My chart crashes， I want the chart to only display the data of the last 30s, and the rest of the data is not needed. I'm testing the timestamp is achievable, but it won't work on the serial port.

[Lep]

This is a serial input, the data volume per second is 12000bytes (1k Sampling rate*4channel*3bytes (single-channel sampling data size)). The input content of the serial port is as follows (part of the picture is intercepted) ：serial port output format: 3 bytes data + 'comma'

The procedure is as follows:

[Lep]

The code is to long, I can't insert it.