IBLINES(3)

💖 NAME 💖

okay bestie, meet iblines(3) — she's from the Traditional API Functions girlies, and she is here to monitor bus lines (board). No cap. 💅

iblines — monitor bus lines (board) 🦋

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✨ SYNOPSIS ✨

#include <gpib/ib.h>

int iblines(int ud, short *line_status);

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🌸 DESCRIPTION 🌸

So like, iblines() is the icon you call when you want the status of the control and handshaking bus lines of the bus. 👑 You tell her which board is doing the monitoring with the ud argument, and she writes the status of the various bus lines to the location specified by line_status. Periodt.

Some older chips are literally not capable of reporting the status of the bus lines, so each line has two corresponding bits in line_status. One bit indicates if the board can monitor the line, and the other bit indicates the line's state. The meaning of the line_status bits are as follows:

Table 9. line status bits — here's the constant, value, and description tea: ☕

• ValidDAV — value 0x1 — description: The BusDAV bit is valid.
• ValidNDAC — value 0x2 — description: The BusNDAC bit is valid.
• ValidNRFD — value 0x4 — description: The BusNRFD bit is valid.
• ValidIFC — value 0x8 — description: The BusIFC bit is valid.
• ValidREN — value 0x10 — description: The BusREN bit is valid.
• ValidSRQ — value 0x20 — description: The BusSRQ bit is valid.
• ValidATN — value 0x40 — description: The BusATN bit is valid.
• ValidEOI — value 0x80 — description: The BusEOI bit is valid.
• BusDAV — value 0x100 — description: Set/cleared if the DAV line is asserted/unasserted.
• BusNDAC — value 0x200 — description: Set/cleared if the NDAC line is asserted/unasserted.
• BusNRFD — value 0x400 — description: Set/cleared if the NRFD line is asserted/unasserted.
• BusIFC — value 0x800 — description: Set/cleared if the IFC line is asserted/unasserted.
• BusREN — value 0x1000 — description: Set/cleared if the REN line is asserted/unasserted.
• BusSRQ — value 0x2000 — description: Set/cleared if the SRQ line is asserted/unasserted.
• BusATN — value 0x4000 — description: Set/cleared if the ATN line is asserted/unasserted.
• BusEOI — value 0x8000 — description: Set/cleared if the EOI line is asserted/unasserted.

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🎀 RETURN VALUE 🎀

The value of ibsta is returned. That's it, that's the tea. ✨

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🌈 COPYRIGHT 🌈

Copyright © 2003-2006, 2008 Frank Mori Hess 💜

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okay bye bestie 🫶 this page is from linux-gpib 4.3.7, dated 07/06/2026 — go monitor those bus lines and slay 💅🌸