[ECOS] Is it possible to read and write from two different threads via the same fopen("/dev/ser0"...) handle ???

[ECOS] Is it possible to read and write from two different threads via the same fopen("/dev/ser0"...) handle ???

[oliver munz @ s p e a g]

I want to read and write the same serial port from a reading thread and 
from am other writeing thread. Should do this work?

I can do this via the cyg_io_read(...) and cyg_io_write(...) functions, 
but the file-version dosn't worked... But may be i did it wrong...

Oliver

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[ECOS] Re: Is it possible to read and write from two different threads via the same fopen("/dev/ser0"...) handle ???

[Grant Edwards]

In gmane.os.ecos.general, you wrote:

> I want to read and write the same serial port from a reading
> thread and from am other writeing thread. Should do this work?

Yes, that should work.

> I can do this via the cyg_io_read(...) and cyg_io_write(...)
> functions,

Same here. I've always used the cyg_io_xxxx() functions to
access serial ports, and never had any problems with
"simultaneous" read/write operations from different threads.

> but the file-version dosn't worked...

I would expect that to work as well, but I've never tried it.

> But may be i did it wrong...

Maybe.

-- 
Grant Edwards                   grante             Yow!  I was in a HOT
                                  at               TUB! I was NORMAL! I was
                               visi.com            ITALIAN!! I enjoyed th'
                                                   EARTHQUAKE!

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