implement real people counter hardware

fixed IP for projector
add readme.txt

README.txt

@@ -0,0 +1,23 @@
+Pidor is controlling the state of Level2 on the website, spaceapi and twitter
+
+This documentation is work in progress, sorry about that.
+
+Install
+put this in /etc/inittab (see example in systemfiles/inittab)
+# pidor
+P0:2345:respawn:/root/pidor/scripts/lockbutton.sh
+P1:2345:respawn:/root/pidor/scripts/beamerdetect.sh
+P2:2345:respawn:/root/pidor/scripts/ws4beamer_status.py
+P3:2345:respawn:/root/pidor/scripts/peoplecounter-realtime.sh
+
+put the beamer IP into beamerip.txt
+put the peoplecounter ip into peoplecounterip.txt
+
+fill in the crontab
+* * * * * /root/pidor/scripts/dhcp2presency.sh
+* * * * * /root/pidor/scripts/upd_status.sh > /run/spacestatus.out 2>&1
+
+needs an apache, for some silly historic reason, and for the lights commander
+cd ~/pidor/www && ./intallwebsite.sh
+
+

scripts/beamerdetect.sh

@@ -1,19 +1,34 @@
 #!/bin/bash
+BEAMERIP=$(cat $(dirname "$0")"/beamerip.txt")
+function raisescreen() {
+  echo "Rolling projection screen up"
+  ssh pi@doorbuzz 'doorbuzz/projectionscreen.sh up'
+}
+function pingall() {
+  i=1
+  while [ $i -lt 255 ]
+  do
+    ping -c 1 10.2.113.$i -q >/dev/null &
+    i=$((i+1))
+  done
+  wait 
+}
 if [ "$1" = "off" ]
 then
   (
   echo "called with parameter $1"
-  projip=$(arp -an|awk -F'[()]' '/00:50:41:79:d1:34/{print $2}')
+  projip="$BEAMERIP"
   if [ "$projip" = "" ]
   then
     echo "no projector IP found"
-    arp -a
+    arp -a 
+    raisescreen
     exit
   fi
   signalsource="$(wget -qO - 'http://'"$projip"'/tgi/return.tgi?query=info' |awk -F'[<>]' '/<info>/{print substr($3,33,2)}')"
   if [ "$signalsource" = "00" ] || [ "$signalsource" = "15" ] || [ "$signalsource" = "" ]
   then
-    ssh pi@doorbuzz 'doorbuzz/projectionscreen.sh up'
+    raisescreen
     echo "wget http://$projip/tgi/return.tgi?command=2a3102fd0660 #projector off"
     wget -qO - 'http://'"$projip"'/tgi/return.tgi?command=2a3102fd0660' 2>&1 
     echo $? 
@@ -22,12 +37,20 @@ then
   fi
   ) | logger -t "$(basename $0) $$"
   exit
+fi &
+if [ "$1" = "off" ]
+then
+  exit # because the if before is in background 
 fi
 prevstatus="unknown"
 while true
 do
-  projip=$(arp -an|awk -F'[()]' '/00:50:41:79:d1:34/{print $2}')
-  # from the acer webpage we read that bytes 30-31 contain 00 if poer off and 01 if power on
+  if [ $(date +%H) -eq 23 ]
+  then
+    pingall
+  fi
+  projip="$BEAMERIP"
+  # from the acer webpage we read that bytes 30-31 contain 00 if power off and 01 if power on
   # we only test if 01, because if off, it can also give no response
   # but seems to be bytes 32-33 more accurate
   statusbyte="$(wget -qO - 'http://'"$projip"'/tgi/return.tgi?query=info'|awk -F'[<>]' '/<info>/{print substr($3,31,2)}')"  

scripts/dhcp2presency.sh

@@ -1,4 +1,16 @@
 #!/bin/bash
+PEOPLECOUNTERIP=$(cat $(dirname "$0")"/peoplecounterip.txt")
+# we now have a people counter
+p="$(
+ wget -qO - "http://$PEOPLECOUNTERIP/output.cgi?t=$(date +%s)" |
+ sed 's/.*Occupancy://'|
+ awk '{print $2}')"
+if [ "$p" != "" ]
+then
+  echo "$p" > /run/presency
+else
+  logger $0 cannot access people counter. fallback to dhcp value guessing
+fi
 n=0
 for i in $(ls /run/dhcp-leases/)
 do
@@ -18,4 +30,7 @@ do
     fi
   fi
 done
-echo "$n" > /run/presency
+if [ "$p" = "" ]  # write DHCP count if people counter offline
+then
+  echo "$n" > /run/presency
+fi

