can database - Message Cyclic & Trigger

49 次查看（过去 30 天）
Mingqi Shi
Mingqi Shi 2018-9-14
回答： Carlos Orduno 2019-12-11
I have a questions about canDatabase in MATLAB. From vector tool CANdb, whether/how a CAN message is transmitted can be shown inside Tx Method & Cycle Time, as shown in figure 'CANdb'; However, If I type script 'h = canDatabase('database.dbc')', The most similar information inside 'h' I could find is from 'h.MessageInfo(i).AtrributeInfo', as show in figure 'MessageInfo' . How could I find/match the related information to CANdb? I need to obtain the string(whether 'FixedPeriodic', 'Event Periodic' or 'Event') for some further purpose.
Figure CANDB From Vector CANdb </matlabcentral/answers/uploaded_files/132427/CANDb.PNG>
Figure MessgaeInfo from MATLAB </matlabcentral/answers/uploaded_files/132429/MessageInfo.PNG>

请先登录，再回答此问题。

回答（1 个）

Carlos Orduno
Carlos Orduno 2019-12-11
I finally found it.
https://www.mathworks.com/help/vnt/ug/attributeinfo.html
View Message Attribute Information
View message attribute information from CAN database.
db = canDatabase('J1939DB.dbc');
db.Messages
'A1'
'A1DEFI'
'A1DEFSI'
db.MessageInfo(1).Attributes
a = db.MessageInfo(1).Attributes
a =
'GenMsgCycleTime'
'GenMsgCycleTimeFast'
'GenMsgDelayTime'
'VFrameFormat'
info = attributeInfo(db,'Message','GenMsgCycleTime','A1')
Name: 'GenMsgCycleTime'
ObjectType: 'Message'
DataType: 'Undefined'
DefaultValue: 0
Value: 500

类别

在 Help Center 和 File Exchange 中查找有关 Communication in MATLAB 的更多信息

标签

产品


版本

R2015b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by