From 9d87c925a9eaa4fc256be3173c14a20d1469472d Mon Sep 17 00:00:00 2001
From: fishsoupisgood <github@madingley.org>
Date: Wed, 9 Sep 2020 11:53:37 +0100
Subject: everything, mostly, working

---
 boiler-monster/mr3020/usr/bin/thermostat | 70 ++++++++++++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100755 boiler-monster/mr3020/usr/bin/thermostat

(limited to 'boiler-monster/mr3020/usr')

diff --git a/boiler-monster/mr3020/usr/bin/thermostat b/boiler-monster/mr3020/usr/bin/thermostat
new file mode 100755
index 0000000..1689964
--- /dev/null
+++ b/boiler-monster/mr3020/usr/bin/thermostat
@@ -0,0 +1,70 @@
+#!/bin/sh
+
+LOCK=/var/lock/LCK..ttyATH0
+M=10.32.139.1
+
+WATERS=0
+MAX=70
+
+# 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
+
+for i in laundry_radiator bathroom_radiator; do
+  O="$(mosquitto_sub -t stat/$i/OPEN -h  ${M} -W 1 -C 1)"
+
+  W=0
+  if [ "$O" == "1" ]; then
+    W=$MAX
+  fi
+  WATERS="$WATERS $W"
+
+  logger -t thermostat " $i O=$O W=$W"
+done
+
+#... others where we care about the delta
+
+for i in kstudy_radiator bedroom_radiator spare_bedroom_radiator dd_radiator1 dd_radiator2 dd_radiator3 hall_radiator kitchen_radiator music_room_radiator; do
+  O="$(mosquitto_sub -t stat/$i/OPEN -h  ${M} -W 1 -C 1)"
+  D="$(mosquitto_sub -t stat/$i/DELTA -h  ${M} -W 1 -C 1 | sed -e 's/\..*$//g') "
+
+  W=0
+  if [ "$O" == "1" ]; then
+    W=$[ $D * 3 + 40]
+  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 [ ! -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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