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#!/bin/bash
#
# pwmconfig
# Tests the pwm outputs of sensors and configures fancontrol
# Supported Linux kernel versions: 2.6.5 and later
#
# Warning!!! This program will stop your fans, one at a time,
# for approximately 5 seconds each!!!
# This may cause your processor temperature to rise!!!
# Verify that all fans are running at normal speed after this
# program has exited!!!
#
# Copyright (C) 2007-2009 Jean Delvare <khali@linux-fr.org>
#
# This program 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
# MERCHANTABILITY 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., 51 Franklin Street, Fifth Floor, Boston,
# MA 02110-1301 USA.
#
#
REVISION=$(echo '$Revision: 5630 $' | cut -d' ' -f2)
REVDATE=$(echo '$Date: 2009-01-29 09:28:17 +0100 (jeu. 29 janv. 2009) $' | cut -d' ' -f2)
PIDFILE="/var/run/fancontrol.pid"
if [ -f "$PIDFILE" ]
then
echo "File $PIDFILE exists. This typically means that the"
echo "fancontrol deamon is running. You should stop it before running pwmconfig."
echo "If you are certain that fancontrol is not running, then you can delete"
echo "$PIDFILE manually."
exit 1
fi
echo "# pwmconfig revision $REVISION ($REVDATE)"
echo 'This program will search your sensors for pulse width modulation (pwm)'
echo 'controls, and test each one to see if it controls a fan on'
echo 'your motherboard. Note that many motherboards do not have pwm'
echo 'circuitry installed, even if your sensor chip supports pwm.'
echo
echo 'We will attempt to briefly stop each fan using the pwm controls.'
echo 'The program will attempt to restore each fan to full speed'
echo 'after testing. However, it is ** very important ** that you'
echo 'physically verify that the fans have been to full speed'
echo 'after the program has completed.'
echo
DELAY=5 # 3 seconds delay is too short for large fans, thus I increased it to 5
MAX=255
if [ -d "/sys/class/hwmon" ]
then
SYSFS=2
DIR="/sys/class/hwmon"
PREFIX='hwmon*'
elif [ -d "/sys/bus/i2c/devices" ]
then
SYSFS=1
DIR="/sys/bus/i2c/devices"
PREFIX='*-*'
else
echo $0: 'No sensors found! (modprobe sensor modules?)'
exit 1
fi
cd $DIR
DEVICES=`echo $PREFIX`
if [ "$PREFIX" = "$DEVICES" ]
then
echo $0: 'No sensors found! (modprobe sensor modules?)'
exit 1
fi
# We may need to adjust the device path
if [ "$SYSFS" = "2" ]
then
OLD_DEVICES="$DEVICES"
DEVICES=""
for device in $OLD_DEVICES
do
if [ ! -r "$device/name" ]
then
device="$device/device"
fi
DEVICES="$DEVICES $device"
done
fi
for device in $DEVICES
do
# Find available fan control outputs
MATCH=$device/'pwm[1-9]'
device_pwm=`echo $MATCH`
if [ "$SYSFS" = "1" -a "$MATCH" = "$device_pwm" ]
then
# Deprecated naming scheme (used in kernels 2.6.5 to 2.6.9)
MATCH=$device/'fan[1-9]_pwm'
device_pwm=`echo $MATCH`
fi
if [ "$MATCH" != "$device_pwm" ]
then
PWM="$PWM $device_pwm"
fi
# Find available fan monitoring inputs
MATCH=$device/'fan[1-9]_input'
device_fan=`echo $MATCH`
if [ "$MATCH" != "$device_fan" ]
then
FAN="$FAN $device_fan"
fi
done
if [ -z "$PWM" ]
then
echo $0: 'There are no pwm-capable sensor modules installed'
exit 1
fi
if [ -z "$FAN" ]
then
echo $0: 'There are no fan-capable sensor modules installed'
exit 1
fi
# $1 = padding
function print_devices()
{
local name
for device in $DEVICES
do
name=`cat $device/name 2> /dev/null`
[ -z "$name" ] && name="unknown (no name attribute)"
echo "$1$device is $name"
done
}
