iiod(1)

💖 iiod — the IIO Daemon, bestie edition 💖

okay so real quick — this is iiod(1) from the LibIIO Utilities set, and she is that girl. pull up a chair, grab a strawberry 🍓, and let's get into it.

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✨ NAME ✨

iiod — the IIO Daemon. that's it, that's the name, she's iconic 👑

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🌸 SYNOPSIS 🌸

iiod [ options ]

literally just her and her options, living her best life.

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🦋 DESCRIPTION 🦋

so iiod is a server built on top of Libiio, and what she does is share a Libiio context across the network, USB, or a UART link. no cap. one context, many friends, all vibes. 💅

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🎀 COMMANDS 🎀

one bullet per option, no skips, no summaries, we don't gatekeep here:

• -V, --version — shows you the version of this program. cute lil flex.
• -d, --debug — uses the alternative debug interface. and bestie, it is incompatible, that's literally stated, so don't come crying to me.
• -D, --demux — demux channels directly on the server. doing the work herself, main character energy fr fr.
• -i, --interactive — runs iiod in the controlling terminal.
• -a, --aio — use asynchronous I/O. fast girl behavior 🔥
• -F, --ffs <arg> — uses the given FunctionFS mountpoint to serve over USB.
• -n, --nb-pipes <arg> — specifies the number of USB pipes (ep couples) to use.
• -s, --serial <arg> — runs iiod on the specified UART.
• -p, --port <arg> — the port to listen on, and the default is 30431. and here's the tea: using --port 0 will pick an ephemeral port (dynamic / unused in the range between 32768–60999). so mysterious of her ✨
• -u, --uri — the Uniform Resource Identifier (uri) for connecting to devices, and it can be one of these:
  • ip:[address] — a network address, either numeric (192.168.0.1) or a network hostname.
  • ip: — blank. if compiled with zeroconf support, she will find an IIO device on network. she'll hunt it down herself 🕵️‍♀️
  • usb:[device:port:instance] — normally returned from iio_info -S.
  • serial:[port],[baud],[settings] — these are controlled, and they need to match the iiod (or tinyiiod) on the other end of the serial port. mutual understanding, as it should be 🫶
    • [port] is something like '/dev/ttyUSB0' on Linux, and 'COM4' on Windows.
    • [baud] is normally one of 110, 300, 600, 1200, 2400, 4800, 9600, 14400, 19200, 38400, 57600, 115200 [default], 128000 or 256000, but ngl it can vary system to system.
    • [settings] would normally be configured as '8n1', and this is controlled by:
      • data_bits: (5, 6, 7, 8 [default], or 9)
      • parity_bits: ('n' none [default], 'o' odd, 'e' even, 'm' mark, or 's' space)
      • stop_bits: (1 [default], or 2)
      • flow_control: ('0' none [default], 'x' Xon Xoff, 'r' RTSCTS, or 'd' DTRDSR)
  • local: — with no address part. this is the default. she stays home 💜

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💀 RETURN VALUE 💀

if the specified device is not found, a non-zero exit code is returned. so like, check ur uri before u text her back, okay? 😭

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bestie PSA: the debug interface in -d is explicitly described as alternative (incompatible) — that's not me being dramatic, that's the manpage. respect the caveat. 🙈

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and that's the whole page, no notes. slay. ✨🌸🦋🎀💅

signing off with the receipts: this is from libiio-0.26, dated 06 February 2026. periodt. 👑