SIMPLE SOLUTIONS

GPIB(4FREEBSD) - man page online | special files

General-Purpose Instrument Bus (GPIB) driver.

Chapter
January 24, 2010
GPIB(4)                            BSD Kernel Interfaces Manual                           GPIB(4)

NAME

gpib — General-Purpose Instrument Bus (GPIB) driver

SYNOPSIS

Either of the pcii(4) or tnt4882(4) drivers use this driver as the backend.

DESCRIPTION

The gpib driver provides support for driving an IEEE-488 bus, also called IEC-625 (or just "IEC bus"), or HP-IB (Hewlett Packard Instrument Bus), or GPIB (General Purpose Instrument Bus). The device can become either a listener, talker, controller, and in particular a mas‐ ter controller on the bus. Example The following example code queries the device provided as argv[1] for its identification response. /* compile with: cc -O -o ibtest ibtest.c -lgpib */ #include <stdio.h> #include <stdlib.h> #include <err.h> #include <vis.h> #include <gpib/gpib.h> int main(int argc, char **argv) { int dmm; unsigned char buf[100]; char vbuf[sizeof(buf) * 4]; /* DVM */ dmm = ibdev(0, (argc > 1? atoi(argv[1]): 7), 0, T10s, 1, 0); if (dmm < 0) errx(1, "ibdev = %d\n", dmm); ibwrt(dmm, "*IDN?\r\n", 7); ibrd(dmm, buf, sizeof(buf) - 1); strvisx(vbuf, buf, ibcnt, VIS_WHITE | VIS_CSTYLE); printf("%s\n", vbuf); return (0); }

FILES

/dev/gpibNib Main device node to access the driver. /dev/gpibNl Listen-only entry to the driver. When opening, an instrument can send data to this device on the bus in an unaddressed mode, for example hard-copy printer data.

SEE ALSO

gpib(3), pcii(4), tnt4882(4)

HISTORY

The gpib driver was written by Poul-Henning Kamp, and first appeared in FreeBSD 5.4.

AUTHORS

This manual page was written by Jörg Wunsch.
BSD January 24, 2010 BSD
This manual Reference Other manuals
gpib(4freebsd) referred by pcii(4freebsd) | tnt4882(4freebsd)
refer to pcii(4freebsd) | tnt4882(4freebsd)