I know that feeling! It was working well enough for me that I could get the information.
As I have mentioned in some other threads, like:
Where in that post, I was trying to understand the communications of a PS4 controller connected up to a Teensy through the USB Host port.
As I mentioned back then, my capture and then dump out to text/csv file, the output was
1.9 million lines long. I used a linux grep command, where it looked for the data… lines and output the line before it as well… Then I used SublimeText with global search and replace to
remove some other stuff and concatenate them and got down to about 3K lines.
Many of those were simple the next joystick packet which I could ignore and got it down
to something like 50-100 lines that I really needed to look through.