[Question] Retrieve timestamp from frame

[JavierCorado]

While looking at the documentation it mentions that after the identification and before the data fields there is a timestamp in the XCP message frame.

Is there a method inside the master that could achieve this? Or would we have to retrieve the raw data to access this value? This would be for DAQ and polling

I noticed that in the base transport layer, there is a timestamp, but is this the same one that I am referring to?

[christoph2]

Well, there's a more or less confusing hierarchy of timestamps:

• timestamps as depicted above only apply to DAQ/STIM packets and are generated by your ECU or simulator; extraction is currently left to the user (maybe there will be an API).
• pyxcp generates its own timestamps on every frame received, accessible to the user.

But the story continues, hardware interfaces may also generate timestamps (these clock-sources are currently NOT provided by pyxcp), for example

• s. CANlib documentation on time measurement
• Starting with Windows 11, there is support for (fairly complex) UDP cross-timestamping (Precision Time Protocol).