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pwmconfig: write fan dependency to config file
fancontrol: monitor fan speed; trap signal and restore fans on trap; check read/write results and abort if fail; support 2.6 kernels; remove DEBUG=1 git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@2188 7894878c-1315-0410-8ee3-d5d059ff63e0
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Mark D. Studebaker committed
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@@ -2,7 +2,7 @@
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#
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# Simple script implementing a temperature dependent fan speed control
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#
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# Version 0.61
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# Version 0.62
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#
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# Usage: fancontrol [CONFIGFILE]
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#
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@@ -39,7 +39,8 @@
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#
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#
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DEBUG=1
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#DEBUG=1
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MAX=255
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echo $$ > /var/run/fancontrol.pid
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@@ -48,6 +49,7 @@ function LoadConfig {
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# grep configuration from file
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INTERVAL=`egrep '^INTERVAL=.*$' $1 | sed -e 's/INTERVAL=//g'`
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FCTEMPS=`egrep '^FCTEMPS=.*$' $1 | sed -e 's/FCTEMPS=//g'`
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FCFANS=`egrep '^FCFANS=.*$' $1 | sed -e 's/FCFANS=//g'`
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MINTEMP=`egrep '^MINTEMP=.*$' $1 | sed -e 's/MINTEMP=//g'`
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MAXTEMP=`egrep '^MAXTEMP=.*$' $1 | sed -e 's/MAXTEMP=//g'`
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MINSTART=`egrep '^MINSTART=.*$' $1 | sed -e 's/MINSTART=//g'`
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@@ -71,6 +73,7 @@ function LoadConfig {
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do
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AFCPWM[$fcvcount]=`echo $fcv |cut -d'=' -f1`
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AFCTEMP[$fcvcount]=`echo $fcv |cut -d'=' -f2`
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AFCFAN[$fcvcount]=`echo $FCFANS |sed -s 's/ /\n/g' |egrep "${AFCPWM[$fcvcount]}" |cut -d'=' -f2`
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AFCMINTEMP[$fcvcount]=`echo $MINTEMP |sed -s 's/ /\n/g' |egrep "${AFCPWM[$fcvcount]}" |cut -d'=' -f2`
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AFCMAXTEMP[$fcvcount]=`echo $MAXTEMP |sed -s 's/ /\n/g' |egrep "${AFCPWM[$fcvcount]}" |cut -d'=' -f2`
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AFCMINSTART[$fcvcount]=`echo $MINSTART |sed -s 's/ /\n/g' |egrep "${AFCPWM[$fcvcount]}" |cut -d'=' -f2`
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@@ -78,6 +81,7 @@ function LoadConfig {
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echo
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echo "Settings for ${AFCPWM[$fcvcount]}:"
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echo " Depends on ${AFCTEMP[$fcvcount]}"
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echo " Controls ${AFCFAN[$fcvcount]}"
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echo " MINTEMP=${AFCMINTEMP[$fcvcount]}"
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echo " MAXTEMP=${AFCMAXTEMP[$fcvcount]}"
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echo " MINSTART=${AFCMINSTART[$fcvcount]}"
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@@ -94,12 +98,67 @@ else
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LoadConfig /etc/fancontrol
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fi
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cd /proc/sys/dev/sensors/
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if (( $? != 0 )) ; then
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echo "Directory /proc/sys/dev/sensors/ does not exist, did you load the necessary kernel modules?"
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exit 1
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DIR=/proc/sys/dev/sensors
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SDIR=/sys/bus/i2c/devices
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if [ ! -d $DIR ]
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then
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if [ ! -d $SDIR ]
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then
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echo $0: 'No sensors found! (did you load the necessary modules?)'
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exit 1
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else
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SYSFS=1
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DIR=$SDIR
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fi
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fi
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cd $DIR
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# $1 = pwm file name
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function pwmdisable()
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{
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if [ "$SYSFS" = "1" ]
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then
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echo $MAX > $1
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ENABLE=${1/pwm/pwm_enable}
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if [ -f $ENABLE ]
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then
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echo 0 > $ENABLE
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fi
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else
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echo $MAX 0 > $1
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fi
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}
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# $1 = pwm file name
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function pwmenable()
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{
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if [ "$SYSFS" = "1" ]
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then
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ENABLE=${1/pwm/pwm_enable}
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if [ -f $ENABLE ]
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then
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echo 1 > $ENABLE
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fi
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else
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echo $MAX 1 > $1
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fi
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}
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function restorefans()
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{
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echo 'Aborting, restoring fans...'
