adafruit
Allow to see progress of file copy
Is your feature request related to a problem? Please describe. First, thank you for the great library! When copying a file from a host computer (linux) to an sdcard connected to a pi pico using usb (with this example : https://github.com/adafruit/Adafruit_TinyUSB_Arduino/blob/master/examples/MassStorage/msc_sdfat/msc_sdfat.ino) , it works fine, but there is no progress bar on the linux side. For example, I copy a 20 Mb file, the progress bar stays at 0%, and after a minute of so, jumps to 100%. Since the transfer is slow (which is expected I guess), the end user might think the copy process staled.
Describe the solution you'd like If possible, provide a progress information of the copy to the host OS.
Describe alternatives you've considered One could warn the enduser that the copy will jump from 0 to 100% and might take a while to complete.
