Re: Failure probing for event generator

[Korhonen Timo <Timo.Korhonen@psi.ch>]

Hi Dayle,

although the problem was solved with Ge, I summarize it here as other 
people may have interest in this topic also.

The card was not recognized because it needs a special configuration 
sequence.
The EVG/EVR series 200 cards have been implemented according to the 
CR/CSR specification in VME64/VME64x standard (chapter 10 in the VME64x 
ANSI standard.) That is, before the cards are visible in the normally
used access windows (A32,A24,A16,...) they have to be configured. This 
configuration happens in a separate address space which is 
geographically addressed (those who know PCI are familiar with the concept.)
There are no jumpers or address switches to be set but on the other hand 
if the configuration is not done the cards are not visible in the normal 
windows.
This would give many nice possibilities but unfortunately the concept is 
poorly or not at all supported in vxWorks at least (one can of course 
customize the BSP to have a window to the configuration address space.)

For the EVG/EVR 200-series we implemented a 'hack' where in the 
eg/erConfigure the Tundra registers are saved, modified to give access 
to the config address space, the card is configured and finally the 
Tundra registers are restored to the original values. This is not the 
best method but at least it works. Except for the problem that Ge had: 
the mvme5100 BSP has a bug (or poor implementation) of sysBusToLocalAdrs
routine and the dev support needed another hack to circumvent this bug.

Would the CR/CSR concept be worth a short talk and a discussion in the
EPICS meeting?

best regards,

Timo


Dayle Kotturi wrote:
> Hi Ge,
>
> Three things I'd suggest (based on my experience with 100 series hardware):
>
> 1) make sure your EVG is properly "seated" in the crate. Even if LEDs are
> on, I've found that board can be incorrectly seated. This happened with
> 64x VME crates.
>
> 2) ensure the top rotary dial is set to '2' and the lower rotary dial is
> set to '0'
>
> 3) change your card number from '4' to '0' if you only have one EVG
>
> Step (3) may not be necessary to get it working.
> You need to get a '0' return code from EgConfigure before you can get
> any further.
>
> The same suggestions apply to EVR (rotaries at '1' and '8', change
> card to '0'). For EVR only, check that jumpers are set to '5' as
> is documented on the board itself.
>
> Dayle Kotturi
> LINAC Coherent Light Source
> Stanford Linear Accelerator Center
>
> On Tue, 20 Sep 2005, Lei Ge wrote:
>
>
> > Hello,
> >
> > I'm testing the event generator EVG200, but my IOC failed to probing the
> > event-generator board. Could somebody give me some suggestions? Thank you
> > very much.
> > ---------------------------------------------------------
> > EgConfigure(4,0x2000)
> > value = -1 = 0xffffffff = prsrv_cast_client + 0xff0f7b3f
> > ErConfigure(6,0x1800,164,5)
> > value = -1 = 0xffffffff = prsrv_cast_client + 0xff0f7b3f
> >
> > cd "/home21/home/leige/epicsApp/dbd"
> > value = 0 = 0x0
> > dbLoadDatabase("baseApp.dbd")
> > devApsEg: Failure probing for event generator... Card disabled
> > devApsEr: Failure probing for event receiver... Card disabled
> > value = 0 = 0x0
> > dbLoadDatabase("evgevr.dbd")
> > value = 0 = 0x0
> >
> > ----------------------------------------------------------------
> > Best wishes,
> >
> > Ge


--
Timo Korhonen  PSI (Paul Scherrer Institut)
               CH-5232 Villigen PSI
               tel + 41- 56 3103262  fax + 41 - 56 310 3383
e-mail:	       timo.korhonen@psi.ch