# $1 = pwm file name
function is_pwm_auto()
{
ENABLE=${1}_enable
if [ -f $ENABLE ]
then
if [ "`cat $ENABLE`" -gt 1 ]
then
return 0
fi
fi
return 1
}
# $1 = pwm file name
function pwmdisable()
{
ENABLE=${1}_enable
# No enable file? Just set to max
if [ ! -f $ENABLE ]
then
echo $MAX > $1
return 0
fi
# Try pwmN_enable=0
echo 0 2>/dev/null > $ENABLE
if [ "`cat $ENABLE`" -eq 0 ]
then
# Success
return 0
fi
# It didn't work, try pwmN_enable=1 pwmN=255
echo 1 2>/dev/null > $ENABLE
if [ "`cat $ENABLE`" -ne 1 ]
then
echo "$ENABLE stuck to `cat $ENABLE`" >&2
return 1
fi
echo $MAX > $1
if [ "`cat $1`" -ge 190 ]
then
# Success
return 0
fi
# Nothing worked
echo "$1 stuck to `cat $1`" >&2
return 1
}
# $1 = pwm file name
function pwmenable()
{
ENABLE=${1}_enable
if [ -w $ENABLE ]
then
echo 1 2>/dev/null > $ENABLE
if [ $? -ne 0 ]
then
return 1
fi
fi
echo $MAX > $1
}
# $1 = pwm file name; $2 = pwm value 0-255
function pwmset()
{
echo $2 > $1
}
echo 'Found the following devices:'
print_devices " "
echo
echo 'Found the following PWM controls:'
for i in $PWM
do
echo " $i"
if [ -w $i ]
then
# First check if PWM output is in automatic mode
if is_pwm_auto $i
then
echo "$i is currently setup for automatic speed control."
echo 'In general, automatic mode is preferred over manual mode, as'
echo 'it is more efficient and it reacts faster. Are you sure that'
echo -n 'you want to setup this output for manual control? (n) '
read X
if [ "$X" = "" -o "$X" != "y" -a "$X" != "Y" ]
then
continue
fi
fi
pwmdisable $i
if [ $? -ne 0 ]
then
echo "Manual control mode not supported, skipping $i."
elif [ "$GOODPWM" = "" ]
then
GOODPWM=$i
else
GOODPWM="$GOODPWM $i"
fi
else
NOTROOT=1
fi
done
if [ "$GOODPWM" = "" ]
then
echo 'There are no usable PWM outputs.'
exit 1
fi
echo
echo "Giving the fans some time to reach full speed..."
sleep $DELAY
echo 'Found the following fan sensors:'
for i in $FAN
do
# this will return the first field if there's only one (sysfs)
S=`cat $i | cut -d' ' -f2`
if [ "$S" = "0" -o "$S" = "-1" ]
then
echo " $i current speed: 0 ... skipping!"
else
echo " $i current speed: $S RPM"
if [ "$GOODFAN" = "" ]
then
GOODFAN=$i
SPEEDS=$S
else
GOODFAN="$GOODFAN $i"
SPEEDS="$SPEEDS $S"
fi
fi
done
echo
if [ "$GOODFAN" = "" ]
then
echo 'There are no working fan sensors, all readings are 0.'
echo 'Make sure you have a 3-wire fan connected.'
echo 'You may also need to increase the fan divisors.'
echo 'See doc/fan-divisors for more information.'
exit 1
fi
if [ "$NOTROOT" = "1" ]
then
echo 'As you are not root, we cannot write the PWM settings.'
echo 'Please run as root to continue.'
exit 1
fi
echo 'Warning!!! This program will stop your fans, one at a time,'
echo "for approximately $DELAY seconds each!!!"
echo 'This may cause your processor temperature to rise!!!'
echo 'If you do not want to do this hit control-C now!!!'
echo -n 'Hit return to continue: '
read X
echo
PLOTTER=gnuplot
STEP=15
PDELAY=2
# Use a smaller step for low PWM values as this is typically where the
# more important fan speed changes are happening.
STEP2=2
STEP2_BELOW=31
function pwmdetail()
{
P=$1
F=$2
PLOT=
type $PLOTTER > /dev/null 2>&1
if [ $? -eq 0 ]
then
echo -n "Would you like to generate a graphical plot using $PLOTTER (y)? "
read X
if [ "$X" = "y" -o "$X" = "Y" -o "$X" = "" ]
then
PLOT=y
fi
else
if [ -n "$DISPLAY" ]
then
echo "Note: If you had $PLOTTER installed, I could generate a graphical plot."
