From: "hangtoo" <hangtoo@163.com>
To: "li yang-r58472" <leoli@freescale.com>
Cc: linuxppc-embedded@ozlabs.org
Subject: Re: RE: delay programming
Date: Thu, 25 May 2006 15:10:17 +0800 (CST) [thread overview]
Message-ID: <44755859.0000CD.04146@bj163app85.163.com> (raw)
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hi,
yes,you are right.the usleep didn't give out accurate delay.so I make a delay funtion to fix it.
thank you for you help.:)
regards
tony
That depends on how accurate you want. Sleep() functions can't be too accurate
for Linux schedule characteristic. To get best accuracy, you can use hardware
timer. udelay() is a choice which reduces the overall system performance.
Best Regards,
Leo
> -----Original Message-----
> From: linuxppc-embedded-bounces+leoli=freescale.com@ozlabs.org
> [mailto:linuxppc-embedded-bounces+leoli=freescale.com@ozlabs.org] On Behalf
> Of tony
> Sent: Wednesday, May 24, 2006 5:24 PM
> To: linuxppc-embedded@ozlabs.org
> Subject: delay programming
>
>
> hi all
> I want to delay 1ms in the program,
> does usleep(1000) works accurate?
> any good idea?
>
> regards
> tony
>
>
> _______________________________________________
> Linuxppc-embedded mailing list
> Linuxppc-embedded@ozlabs.org
> https://ozlabs.org/mailman/listinfo/linuxppc-embedded
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