu[0], UNITS_PERCENT);
            break;
        case PROP_PRIORITY_ARRAY:
            if (rpdata->array_index == 0)
                apdu_len =
                    encode_application_unsigned(&apdu[0], BACNET_MAX_PRIORITY);
            else if (rpdata->array_index == BACNET_ARRAY_ALL) {
                object_index =
                    Analog_Output_Instance_To_Index(rpdata->object_instance);
                for (i = 0; i < BACNET_MAX_PRIORITY; i++) {
                    if (Analog_Output_Level[object_index][i] == AO_LEVEL_NULL)
                        len = encode_application_null(&apdu[apdu_len]);
                    else {
                        real_value = Analog_Output_Level[object_index][i];
                        len =
                            encode_application_real(&apdu[apdu_len],
                            real_value);
                    }
                    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 {
                object_index =
                    Analog_Output_Instance_To_Index(rpdata->object_instance);
                if (rpdata->array_index <= BACNET_MAX_PRIORITY) {
                    if (Analog_Output_Level[object_index][rpdata->array_index -
                            1] == AO_LEVEL_NULL)
                        apdu_len = encode_application_null(&apdu[0]);
                    else {
                        real_value = Analog_Output_Level[object_index]
                            [rpdata->array_index - 1];
                        apdu_len =
                            encode_application_real(&apdu[0], real_value);
                    }
                } else {
                    rpdata->error_class = ERROR_CLASS_PROPERTY;
                    rpdata->error_code = ERROR_CODE_INVALID_ARRAY_INDEX;
                    apdu_len = BACNET_STATUS_ERROR;
                }
            }
            break;
        case PROP_RELINQUISH_DEFAULT:
            real_value = AO_RELINQUISH_DEFAULT;
            apdu_len = encode_application_real(&apdu[0], real_value);
            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_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 Analog_Output_Read_Property ( BACNET_READ_PROPERTY_DATA * rpdata ) { int len = 0 ; int apdu_len = 0 ; BACNET_BIT_STRING bit_string ; BACNET_CHARACTER_STRING char_string ; float real_value = ( float ) 1.414 ; unsigned object_index = 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_ANALOG_OUTPUT , rpdata -> object_instance ) ; break ; case PROP_OBJECT_NAME : case PROP_DESCRIPTION : Analog_Output_Object_Name ( 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_OUTPUT ) ; break ; case PROP_PRESENT_VALUE : real_value = Analog_Output_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 ) ; state = Analog_Output_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 = Analog_Output_Out_Of_Service ( rpdata -> object_instance ) ; apdu_len = encode_application_boolean ( & apdu [ 0 ] , state ) ; break ; case PROP_UNITS : apdu_len = encode_application_enumerated ( & apdu [ 0 ] , UNITS_PERCENT ) ; break ; case PROP_PRIORITY_ARRAY : if ( rpdata -> array_index == 0 ) apdu_len = encode_application_unsigned ( & apdu [ 0 ] , BACNET_MAX_PRIORITY ) ; else if ( rpdata -> array_index == BACNET_ARRAY_ALL ) { object_index = Analog_Output_Instance_To_Index ( rpdata -> object_instance ) ; for ( i = 0 ; i < BACNET_MAX_PRIORITY ; i ++ ) { if ( Analog_Output_Level [ object_index ] [ i ] == AO_LEVEL_NULL ) len = encode_application_null ( & apdu [ apdu_len ] ) ; else { real_value = Analog_Output_Level [ object_index ] [ i ] ; len = encode_application_real ( & apdu [ apdu_len ] , real_value ) ; } 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 { object_index = Analog_Output_Instance_To_Index ( rpdata -> object_instance ) ; if ( rpdata -> array_index <= BACNET_MAX_PRIORITY ) { if ( Analog_Output_Level [ object_index ] [ rpdata -> array_index - 1 ] == AO_LEVEL_NULL ) apdu_len = encode_application_null ( & apdu [ 0 ] ) ; else { real_value = Analog_Output_Level [ object_index ] [ rpdata -> array_index - 1 ] ; apdu_len = encode_application_real ( & apdu [ 0 ] , real_value ) ; } } else { rpdata -> error_class = ERROR_CLASS_PROPERTY ; rpdata -> error_code = ERROR_CODE_INVALID_ARRAY_INDEX ; apdu_len = BACNET_STATUS_ERROR ; } } break ; case PROP_RELINQUISH_DEFAULT : real_value = AO_RELINQUISH_DEFAULT ; apdu_len = encode_application_real ( & apdu [ 0 ] , real_value ) ; 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_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 */ /* 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: check if we have room before adding it to APDU */ /* add it if we have room */ /*  only array properties can have array options */