CANoe DENoe - KEMT FEI TUKE

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1.3.12 Simulation of Distributed Systems in CANoe CANoe provides environment variables to model the functional bus behavior of network nodes. These environment variables are described by events and states of the system environment (external pressure, temperature, switch positions, etc.). You can observe and intentionally change these states - i.e. the values of the environment variables - on user-definable control panels. To work with environment variables in CAPL you use the event procedure type on envVar (React to change in environment variable). The CAPL functions getValue() and putValue() are used to read and write environment variables. These language tools and symbolic access to the various variables defined in the database make it possible to create simple prototypical network node models. The following task consists of creating a complete CANoe configuration with two network node models and associated periphery, i.e. control panels. This should only involve implementation of distributed functions: After the user activates a switch, the first node informs the second node of this action. The second node then activates an indicator lamp in its periphery. evSwitch evLight I/O Interface Application Bus Interface effect Msg1.bsSwitch I/O Interface Application Bus Interface This simplest functionality was purposely selected to direct the user's attention to the creation of models and not to their functionality. More complex distributed systems can build upon the same conceptual pattern in CANoe without any difficulty. A model for distributed systems can be created efficiently in CANoe in three steps: : 1. Create the database with messages, signals and environment variables 2. Create the network node periphery, i.e. the control panels 3. Create the network node models in CAPL To prepare for the task you might, for example, create a new empty configuration by pressing the button on the toolbar. 1.3.12.1 Creating the Database The first step involves creating a database which describes the following two significant aspects of the system: © Vector Informatik GmbH CANoe/DENoe Manual Version 4.1.1 27
28 • The exchange of information between the two network nodes via the communication medium, i.e. the CAN bus; and • The I/O interface to the periphery, i.e. the "wiring" between each node and its input and output units. The database message and signal objects are available for describing the exchange of information over the CAN bus. The simple functionality of the example can be handled by a 1-bit signal which describes the state of the switch at the first node. This signal is packed in a CAN message and is only transmitted if the switch state changes (spontaneous transmission). Therefore, you create a new database with the CANdb++ Editor, and in the database you create a message, e.g. with the name Msg1 and identifier 100, which is to be transmitted by the first node. Create the signal bsSwitch to describe the switch position and link it to the message Msg1. In this case a signal length of one bit is sufficient, since only two states need to be transmitted, On (1) and Off (0): The database provides you with environment variables for describing the I/O interface between the nodes and their peripheries. Each peripheral element (Switch, indicator lamp, slider, etc.) is "wired" to an environment variable, i.e. it is connected to the CAPL program for the network node. In this example there are exactly two peripheral elements: A switch at the first node and an indicator lamp at the second node. Therefore, two environment variables must be created in the database, e.g. evLight and evSwitch: Figure 29: Environment variables in the database Save the database, e.g. under the name TOUR.DBC, and associate it with your empty configuration. In the System View window of the Simulation setup you can add the database. If you go in the tree view of the current configuration to Databases with the mouse pointer and click on the right mouse button, you can run the command Add… from the context menu. 1.3.12.2 Creating Panels A separate application, the Panel Editor, is provided in CANoe for creating the node's periphery. Please refer to chapter 5 for a detailed introduction to this editor. © Vector Informatik GmbH CANoe/DENoe Manual Version 4.1.1
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Command from driver not supported (
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supplied with the card. Operation o
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The CAN controllers are provided wi
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Figure 49: Acceptance Filtering wit
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3 Windows You can modify the arrang
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3.1.2 Layout of the Simulation Setu
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You configure the measurement setup
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time stamp 2.7000 sec CANoe transm
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Figure 55: Simulation Dialog Note:
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WU = Wake up or TE = Transceiver er
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fixed position, cyclic update outpu
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3.3.3 Trace Window Options from the
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3.4.1 Selecting Signals 101 In the
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103 For all signals you have entere
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105 Note: It is always the case tha
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107 10x , n = [1 to 9], x = whole n
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109 To optimize the Graphics window
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The popup menu command Copy content
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Display type: Decimal The raw data
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ing. However, to obtain reasonable
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Figure 67: Statistical evaluation o
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Figure 69: Bus Statistics Window 11
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If you have not entered any comment
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Figure 71: Generator block Configur
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Figure 72: Signal Response Generato
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For examples of interactive generat
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quest of the same message must foll
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4.3 Replay Block 131 The replay blo
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4.5 Filter block 133 The volume of
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The filter configuration is lost wh
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Note: When a CAPL node is removed f
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139 The left side of the dialog is
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Figure 79: The Panel Editor 141 All
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143 Note: It is now possible to aut
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5.3.2 Configuration of the Elements
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147 Only elements completely enclos
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With View you can choose among thre
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Figure 83: Configuration Dialog for
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5.9 Panel Control 153 For complex C
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155 Therefore, you can utilize a CA
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Bus event: Keyboard event: Time eve
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6.2.1 Opening Browser 159 Browser i
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161 If you are using more than one
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Bus Bus bus name Database Database
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8.4 LIN Specifications CANoe.LIN su
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9 Option .MOST In this chapter you
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9.5 Original timestamp 169 This is
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• Make sure, the DTD file is not
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9.7.4.1 Lookup Key 173 The data str
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9.8 Interactive Generator Block MOS
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9.10 Busstatistic Window 177 The bu
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179 mostLightLockError Most_Error E
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9.12.5 Hardware API 9.12.5.1 Optoly
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XOR Filter long MostSetXorFilter( )
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9.13.3 MOST XML Catalog 185 The dem
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9.14.8 Weird Spurious Events from M
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10 Option .FlexRay In this chapter
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11 Index ! ! Load symbol · 53 < k
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Error frame · 41, 64, 95, 119, 123
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R Radio button · 5 Raw value · 13
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