fi
fi
if [ "$PLOT" = "y" ]
then
TMP1=`mktemp -t pwmtest1.XXXXXXXXXX` || { echo "$0: Cannot create temporary file" >&2; exit 1; }
TMP2=`mktemp -t pwmtest2.XXXXXXXXXX` || { rm -f $TMP1 ; echo "$0: Cannot create temporary file" >&2; exit 1; }
echo "set xlabel \"PWM: $P\"" > $TMP1
echo "set ylabel \"FAN: $F (RPM)\"" >> $TMP1
echo 'set nokey' >> $TMP1
echo 'set xrange [0:255]' >> $TMP1
echo "plot \"$TMP2\" with lines" >> $TMP1
echo 'pause -1 " Hit return to continue..."' >> $TMP1
> $TMP2
fi
local threshold=100000
let pwm=$MAX
pwmenable $P
while [ $pwm -ge 0 ]
do
pwmset $P $pwm
sleep $PDELAY
if [ $? -ne 0 ]
then
pwmdisable $P
echo '^C received, aborting...'
rm -f $TMP1 $TMP2
exit 1
fi
# this will return the first field if there's only one (sysfs)
S=`cat $F | cut -d' ' -f2`
# Fan speed should never increase significantly
if [ $S -gt $threshold ]
then
echo " PWM $pwm FAN $S (probably incorrect)"
else
echo " PWM $pwm FAN $S"
let threshold=S*6/5
fi
if [ "$PLOT" = "y" ]
then
echo "$pwm $S" >> $TMP2
fi
if [ "$S" = "0" -o "$S" = "-1" ]
then
pwmdisable $P
echo " Fan Stopped at PWM = $pwm"
if [ $pwm -eq $MAX ]
then
echo " This fan appears to stop when the PWM is enabled;"
echo " perhaps the fan input shares a pin with the PWM output"
echo " on the sensor chip."
echo " You cannot control this fan with this PWM output."
rm -f $TMP1 $TMP2
echo
return 0
fi
break
fi
if [ $pwm -lt $STEP2_BELOW ]
then
let pwm=$pwm-$STEP2
else
let pwm=$pwm-$STEP
fi
done
pwmdisable $P
if [ "$PLOT" = "y" ]
then
$PLOTTER $TMP1
rm -f $TMP1 $TMP2
fi
echo
}
for i in $GOODPWM
do
echo Testing pwm control $i ...
pwmenable $i
if [ $? -ne 0 ]
then
echo "Manual control mode not supported, skipping."
continue
fi
pwmset $i 0
sleep $DELAY
if [ $? -ne 0 ]
then
pwmdisable $i
echo '^C received, restoring PWM and aborting...'
exit 1
fi
let pwmactivecount=0
let count=1
for j in $GOODFAN
do
OS=`echo $SPEEDS | cut -d' ' -f$count`
# this will return the first field if there's only one (sysfs)
S=`cat $j | cut -d' ' -f2`
echo " $j ... speed was $OS now $S"
pwmdisable $i
let threshold=2*$OS/3
if [ $S -lt $threshold ]
then
echo " It appears that fan $j"
echo " is controlled by pwm $i"
#
# a PWM can control more than one fan....
#
if [ $pwmactivecount -eq 0 ]
then
let pwmactivecount=1
pwmactive="$i ${pwmactive}"
fanactive="$j ${fanactive}"
fanactive_min="$S ${fanactive_min}"
else
fanactive="$j+${fanactive}" #not supported yet by fancontrol
fanactive_min="$S+${fanactive_min}"
fi
sleep $DELAY
if [ $? -ne 0 ]
then
echo '^C received, aborting...'
exit 1
fi
# this will return the first field if there's only one (sysfs)
S=`cat $j | cut -d' ' -f2`
if [ $S -lt $threshold ]
then
echo " Fan $j has not returned to speed, please investigate!"
else
echo -n "Would you like to generate a detailed correlation (y)? "
read X
if [ "$X" = "y" -o "$X" = "Y" -o "$X" = "" ]
then
pwmdetail $i $j
fi
fi
else
echo " no correlation"
fi
let count=count+1
done
echo
if [ "$pwmactivecount" = "0" ]
then
echo "No correlations were detected."
echo "There is either no fan connected to the output of $i,"
echo "or the connected fan has no rpm-signal connected to one of"
echo "the tested fan sensors. (Note: not all motherboards have"
echo "the pwm outputs connected to the fan connectors,"
echo "check out the hardware database on http://www.almico.com/forumindex.php)"
echo
echo -n "Did you see/hear a fan stopping during the above test (n)? "
read X
if [ "$X" = "y" -o "$X" = "Y" ]
then
pwmactive="$i ${pwmactive}"
fi
echo
fi
done
echo 'Testing is complete.'
