* [Xenomai-core] Function for writing to serial port through Xenomai API
@ 2009-11-09 9:29 Anisha Kaul
2009-11-09 10:37 ` Gilles Chanteperdrix
0 siblings, 1 reply; 3+ messages in thread
From: Anisha Kaul @ 2009-11-09 9:29 UTC (permalink / raw)
To: xenomai
Dear all,
I know that outb() being a linux system call can be used to write to the
serial/parallel ports. Currently I am working on a real time operating system
with Xenomai and a micro kernel. If I use outb() for port access, control
will shift to the soft-real time linux which I don't want. Is there any way I
can access ports using (Xenomai) functions rather than the linux system
calls ?
Thanking you in anticipation,
Anisha Kaul
-------------------------------------
Hi-Tech Gears Limited, Gurgaon, India
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Xenomai-core] Function for writing to serial port through Xenomai API
2009-11-09 9:29 [Xenomai-core] Function for writing to serial port through Xenomai API Anisha Kaul
@ 2009-11-09 10:37 ` Gilles Chanteperdrix
0 siblings, 0 replies; 3+ messages in thread
From: Gilles Chanteperdrix @ 2009-11-09 10:37 UTC (permalink / raw)
To: Anisha Kaul; +Cc: xenomai
Anisha Kaul wrote:
> Dear all,
Hi,
>
> I know that outb() being a linux system call can be used to write to the
> serial/parallel ports. Currently I am working on a real time operating system
> with Xenomai and a micro kernel. If I use outb() for port access, control
> will shift to the soft-real time linux which I don't want. Is there any way I
> can access ports using (Xenomai) functions rather than the linux system
> calls ?
Well, Xenomai has a real-time driver for the serial port, so, you could
use that. Other than that outb does not cause its caller to switch to
secondary mode if you have made the proper call to ioperm or iopl.
--
Gilles
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Xenomai-core] Function for writing to serial port through Xenomai API
@ 2009-11-09 11:44 Anisha Kaul
0 siblings, 0 replies; 3+ messages in thread
From: Anisha Kaul @ 2009-11-09 11:44 UTC (permalink / raw)
To: xenomai
Dear all,
Is there some way by which we can set a dead line for a real time task using
Xenomai or any other way ?
Thanking you in anticipation,
Anisha Kaul
-------------------------------------
Hi-Tech Gears Limited, Gurgaon, India
^ permalink raw reply [flat|nested] 3+ messages in thread
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2009-11-09 9:29 [Xenomai-core] Function for writing to serial port through Xenomai API Anisha Kaul
2009-11-09 10:37 ` Gilles Chanteperdrix
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2009-11-09 11:44 Anisha Kaul
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