Hello,
I am trying to connect 4 serial devices to a new install of FreeBSD 12.2 using CH340 USB to serial adapters. The boot display for all 4 show the same information (except for unit address of course).
They also show similar information for
and
My problem is that only one works. The other 3 fail with a "no write access" error message.
The man page states:
TIA for any help.
JJ
I am trying to connect 4 serial devices to a new install of FreeBSD 12.2 using CH340 USB to serial adapters. The boot display for all 4 show the same information (except for unit address of course).
Code:
Feb 11 23:41:34 new-sys kernel: ugen1.5: <vendor 0x1a86 USB2.0-Ser> at usbus1
Feb 11 23:41:34 new-sys kernel: uchcom0 on uhub4
Feb 11 23:41:34 new-sys kernel: uchcom0: <vendor 0x1a86 USB2.0-Ser, rev 1.10/2.54, addr 5> on usbus1
Feb 11 23:41:34 new-sys kernel: uchcom0: CH340 detected
Code:
usbconfig list
Code:
usbconfig -d ugen1.5 dump_all_config_desc
My problem is that only one works. The other 3 fail with a "no write access" error message.
The man page states:
The adapter that works is labeled "HL-340". The other 3 are labeled "340". Does that indicate a difference in the adapter that can be addressed by a quirk? Or is there some other problem?
TIA for any help.
JJ