Experimental Physics and
Industrial Control System

Matt,

Could you try the attached patch for Base?  It adds an iocsh function zoneset().  For US eastern time I can use 'zoneset("EST5EDT")' and see the change reflected in generalTimeReport().

Michael


On 04/25/2016 07:13 PM, Matt Rippa wrote:

Turns out access to NVRAM variables like epics-tz only work with MOTLOAD firmware (mvme-6100).

On the PPC1-BUG firmware (mvme-2700) there isn't an obvious way.

For now, I'll have to define this in base/configure/CONFIG_SITE_ENV for each of our sites Hawaii and Chile.

For Chile, this is a terrible situation. They can't make up their mind about standard time. They will be starting daylight saving time in May.

So it looks like we'll have to rebuild EPICS Base each time their clocks change? Or choose a different BSP?

Can anyone confirm that the "epics-tz" variable is the preferred solution for the mvme-6100 (beatnik) BSP?

Thank you all for input!

-Matt

On Mon, Apr 25, 2016 at 12:45 PM, Matt Rippa <[email protected]> wrote:

Thanks. I just looked into this and src/RTEMS/base/setBootConfigFromNVRAM.c

Looks like the epics-tz variable is what I want.

-Matt

On Mon, Apr 25, 2016 at 12:36 PM, Michael Davidsaver <[email protected]> wrote:

On 04/25/2016 05:12 PM, Matt Rippa wrote:
> epicsEnvSet("TZ", "HST10")

You'll need to arrange a call to tzset() before anything happens.

http://man7.org/linux/man-pages/man3/tzset.3.html

Init() does this, but has probably already run.  As I look at it, there
doesn't seem to be a good way to set TZ for the standard rtems app...

http://bazaar.launchpad.net/~epics-core/epics-base/3.16/view/head:/src/libCom/RTEMS/rtems_init.c#L631