echo 'Please verify that all fans have returned to their normal speed.'
echo
echo 'The fancontrol script can automatically respond to temperature changes'
echo 'of your system by changing fanspeeds.'
echo -n 'Do you want to set up its configuration file now (y)? '
read X
if [ "$X" = "n" -o "$X" = "N" ]
then
exit
fi
for device in $DEVICES
do
# Find available temperature monitoring inputs
MATCH=$device/'temp[1-9]_input'
device_temp=`echo $MATCH`
if [ "$MATCH" != "$device_temp" ]
then
TEMPS="$TEMPS $device_temp"
fi
done
if [ -z "$TEMPS" ]
then
echo $0: 'There are no temperature-capable sensor modules installed'
exit 1
fi
function AskPath()
{
echo -n 'What should be the path to your fancontrol config file (/etc/fancontrol)? '
read FCCONFIG
if [ "$FCCONFIG" = "" ]
then
FCCONFIG="/etc/fancontrol"
fi
}
AskPath
function ClearConfig()
{
FCTEMPS=""
FCFANS=""
MINTEMP=""
MAXTEMP=""
MINSTART=""
MINSTOP=""
MINPWM=""
MAXPWM=""
}
function LoadConfig()
{
# Nothing to do
if [ ! -f "$1" ]
then
ClearConfig
return 0
fi
echo "Loading configuration from $1 ..."
INTERVAL=`egrep '^INTERVAL=.*$' $1 | sed -e 's/INTERVAL= *//g'`
FCTEMPS=`egrep '^FCTEMPS=.*$' $1 | sed -e 's/FCTEMPS= *//g'`
FCFANS=`egrep '^FCFANS=.*$' $1 | sed -e 's/FCFANS= *//g'`
MINTEMP=`egrep '^MINTEMP=.*$' $1 | sed -e 's/MINTEMP= *//g'`
MAXTEMP=`egrep '^MAXTEMP=.*$' $1 | sed -e 's/MAXTEMP= *//g'`
MINSTART=`egrep '^MINSTART=.*$' $1 | sed -e 's/MINSTART= *//g'`
MINSTOP=`egrep '^MINSTOP=.*$' $1 | sed -e 's/MINSTOP= *//g'`
MINPWM=`egrep '^MINPWM=.*$' $1 | sed -e 's/MINPWM= *//g'`
MAXPWM=`egrep '^MAXPWM=.*$' $1 | sed -e 's/MAXPWM= *//g'`
# Check for configuration change
local item
for item in $FCFANS
do
if [ ! -f "`echo $item | sed -e 's/=.*$//'`" ]
then
echo "Configuration appears to be outdated, discarded"
ClearConfig
return 0
fi
done
}
LoadConfig $FCCONFIG
# $1 = pwm value below which the fan is stopped
function TestMinStart()
{
echo
echo 'Now we increase the PWM value in 10-unit-steps.'
echo 'Let the fan stop completely, then press return until the'
echo "fan starts spinning. Then enter 'y'."
echo 'We will use this value +20 as the starting speed.'
let fanok=0
let fanval="$1"
pwmenable $pwms
until [ "$fanok" = "1" ]
do
if [ $fanval -gt 240 ] ; then let fanval=$MAX ; let fanok=1 ; fi
echo -n "Setting $pwms to $fanval..."
pwmset $pwms $fanval
read FANTEST
if [ "$FANTEST" != "" ] ; then let fanok=1 ; fi
let fanval=fanval+10
done
pwmdisable $pwms
let fanval=fanval+20
if [ $fanval -gt 240 ] ; then let fanval=$MAX ; fi
echo "OK, using $fanval"
}
# $1 = fan input to read the fan speed from
function TestMinStop()
{
local faninput=$1
local threshold=100000
local fanspeed
echo
echo 'Now we decrease the PWM value to figure out the lowest usable value.'
echo 'We will use a slightly greater value as the minimum speed.'
