How to get CAN message frequency by programming?
When I have messages with different periodicity in CAN file (.dbc) database, how would I know programmatically what is the periodicity of a given message? In the X-Net database editor, I can see the periodicity, but is it possible to get it in labview code?
In addition, some messages are to be sent, and some are to-be-received. How can we separate these channels/messages programmatically?
You can use the XNET screw database to browse XNET alias (.dbc files) and from there, you can browse to the bottom of the Cluster-> ECU-> frame (message) and get the properties of the image to read the time of transmission.
You can also read additional attributes of the .dbc (name/value pairs) with the XNET functions file as well (we often have a time-out message attribute).
There are some good examples of navigation in a XNET database in LabVIEW in the finder of the example. Look at the example of "Explore the database with tree" to know how to open the .dbc files and navigate through messages/signals to get the information you need.
Tags: NI Software
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