cygwin error device or resource busy Post: 302354593

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Special Forums UNIX Desktop Questions & Answers cygwin error device or resource busy Post 302354593 by Corona688 on Friday 18th of September 2009 06:00:24 PM

09-18-2009

Registered User

Hm.

For one thing, you're not reading anything, how can you even tell if the device answers? It might be waiting for data to get read from it before it'll do anything else.

For another thing, maybe it needs carriage returns, which UNIX usually doesn't provide or use. You can force echo to produce them of course...

Code:

# Open ttyS2 for reading and writing as FD 5
exec 5<>/dev/ttyS2
# Leave this running in the background
cat <&5 &
# Write a command to FD 5
echo -en "AT\r\n" >&5
sleep 3
echo -en "AT+CMGF=1\r\n" >&5
sleep 3
echo -en "AT+CMGS=\"333xxxxxxx\"\r\n" >&5
sleep 3
# Is this supposed to have a carriage return + linefeed?  Not sure.
echo -en "ciao\x1a\r\n" >&5

It'd be good to know if the serial device is producing any response at all, working or not... Does it print anything when you type in the AT command in PuTTY? I'd start with that, just get that working, and add other bits once I know I have that.

Last edited by Corona688; 09-18-2009 at 07:05 PM..

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bluetooth-sendto

BLUETOOTH-SENDTO(1)						Linux User's Manual					       BLUETOOTH-SENDTO(1)

NAME

       bluetooth-sendto - GTK application for transfering files over Bluetooth

SYNOPSIS

       bluetooth-sendto [--device=XX:XX:XX:XX:XX:XX] [file] [file...]

DESCRIPTION

       bluetooth-sendto  will  display	a  dialog  for	transfering  files  over Bluetooth.  bluetooth-sendto is part of gnome-bluetooth, see also
       http://live.gnome.org/GnomeBluetooth

OPTIONS

       --device
	      Define the device address to send the file to

       file   The file(s) to send to the device

AUTHOR

       Marcel Holtmann <marcel@holtmann.org>

LICENSE

       bluetooth-sendto is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as  published
       by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

       This program is distributed in the hope that it will be useful but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABIL-
       ITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

       You should have received a copy of the GNU General Public License along with this program; if not, write to the Free  Software  Foundation,
       Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

gnome-bluetooth 						    Oct 4, 2006 					       BLUETOOTH-SENDTO(1)