With the rapid development of automotive electronics industry , The amount of data and devices on the bus are increasing , However , Tradition CAN Can only support the highest 1Mbit/s Transmission rate , It is difficult to meet the increasing demand for on-board communication .

therefore ,CAN FD There is .

CAN FD（CAN with Flexible Data Rate） As CAN agreement （ be based on CAN2.0） Improvement , The length of the data field is greatly expanded ：

l stay DLC Less than or equal to 8 Time and CAN The bus is the same ;

l Greater than 8 The length of data field can reach 64 byte ;

l CAN FD Removed support for remote frames , use RRS Bit replaced RTR position ;

l Also at the same time CRC The algorithm has changed .

therefore ,CAN FD With a faster transmission rate , The maximum speed can reach 8Mbps. that CAN FD How to apply Vector What about the diagnostic tool chain ？ So let's see .

STEP1 Generate diagnostic database

CANdelaStudio It is a tool software for the definition of diagnostic requirements and the development of diagnostic protocols , Can be used to define ECU The diagnostic function of , And generate a diagnostic database （CDD file ）, It can optimize the whole diagnostic development process .

CANdelaStudio Support document templates （ Content , A document template corresponds to a diagnostic specification , It contains the right ECU All allowed basic services and in each ECU A formal description of the mandatory functions that must be implemented in ）, It can meet various special needs of different manufacturers for the same standard tool .

CANdelaStudio

The features are as follows ：

1.  Simple and friendly man-machine interface

2.  A template effectively ensures the data consistency in the development process , And allow diagnostic data to be in different OEM Reuse in the specification agreement

3.  Import and export various data formats （ODX, CSV, RTF, HTML, A2L, XML, CDI）

4. Support multiple protocol standards ：KWP2000,UDS, WWH‐OBD, J1939, DoIP, FlexRay

5.  Can pass Diva Conduct automated tests

So how do we get there CANdelaStudio Create a new one in CAN FD Diagnostic database CDD Well ？ Steps are as follows ：

1. CANdelaStudio Middle configuration CDD Support CAN FD Bus .

·  First in 【CDDT】（ Diagnostic database template ） Select the corresponding bus as 【supported】,

·  And then CDD Define and configure multi bus support in .

such 【Supported Interface】(“Interface” That is to say ECU Supported bus ) The corresponding bus type will appear in the list .

2. CANdelaStudio Middle configuration CAN FD Parameters . Such as request response ID, Physics / Function search ID, Application layer time parameters , Transport layer time parameters, etc .

Please note that ：CDD You need to switch to Expert View.

STEP2 Generate test cases

Edit well CDD After the document , We need to put CDD Import to CANoe.DiVa in .

CANoe.DiVa yes Vector Based on loading the diagnostic database CDD A tool for automatically generating diagnostic test cases , Its functional features are as follows ：

1.  Tools to automatically generate diagnostic test cases , The test coverage is authoritatively guaranteed

2.  Automatically resolve the diagnostic requirements in the diagnostic database , Automatically design a reasonable diagnostic test strategy

3. CANoe Execute test cases and generate test reports , Analyze the diagnostic test report from multiple perspectives

4. Supported diagnostic protocols ：UDS,KWP,OBD,GMW3110

5. Supported diagnostic databases ：CDD,ODX（2.0.1 and 2.2.0）

6.  It can be extended through user-defined test mode

7.  Fully integrated into the diagnostic product system

Let's take a look at how to CDD Import to CANoe.DiVa in ：

1. stay CANoe.DiVa Load our edited CDD Diagnostic database ：

·【 New project name 】→【 Project storage path 】→【 load CDD file 】 You can automatically map CDD Information

·  Select to be tested 【ECU】 and 【Variant】

2. CAN FD Not a classic CAN, So we need to 【CANoe.DiVa】 Check support 【 Non classic bus 】, Non classical buses include （CAN FD、 Extended frames 、 Not CAN Bus ）.

3. CANoe.DiVa 13.0 Previous versions only supported CAN Of TP Layer test ,13.0 Later versions support CAN FD Of TP Layer test , Check this option if necessary .

4. Click... After configuration 【Generate】, Automatic test case generation .

STEP3 Execute test case

use CANoe.DiVa After generating diagnostic test cases , We need to be in CANoe Execute diagnostic test cases and generate test reports . Here's a point to note ：CANoe And CANoe.DiVa The main version of the software must be the same , Otherwise, an error will be reported .

1. stay CANoe Of 【Diagnostics】 Interface import DIVA engineering .

2. After importing, it will automatically recognize Variant And the bus .

3. stay 【Test】 You can see CANoe.DiVa Test Engineering .

4. Open the test report after the test .

CANFD Vector The application sharing of diagnostic testing tool chain is completed here , I believe that through the above applications , You must be right Vector Diagnostic tool chain CANdelaStudio and CANoe.DiVa Of CAN FD Applications have new understandings .

So to conclude ：CANdelaStudio Make CDD( Diagnostic database ), Select the supported bus in the diagnostic database , And modify its corresponding parameters , And then CDD File import CANoe.DiVa. Remember here CAN FD Choose to support non classic buses ,Diva Generate test scripts and use cases , Finally through CANoe Execute diagnostic test cases and generate test reports .

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CANdelaStudio and CANoe.DiVa As an important member of the diagnostic tool chain , It can greatly enrich our diagnostic testing process .CANoe.DiVa The automatically generated diagnostic engineering test covers a wide range ,CDD All diagnostic services in involve , Invalid subfunctions will also be covered , Service and request format . stay CANoe After the test project is imported and executed , Test reports will be generated , You can use the web page to view or CANoe.DiVa To view the .

If there are any problems in the future , Welcome to contact [email protected] Get support .