From: "Daniel Lidsten" <Daniel.Lidsten@combitechsystems.com>
To: "eCos Discussion" <ecos-discuss@sources.redhat.com>
Subject: [ECOS] Change system tick during runtime
Date: Wed, 01 Oct 2003 12:55:00 -0000 [thread overview]
Message-ID: <004B1D7A5257174C9044A1B7BD0E60EDDAE739@ratatosk.combitechsystems.com> (raw)
Hi,
Is there any way of changing the system tick during runtime? I have made
a quick test by letting an application provided variable be used when
setting the decrementer in the HAL_CLOCK_*-functions. This will make the
system generate tick more or less often depending on the value set.
However, the drawback is that the system expects that we have a
heartbeat of 100Hz and that will differ when changing the decrementer.
Is there any way to get around this? Is there any way to change the
CYGNUM_HAL_RTC_DENOMINATOR during runtime so that the change will affect
every file that use it? I want to be able to have 10000 ticks per second
but then i also need to let the system know that we have 10000 ticks per
seconds so that not all timeouts and stuff gets all confused.
Regards, Daniel Lidsten
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next reply other threads:[~2003-10-01 12:55 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-01 12:55 Daniel Lidsten [this message]
2003-10-01 12:59 ` Slawek
2003-10-01 13:03 ` Gary Thomas
2004-01-28 8:53 ` [ECOS] Changing CPU clock frequency on the fly Gratian Crisan
2004-01-28 15:58 ` Bart Veer
2003-10-01 13:16 [ECOS] Change system tick during runtime Daniel Lidsten
2003-10-01 13:31 ` Gary Thomas
2003-10-01 17:06 ` Nick Garnett
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