The QKnxDeviceManagementFrame::PropertyReadBuilder class provides the means to create valid device management property read service frames. 更多...
| QKnxDeviceManagementFrame | createConfirmation (const QKnxByteArray & data , const QKnxDeviceManagementFrame & request = {}) const |
| QKnxDeviceManagementFrame | createNegativeConfirmation (QKnxNetIpCemiServer::Error error , const QKnxDeviceManagementFrame & request = {}) const |
| QKnxDeviceManagementFrame | createRequest () const |
| PropertyReadBuilder & | setNumberOfElements (quint8 noe ) |
| PropertyReadBuilder & | setObjectInstance (quint8 实例 ) |
| PropertyReadBuilder & | setObjectType (QKnxInterfaceObjectType type ) |
| PropertyReadBuilder & | setProperty (QKnxInterfaceObjectProperty pid ) |
| PropertyReadBuilder & | setStartIndex (quint16 startIndex ) |
The property read service is used by a common external message interface (cEMI) client to send a property read request frame,
M_PropRead.req
. It must be followed by a property read confirmation frame,
M_PropRead.con
, sent by a cEMI server. The confirmation indicates whether the request was successful.
另请参阅 QKnxDeviceManagementFrame::MessageCode , QKnxDeviceManagementFrame ，和 Qt KNX Device Management Classes .
Creates a and returns a device management property read confirmation frame with the data field set to data .
The available default argument request can be used to fill some of the returned frame fields instead of using the setter functions provided.
The common way to create such a request is:
void MyCemiServer::slotFrameReceived(const QKnxDeviceManagementFrame &request) { // do some work auto data = ... auto confirmation = QKnxDeviceManagementFrame::propertyReadBuilder() .createConfirmation(data, request); deviceManagement.sendFrame(confirmation); }
注意： The returned frame may be invalid depending on the values used during setup.
另请参阅 QKnxDeviceManagementFrame and QKnxDeviceManagementFrame::isValid ().
Creates and returns a negative device management property read confirmation frame.
The available default argument request can be used to fill some of the returned frame fields instead of using the setter functions provided.
The number of elements of a negative response is set to zero and the start index needs to be set to the value received with the request.
The error field of a negative response contains information about the error as a QKnx::NetIp::CemiServer::Error 值。
The common way to create such a confirmation is:
void MyCemiServer::slotFrameReceived(const QKnxDeviceManagementFrame &request) { // do some work bool nonExistingProperty = ... if (nonExistingProperty) { auto confirmation = QKnxDeviceManagementFrame::propertyReadBuilder() .createNegativeConfirmation(QKnxNetIpCemiServer::Error::NonExistingProperty, request); deviceManagement.sendFrame(confirmation); } }
注意： The returned frame may be invalid depending on the values used during setup.
另请参阅 QKnxDeviceManagementFrame and QKnxDeviceManagementFrame::isValid ().
Creates a and returns a device management property read request frame.
The common way to create such a request is:
auto request = QKnxDeviceManagementFrame::propertyReadBuilder() .setObjectType(...) .setObjectInstance(...) .setProperty(...) .setNumberOfElements(...) .setStartIndex(...) .createRequest() deviceManagement.sendFrame(request);
注意： The returned frame may be invalid depending on the values used during setup.
另请参阅 QKnxDeviceManagementFrame and QKnxDeviceManagementFrame::isValid ().
Sets the number of elements of this builder to noe and returns a reference to the builder.
Sets the object instance of this builder to 实例 and returns a reference to the builder.
Sets the interface object type of this builder to type and returns a reference to the builder.
Sets the interface object property of this builder to pid and returns a reference to the builder.
Sets the start index of this builder to startIndex and returns a reference to the builder.
