[Linux-gpib-general] Unsure why Agilent 82357B isn't working

[Brandon G. <bgu...@gm...>]

Hello,

I have been going crazy trying to get an Agilent 82357B GPIB adapter
(probably a clone) working on our CentOS system. I have not done this
before and am not a Linux pro, so please do not hesitate to ELI5.

System:
CentOS 7.9.2009, Linux kernel 3.10

I have installed linux-gpib from this website, which seems to be specific
to RHEL and this adapter:
https://github.com/vddvss/linux-gpib-firmware-packaging

(Should I have installed linux-gpib differently?)

**************************************************************************

Here is the output of *lsusb*

Unknown line at line 24
Bus 002 Device 003: ID 05e3:0620 Genesys Logic, Inc.
Bus 002 Device 002: ID 05e3:0620 Genesys Logic, Inc.
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 005: ID 0957:0718 Agilent Technologies, Inc.
Bus 001 Device 003: ID 09db:0127 Measurement Computing Corp.
Bus 001 Device 009: ID 03f0:1198 HP, Inc HID-compliant mouse
Bus 001 Device 008: ID 03f0:0024 HP, Inc KU-0316 Keyboard
Bus 001 Device 007: ID 8564:1000 Transcend Information, Inc. JetFlash
Bus 001 Device 006: ID 05e3:0608 Genesys Logic, Inc. Hub
Bus 001 Device 004: ID 05e3:0610 Genesys Logic, Inc. Hub
Bus 001 Device 002: ID 05e3:0610 Genesys Logic, Inc. Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

**********************************************************

I do not have to load any modules, they are already loaded when I reboot.
Here is the output of *lsmod | grep agi*

agilent_82357a         24212  0
gpib_common            46771  1 agilent_82357a

************************************************************

Here is the output of *sudo dmesg | grep -i -e gpib -e agilent*

[    1.885507] usb 1-3: Manufacturer: Agilent Technologies, Inc.
[   11.728168] gpib_common: loading out-of-tree module taints kernel.
[   11.728257] gpib_common: module verification failed: signature and/or
required key missing - tainting kernel
[   11.728719] Linux-GPIB 4.2.0 Driver
[   11.730832] agilent_82357a_gpib driver loadingprobe succeeded for path:
usb-0000:00:14.0-3
[   11.730873] usbcore: registered new interface driver agilent_82357a_gpib
[   11.730875] gpib: registered agilent_82357a interface
[   19.176698] agilent_82357a_attach: attached
[  541.714436] gpib0: exiting autospoll thread
[  541.714542] agilent_82357a_detach: detached
[  541.717520] agilent_82357a_attach: attached


**************************************************************

Here are the uncommented portions of my *gpib.conf*

interface {
        minor = 0       /* board index, minor = 0 uses /dev/gpib0, minor =
1 uses /dev/gpib1, etc. */
        board_type = "agilent_82357a"   /* type of interface board being
used */
        name = "agi"    /* optional name, allows you to get a board
descriptor using ibfind() */
        pad = 0 /* primary address of interface             */
        sad = 0 /* secondary address of interface           */
        timeout = T3s   /* 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 */

/* settings for boards that lack plug-n-play capability */
        base = 0        /* Base io ADDRESS                  */
        irq  = 0        /* Interrupt request level */
        dma  = 0        /* DMA channel (zero disables)      */

/* pci_bus and pci_slot can be used to distinguish two pci boards supported
by the same driver */
/*      pci_bus = 0 */
/*      pci_slot = 7 */

        master = yes    /* interface board is system controller */
}


device {
        minor = 0
        name = "hp3456a"
        pad = 22
        sad = 0
}

****************************************

Running *sudo gpib_config* executes without errors.

***************************************

I cannot load the firmware. Trying to execute:

*sudo fxload -t fx2 -D /dev/bus/usb/001/005 -I
/usr/share/usb/agilent_82357a/measat_releaseX1.8.hex*

produces the error: *can't modify CPUCS: Connection timed out*

***************************************

I tried adding a hotplug script but it does not seem to have any effect
(there was no /etc/hotplug directory, I had to create it).

**********************************
*ibtest *obviously fails, producing this error:

gpib status is:
ibsta = 0xc100  < ERR TIMO CMPL >
iberr= 14
EBUS 14: Bus error

ibcntl = 0

**************************

I am not sure what to try next -- any help would be greatly appreciated!

Thank you,
Brandon