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GPIB(4) | Device Drivers 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¶
Thegpib
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 master 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¶
Thegpib
driver was written by Poul-Henning
Kamp, and first appeared in FreeBSD 5.4.
AUTHORS¶
This manual page was written by Jörg Wunsch.January 24, 2010 | Debian |