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let fcvcount=0
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while (( $fcvcount < ${#AFCPWM[@]} )) # go through all pwm outputs
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do
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pwmo=${AFCPWM[$fcvcount]}
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pwmdisable $pwmo
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fcvcount=$fcvcount+1
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done
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echo 'Verify fans have returned to full speed'
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exit 1
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}
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trap restorefans SIGHUP SIGINT SIGQUIT
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# function doing all the math
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function calc () {
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@@ -114,25 +173,53 @@ function UpdateFanSpeeds {
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#hopefully shorter vars will improve readability:
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pwmo=${AFCPWM[$fcvcount]}
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tsens=${AFCTEMP[$fcvcount]}
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fan=${AFCFAN[$fcvcount]}
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mint=${AFCMINTEMP[$fcvcount]}
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maxt=${AFCMAXTEMP[$fcvcount]}
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minsa=${AFCMINSTART[$fcvcount]}
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minso=${AFCMINSTOP[$fcvcount]}
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tval=`cat ${tsens} |cut -d' ' -f3 |cut -d'.' -f1`
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pwmpval=`cat ${pwmo} | cut -d' ' -f1`
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tval=`cat ${tsens}`
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if [ $? -ne 0 ]
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then
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echo "Error reading temperature from $DIR/$tsens"
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restorefans
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fi
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tval=`echo ${tval} |cut -d' ' -f3 |cut -d'.' -f1`
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if [ "$SYSFS" = "1" ]
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then
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let tval="$tval / 1000"
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fi
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pwmpval=`cat ${pwmo}`
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if [ $? -ne 0 ]
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then
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echo "Error reading PWM value from $DIR/$pwmo"
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restorefans
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fi
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pwmpval=`echo ${pwmpval} | cut -d' ' -f1`
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fanval=`cat ${fan}`
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if [ $? -ne 0 ]
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then
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echo "Error reading Fan value from $DIR/$fan"
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restorefans
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fi
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fanval=`echo ${fanval} | cut -d' ' -f2`
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# debug info
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if [ "$DEBUG" != "" ]
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then
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echo "pwmo=$pwmo"
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echo "tsens=$tsens"
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echo "fan=$fan"
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echo "mint=$mint"
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echo "maxt=$maxt"
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echo "minsa=$minsa"
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echo "minso=$minso"
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echo "tval=$tval"
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echo "pwmpval=$pwmpval"
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echo "fanval=$fanval"
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fi
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if (( $tval <= $mint ))
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@@ -142,13 +229,18 @@ function UpdateFanSpeeds {
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else
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# calculate the new value from temperature and settings
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pwmval=`calc "(((${tval}-${mint})/(${maxt}-${mint}))^2*(255-${minso})+${minso})" |cut -d'.' -f1`
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if [ $pwmpval -eq 0 ]
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if [ $pwmpval -eq 0 -o $fanval -eq 0 ]
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then # if fan was stopped start it using a safe value
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echo $minsa > $pwmo
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sleep 1
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fi
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fi
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echo $pwmval > $pwmo # write new value to pwm output
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if [ $? -ne 0 ]
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then
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echo "Error writing PWM value to $DIR/$pwmo"
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restorefans
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fi
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if [ "$DEBUG" != "" ]
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then
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echo "new pwmval=$pwmval"
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@@ -157,6 +249,22 @@ function UpdateFanSpeeds {
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done
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}
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echo 'Enabling PWM on fans...'
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let fcvcount=0
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while (( $fcvcount < ${#AFCPWM[@]} )) # go through all pwm outputs
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do
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pwmo=${AFCPWM[$fcvcount]}
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pwmenable $pwmo
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if [ $? -ne 0 ]
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then
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echo "Error enabling PWM on $DIR/$pwmo"
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restorefans
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fi
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fcvcount=$fcvcount+1
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done
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echo 'Starting automatic fan control...'
