Experimental Physics and
Industrial Control System

[email protected] (William Lupton) · Tue, 1 Feb 2000 08:40:21 -1000

Ralph,

Thanks for the analysis:
>For an output, I can think of three reasonable choices that may be
>controlled without having to introduce another field in OUT:
>1. PINI = NO, DOL = don't care...
>2. PINI = YES, DOL is set (constant or link)...
>3. PINI = YES, DOL is not set...

Given the following...
>Some of the database configuration tools (i.e. CapFast) do not handle
>the new situation correctly. Users may have problems as they might not
>be able to _not_ set a DOL field...

...I feel that there _should_ be explicit control over whether output records
read the VxWorks variable at initialization time. Also, I think that
this is necessary in order to achieve backwards compatibility.

Also, Bob D suggested allowing the direct specification of an address. I
have permitted this (if the global variable doesn't exist, the name is
passed to strtoul(), so octal, decimal and hexadecimal are all
allowed).  The result is that you can now use VxWorks global variable
device support for direct access to device registers if you so desire.

William

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System