UCOM(4) | Device Drivers Manual | UCOM(4) |
ucom
—
ucom* at u3g?
ucom* at uark?
ucom* at ubsa?
ucom* at uchcom?
ucom* at uftdi?
ucom* at ugensa?
ucom* at uhmodem?
ucom* at uipaq?
ucom* at ukyopon?
ucom* at umcs? portno ?
ucom* at umct?
ucom* at umodem?
ucom* at uplcom?
ucom* at uslsa?
ucom* at uvisor? portno ?
ucom* at uvscom?
ucom* at uxrcom?
ucom
driver attaches to USB modems, serial ports,
and other devices that need to look like a tty. The
ucom
driver shows a behaviour like a
tty(4). This means that normal
programs such as tip(1) or
pppd(8) can be used to access the
device.
The portno locator can be used to decide which port to use for device that have multiple external ports.
Note that while ucom
supports the
(undocumented) pulse-per-second API normally used on conventional serial
ports, USB serial devices typically have a varying latency around 1 ms due
to the USB frame structure.
The ttyXX devices are traditional dial-in devices; the dtyXX devices are used for dial-out. (See tty(4).)
ucom
driver appeared in NetBSD
1.5.
May 5, 2019 | NetBSD 9.4 |