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

[dave p. <dpe...@gm...>]

Hi Stefan,
Attached is a little programme slave_test to demonstrate pure slave aka
device mode.
It uses minor 0 in board mode.
On the slave side run slave_test and on the master ibterm.

On the slave side:







*$ cc -o slave_test slave_test.c -lgpib$ ./slave_test Got helloGot byeGot
quitslave done$ *

On the master side:












*$ ibterm -d 1Attempting to open /dev/gpib0pad = 1, sad = 0, timeout = 10,
send_eoi = 1, eos_mode = 0x0000ibterm>helloReply: helloibterm>byeReply:
byeibterm>quitibterm><CTRL-D>ibterm: Done.$ *

On Tue, 10 Jan 2023 at 17:11, Olejnik, Stefan <ste...@fl...>
wrote:

> 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....
>
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