On Tue, Jun 21, 2022 at 12:38:22AM +0000, michael.lee@xxxxxxxxx wrote: > Dear Chris, > > The below is the reply from Japan. > > Dose they do the below commnad after connect B5L to USB? > > sudo modprobe usbserial vendor=0x0590 product=0x00ca So that means this is just a "generic" usb-serial device, not a cdc-acm one at all. Just add the device id to the generic usb-serial driver and you should be fine. BUT, that implies that the interrupt endpoints are useless? Why are they there? How is flow control handled in this device? Perhaps ask what the chip is in the device, that might help out here more. thanks, greg k-h
