Re: changing base address to NI1014-GPIB

[Ned Arnold <nda@aps.anl.gov>]

Gaspare,

You do NOT need to rebuild the entire EPICS release to relocate
VME base addresses.

What must be done is that the default base address specifications in 
module_types.h must be redefined AFTER loading iocCore but BEFORE
iocInit.  There is a file in base (src/drv/old/module_types.c) which
one can use as a template for overriding default parameters in module_types.h.

For your example, create a simple program in your application area 
(e.g. hardwareConfig.c) as follows :

/**************************/
#include <vxWorks.h>
#include <types.h>
#include <dbDefs.h>
#include <dbAccess.h>
#include <types.h>

#include <module_types.h>

hardwareConfig()
{
    NIGPIB_SHORT_OFF        = 0x8000;  /* Relocate NI-1014 to 0x8000 */
    NIGPIB_IVEC_BASE        = 100;
    NIGPIB_IRQ_LEVEL        = 5;
    
    return(0);
}

/**************************/

Then, in your startup script for the ioc, do the following ...

cd topbin
ld < iocCore
ld < myLib
ld < hardwareConfig.o
 
# change hardware configuration. 
hardwareConfig

...

iocInit



Peruse module_types.c to see what other things can be overridden (e.g. # of
cards, interrupt vectors, etc)


Hope this helps ...

	
	Ned
	


> Hello,
> 
> I am an EPICS user, and I have to change the base address of my NI1014
> module in a crowded VME crate. It is actually set to 0x5000. How do I
> change this setting in software, which files do I have to edit (other
> than base/include/module_types.h) ? 
> Do I have to recompile the all EPICS or can I do something simpler ? 
> Many other users using the same state machine (and same EPICS core) work
> with NI1014, but not having overpopulation problems in their crates they
> do not have (want) to change their base address.  Do I have a better
> chance other than having my own complete, private version of EPICS ?
> 
> My EPICS version is 3.12.2 and I am using the driver drvGpib.c
> in its 1991 version by John Winans.
> 
> Thank you very much for any insight you can give.
> 
> 	Gaspare Lo Curto
> 
> 
> 
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