[ECOS] Re: Waiting I/O operation

Uwe Kindler uwe_kindler@web.de
Sat Jul 21 13:21:00 GMT 2007


This is what the documentation says about flags and DSRs:

http://ecos.sourceware.org/docs-latest/ref/kernel-flags.html

So it seems to be possible to use cyg_flag_setbits() from DSRs.

Andrew Lunn schrieb:
>> But, one my today DSR uses the cyg_flag_setbits() notifier and that
>> works as I could expect. I found that is more simple, because that
>> doesn't need itself in a mutex. I wonder about the right hacking from
>> the eCos experts.
> 
> You are not allowed to block in a DSR. So look through the
> cyg_flag_setbits() code and see if it calls any functions to block
> itself. 
> 
>         Andrew

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