DC_USBHID_OPEN(3)

📦 version 0.9.0, in nixos 26.05, nixpkgs unstable

💖 DC_USBHID_OPEN(3) 💖

okay so bestie, welcome to the DC_USBHID_OPEN(3) page — it lives in the Library Functions Manual, and honestly? it's a little baddie. it does one thing and it does it slay. let's get into it 🫶

✨ NAME ✨

dc_usbhid_open — opens an iostream for a USB HID device 🌈

like, that's it. that's the whole vibe. she opens the iostream, she serves, she leaves 💅

📚 LIBRARY 📚

library “libdivecomputer”

yep, this one's from libdivecomputer — you're in the right place, no cap 💜

🎀 SYNOPSIS 🎀

#include <libdivecomputer/usbhid.h>

dc_status_t
dc_usbhid_open(dc_iostream_t **iostream, dc_context_t *context,
    dc_usbhid_device_t *device);

look at those parameters. three of them. iconic. main character energy all around 😭

🦋 DESCRIPTION 🦋

okay so what does she do? she opens an iostream for a USB HID device. literally that's her job and she's obsessed with it ✨

she accepts:

  • a context that you opened with dc_context_new(3) — like, you gotta have your context first, that's the vibe check before the vibe 💖
  • a device, which you usually find by searching through dc_usbhid_iterator_new(3) — that's where the devices hang out, iykyk 🧚
⚠️ okay this part matters, bestie, don't skip it: upon returning DC_STATUS_SUCCESS, the iostream pointer must be freed with dc_iostream_close(3). no leaks, no clutter, we close our handles in this house 🫶🔥

💀 RETURN VALUES 💀

she returns DC_STATUS_SUCCESS on success — slay 💅 — or one of several error values on error. not gonna lie, when it goes wrong it goes wrong, that's just life 😭

and on success? the iostream pointer gets filled in with an open handle. that's your girl, ready for business 👑

🌸 SEE ALSO 🌸

go read those too, she didn't come alone, she brought her whole friend group 💜✨

👑 AUTHORS 👑

the library “libdivecomputer” library was written by Jef Driesen, jef@libdivecomputer.org.

and this manpage is written by Vincent Hagen, vinnie@script4web.nl.

shoutout to both of them, fr fr, absolute legends 🫶🌸

and that's the whole page, pookie — this beauty's from Debian, dated June 5, 2020, and it's the DC_USBHID_OPEN(3) manual page. go forth and open some iostreams responsibly 💖🎀🦋⭐

📦 where this page comes from