scripts/lockbutton.sh.d/changestatus

@@ -2,6 +2,10 @@
 # changes level2 state by the state of the main door
 # i.e. people have to leave it open to keep status open
 sleep 1   # silly way to debounce 
+if [ ! -f /run/spacestatus ]  # needed to init after boot
+then
+  cp -p /root/var/spacestatus /run/spacestatus
+fi
 if [ "$1" = "pushed" ] && 
    [ "$(cat /run/spacestatus)" = "open" ]   
 then

scripts/peoplecounter-realtime.sh

@@ -0,0 +1,34 @@
+#!/bin/bash
+#update peoplecounter number in realtime
+#but: this is too intrusive. should only update when the count of 
+@ people has not changed for a certain time
+PEOPLECOUNTERIP=$(cat $(dirname "$0")"/peoplecounterip.txt")
+state="online"
+while true
+do
+  p="$(
+    wget -qO - "http://$PEOPLECOUNTERIP/output.cgi?t=$(date +%s)" |
+    sed 's/.*Occupancy://'|
+    awk '{print $2}')"
+  if [ "$p" != "" ]
+  then
+    oldp="$(cat /run/peoplecounter)"
+    echo "$p" > /run/peoplecounter
+    if [ "$p" != "$oldp" ]
+    then
+      logger $0 changed from $oldp to $p people
+    fi
+    if [ "$state" = "offline" ]
+    then
+      state="online"
+      logger $0 people counter online
+    fi
+  else
+    if [ "$state" = "online" ]
+    then
+      state="offline"
+      logger $0 people counter offline
+    fi
+  fi
+  sleep 10
+done

scripts/upd_status.sh

@@ -1,4 +1,5 @@
 #!/bin/bash
+sleep 5
 IGNORE_DOORLOCKBUTTON="no"
 LockDir="/run/$(basename "$0").run"
 spaceapikey="$(cat "$(dirname $0)"/spaceapikey.txt)"

scripts/upd_status.sh.d/peoplecountercheck

@@ -0,0 +1,15 @@
+#!/bin/bash
+# this script only makes sense if there is a good people counter installed
+if [ "$1" = "closed" ] && [ "$2" = "open" ]
+then
+  p="$(cat /run/presency)"
+  if [ "$p" != "0" ]
+  then
+    logger $0 There are $p people, closed door from inside waiting 1 min. 
+    sleep 60
+    p="$(cat /run/presency)"
+    logger $0 There are $p people, closed door from inside after 1 min. 
+  else
+    logger $0 There are $p people, correctly closed door from outside. 
+  fi &
+fi

scripts/ws4beamer_status.py

@@ -0,0 +1,23 @@
+#!/usr/bin/env python2.7
+import requests
+import flask
+import re
+
+app = flask.Flask(__name__)
+
+@app.route("/")
+def status():
+    try:
+      res = requests.get("http://10.2.113.7/tgi/return.tgi?query=info", timeout=1)
+      if "NG" in res.content:
+        return "0"
+      reg_res = re.findall(b"<info>([^<]*)</info>", res.content)
+      status = str(reg_res[0][30:32])
+      if status == "01":
+        return "1"
+    except Exception as e:
+      print(e)
+    return "0"
+
+if __name__ == "__main__":
+    app.run("0.0.0.0", 5042)

systemfiles/inittab

@@ -74,3 +74,6 @@ T0:23:respawn:/sbin/getty -L ttyAMA0 115200 vt100
 # pidor
 P0:2345:respawn:/root/pidor/scripts/lockbutton.sh
 P1:2345:respawn:/root/pidor/scripts/beamerdetect.sh
+P2:2345:respawn:/root/pidor/scripts/ws4beamer_status.py
+P3:2345:respawn:/root/pidor/scripts/peoplecounter-realtime.sh
+