[Linux-gpib-general] Need help with linux-gpib on Raspberry Pi 4

[Edevaldo P. da S. J. <ede...@gm...>]

I tried to install the NI GPIB-USB-HS device and use it on a Raspberry Pi
4. But I cannot get to communicate with devices connected to it.

Compiling and installing linux-gpib seems to have worked well. I didn't see
any errors.
When I connect the device to the Pi and run dmesg I see:








*[ 3184.306689] usb 1-1.1: new high-speed USB device number 7 using
xhci_hcd[ 3184.547108] usb 1-1.1: config 1 interface 0 altsetting 0
endpoint 0x81 has an invalid bInterval 0, changing to 7[ 3184.547619] usb
1-1.1: New USB device found, idVendor=3923, idProduct=709b, bcdDevice=
1.01[ 3184.547632] usb 1-1.1: New USB device strings: Mfr=1, Product=2,
SerialNumber=3[ 3184.547645] usb 1-1.1: Product: GPIB-USB-HS[ 3184.547657]
usb 1-1.1: Manufacturer: National Instruments[ 3184.547668] usb 1-1.1:
SerialNumber: 0184AC93[ 3184.551672] ni_usb_gpib: probe succeeded for path:
usb-0000:01:00.0-1.1*

Typing lsusb I see:
*Bus 001 Device 007: ID 3923:709b National Instruments Corp. GPIB-USB-HS*

And "lsmod | grep gpib" results in:

*ni_usb_gpib            40960  0gpib_common            49152  1 ni_usb_gpib*

My /etc/gpib.conf looks:







































*interface {    minor       = 0             /* board index, minor = 0 uses
/dev/gpib0, minor = 1 uses /dev/gpib1 */    board_type  = "ni_usb_b"    /*
type of interface board being used */    name        = "violet"      /*
optional name, allows you to get a board descriptor using ibfind() */
pad         = 0             /* primary address of interface             */
  sad         = 0             /* secondary address of interface
*/    timeout     = T30s          /* timeout for commands */    eos
= 0x0a          /* EOS Byte, 0xa is newline and 0xd is carriage return */
  set-reos    = yes           /* Terminate read if EOS */    set-bin     =
no            /* Compare EOS 8-bit */    set-xeos    = no            /*
Assert EOI whenever EOS byte is sent */    set-eot     = yes           /*
Assert EOI with last byte on writes */    master      = yes           /*
interface board is system controller */}device {    minor = 0          /*
minor number for interface this device is connected to */    pad = 17
    /* Primary address */    name = "K2000"     /* device mnemonic */
sad = 0            /* Secondary address */    eos = 0xa          /* EOS
byte, 0xa is newline and 0xd is carriage return */    set-reos = yes     /*
Terminate read if EOS */    set-bin = yes      /* Compare EOS 8-bit */
set-xeos = no      /* Assert EOI whenever EOS byte is sent */    set-eot =
yes      /* Assert EOI with last byte on writes */}device {    minor = 0
       /* minor number for interface this device is connected to */    pad
= 16           /* Primary address */    name = "K2001M"    /* device
mnemonic */    sad = 0            /* Secondary address */    eos = 0xa
     /* EOS byte, 0xa is newline and 0xd is carriage return */    set-reos
= yes     /* Terminate read if EOS */    set-bin = yes      /* Compare EOS
8-bit */    set-xeos = no      /* Assert EOI whenever EOS byte is sent */
  set-eot = yes      /* Assert EOI with last byte on writes */}*

But running "sudo gpib_config" results in:


*failed to configure boardtype: ni_pcifailed to configure boardmain:
Invalid argument*

If I run something like "sudo gpib_config -t ni_usb_b --sre --ifc" I get no
errors.
And after I run it "sudo ibtest" seems to start but I get get any response
from devices on the bus:





*Do you wish to open a (d)evice or an interface (b)oard? (you probably want
to open a device): denter primary gpib address for device you wish to open
[0-30]: 16trying to open pad = 16 on /dev/gpib0 ...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*
* send group e(x)ecute trigger (device only)*










*: wenter a string to send to your device: *IDN?sending string: *IDN?gpib
status is: ibsta = 0xc100  < ERR TIMO CMPL >iberr= 6EABO 6: Operation
abortedibcntl = 0*

Any ideas on what I could try to fix the problem? The GPIB card works ok on
windows. I have no other linux machines to test it.

Thanks a lot!

Edevaldo