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Re: accurate ms delay
- From: Jesper Skov <jskov at redhat dot com>
- To: Jani Monoses <jani at iv dot ro>
- Cc: eCos Discuss <ecos-discuss at sources dot redhat dot com>
- Date: 13 Mar 2002 08:07:28 +0100
- Subject: Re: [ECOS] accurate ms delay
- References: <Pine.LNX.4.33L2.0203081324100.15405-100000@cow>
On Fri, 2002-03-08 at 12:26, Jani Monoses wrote:
>
> Is it OK to use hal_delay_us in a generic .inl driver instead of the
> not-too-accurate for loops?
Yes, it's always a preference over for loops. Just be carefull to not
delay with the interrupts disabled.
>Is this function guarranteed to be implemented
> by every platform?
Yes - there is a fall-back implementation that is just a for-loop. So
accuracy is not guaranteed. But since RedBoot rely on the function, it's
available (and fairly accurate) on most platforms.
Jesper
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