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 Post subject: 'screen' command in IRIX
Unread postPosted: Tue Sep 20, 2011 2:51 pm 
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Joined: Mon Jul 30, 2007 6:03 pm
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Hello,

I've recently cross-compiled the Atmel AVR Toolchain to IRIX and have been using my Octane2 for microcontroller development. One thing that I use a lot when debugging is RS232 Serial I/O and since IRIX doesn't have a built in terminal emulator I've been using the screen command from Nekoware with something like 'screen /dev/ttyd1 57600' . This mostly works but it seems there's an artificial delay when inputting/outputting characters to the console from the serial port. I don't see this issue when doing the same thing in OSX or Linux but IRIX seems to be buffering for 100-200ms before outputting. Does anyone know of way to force the tty to flush sooner? If not, have any good "minicom" type apps been ported to IRIX?

Thanks,

Mike Wolak


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Unread postPosted: Tue Sep 20, 2011 2:54 pm 
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Joined: Tue Jul 15, 2008 5:48 pm
Posts: 1887
Location: P.O. Box 121, Pymble, Sydney, NSW 2073, Australia.
Quote:
If not, have any good "minicom" type apps been ported to IRIX?

On the IRIX disksets is a uucp eoe with cu ("connect unix")... cu and uucp been around in UNIX since at least the 1980s if not 1970s.
In addition, kermit took me all of 3 minutes to build:
viewtopic.php?f=7&t=4348&p=7336104&hilit=kermit#p7336104

wiki:
http://www.nekochan.net/wiki/Serial


R.

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Unread postPosted: Tue Sep 20, 2011 5:15 pm 
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Joined: Mon Jul 30, 2007 6:03 pm
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Thanks for the response PymbleSoftware. I was trying to avoid using 'cu' due to it not being installed on the box and having a hard time finding it on the 6.5 discs I have. I did get Kermit working nicely and to do so without UUCP installed you must supply "-DNOUUCP" to the compiler flags options in the irix65 portion of the Makefile.

Kermit did not exhibit the same input/output lag and had no issue making a direct 57600 baud serial connection to my device. One last note, to have Kermit auto-connect on a specific tty and baud rate you can create a ".kermrc" file in your home directory with the following contents:

SET LINE /dev/ttyd1
SET SPEED 57600
SET CARRIER-WATCH OFF
connect

The above assumes you want to use Serial Port 1 and a buad rate of 57600.

Thanks!

Mike Wolak


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Unread postPosted: Tue Sep 20, 2011 6:03 pm 
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Joined: Mon Jun 06, 2005 9:53 pm
Posts: 2939
Location: USA
mikewolak wrote:
I was trying to avoid using 'cu' due to it not being installed on the box and having a hard time finding it on the 6.5 discs I have.

Foundation 1 disk --> IRIX Execution Environment --> UUCP Utilities (eoe.sw.uucp)
See also viewtopic.php?f=7&t=17598&view=next


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