Analog Intel I7 CPU usage meter on XIAO over USB

I am going to make analog Intel I7 CPU meter usage project with XIAO by sending CPU % usage on my notebook by C++ program which will send one byte of data each 100 ms to XIAO over USB.

After receiving the byte on XIAO the DAC will convert the % value into voltage (0 to 3.3V) and classic analog µ-Ampermeter will display it.

I have already tested the msc_ramdisk example (Adafruit_TinyUSB_Arduino library) but I don’t have any experience with USB data exchange yet.

Any advice how to program it?