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Re: [lwip-users] Binary/counting semaphores and lwIP

From: Magnus S
Subject: Re: [lwip-users] Binary/counting semaphores and lwIP
Date: Fri, 21 Oct 2011 12:32:55 +0200

Ok Simon,
thanks for the answer, now I know the wiki is up-to-date.


2011/10/21 Simon Goldschmidt <address@hidden>
Magnus S <address@hidden> wrote:
> Are there any benefits from using counting semaphores instead of binary
> semaphores for lwIP?


> Is it at all possible to use binary semaphores with lwIP?


> According to this wiki-page it seems as the choice does not matter, but
> are
> there any other considerations that should be taken into account?
> http://lwip.wikia.com/wiki/Porting_for_an_OS

And it seems the wiki is correct there.

> In my case the system is using AVR32 with FreeRTOS.
> In the default setting of the Atmel example applications, binary
> semaphores
> are used. Could that cause any issues?


When using counting semaphores, lwIP will only count them to 1, so there's no real use for that.

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