Re: EPICS_TIMEZONE and TZ on RTEMS

[Matt Rippa <mrippa@gemini.edu>]

Hi Lewis,

> #Hawaii is standard time and never moves their clocks

> epicsEnvSet("EPICS_TIMEZONE", "HST::600:0:0")

It does appear to be a valid way to set timezones with a standard time. With any dates defined I'm one hour off.

Changing TIMEZONE in base/configure/CONFIG_SITE_ENV to "HST::600:0:0" works for me.

My real trouble is attempting to change this at boot time.

-Matt

On Mon, Apr 25, 2016 at 12:28 PM, J. Lewis Muir <jlmuir@imca-cat.org> wrote:

On 4/25/16 4:12 PM, Matt Rippa wrote:
> Hello,
>
> On EPICS 3.14.12.4 and RTEMS 4.10.2 I can't seem to control the
> timezone at runtime.
> My BSP is the mvme2700.
>
>
> EPICS base is build with
> base/configure/CONFIG_SITE_ENV:EPICS_TIMEZONE=CUS::360:031302:110602
>
> An oversight, but I was thinking it didn't matter and I could just
> change things in my startup script. I tried to re-define this in my
> startup script before iocInit() as follows:
>
> #Hawaii is standard time and never moves their clocks
> epicsEnvSet("EPICS_TIMEZONE", "HST::600:0:0")

Hello, Matt.

I don't think that's a valid value: the last two parts are supposed to
be "mmddhh", but you've just got a single digit ('0') for each.

> Then I found the link below so I tried
>
> epicsEnvSet("TZ", "HST10")
>
> In both cases, my timezone persisted with Central US time, UTC-5
> hours.

On VxWorks, I set the "TIMEZONE" environment variable instead of
"EPICS_TIMEZONE".  I suspect there's a reason for that, but I don't
remember what it is, and I don't know if the same applies to RTEMS.

> My latest AppDevGuide (Oct. 5th, 2015) does not describe it.  Is this
> documented anywhere else?

The documentation I've been using is the comment for EPICS_TIMEZONE in
configure/CONFIG_SITE_ENV.

Regards,

Lewis