Although this interface contains data elements DE1, DE2, DE3, DE4, and DE5, the component does not utilize all of the data elements. Open an AUTOSAR model that you want to configure as a queued sender or receiver component. This is where you list which SWC data elements (sender-receiver interface) or operations (client-server interface) that you intend to call from this runnable. AUTOSAR CANIF The CAN Interface module provides a unique interface to manage different CAN hardware device types like CAN controllers and CA. AUTOSAR Interface Sender-/Receiver- Interface Client-/Server- Interface . Atomic Sender/Receiver interface: An atomic sender-receiver interface can be used to group DID data elements into one record data element prototype. 0. For example, consider the following figure. Rte_Receive: Performs an “explicit” read on a sender-receiver communication data. We can use Sender receiver interface for data exchange, event and mode group exchange. An exception to this is e. I am thinking it might have to go the way of tagged values, but I am open to other suggestions if anyone knows of a more 1:1 mapping. To create an S-R interface and ports in Simulink: Open the AUTOSAR Dictionary and select S-R Interfaces. Maps a Simulink inport to an AUTOSAR receiver port. Try NOW!AUTOSAR Release Management Clarify load balancing option usage Contradicting requirements improved Redundant requirements removed 2018-03-29 1. Embedded Software Engineer. 52 of 101 Document ID 660: AUTOSAR_SOMEIPTransformer — AUTOSAR CONFIDENTIAL — Specification of. This example script shows: Creates and opens an AUTOSAR architecture model. The communication interface of an AUTOSAR software-component consists of well-defined ports. Three interfaces are defined in. An AUTOSAR sender-receiver interface with data elements. Sender-receiver communication is one-way - any reply sent by the receiver is sent as a separate sender-receiver communication. Software calibration access (SwCalibrationAccess) — Specifies calibration and measurement tool access to a data object. To create a Port interface, right click on "Software" and select Software --> Create Interface --> Create Port Interface --> Elements | Sender Receiver Interface. txt) or read online for free. Ports. Sender-Receiver는 데이터를 송신하고 수신하는 관점으로 센서 (Sensor)에서 사용되며, Client-Server는 기능을 요청하고. %PDF-1. Select an AUTOSAR sender-receiver port, and view and optionally reselect its associated S-R interface. Syntax: Std_ReturnType Rte_Receive_<p>_<o> (Rte_Instance <instance>,<data>) Where <p> is the port name and <o> the data element within the sender-receiver interface categorizing the port and <data> is the read data. Specify its name and the number of associated S-R data elements. The input ports are controlled by the environment, while the output ports are controlled by the component implementation. And there is one interrunnable. Choosing the appropriate communication interface, whether it is Client/Server or Sender/Receiver, is crucial for designing effective AUTOSAR-based systems. With the modified autosar_swc open, open the Type Editor. 5 KB) 002 RTE - Sender Receiver Interface. Create an S-R data communicate and its data elements. 4. Invalidation policies are used for flagging data when inconsistent the queued communication supports a means of storing and ordering received data to prevention. Used to define a Sender-Receiver-Interface, which is used for a Sender Receiver Port. Create AUTOSAR NV interfaces and ports, and map Simulink inports and outports to AUTOSAR NV ports. To add a sender-receiver port, click the Add. pdf [7] SoftwareComponentTemplate. 1. . A sender receiver. 模式转换接口(Mode Switch Interface). 5. The example replaces the sender interface Output_If in autosar_swc with a new interface named SenderInterface. In Simulink ®, for the Classic Platform, you can models AUTOSAR sender-receiver (S-R), client-server (C-S), mode-switch (M-S), nonvolatile (NV) evidence, parameter, real trigger communication. 30 Components, Ports and Interfaces A port can be PPort (provided interface) RPort (required interface) When a PPort provides an interface, the component to which the port belongs. AUTOSAR Trigger Interface Used to define a Trigger-Interface, which is used for a Trigger Port. The following code sets the IsService property for the Sender-Receiver Interface located at path Interface1 in the example model autosar_swc_expfcns to true. Here is an example of configuring client calls to NvM service interfaces in your AUTOSAR software component. AUTOSAR Client Server Port Used to define a Client-Server Port for a Component. See autosar standard 4. AUTOSAR message-based communication, including classic queued sender-receiver (S-R) or adaptive event-based messaging. The AUTOSAR software component has a Require and Provide port that references the same Sender-Receiver Interface, Interface1. Find wireless AV sender and receiver transmitters. . AUTOSAR仕様の一部となっている。. Modifies the associated interface for a port. Using a fully qualified path, add a sender-receiver interface to an interface package and set the IsService property to true. . Select the data inport that is mapped to the AUTOSAR receiver port for which you want to configure a DataReceiveErrorEvent. Client/Server Interface. 