iio_read_channel_attribute(9)

📦 version 7.3.1, in nixpkgs unstable

✨ iio_read_channel_attribute 💅 — the Kernel API Manual moment

okay so bestie, welcome to iio_read_channel_attribute(9) 🎀 this is the little kernel helper that goes and reads values from the device attribute, and honestly? it's giving main character energy in the IIO consumer-API friend group 🦋

🌸 NAME 🌸

iio_read_channel_attribute — read values from the device attribute 💖

✨ SYNOPSIS ✨

int iio_read_channel_attribute (struct iio_channel *chan , int *val ,
       int *val2 , enum iio_chan_info_enum attribute );

like, that's the whole signature, no cap 👑

🫶 ARGUMENTS 🫶

  • chan — the channel being queried 💅 this is the one you're asking the questions
  • val — value being written ✍️ yes bestie, that's what the page says
  • val2 — value being written too — and lowkey, val2 use depends on attribute type, so don't just assume 🫠
  • attribute — info attribute to be written 📝

🌈 DESCRIPTION 🌈

okay so here's the vibe check: it returns an error code if it failed 😭 but if it didn't fail, it returns a description of what's in val and val2 — like IIO_VAL_INT_PLUS_MICRO, which tells us we have a value of val + val2/1e6 🔥

literally that's it, that's the whole function, and it ate 💅✨

🦋 SEE ALSO 🦋

Kernel file ./include/linux/iio/consumer.h — struct iio_channel(9), plus the whole squad:

okay and finally, the little sign-off moment 🥹 this page lives under ./include/linux/iio, it's dated October 2026, and it belongs to the Kernel API Manual — periodt 💜🧚‍♀️

📦 where this page comes from