let fanval=$MAX
pwmenable $pwms
while [ $fanval -ge 0 ]
do
pwmset $pwms $fanval
sleep $PDELAY
fanspeed=`cat $faninput | cut -d' ' -f2`
if [ $fanspeed -gt $threshold ]
then
echo " PWM $fanval -> $fanspeed RPM (probably incorrect)"
break
else
echo " PWM $fanval -> $fanspeed RPM"
if [ $fanspeed = "0" -o $fanspeed = "-1" ]
then
break
fi
let threshold=fanspeed*6/5
fi
if [ $fanval -lt $STEP2_BELOW ]
then
let fanval=$fanval-$STEP2
else
let fanval=$fanval-$STEP
fi
done
pwmdisable $pwms
if [ $fanval -lt $STEP2_BELOW ]
then
let 'fanval=fanval+2*STEP2'
else
let 'fanval=fanval+STEP'
fi
echo "OK, using $fanval"
}
function SaveConfig()
{
echo
echo "Saving configuration to $FCCONFIG..."
tmpfile=`mktemp -t pwmcfg.XXXXXXXXXX` || { echo "$0: Cannot create temporary file" >&2; exit 1; }
trap " [ -f \"$tmpfile\" ] && /bin/rm -f -- \"$tmpfile\"" 0 1 2 3 13 15
echo "# Configuration file generated by pwmconfig, changes will be lost" >$tmpfile
echo -e "INTERVAL=$INTERVAL\nFCTEMPS=$FCTEMPS\nFCFANS=$FCFANS\nMINTEMP=$MINTEMP\nMAXTEMP=$MAXTEMP\nMINSTART=$MINSTART\nMINSTOP=$MINSTOP" >>$tmpfile
[ -n "$MINPWM" ] && echo "MINPWM=$MINPWM" >>$tmpfile
[ -n "$MAXPWM" ] && echo "MAXPWM=$MAXPWM" >>$tmpfile
mv $tmpfile $FCCONFIG
chmod +r $FCCONFIG
#check if file was written correctly
echo 'Configuration saved'
}
INTERVAL=10
PS3='select (1-n): '
DEFMINTEMP=20
DEFMAXTEMP=60
DEFMINSTART=150
DEFMINSTOP=100
function filter_cfgvar()
{
echo "$1" | sed -e 's/ /\n/g' \
| egrep "$2" \
| sed -e 's/.*=//g'
}
# "select" won't repeat the list of options, so we enclose it in a
# never-ending loop so that it starts over again with each iteration.
# I admit it's not exactly nice, but I do not have a better idea to
# keep usability at an acceptable level.
while [ 1 ] ; do
echo
echo 'Select fan output to configure, or other action:'
select pwms in $pwmactive "Change INTERVAL" "Just quit" "Save and quit" "Show configuration"; do
case $pwms in
"Change INTERVAL")
echo
echo "Current interval is $INTERVAL seconds."
echo -n "Enter the interval at which fancontrol should update PWM values (in s): "
read INTERVAL #check user input here
break ;;
"Just quit")
exit ;;
"Save and quit")
SaveConfig
exit ;;
"Show configuration")
echo
echo "Common Settings:"
echo "INTERVAL=$INTERVAL"
for pwmo in $pwmactive
do
echo
echo "Settings of ${pwmo}:"
echo " Depends on `filter_cfgvar "$FCTEMPS" "$pwmo"`"
echo " Controls `filter_cfgvar "$FCFANS" "$pwmo"`"
echo " MINTEMP=`filter_cfgvar "$MINTEMP" $pwmo`"
echo " MAXTEMP=`filter_cfgvar "$MAXTEMP" "$pwmo"`"
echo " MINSTART=`filter_cfgvar "$MINSTART" "$pwmo"`"
echo " MINSTOP=`filter_cfgvar "$MINSTOP" "$pwmo"`"
XMINP=`filter_cfgvar "$MINPWM" "$pwmo"`
[ -n "$XMINP" ] && echo " MINPWM=$XMINP"
XMAXP=`filter_cfgvar "$MAXPWM" "$pwmo"`
[ -n "$XMAXP" ] && echo " MAXPWM=$XMAXP"
done
echo
break ;;
"`echo ${pwmactive} |sed -e 's/ /\n/g' | egrep "${pwms}"`" )
pwmsed=`echo ${pwms} | sed -e 's/\//\\\\\//g'` #escape / for sed
echo
echo 'Devices:'
