How can I plot data when debugging (i.e. data array stored in RAM) with MCUxpresso IDE? If it not possible, how can I dump the data into a CSV file?
There is no direct functionality to do this. What you could do is, if you work out the memory range that your array occupies (for instance from the map file), you could then save it out from the Memory View...
Importing / Exporting memory to/from a target MCU
then process the exported file with external tools.
MCUXpresso IDE Support
Retrieving data ...