1 Input documents [1] AUTOSAR Specification for Runtime Environment AUTOSAR_SWS_RTE. srt (4. 不同类型的Port Interface. This element describes a sender/receiver interface that declares many data elements to be sent and received. Click Add. 2 DataMapping. Rename a sender-receiver port by editing its name text. SOME/IP. This interface is used where a more data-oriented informational exchange has to take place. 5. A Port Interface characterizes the information provided or required by a port of a Software Component. Approach #2: Use AUTOSAR Client/Server interface to define the reusable code a Server function. Sender/receiver interface—A sender distributes information to one or several receivers, or one receiver obtains information from several senders, as shown in Fig. RTE takes care to prevent any conflict if senders transmit at same time to one receiver or vice versa. TargetLink supports interrunnable communication, sender/receiver communication, and synchronous client/server communication, all of which are specified in the AUTOSAR standard. 6 %âãÏÓ 16937 0 obj >stream ƬŽm í¶ ÒN•ÜßœÔr¦9µl»øf ðÕ |n€7×s( ç%…· ZØc® 7^2ÇÅôçµq«ö²[0€Ñ j…ñ ¦lã°-¹yZÜÁæ$¯ºCD5 Ø ƒQóɉ ßdê]ùs ñY·¨8Jè Œ’ItøË žÙåR Ÿ^ð æ. By Simulink ®, for the Classic Platform, her can model AUTOSAR sender-receiver (S-R), client-server (C-S), mode-switch (M-S), nonvolatile (NV) data, criterion, and trigger communication. hModel = 'autosar_swc_expfcns' ; openExample (hModel); arProps = autosar. Basic Software configuration in Autosar Development. Ports ¶. Sender/receiver The sender expects no answer from the receiver and there will be. In the Inports tab, you can: Map a Simulink inport by selecting. In Simulink, you can: Create AUTOSAR S-R interfaces and ports by using the AUTOSAR. Loops through the ports and lists associated sender-receiver interfaces. 2 DataMapping. Others also viewed Dem module in the classic AUTOSAR. Select and expand the new NV interface. 002 RTE - Sender Receiver Interface. In this blog, I want cover some accessory to improve reliability the accuracy starting details reception when using sender/receiver ports. Sender Receiver port Interface: A sender-receiver (S/R) interface is a port-interface used for the case of sender-receiver communication. On the Modeling tab, click Model Data Editor and select the Inports/Outports tab. Our audio av receiver collection has wireless and bluetooth transmitters to suit your needs. . 7. So, the input value remains the same in a single execution of the runnable, no matter how many times it is used. Software Component (SW-C) - The SW-C wants to communicate, so, it uses the sender-receiver ports to output data into the RTE, which will take care of forwarding the data into the respective BSW module. Maps a Simulink inport to an AUTOSAR receiver port. AUTOSAR Client-Server Interface Select an AUTOSAR sender-receiver port, and view and optionally reselect its associated S-R interface. Autosar Architecture MP4 | Video: h264, 1280x720 | Audio: AAC, 44. Sender-Receiver Communication: The sender-receiver pattern gives solution to the asynchronous distribution of information, where a sender distributes information to one or several receivers. autosar. Maps a Simulink inport to an AUTOSAR receiver port. 🎥 Today Nabile Khoury from 🇫🇷 Paris/ France welcomes you to this video series on AUTOSAR tips a. Open a model for which an AUTOSAR sender-receiver interface is configured. Identify the inport that corresponds to the AUTOSAR receiver port for which IsUpdated service is required. Virtual Functional Bus AUTOSAR CP R21-11 7 of 107 Document ID 56: AUTOSAR_EXP_VFB 1. The AUTOSAR Interfaces are: Sender/Receiver interface: Defines a set of data elements that are sent from one component to one or more components. Illustrations 3: Multiple senders the one receiver with a queued interface. Runtime Environment (RTE) The RTE layer provides communication services to the application software for example AUTOSAR Software Components and/or AUTOSAR Sensor/Actuator components. Open a model for which an AUTOSAR sender-receiver interface is configured. The interface defines the boundary with the component environment in terms of input and output ports. Extended formulas expression for Units in Display names. Sender Receiver port Interface: A sender-receiver (S/R) interface is a port-interface used for the case of sender-receiver communication. Loops through the ports and lists associated sender-receiver interfaces. 