print_devices ""
echo
echo 'Current temperature readings are as follows:'
for j in $TEMPS
do
S=`cat $j`
let S="$S / 1000"
echo "$j $S"
done
FAN=`echo $fanactive|cut -d' ' -f$REPLY`
FAN_MIN=`echo $fanactive_min|cut -d' ' -f$REPLY`
FCFANS="`echo $FCFANS | sed -e "s/${pwmsed}[^ ]* *//g"` ${pwms}=$FAN"
echo
echo "Select a temperature sensor as source for ${pwms}:"
select tempss in $TEMPS "None (Do not affect this PWM output)"; do
if [ "$tempss" = "None (Do not affect this PWM output)" ]
then
break;
else
if [ "$FCTEMPS" = "" ]
then
FCTEMPS="${pwms}=${tempss}"
else
FCTEMPS="`echo $FCTEMPS | sed -e "s/${pwmsed}[^ ]* *//g"` ${pwms}=${tempss}"
fi
fi
echo
echo 'Enter the low temperature (degree C)'
echo -n "below which the fan should spin at minimum speed ($DEFMINTEMP): "
read XMT
if [ "$XMT" = "" ]
then
XMT=$DEFMINTEMP
fi
if [ "$MINTEMP" = "" ]
then
MINTEMP="${pwms}=${XMT}"
else
MINTEMP="`echo $MINTEMP | sed -e "s/${pwmsed}[^ ]* *//g"` ${pwms}=${XMT}"
fi
echo
echo 'Enter the high temperature (degree C)'
echo -n "over which the fan should spin at maximum speed ($DEFMAXTEMP): "
read XMT
if [ "$XMT" = "" ]
then
XMT=$DEFMAXTEMP
fi
if [ "$MAXTEMP" = "" ]
then
MAXTEMP="${pwms}=${XMT}"
else
MAXTEMP="`echo $MAXTEMP | sed -e "s/${pwmsed}[^ ]* *//g"` ${pwms}=${XMT}"
fi
if [ $FAN_MIN -eq 0 ]
then
echo
echo "Enter the minimum PWM value (0-$MAX)"
echo -n "at which the fan STOPS spinning (press t to test) ($DEFMINSTOP): "
read XMSTOP
if [ "$XMSTOP" = "" ]
then
XMSTOP=$DEFMINSTOP
fi
if [ "$XMSTOP" = "t" -o "$XMSTOP" = "T" ]
then
TestMinStop $FAN
XMSTOP=$fanval
fi
else
XMSTOP=0
fi
if [ "$MINSTOP" = "" ]
then
MINSTOP="${pwms}=${XMSTOP}"
else
MINSTOP="`echo $MINSTOP | sed -e "s/${pwmsed}[^ ]* *//g"` ${pwms}=${XMSTOP}"
fi
if [ $FAN_MIN -eq 0 ]
then
echo
echo "Enter the minimum PWM value ($XMSTOP-$MAX)"
echo -n "at which the fan STARTS spinning (press t to test) ($DEFMINSTART): "
read XMSTART
if [ "$XMSTART" = "" ]
then
XMSTART=$DEFMINSTART
fi
if [ "$XMSTART" = "t" -o "$XMSTART" = "T" ]
then
TestMinStart $XMSTOP
XMSTART=$fanval
fi
else
XMSTART=$DEFMINSTART
fi
if [ "$MINSTART" = "" ]
then
MINSTART="${pwms}=${XMSTART}"
else
MINSTART="`echo $MINSTART | sed -e "s/${pwmsed}[^ ]* *//g"` ${pwms}=${XMSTART}"
fi
if [ $XMSTOP -gt 0 ]
then
echo
echo "Enter the PWM value (0-$XMSTOP) to use when the temperature"
echo -n "is below the low temperature limit (0): "
read XMINP
else
XMINP=""
fi
if [ -n "$XMINP" ]
then
if [ "$MINPWM" = "" ]
then
MINPWM="${pwms}=${XMINP}"
else
MINPWM="`echo $MINPWM | sed -e "s/${pwmsed}[^ ]* *//g"` ${pwms}=${XMINP}"
fi
fi
echo
echo "Enter the PWM value ($XMSTOP-$MAX) to use when the temperature"
echo -n "is over the high temperature limit ($MAX): "
read XMAXP
if [ -n "$XMAXP" ]
then
if [ "$MAXPWM" = "" ]
then
MAXPWM="${pwms}=${XMAXP}"
else
MAXPWM="`echo $MAXPWM | sed -e "s/${pwmsed}[^ ]* *//g"` ${pwms}=${XMAXP}"
fi
fi
echo
break;
done
break ;;
*)
echo "No such option. Enter a number."
break ;;
esac
done
done