first commit based on running system
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README.md
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README.md
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# doorbuzz
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raspberry Pi opening the front door and playing videos
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the button has an RGB led to show status
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how to install
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==============
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put into /etc/rc.local the following line:
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su pi -c '/home/pi/buzzctrl.sh' &
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sudo vi /etc/xdg/lxsession/LXDE/autostart
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remove screensaver
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sudo apt-get install unclutter xdotool git-core screen imagemagick
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git clone git://git.drogon.net/wiringPi
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cd wiringPi
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./build
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mkdir -p /home/pi/.config/lxsession/LXDE/
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cat > /home/pi/.config/lxsession/LXDE/autostart <<"EOF"
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@xset s off
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@xset -dpms
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@xset s noblank
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@unclutter -display :0 -noevents -grab
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@./videoplayer.sh
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EOF
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connect the button and LED to pins as shown in buzzctrl.sh
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create a file "secret.txt" containing the http://user:pass@10.1.1.xx part of the URL
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adapt the URL in buzzctrl.sh
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adapt spaceapi URL in spacestatus.py
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put .mp4 videos into ~pi/ and they will show when your hackerspace is open
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you can add videos and they will be taken into account automatically
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when booting, the button led uses morsecode to send the low byte of the
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IP adress in decimal
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todo
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====
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create a config file
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put more of the hardcoded values from code into parameters
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make code resilient against missing commands (e.g. gpio not in PATH)
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move script to run in screen instead starting from rc.local
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#!/bin/bash
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BUTTONPIN=25
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REDLEDPIN=23
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GREENLEDPIN=18
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BLUELEDPIN=24
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BUZZERURL="$(cat "$(dirname "$0")"/secret.txt)/state.xml?relay1State=2&pulseTime1=5"
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BUZZERSTATUSURL="$(cat "$(dirname "$0")"/secret.txt)/state.xml"
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# file secret.txt should contain username:password
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# install by putting into /etc/rc.local
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# su pi -c '/home/pi/buzzctrl.sh' &
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echo "Initializing hardware"
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# the button
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gpio -g mode $BUTTONPIN up
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gpio -g mode $BUTTONPIN in
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# R
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gpio -g mode $REDLEDPIN out
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# G
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gpio -g mode $GREENLEDPIN out
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# B
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gpio -g mode $BLUELEDPIN out
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pulseon() {
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pin=$1
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value=0
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valueinc=64
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gpio -g mode $pin pwm
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while true
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do
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gpio -g pwm $pin $value
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value=$((value+valueinc))
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if [ $value -gt 1023 ] || [ $value -lt 0 ]
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then
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valueinc=$((0-valueinc))
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value=$((value+valueinc))
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fi
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sleep 0.2
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done
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}
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pulseoff() {
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pin=$1
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kill $2
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gpio -g mode $pin out
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gpio -g write $pin 0
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}
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ledcolor() {
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red=$1
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green=$2
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blue=$3
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gpio -g write $REDLEDPIN $red
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gpio -g write $GREENLEDPIN $green
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gpio -g write $BLUELEDPIN $blue
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}
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declare -a morse
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morse[0]="-----"
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morse[1]=".----"
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morse[2]="..---"
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morse[3]="...--"
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morse[4]="....-"
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morse[5]="....."
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morse[6]="-...."
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morse[7]="--..."
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morse[8]="---.."
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morse[9]="----."
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morseled() {
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message=$1
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echo $message
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msglen=${#message}
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pos=0
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while [ $pos -lt $msglen ]
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do
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morsecode=${morse[${message:${pos}:1}]}
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pos=$((pos+1))
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echo $morsecode
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morselen=${#morsecode}
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morsepos=0
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while [ $morsepos -lt $morselen ]
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do
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ledcolor $2 $3 $4
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#echo "c($morsepos)=${morsecode:${morsepos}:1}"
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if [ "${morsecode:${morsepos}:1}" = "." ]
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then
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#echo "."
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sleep 0.1
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else
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#echo "-"
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sleep 0.2
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fi
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ledcolor 0 0 0
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sleep 0.1
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morsepos=$((morsepos+1))
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done
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sleep 0.2
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echo
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done
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}
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echo "morsing IP"
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ledcolor 1 1 1
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sleep 3
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ledcolor 0 0 0
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sleep 1
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morseled "$(hostname -I|awk -F. '{sub(" ","",$NF);printf $NF}')" 1 0 0
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ledcolor 1 1 1
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sleep 1
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echo "Main loop"
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while true
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do
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ledcolor 0 1 1
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pulseon $GREENLEDPIN &
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pulsepid=$!
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trap "pulseoff $GREENLEDPIN $pulsepid;ledcolor 0 0 0;exit" 1 2 3
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gpio -g wfi $BUTTONPIN falling
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while [ $(gpio -g read $BUTTONPIN) != 0 ]
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do
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gpio -g wfi $BUTTONPIN falling
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done
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pulseoff $GREENLEDPIN $pulsepid
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ledcolor 0 1 1
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echo "Pushiii"
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wget -O - -S --timeout=1 --tries=1 "$BUZZERURL" 2>&1
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ret=$?
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if [ $ret -ne 0 ]
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then
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morseled "$ret" 1 0 0
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else
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while wget -O - --timeout=1 --tries=1 $BUZZERSTATUSURL|grep '<relay1state>1</relay1state>'
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do
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ledcolor 0 1 0
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sleep 0.9
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ledcolor 0 1 1
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sleep 0.1
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done
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fi
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echo "DOOONE"
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done
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@ -0,0 +1,5 @@
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import urllib, json
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url = "https://spaceapi.syn2cat.lu/status/json"
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response = urllib.urlopen(url);
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data = json.loads(response.read())
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print data["state"]["open"]
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@ -0,0 +1,21 @@
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#!/bin/bash
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if [ ! -f black.png ]
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then
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convert -size 1920x1080 xc:#000000 black.png
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fi
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killall feh
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trap "killall feh; killall omxplayer" 1 2 3 15
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feh -x black.png &
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while true
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do
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if [ "$(python ./spacestatus.py)" = "False" ]
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then # test on false, so in case of network fail, it defaults to playing
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sleep 60
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else
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ls *mp4 |
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while read video
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do
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omxplayer "$video" </dev/null
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done
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fi
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done
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