2011年なので結構前ですね。. Components communicate events to. To create an. Sender-Receiver Interface. Select an AUTOSAR sender-receiver port, and view and optionally reselect its associated S-R interface. Sender/Receiver ports can be characterized with additional communication attributes like: For example, there are 2 types of ports used in Autosar SWCs: Sender/Receiver are interface ports that support n: 1 or 1: n communication. This article describes how to use this extension view. Figure: Sender Receiver Communication in AUTOSAR- VFB Level. 2. 4. To define an AUTOSAR interface, type a bus port with a bus object. This means that one sender may store data to the RTE for many receivers to read, or many senders may send data to the RTE for a single receiver to read. 0. These examples show how to use AUTOSAR property and map functions to configure AUTOSAR ports, interfaces, and related elements for S-R, C-S, and M-S communication. In like blog, IODIN will cover some tools to improvement reliability and correctness regarding data registration at using sender/receiver ports. //swc. It includes the methods provided by the SWC and the events that the SWC can respond to. autosar. There are three. . Configure AUTOSAR Sender-Receiver Interfaces. The port adapter allows to link the sub-elements of service interfaces of AUTOSAR Adaptive to interfaces of AUTOSAR Classic like sender receiver interfaces, client server interfaces, and trigger interfaces. Sender – Receiver and client-server communication in RTE AUTOSAR. In the Inports tab, you can: Map a Simulink inport by selecting. Select S-R Interfaces. A port prototype is a generic concept that in actual use results in e. Try loading different example models using the "Load Example" dropdown. The following figure is an example of how you model, in Simulink, an. AUTOSAR Classic offers two fondamental communication interfaces Sender/Receiver and Client/Server but when is better to utilize one or the other?Where <p> is the port name and <o> the VariableDataPrototype within the sender-receiver interface categorizing the port 36. Finds AUTOSAR sender or receiver ports. Therefore, the runnable functions as well as the RTE API calls use an additional function argument to manage the instance specific data. Model AUTOSAR Corporate. To map a Simulink outport to the AUTOSAR sender-receiver port you created, select the outport, set Port to the value PRPort, and set Element to the same data element selected in the previous step. 2. Software calibration access (SwCalibrationAccess) — Specifies calibration and measurement tool access to a data object. AUTOSARが、今年の版、R22-11公開しました。. If you need to create an event, click Add Event. 0 AUTOSAR Administration Improved support for on-board diagnostics Small layout adaptations made 2007-11-13 3. The mode receiver port uses a mode-switch (M-S) interface to connect and communicate with a mode manager, which provides notifications of mode changes. Having a standard connection between the components could cause a race condition. Identify the inport that corresponds to the AUTOSAR receiver port for which IsUpdated service is required. A sender-receiver interface pro-vides a message passing facility whereas a client-server interface provides function invocation. Paradigm AUTOSAR Communication. Check whether the configuration changes that you made appear in the generated code by. AUTOSAR Classical offers twin fondamental communication interfaces Sender/Receiver and Client/Server but when is better to use one or the other?The AUTOSAR software component has a Require and Provide port that references the same Sender-Receiver Interface, Interface1. Open a model for which an AUTOSAR sender-receiver interface is configured. The sender-receiver communication enables the exchange of data/ information where a sender distributes information to one or several receivers. The data-element is like a global variable which exchanges values. The AUTOSAR sender-receiver communication always exchanges data asynchronously and in a non-blocking manner. ---- Sender Receiver Interface. pdf), Text File (. In contrast to the event communication, for mode switch communication, the length is associated with the sender side, the mode manager,. The sender does not know the number of receivers and does not get any receipt. Chapter7describes how to define the external view of a software component. We can use Sender receiver interface for data exchange, event and mode group exchange. A sender-receiver (S/R) interface is a special kind of port-interface used for the case of sender-receiver communication. 