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# main loop calling the main function at specified intervals
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while true
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do
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+12
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@@ -83,6 +83,7 @@ then
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exit 1
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fi
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# $1 = pwm file name
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function pwmdisable()
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{
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if [ "$SYSFS" = "1" ]
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@@ -98,6 +99,7 @@ function pwmdisable()
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fi
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}
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# $1 = pwm file name
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function pwmenable()
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{
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if [ "$SYSFS" = "1" ]
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@@ -112,6 +114,7 @@ function pwmenable()
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fi
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}
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# $1 = pwm file name; $2 = pwm value 0-255
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function pwmset()
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{
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echo $2 > $1
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@@ -290,6 +293,9 @@ do
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then
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let pwmactivecount=1
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pwmactive="$i ${pwmactive}"
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fanactive="$j ${fanactive}"
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else
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fanactive="$j+${fanactive}" #not supported yet by fancontrol
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fi
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sleep $DELAY
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if [ $? -ne 0 ]
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@@ -394,6 +400,7 @@ function LoadConfig {
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echo "Loading configuration from $1 ..."
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INTERVAL=`egrep '^INTERVAL=.*$' $1 | sed -e 's/INTERVAL=//g'`
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FCTEMPS=`egrep '^FCTEMPS=.*$' $1 | sed -e 's/FCTEMPS=//g'`
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FCFANS=`egrep '^FCFANS=.*$' $1 | sed -e 's/FCFANS=//g'`
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MINTEMP=`egrep '^MINTEMP=.*$' $1 | sed -e 's/MINTEMP=//g'`
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MAXTEMP=`egrep '^MAXTEMP=.*$' $1 | sed -e 's/MAXTEMP=//g'`
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MINSTART=`egrep '^MINSTART=.*$' $1 | sed -e 's/MINSTART=//g'`
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@@ -451,8 +458,8 @@ function TestMinStop {
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function SaveConfig {
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echo
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echo "Saving configuration to $FCCONFIG..."
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egrep -v '(INTERVAL|FCTEMPS|MAXTEMP|MINTEMP|MINSTART|MINSTOP)' /etc/fancontrol >/tmp/fancontrol
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echo -e "INTERVAL=$INTERVAL\nFCTEMPS=$FCTEMPS\nMINTEMP=$MINTEMP\nMAXTEMP=$MAXTEMP\nMINSTART=$MINSTART\nMINSTOP=$MINSTOP" >>/tmp/fancontrol
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egrep -v '(INTERVAL|FCTEMPS|FCFANS|MAXTEMP|MINTEMP|MINSTART|MINSTOP)' /etc/fancontrol >/tmp/fancontrol
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echo -e "INTERVAL=$INTERVAL\nFCTEMPS=$FCTEMPS\nFCFANS=$FCFANS\nMINTEMP=$MINTEMP\nMAXTEMP=$MAXTEMP\nMINSTART=$MINSTART\nMINSTOP=$MINSTOP" >>/tmp/fancontrol
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mv /tmp/fancontrol /etc/fancontrol
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#check if file was written correctly
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echo 'Configuration saved'
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@@ -492,6 +499,7 @@ select pwms in $pwmactive "Change INTERVAL" "Just quit" "Save and quit" "Show co
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echo
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echo "Settings of ${pwmo}:"
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echo " Depends on `echo $FCTEMPS |sed -e 's/ /\n/g' |egrep \"${pwmo}\" |sed -e 's/.*=//g'`"
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echo " Controls `echo $FCFANS |sed -e 's/ /\n/g' |egrep \"${pwmo}\" |sed -e 's/.*=//g'`"
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echo " MINTEMP=`echo $MINTEMP |sed -e \"s/ /\n/g\" |egrep \"${pwmo}\" |sed -e \"s/.*=//g\"`"
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echo " MAXTEMP=`echo $MAXTEMP |sed -e \"s/ /\n/g\" |egrep \"${pwmo}\" |sed -e \"s/.*=//g\"`"
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echo " MINSTART=`echo $MINSTART |sed -e \"s/ /\n/g\" |egrep \"${pwmo}\" |sed -e \"s/.*=//g\"`"
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@@ -513,6 +521,8 @@ select pwms in $pwmactive "Change INTERVAL" "Just quit" "Save and quit" "Show co
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fi
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echo "$j $S"
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done
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FAN=`echo $fanactive|cut -d' ' -f$REPLY`
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FCFANS="`echo $FCFANS | sed -e "s/${pwmsed}[^ ]* *//g\"` ${pwms}=$FAN"
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echo
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echo "Select a temperature sensor as source for ${pwms}:"
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select tempss in $TEMPS "None (Do not affect this PWM output)"; do
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