[ECOS] forwarded message from dai hongbo

Jesper Skov jskov@cambridge.redhat.com
Wed Jul 4 23:01:00 GMT 2001


To : Jesper Skov <jskov at cambridge dot redhat dot com>
Subject : Re:Re: [ECOS] how to do nanosecond delay in ecos?
>From : "dai hongbo" <dai_ecos at 263 dot net>
Date : Thu, 5 Jul 2001 08:37:18 +0800 (CST)

  maybe i'm wrong,how about usecond?that is needed for a device driver?

>>>>>> "dai" == dai hongbo <dai_ecos@263.net> writes:
>
>dai>  is there a way to do precise delay of nanosecond?
>
>No. The finest resolution is micro seconds, which can achieved by
>useing the CYGACC_CALL_IF_DELAY_US macro.
>
>FWIW I don't believe there's any _embedded_ CPU that's actually
>capable of executing a whole instruction in a nanosecond. Yet.
>
>Jesper

_____________________________________________
[×ã²»³ö»§ ÇáËÉÉÏÍø] ÉÏÍø×¨Óúţº95963£¬Óû§Ãû/ÃÜÂ룺263
»¯×±Æ·ÏÄÈÕÌØ»Ý£¬½µ¼Û¿ñ³±£¡  http://shopping.263.net/category04.htm



More information about the Ecos-discuss mailing list