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pyvisa / pyvisa-py

A pure python PyVISA backend
https://pyvisa-py.readthedocs.io
MIT License
282 stars 120 forks source link

usb raw interface subclass #140

Open greyltc opened 6 years ago

greyltc commented 6 years ago

https://github.com/pyvisa/pyvisa-py/blob/d5da20422b274795680e04467c3955ebbf9ac408/pyvisa-py/protocols/usbraw.py#L32

Just curious, why must this be 255?

I have a device I'd like to use that has a value 0 here.

MatthieuDartiailh commented 6 years ago

I honestly do not know, may be worth checking both libusb and VISA specifications for this.