https://sourceforge.net/p/linux-gpib/support-requests/10/2007-01-31T21:19:25ZRecent changes to 10: IBOPENDEV ioctl failed2007-01-31T21:19:25Z2007-01-31T21:19:25Zkinson penghttps://sourceforge.net/u/qzpeng/https://sourceforge.netf835f3e5f9cbc80016e83c7dc97e7f0b740c833f

<div class="markdown_content"><p>my program is very simple, test.c :</p> <p>#include "gpib/ib.h"<br /> main(){<br /> int dvm; /* The Unit descriptor of the device */<br /> char cmd[80]; /* A buffer for the string*/<br /> /* get device from configuration */<br /> if( (dvm=ibfind("voltmeter")) &amp; ERR ){<br /> printf("Can not find voltmeter! dvm=%d\n",dvm);<br /> // exit(1);<br /> }<br /> if( (dvm=ibfind("ni_gpib")) &amp; ERR ){<br /> printf("Can not find board! dvm=%d\n",dvm);<br /> // exit(1);<br /> }<br /> if ( (dvm=ibdev(0,1,0,T3s,0,0x0a)) &amp; ERR) {<br /> printf("can not find board... dvm=%d\n",dvm);<br /> // exit(1);<br /> }<br /> if ( (dvm=ibdev(0,3,0,T3s,0,0xa)) &amp; ERR) {<br /> printf("can not find dvm... dvm=%d\n",dvm);<br /> exit(1);<br /> }<br /> }</p> <p>output;<br /> [qzpeng@beauty gpib]$ ./test<br /> libgpib: IBOPENDEV ioctl failed<br /> libgpib: error in is_cic()!<br /> libgpib: ibfind failed to get descriptor<br /> Can not find voltmeter! dvm=-1<br /> libgpib: IBOPENDEV ioctl failed<br /> libgpib: ibfind failed to get descriptor<br /> Can not find board! dvm=-1<br /> libgpib: IBOPENDEV ioctl failed<br /> libgpib: error in is_cic()!<br /> can not find board... dvm=-1<br /> libgpib: IBOPENDEV ioctl failed<br /> libgpib: error in is_cic()!<br /> can not find dvm... dvm=-1</p> <p>----------------------------------</p> <p>thanks for any kind of help or hint.</p> <p>Best,<br /> kinson</p></div>