NAME

       ibrd - read data bytes (board or device)

SYNOPSIS

       #include <gpib/ib.h>

       int ibrd(int ud, void *buffer, long num_bytes);

DESCRIPTION

       ibrd() is used to read data bytes from a device or board. The argument ud can be either a device or board
       descriptor. Up to num_bytes bytes are read into the user-supplied array buffer. The read may be
       terminated by a timeout occuring(see ibtmo()), the talker asserting the EOI line, the board receiving the
       end-of-string character (see ibeos()), receiving a device clear command, or receiving an interface clear.

       If ud is a device descriptor, then the library automatically handles addressing the device as talker and
       the interface board as listener before performing the read.

       If ud is a board descriptor, no addressing is performed and the board must be addressed as a listener by
       the controller-in-charge.

       After the ibrd() call, ibcnt and ibcntl are set to the number of bytes read.

RETURN VALUE

       The value of ibsta is returned.

COPYRIGHT

       Copyright © 2003-2006, 2008 Frank Mori Hess

linux-gpib 4.3.7                                   11/28/2025                                            IBRD(3)