3. For example:. 8. 3 스펙에 정의된 "Sender Receiver Interface"와 연관된 Event에 대한 Meta-Model입니다. The example replaces the sender interface Output_If in autosar_swc with a new interface named SenderInterface. the diagnostic communication (DoCAN) where the typical communication relationship is a peer -to-peer communication. 参数接口. The RunnableEntity a is mapped onto a periodic task, Task 1, and the RunnableEntity b is mapped onto a. In short for a Sender/Receiver interface, the data elements (VariableDataPrototype) of a SWCs SenderReceiver port are mapped to SystemSignals and SystemSignalGroups, when the communication between two SWCs are crossing the. AUTOSAR_TPS_SystemTemplate describes this in the chapter 5. AUTOSAR Classic offers two fondamental communication interfaces Sender/Receiver also Client/Server but when lives better to benefit one or one other?AUTOSAR CP R22-11 2018-10-31 4. Sender-Receiver Communication: The sender-receiver pattern gives solution to the asynchronous distribution of information, where a sender distributes information to one or several receivers. Hi, I have to read an AUTOSAR system description file (. What is the difference between a Client-Server and Sender-Receiver interface in Autosar? In a Client-Server interface, the client requests a service from the server and the server. Finds AUTOSAR sender or receiver ports. 3. mp4 (40. 0 AUTOSAR Release Management No content changes 2017-12-08 1. Create AUTOSAR NV interfaces and ports, and map Simulink inports and outports to AUTOSAR NV ports. 不同类型的Port Interface. Entry-point functions: Initialization entry. The Component type is set in a Tagged Value on the Component. Use the SwCalibrationAccess drop-down list to select the level of calibration and measurement tool access to allow for the data element. Implicit means there will not be any dedicated code that will run to transfer the data when the RTE function is called by the component,instead, there will be a fixed time slot where one or group of implicit ports will be written or read. 間違っていたら、いいね を押していただいて、コメント欄にご報告くださると幸いです. 1. Rename a sender-receiver port by editing its name text. 8. Block Out2 — Provide port, interface: sender-receiver of type real-T of 1 dimension. 0 AUTOSAR Release Management. //swc. To add a sender-receiver port, click the Add button and use the Add Ports dialog box. A Port Interface characterizes the information provided or required by a port of a Software Component. 0 AUTOSAR Release Management Editorial changes 2017-12-08 4. AUTOSAR Trigger Interface. Generate C code and ARXML files for AUTOSAR NV data interfaces and ports. The Inports tab of the Code Mappings editor maps each Simulink root. 1. h contains local define constants and local data required by the model and subsystems. Two the which I will expand on are invalidation policy and queued message. To model a mode user software component, use an AUTOSAR mode receiver port and a mode-switch event. To model a mode user software component, use an AUTOSAR mode receiver port and a mode-switch event. A high-level overview of the collaborative work between the Autosar Software and Basic Software layers can also be seen in Fig. For more information, see Concurrency Constraints for AUTOSAR Server Runnables. AUTOSAR software components provide well-defined connection points called. . Sender Receiver port Interface: A sender-receiver (S/R) interface is a port-interface used for the case of sender-receiver communication. 客户端-服务器接口(Client-Server Interface,C/S). This type of communication is used most frequently between application software components. The data element (VariableDataPrototype) contains the data being submitted and that invalidation policy manages data ausfallsicherheit (figure 1). Loops through the ports and lists associated sender-receiver interfaces. Rte_Send: It is similar to Rte_write, the difference is that this API is used to transmit data to a queue type data. hModel = 'autosar_swc_expfcns' ; openExample(hModel); arProps = autosar. importer class, I thought may be using XML reader would be the only solution. Sender-Receiver Interface A Sender-Receiver Interface consists of one or more data elements. An AUTOSAR interface is a generic interface provided by the runtime environment (RTE) to serve as a means of communication between software components. For example, consider the following figure. Accordingly, RTE offers a similar queueing mechanism as for the ’queued’ sender receiver AUTOSAR_SWS_RTE. AUTOSAR, standardized software architecture forward automotive ECUs, was developed for software reusability crosswise vehicles. The Inports tab of the Code Mappings editor maps each Simulink root inport to an AUTOSAR receiver port and an S-R interface data