Hi!
I am using the PCI GPIB board from National Instruments and I need to program a Qt console Application using the libgpib.so. The connection to my Laser Diode Controller can't be done by the NI driver because I'm using ubuntu but Linux distributes a good driver for GPIB boards. When I use the program ibtest, I can use my laser controller with no problem. The next step is to program the QT console application but I keep getting error while writing strings to the device. I will post my code as attachment but I'm using the same code that comes with the Linux GPIB driver and that works. The library is the libgpib.so.0.1.7 and when I opened it with Eclipse looked the right one to use.
Error message:
You can:
w(a)it for an event
write (c)ommand bytes to bus (system controller only)
send (d)evice clear (device only)
change remote (e)nable line (system controller only)
(g)o to standby (release ATN line, system controller only)
send (i)nterface clear (system controller only)
ta(k)e control (assert ATN line, system controller only)
get bus (l)ine status (board only)
go to local (m)ode
change end (o)f transmission configuration
(q)uit
(r)ead string
perform (s)erial poll (device only)
change (t)imeout on io operations
request ser(v)ice (board only)
(w)rite data string
: w
enter a string to send to your device: *IDN?
sending string: *IDN?
libgpib: invalid descriptor
libgpib: invalid descriptor
Please give me some advice.
Thanks
