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#!/bin/sh
LOCK=/var/lock/LCK..ttyATH0.stm32
M=10.32.139.1
WATERS=0
MAX=65
OUTSIDE="$(mosquitto_sub -t tele/weather/tempc -h ${M} -W 1 -C 1 | sed -e 's/\..*$//g') "
logger -t thermostat " outside is $OUTSIDE"
# conventions
# POWER is power to valve coil
# OPEN is valve state
# DELTA is temp difference
# var1 is low set point
# var2 is high set point
# var3 is manual override
# towel radiators
FUZZY=0
for i in laundry_radiator bathroom_radiator; do
O="$(mosquitto_sub -t stat/$i/OPEN -h ${M} -W 1 -C 1)"
P="$(mosquitto_sub -t stat/$i/POWER -h ${M} -W 1 -C 1)"
if [ "$P" == "OFF" -a "$O" == "1" ]; then
FUZZY=1
O=0
fi
if [ "$P" == "ON" -a "$O" == "0" ]; then
FUZZY=1
fi
W=0
if [ "$O" == "1" ]; then
W=$MAX
fi
WATERS="$WATERS $W"
logger -t thermostat " $i O=$O W=$W"
done
#... others where we care about the delta
for i in kstudy_radiator bedroom_radiator spare_bedroom_radiator dd_radiator1 dd_radiator2 dd_radiator3 hall_radiator kitchen_radiator music_room_radiator 2fl_stair_radiator 2fl_main_radiator boxroom_radiator; do
O="$(mosquitto_sub -t stat/$i/OPEN -h ${M} -W 1 -C 1)"
P="$(mosquitto_sub -t stat/$i/POWER -h ${M} -W 1 -C 1)"
if [ "$P" == "OFF" -a "$O" == "1" ]; then
FUZZY=1
O=0
fi
if [ "$P" == "ON" -a "$O" == "0" ]; then
FUZZY=1
fi
T="$(mosquitto_sub -t stat/$i/TEMPERATURE -h ${M} -W 1 -C 1 | sed -e 's/\..*$//g') "
D="$(expr $T - $OUTSIDE)"
W=0
if [ "$O" == "1" ]; then
W="$( expr \( \( \( $D * 2 \) / 3 \) + 55 \) )"
#W="$( expr $D \* 5 + 45 )"
fi
logger -t thermostat " $i O=$O D=$D W=$W"
WATERS="$WATERS $W"
done
R=0
for w in ${WATERS}; do
if [ $w -gt $R ]; then
R=$w
fi
done
if [ $R -gt $MAX ]; then
R=$MAX
fi
if [ "$FUZZY" -eq 1 ]; then
logger -t thermostat "Fuzzy=1, stopping pump"
R=0
fi
if [ ! -f "${LOCK}" ]; then
logger -t thermostat "Requesting water temp of $R"
printf "\nCH=%d\n" $R > /dev/ttyATH0
else
logger -t thermostat "Interface is locked, so cant request water temp of $R"
fi
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