element. en. Sender-receiver communication can be “1:n” (single sender, multiple receivers) andAUTOSAR Sender Receiver Interface. Rte_Receive: Performs an “explicit” read on a sender-receiver communication data Syntax: Std_ReturnType Rte_Receive_<p>_<o>(Rte_Instance <instance>,<data>) Where <p> is the port name and <o> the data element within the sender-receiver interface categorizing the port and <data> is the read data Components communicate events to other. AUTOSAR Sender Receiver Interface. In Simulink ®, for the Classic Platform, you can modeling AUTOSAR sender-receiver (S-R), client-server (C-S), mode-switch (M-S), nonvolatile (NV) data, setup, and trigger communication. Port access is a list of intent. For example:. With AUTOSAR Talk. 2015-07-31 4. In Simulink ®, you can: Import AUTOSAR NV data interfaces and ports from ARXML files. So by default, it is set to TimingEvent. Identify the inport that corresponds to the AUTOSAR receiver port for which IsUpdated service is required. Add sender/receiver and/or client/server ports to your composition; Add SenderReceiverInterfaces and/or ClientServerInterfaces to the diagram; Add DataElementTypes (S/R interface) or OperationPrototypes (C/S interface) to your interface definitions; Add portType dependencies from your composition’s ports to the. With port-based NV data communication, you can. Use the AUTOSAR Dictionary and the Code. Having a standard connection between the components could cause a race condition. A. Data sent by an AUTOSAR sender software component is added to a queue provided by the AUTOSAR Runtime Environment (RTE). AUTOSAR interface. About AUTOSAR Communicating. Sender-Receiver interface: This interface defines an asynchronous information distribution and allows for a more data-oriented information exchange over the virtual function bus. The AUTOSAR COM module supports I-PDU callouts on sender and on receiver side. Module. In AUTOSAR, this is called the Port Interface. It contains a set of data elements that can be used to send and receive data. In the previous section, we discussed the required communication ports for event data exchange between a client and a server. AUTOSAR sender/receiver ports provide several configurations for improving veracity and accuracy. <SENDER-RECEIVER-INTERFACE>. Figure 16: AUTOSAR R4. You model AUTOSAR NV ports with Simulink inports and outports, in the same manner described in Sender-Receiver Interface. 33 841. ---- Sender Receiver Interface. Configure AUTOSAR Sender-Receiver Interface. . To add a sender-receiver port, click the Add button and use the Add Ports dialog box. You model AUTOSAR NV ports with Simulink inports and outports, in the same manner described in Sender-Receiver Interface. Use the SwCalibrationAccess drop-down list to select the level of calibration and measurement tool access to allow for the data element. Software address method (SwAddrMethod) — Specifies a method to access a data object (for example, a. 2. Connects architecture,. Select the Outports tab. Although a Require, Provide, or Provide-Require port can reference a Sender-Receiver Interface, the AUTOSAR software component does not necessarily access all of the data elements. 2 DataMapping. Select an AUTOSAR sender-receiver port, and view and optionally reselect its associated S-R interface. AUTOSAR provide and require ports that send and receive queued data. 존재하지 않는 이미지입니다. AUTOSAR sender/receiver ports provision more configurations to upgrade reliability and accuracy. Configure AUTOSAR Sender-Receiver Interface; Configure AUTOSAR Provide-Require Port; Configure AUTOSAR Receiver Port for IsUpdated Service; Configure AUTOSAR Sender-Receiver Data Annul; Configure AUTOSAR S-R Interface Port for End-To-End Protection; Configure AUTOSAR Add Port for DataReceiveErrorEvent; Configure. Used to define a Trigger-Interface, which is used for a Trigger Port. A port of a component that requires an AUTOSAR sender-receiver interface can read the data elements described in the interface and a port that provides the interface can write the data elements. txt:mode machine instance, assigns a constant length to the receive queue. To add a sender-receiver port, click the Add button and use the Add Ports dialog box. Open an AUTOSAR model that you want to configure as a queued sender or receiver component. These data elements are sent by the sender and requested by the receiver through application runnable. To add a sender-receiver port, click the Add button and use the Add Ports dialog box. AUTOSAR Conventional offers two fondamental telecommunications interfaces Sender/Receiver press Client/Server but when a better to use one or the other?Sender Receiver in AUTOSAR is used to exchange (Read or Write) Data SENDER RECEIVER INTERFACE