Re: INES GPIB-PCI board: bugs in ver. 4.3.4 and above
dave penkler <[email protected]> Thu, 5 Oct 2023 21:02:19 +0200
| Newsgroups | gmane.linux.hardware.gpib.general |
|---|---|
| Message-ID | <CAL=kjP0NZ_LxSKi_-J_nuHVEL4Rr7C_j67SFJ0LYsABmEENcEg@mail.gmail.com> |
In 4.3.4 a change was introduced to check for command acceptors when ATN is asserted in order to provide the more pertinent error message ENOL no listeners when neither NRFD nor NDAC are asserted. It turned out that the problem was that the PTS-310 instrument, being configured in listen only mode, does not react to ATN being asserted. The workaround was to set the skip_check_for_command_acceptors field of the ines_xxx_interface structures to 1 in the ines driver which disables the check, essentially reverting to the 4.3.3 behaviour. Normally an instrument, even in listen only mode, should still assert NRFD/NDAC within 200ns of ATN being asserted. _______________________________________________ Linux-gpib-general mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/linux-gpib-general