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Date: Wed, 11 Apr 2012 16:19:31 +0200
From: Wolfgang Grandegger <wg@domain.hid>
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Subject: Re: [Xenomai-help] Cross-link.c ---RTSER_RTIOC_WAIT_EVENT
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To: Minh GIANG <giang.hminh@domain.hid>
Cc: xenomai-help <xenomai@xenomai.org>

Hi,

On 04/05/2012 02:46 PM, Minh GIANG wrote:
> i'm sorry sir, what i displayed just in the last mail, isn't good, because
> i removed rt_dev_ioctl(...) in cross-link program
> And then, with  rt_dev_ioctl( RTSER_RTIOC_WAIT_EVENT ).
> 
> [93076.465077] base=0x2f8 iir=0x4
> [93076.465082] base=0x2f8 status=0x0
> [93076.465084] base=0x2f8 iir=0x1

TX on rtser0:

> [93076.556794] base=0x3f8 iir=0x2
> [93076.556799] base=0x3f8 status=0x0
> [93076.556801] base=0x3f8 iir=0x1

RX of 8 chars on rtser1:

> [93076.557819] base=0x2f8 iir=0x4
> [93076.557823] base=0x2f8 status=0x0
> [93076.557825] base=0x2f8 iir=0x1

> [93076.558860] base=0x2f8 iir=0x4
> [93076.558865] base=0x2f8 status=0x0
> [93076.558867] base=0x2f8 iir=0x1

> [93076.559898] base=0x2f8 iir=0x4
> [93076.559901] base=0x2f8 status=0x0
> [93076.559903] base=0x2f8 iir=0x1

> [93076.560943] base=0x2f8 iir=0x4
> [93076.560946] base=0x2f8 status=0x0
> [93076.560948] base=0x2f8 iir=0x1

> [93076.561969] base=0x2f8 iir=0x4
> [93076.561971] base=0x2f8 status=0x0
> [93076.561973] base=0x2f8 iir=0x1

> [93076.563006] base=0x2f8 iir=0x4
> [93076.563009] base=0x2f8 status=0x0
> [93076.563011] base=0x2f8 iir=0x1

> [93076.564012] base=0x2f8 iir=0x4
> [93076.564012] base=0x2f8 status=0x0
> [93076.564012] base=0x2f8 iir=0x1

> [93076.564012] base=0x2f8 iir=0x4
> [93076.564012] base=0x2f8 status=0x0
> [93076.564012] base=0x2f8 iir=0x1

TX on rtser0:

> [93076.656766] base=0x3f8 iir=0x2
> [93076.656770] base=0x3f8 status=0x0
> [93076.656772] base=0x3f8 iir=0x1

RX on rtser1:

> [93076.657793] base=0x2f8 iir=0x4
> [93076.657795] base=0x2f8 status=0x0
> [93076.657797] base=0x2f8 iir=0x1

... and so on.

This looks completely normal and I'm really puzzled why the
rt_dev_ioctl(RTSER_RTIOC_WAIT_EVENT) does not work as expected. Ah, I
just realized that the following patch was not yet applied:

https://mail.gna.org/public/xenomai-core/2011-11/msg00009.html

I think it will fix your problem.

Wolfgang.