[Linux-gpib-general] GPIB as a pure slave

[Olejnik, S. <ste...@fl...>]

I have the troubles with GPIB interface - National Instruments PCIe-GPIB. Kernel driver TNT4882. Configuration is as a pure slave - just listen and answer:
interface {
        minor = 0       /* board index, minor = 0 uses /dev/gpib0, minor = 1 uses /dev/gpib1, etc. */
        board_type = "ni_pci"
        name = "violet" /* optional name, allows you to get a board descriptor using ibfind() */
        pad = 1 /* primary address of interface             */
        sad = 0 /* secondary address of interface           */
        timeout = T10s  /* timeout for commands */

        eos = 0x0a      /* EOS Byte, 0xa is newline and 0xd is carriage return */
        set-reos = no   /* 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 = no     /* interface board is system controller */
}

When I am using "ibtest" then write command returns TIMO:
: w
enter a string to send to your device: testString
sending string: testString

[  200.928468] tnt4882: write timed out
gpib status is:
ibsta = 0xc100  < ERR TIMO CMPL >
iberr= 6
EABO 6: Operation aborted

I have created test SW and find out, that if I am using "ibwrta/ibwait" command twice, second try is always successful. First returns TIMO.
Reading is OK.

On the other side is NI PC as a CIC.

Thanks for any help....

________________________________

Please be advised that this email may contain confidential information. If you are not the intended recipient, please notify us by email by replying to the sender and delete this message.