FINDRQS(3)

💖 FINDRQS(3) — find device requesting service and read its status byte 💖

okay bestie, gather round, because FindRQS from the linux-gpib family is here and she is serving. This is section 3 of the manual, so it's a library call, aka a little function you get to summon in your C code. She's nosy in the best way — she goes looking for whichever device on the bus is like "me me me, I need attention!!" 🫶

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✨ NAME ✨

FindRQS — find device requesting service and read its status byte

like, the name literally tells you her whole personality: find the one screaming for service, read her byte. iconic. 👑

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🌸 SYNOPSIS 🌸

#include <gpib/ib.h>

void FindRQS(int board_desc, const Addr4882_t addressList[],
             short *status);

look at that signature, she's giving takes three arguments and gives you nothing back (void, no return value, she's mysterious like that). 💅

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🌈 DESCRIPTION 🌈

so here's the tea, fr fr:

FindRQS will serial poll the GPIB addresses specified in the addressList array until it finds a device requesting service. 🔍✨

once she finds that special someone, the status byte of the device requesting service gets stored in the location specified by status. 📥

and the addressList array index of the device requesting service? yeah, that gets returned in ibcnt. that's your "which one of y'all was it" receipt, keep it. 🧾

heads up bestie: if no device requesting service is found, an ETAB error is returned in iberr. so like, nobody raised their hand. awkward. 💀 not a crash, just an error code waiting for you in iberr.

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🎀 COPYRIGHT 🎀

Copyright © 2003-2006, 2008 Frank Mori Hess

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and that's the whole page, no notes. linux-gpib version 4.3.7, dated 07/06/2026 — mwah, thanks for reading, go poll some devices responsibly 🦋💜