Hi all,
I have a video streaming device running Linux. when i change the baud rate using the 'stty' command,it changes temporarily for few seconds. Then again it changes to 115200 automatically.
Please find below the /etc/inittab file & the /etc/init.d/rcS file for reference.
inittab: ######
# /etc/inittab: init(8) configuration. # $Id: inittab,v 1.91 2002/01/25 13:35:21 miquels Exp $
# The default runlevel. id:3:initdefault:
# Boot-time system configuration/initialization script. # This is run first except when booting in emergency (-b) mode. si::sysinit:/etc/init.d/rcS
# What to do in single-user mode. ~~:S:wait:/sbin/sulogin
# /etc/init.d executes the S and K scripts upon change # of runlevel. # # Runlevel 0 is halt. # Runlevel 1 is single-user. # Runlevels 2-5 are multi-user. # Runlevel 6 is reboot.
l0:0:wait:/etc/init.d/rc 0 l1:1:wait:/etc/init.d/rc 1 l2:2:wait:/etc/init.d/rc 2 l3:3:wait:/etc/init.d/rc 3 l4:4:wait:/etc/init.d/rc 4 l5:5:wait:/etc/init.d/rc 5 l6:6:wait:/etc/init.d/rc 6 # Normally not reached, but fallthrough in case of emergency. z6:6:respawn:/sbin/sulogin
# What to do when CTRL-ALT-DEL is pressed. ca:12345:ctrlaltdel:/sbin/shutdown -t1 -a -r now
# Action on special keypress (ALT-UpArrow). #kb::kbrequest:/bin/echo "Keyboard Request--edit /etc/inittab to let this work."
# What to do when the power fails/returns. pf::powerwait:/etc/init.d/powerfail start pn::powerfailnow:/etc/init.d/powerfail now po::powerokwait:/etc/init.d/powerfail stop
# This line provides a nice out-of-box experience. For regular use, you # should replace it with the proper getty lines below. con:2345:respawn:/sbin/getty console #ttyS1::respawn:-/bin/sh
# /sbin/getty invocations for the runlevels. # # # The "id" field MUST be the same as the last # characters of the device (after "tty"). # # Format: # ::: # # Uncomment these for a devfs system # #1:2345:respawn:/sbin/getty 38400 vc/1 #2:23:respawn:/sbin/getty 38400 vc/2 #3:23:respawn:/sbin/getty 38400 vc/3 #4:23:respawn:/sbin/getty 38400 vc/4 #5:23:respawn:/sbin/getty 38400 vc/5 #6:23:respawn:/sbin/getty 38400 vc/6 # # Uncomment these only for non-devfs systems # #1:2345:respawn:/sbin/getty 38400 tty1 #2:23:respawn:/sbin/getty 38400 tty2 #3:23:respawn:/sbin/getty 38400 tty3 #4:23:respawn:/sbin/getty 38400 tty4 #5:23:respawn:/sbin/getty 38400 tty5 #6:23:respawn:/sbin/getty 38400 tty6
# Example how to put a getty on a serial line (for a terminal) # # Uncomment these for a devfs system # #T0:23:respawn:/sbin/getty -L tts/0 9600 vt100 #T1:23:respawn:/sbin/getty -L tts/1 9600 vt100 # # Uncomment these only for non-devfs systems # #T0:23:respawn:/sbin/getty -L ttyS0 9600 vt100 #T1:23:respawn:/sbin/getty -L ttyS1 9600 vt100
# Example how to put a getty on a modem line. # # Uncomment this for a devfs system # #T3:23:respawn:/sbin/mgetty -x0 -s 57600 tts/3 # # Uncomment these only for non-devfs systems # #T3:23:respawn:/sbin/mgetty -x0 -s 57600 ttyS3
rcS ####
#! /bin/sh # # rcS Call all S??* scripts in /etc/rcS.d in # numerical/alphabetical order. # # Version: @(#)/etc/init.d/rcS 2.76 19-Apr-1999 snipped-for-privacy@cistron.nl #
PATH=/sbin:/bin:/usr/sbin:/usr/bin runlevel=S prevlevel=N umask 022 export PATH runlevel prevlevel
# # See if system needs to be setup. This is ONLY meant to # be used for the initial setup after a fresh installation! # if [ -x /sbin/unconfigured.sh ] then /sbin/unconfigured.sh fi
# # Source defaults. # . /etc/default/rcS export VERBOSE
# # Trap CTRL-C &c only in this shell so we can interrupt subprocesses. # trap ":" INT QUIT TSTP
# # Call all parts in order. # for i in /etc/rc.d/rcS.d/S??* do # Ignore dangling symlinks for now. [ ! -f "$i" ] && continue
case "$i" in *.sh) # Source shell script for speed. ( trap - INT QUIT TSTP set start . $i ) ;; *) # No sh extension, so fork subprocess. $i start ;; esac done
# Run /etc/rc.d/rc.local if it exists [ -x /etc/rc.d/rc.local ] && /etc/rc.d/rc.local
# # Finish setup if needed. The comment above about # /sbin/unconfigured.sh applies here as well! # if [ -x /sbin/setup.sh ] then /sbin/setup.sh fi
DVEVMDIR=/opt/ipnc
ifconfig lo 127.0.0.1
# Load the dsplink and cmem kernel modules cd $DVEVMDIR $DVEVMDIR/loadmodules_ipnc.sh
# Start the demo application cd $DVEVMDIR $DVEVMDIR/autorun.sh