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PiGarden/drv/rainsensorqty/rainsensorqty_monitor.sh

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#!/bin/bash
#
# Bash monitor script to measure rainfall
# Author: androtto
#
#
###############
# MAIN #
###############
DIRNAME="$( dirname $0 )"
f="$(basename $0)"
. $DIRNAME/common.include.sh
echo "$(date) ---------------- NEW RUN "
if [[ -f "$DIRNAME/set_var" ]] ; then
echo "NORMAL: file $DIRNAME/set_var found - getting variables"
. "$DIRNAME/set_var"
else
echo "ERROR: $DIRNAME/set_var not found"
exit 1
fi
#drvt="$( echo $RAIN_GPIO | $CUT -f 1 -d: )"
#drv="$( echo $RAIN_GPIO | $CUT -f 2 -d: )"
gpio_port="$( echo $RAIN_GPIO | $CUT -f 3 -d: )"
#got from config file above:
#RAINSENSORQTY_LASTRAIN="$STATUS_DIR/rainsensorqty_lastrain"
#RAINSENSORQTY_LOG="$DIR_SCRIPT/log/rainsensorqty.log"
#RAINSENSORQTY_MONPID="$TMP_PATH/rainsensorqty_monitor.pid"
#RAINSENSORQTY_DIR="$DIR_SCRIPT/drv/rainsensorqty"
#RAINSENSORQTY_PULSE=falling
#RAINSENSORQTY_WAIT=rising
# no other monitor process running...
if [[ -f "$RAINSENSORQTY_MONPID" ]] ; then
pid="$( < "$RAINSENSORQTY_MONPID" )"
if ps -fp $pid >/dev/null ; then
drv_rainsensorqty_writelog $f "ERROR monitor process already running\n$( ps -fp $pid )"
exit 1
fi
fi
#drv_rainsensorqty_writelog $f "NORMAL - no rainmonitor process already running"
echo $$ > $RAINSENSORQTY_MONPID
drv_rainsensorqty_writelog $f "NORMAL - $$ pid monitor process started - see $RAINSENSORQTY_MONPID"
#echo "NORMAL: no raining monitor process $( echo ; ps -ef | grep rain | grep monitor)"
# init variables
MMEACH="$RAINSENSORQTY_MMEACH"
counter=0
while true
do
before=`date +%s`
echo $GPIO -g wfi $gpio_port $RAINSENSORQTY_PULSE # falling 1->0
$GPIO -g wfi $gpio_port $RAINSENSORQTY_PULSE # falling 1->0
#sleep $(</tmp/secs_to_wait) # for testing only
now=`date +%s`
(( elapsed = now - before ))
if (( $elapsed >= $RAINSENSORQTY_SECSBETWEENRAINEVENT )) ; then
counter=0
drv_rainsensorqty_writelog $f "$elapsed seconds elapsed ( greater than $RAINSENSORQTY_SECSBETWEENRAINEVENT set ) since last rain, first $MMEACH mm rain"
echo "$elapsed seconds elapsed ( greater than $RAINSENSORQTY_SECSBETWEENRAINEVENT set ) since last rain, first $MMEACH mm rain (first loop)"
fi
counter=$(( counter+=1 ))
MMWATER=$( $JQ -n "$counter*$MMEACH" )
drv_rainsensorqty_writelog $f "now is $MMWATER mm rain"
echo "now is $MMWATER mm rain (loop $counter)"
if (( $counter >= $RAINSENSORQTY_LOOPSFORSETRAINING )) ; then
drv_rainsensorqty_writelog $f "$MMWATER mm - irrigation to be stopped"
echo "$MMWATER mm - irrigation to be stopped (loop $counter)"
date +%s > ${RAINSENSORQTY_LASTRAIN}
date > ${RAINSENSORQTY_LASTRAIN}_date
fi
echo $GPIO -g wfi $gpio_port $RAINSENSORQTY_WAIT # rising 0->1
$GPIO -g wfi $gpio_port $RAINSENSORQTY_WAIT # rising 0->1
done