Bonjour,
I'm starting using EPICS and I've written a simple SNL code to get
a 32 DOUT board (XVME220) flashing in sequence its different channels
(great stuff!)
I understand using a periodic scan might be more appropriate,
but I'm still a bit puzzled with what might go wrong here:
basically the whole IOC - after a seemingly random number of loop,
hangs and there's no other way but a nice clean reboot.
Before that all seems to work fine.
Your input would be greatly appreciated.
I use two (16 states) mbbo PV for my 32 outputs
both mbbo connect to the same hardware OUT
one mbbo sends values 0x1 0x2 0x4 ... 0x8000
the other 0x10000 .. 0x80000000
NB: I monitor these channels with the edd/dm 'byte' widget.
one for the 16 lower first states (works fine),
another for the 16 higher one (mask on bit 16 to 31)
-> the widget always shows bit 31 True (0x10000 looks like 0x8001____)
-> the widget shows 0x80000000 as 0xffff____
I attach the SNL source.
regards,
matthieu
--
Matthieu Bec Isaac Newton Group
phone: +34 22 425427 Apartado de Correos 321
fax : +34 22 425401 38780 Santa Cruz de La Palma
email: [email protected] Canary Islands, Spain
=============================================================
program hangtest
/*
* I use two (16 states) mbbo PV for my 32 outputs
*/
long hiout;
long lowout;
/*
* the currently selected output channel
*/
short rampId=0;
assign hiout to "small:hi_out";
assign lowout to "small:low_out";
ss flashramp {
state RUN {
when (delay(0.1)) {
/*
* flash ramp: selects dout channel 0 ->
31 sequentially
*/
rampId = (rampId+1) % 32;
if (rampId<16) {
lowout=rampId;
pvPut(lowout);
}
else {
hiout=rampId-16;
pvPut(hiout);
}
} state RUN
}
}
--
Matthieu Bec Isaac Newton Group
phone: +34 22 425427 Apartado de Correos 321
fax : +34 22 425401 38780 Santa Cruz de La Palma
email: [email protected] Canary Islands, Spain
- Navigate by Date:
- Prev:
Re: CA Server Steven M Beard
- Next:
RE: CA Server john sinclair
- Index:
1994
1995
1996
1997
<1998>
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
- Navigate by Thread:
- Prev:
Re: EPICS and WindRiver's Tornado Nick Rees
- Next:
Re: help ? SNL hangs, EDD/DM 'byte' widget bugs Ned Arnold
- Index:
1994
1995
1996
1997
<1998>
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
|