[ECOS] RE: question about redirecting serial output to a buffer

["Kramer, Mat" <MKramer at TransomaMedical dot com>]

Tracy,

We did some investigation into this, but never completed it.  Here are
my assorted notes:

See these links:

http://sourceware.org/ml/ecos-discuss/2004-09/msg00029.html

http://lists.trolltech.com/qt-interest/2004-05/thread00259-0.html

http://sourceware.org/ml/ecos-discuss/2003-04/msg00283.html

The dup2/pipe method looks the most promising, but  pipe is not defined
in our eCos configuration, not sure how to get it.

We were able to redirect stderr permanently through eCos configuration,
as follows:

CYGDAT_IO_SERIAL_TTY_CONSOLE 
original: /dev/ttydiag
new: /dev/tty1
CYGPKG_IO_SERIAL_TTY_TTY0
original: 0
new: 1
CYGPKG_IO_SERIAL_TTY_TTY0_DEV
original: default
new: /dev/ser0
CYGPKG_IO_SERIAL_TTY_TTY1
original: 0
new: 1
CYGPKG_IO_SERIAL_TTY_TTY1_DEV
original: default
new: /dev/ser1
CYGPKG_IO_SERIAL_TERMIOS_TERMIOS0_DEV
original: /dev/ser0
new: /dev/ser1
CYGDAT_LIBC_STDIO_DEFAULT_CONSOLE
original: /dev/ttydiag
new: /dev/tty1


If we want to redirect stderr to tty:

dup2(serfd, STDERR_FILENO);

fdopen(STDERR_FILENO, "a");

fprintf(stderr, "Now stderr redirected to tty...\r");


I hope this helps


-Mat


-----Original Message-----
From: Jones, Tracy [mailto:TJones@opnext.com] 
Sent: Thursday, February 19, 2009 9:44 PM
To: ecos-discuss@ecos.sourceware.org
Subject: RE: question about redirecting serial output to a buffer

Hi - I have successfully redirected console output to my own routines by
using diag_init_putc.  I was wondering if there is a similar thing for
the serial output (i.e. STDOUT and STDERR output).  I am trying to
capture the output of the serial port into a buffer and ship it out to
an external system.  Thanks

Tracy



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