UMOSCOM(4)

📦 version 15.1, in freebsd 14.5, freebsd 15.1, nixpkgs unstable

💅 UMOSCOM(4) — like, the MOSCHIP USB serial thing, bestie ✨

okay so real quick, this is a page from the Kernel Interfaces Manual, section 4, and it's all about umoscom 🦋 — the driver that gives you USB support for serial adapters based on chips made by MOSCHIP. yes, MOSCHIP. that's the whole vibe. let's get into it 💖

🌸 NAME 🌸

umoscom — USB support for serial adapters based on chips made by MOSCHIP ✨

🎀 SYNOPSIS 🎀

okay so here's the deal: you can bake this driver straight into the kernel, or you can be cute and load it as a module at boot. either way, slay 💅

To compile this driver into the kernel, place the following lines in your kernel configuration file:

device usb
device ucom
device umoscom

Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):

umoscom_load="YES"

✨ DESCRIPTION ✨

The umoscom driver provides support for various serial adapters based on chips from MOSCHIP. no cap, that's literally its job 🔥

The device is accessed through the ucom(4) driver, which makes it behave like a tty(4). so it's giving tty energy, because it is a tty. iconic 👑

🧚 FILES 🧚

These are the device nodes you'll see, bestie — memorise them iykyk 💀

  • /dev/ttyU* — for callin ports
  • /dev/ttyU*.init
  • /dev/ttyU*.lock — corresponding callin initial-state and lock-state devices
  • /dev/cuaU* — for callout ports
  • /dev/cuaU*.init
  • /dev/cuaU*.lock — corresponding callout initial-state and lock-state devices
pssst: ttyU* = callin, cuaU* = callout. don't mix 'em up, king 👑 the .init and .lock ones are the initial-state and lock-state buddies that go with each 💜

🌈 SEE ALSO 🌈

go read these next, fr fr 🫶

🦋 HISTORY 🦋

The umoscom driver appeared in OpenBSD and was ported to FreeBSD. glow-up of the century, honestly 🌸⭐

and that's the whole page, bestie 🎀 this beauty comes from Debian, dated April 26, 2017 — mwah, hope you had fun, drink some water 💖✨

📦 where this page comes from