Experimental Physics and
Industrial Control System

"Peregrine M. McGehee" <[email protected]> · Mon, 06 Mar 2000 08:02:20 -0700

Marty, 

I don't believe anything I am loading is calling rebootHookAdd although
upgrading drivers is probably a good thing. The IOC in question is
actualy running a combination of EPICS and code from the original FNAL
development effort here at the SDSS. Looks like the driver I am calling
originates from the Svedberg Accelerator Facility in Upsalla, circa
1994.

Marty Kraimer wrote:
> I suspect the following:
> 
> 1) You are calling rebootHookAdd
> 2) Your reboot hookroutine turns off interrupts but does not do anything to stop
> new write requests directed to ipOctalSerial
> 3) Something else also is using rebootHookAdd and it's reboot hook routine does
> something like taskdelay.
> 4) A new write request is directed to the ipOctal and started.
> 5) The taskdelay completes and the reboot occurs. But that ipOctal comes up with
> transmit enabled.
> 
> As I recall you started with the Hideos driver for ipOctalSerial. So did MPF. In
> MPF we found this problem. You may want to compare your version against the
> latest MPF version, which can be obtained from:
> 
> http://www.aps.anl.gov/asd/people/mrk/epics/modules/serial/mpfSerial/
> 
> At the very least you can look at the code for handling soft reboots.
> 
> Marty Kraimer

Thanks,
	Peregrine
-- 
Peregrine M. McGehee, LANL Telescope Engineering, Sloan Digital Sky
Survey
(505) 667-3273, MS H820, Los Alamos National Laboratory, Los Alamos, NM
87545

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System