from one software component to another software component /Service CLIENT SERVER INTERFACE component(BSW). AUTOSAR covers different automotive application domains, but not necessarily all of them. Rte_Receive: Performs an “explicit” read on a sender-receiver communication data Syntax: Std_ReturnType Rte_Receive_<p>_<o>(Rte_Instance <instance>,<data>) Where <p> is the port name and <o> the data element within the sender-receiver interface categorizing the port and <data> is the read data. 3. a Client/Server or Sender/Receiver Port. AUTOSAR supports different flavors of sender-receiver port communication (explicit/implicit com-munication, queued or un-queued communication, sending/receiving of data or events). Select S-R Interfaces. Rename a sender-receiver port by editing its name text. In Autosar Application Can we have both kind of Interfaces Like Sender/receiver Interfaces and Client/Server Interfaces? Or is there only S/R interface between 2 Application components at application level in autosar architecture? Port access is a list of intent. AUTOSAR AP R19-11 Document Title Methodology for Adaptive Platform. additional sender/receiver (S/R) ports. With port-based NV data. The Autosar Interface Lektor simplifies the task of works with. 45 Figure 17: Data element Speed for the sender-receiver interface SRInterface. 1. The AUTOSAR software component has a Require and Provide port that references the same Sender-Receiver Interface, Interface1. We will configure the Sender Receiver interface so that it contains 3 Data Elements. Sender/receiver interface have two attributes: a data element and an invalidation policy. g. , sender/receiver) of the component instances have to access instance specific data. Configure and Map Sender-Receiver Ports. The sender/receiver interfaces may have a 1:1 rela-tion (e. Select S-R Interfaces. While the actual. Extended formulas expression for Units in Display names. ) now possible even if mode limitation is active Channel state machine. 3. Sender Receiver Interface in AUTOSAR Abhishek Kumar 1y Learned DCM in Classic AUTOSAR Mikio H. Select and expand the new NV interface. Modifies the associated interface for a port. Rename a sender-receiver port by editing its name text. In AUTOSAR queued sender-receiver (S-R) communication, AUTOSAR software components read and write data to other components or services. Sender Receiver Interface:. 3. The steps to configure an event depend on the type of event. Although a Require, Provide, or Provide-Require port can reference a Sender-Receiver Interface, the AUTOSAR software component does not necessarily access all of the data elements. Each interface type has distinct characteristics and attributes that make them. data elements of an AUTOSAR interface. In general, there are two types of ports: Require Port (R-Port) AUTOSAR_TPS_SystemTemplate describes this in the chapter 5. in Motor Vehicles p y g protective functions Some systems will continue to use their own OS but these must have an interface to Autosar that. 3. 3. Abdelrahman bakr. The term Port Interface refers to the highest level of description of information transferred between components in an AUTOSAR system. To create an S-R data interface and a queued sender or receiver port: Open the AUTOSAR Dictionary. Who this course is for: Embedded software Engineers; Software Engineering students; Show more Show less. 903. Used to define a Sender-Receiver-Interface, which is used for a Sender Receiver Port. New symbols can and should be used to quickly communicate this to those who read the diagrams. AUTOSAR Interface는 AUTOSAR가 정의한 인터페이스를 의미한다. Display format (DisplayFormat) — Specifies calibration and measurement display format for a data object. Rename a sender-receiver port by editing its name text. AUTOSAR Application Software Components - Description levelsFinds AUTOSAR sender or receiver ports. Symbolic nameWhich attributes are available in AUTOSAR to configure a Client/Server Communication? 🎥 Today Nabile Khoury from Paris/ France welcomes you to this video se. Although this interface contains data elements DE1, DE2, DE3, DE4, and DE5, the component does not utilize all of the data elements. 3. They are scheduled by. Create a second inport, set its data type to boolean, and connect it to the same block. The mode receiver port uses a mode-switch (M-S) interface to connect and communicate with a mode manager, which provides notifications of mode changes. RPort: invoke the. You model AUTOSAR NV ports with Simulink inports and outports, in the same manner described in Sender-Receiver Interface. Used to define a Sender-Receiver-Interface, which is used for a Sender Receiver Port. Used to define a Sender-Receiver-Interface, which is used for a Sender Receiver Port.