From 0cfd9c91b88b639e5ff9bf4e27cdea4400e7a90d Mon Sep 17 00:00:00 2001 From: Nirgal Date: Sun, 13 Oct 2019 00:57:14 +0000 Subject: [PATCH] Documentation & cleanup Make a decent README Now using an "ampy" system user Added GPL-3 licence flake8 & isort cleanup --- LICENSE | 674 +++++++++++++++++++++++++++++++++++++++++++++++ README.rst | 155 +++++++++++ init => etc/init | 2 +- etc/rrdcached | 57 ++++ readme | 21 -- record.py | 7 +- run.py | 52 ++-- 7 files changed, 917 insertions(+), 51 deletions(-) create mode 100644 LICENSE create mode 100644 README.rst rename init => etc/init (98%) create mode 100644 etc/rrdcached delete mode 100644 readme diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..94a9ed0 --- /dev/null +++ b/LICENSE @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/README.rst b/README.rst new file mode 100644 index 0000000..c6e19ae --- /dev/null +++ b/README.rst @@ -0,0 +1,155 @@ +=========================================== +Ampy - The spying meter that doesn't snitch +=========================================== + + +Hardware +======== + +You need a ampmeter sensor that outputs an audio signal. + +It has been tested with `this YHDC sensor`_. + +Installation is simple: You clip the sensor on the electrical line you want to mesure on one side. On the other side, you plug the jack in your sound card. + +DISCLAMER: You should check your sound card can handle the voltage. + +.. _`this YHDC sensor`: https://learn.openenergymonitor.org/electricity-monitoring/ct-sensors/yhdc-sct-013-000-ct-sensor-report + + +Dependencies +============ + +* apache2 +* libapache2-mod-php | php-cgi | php-fpm +* python3-pyaudio +* python3-rrdtool +* rrdcached +* ... + + +Setup +===== + +User setup +---------- + +Ampy requires permission to use the sound card. It's recommanded to create a dedicated user:: + + addgroup --system ampy # create a dedicated group + adduser --system --ingroup ampy --home /var/lib/ampy --disabled-password --disabled-login ampy + adduser ampy audio # ampy can use audio + adduser www-data ampy # httpd in group ampy + + +RRD database creation +--------------------- + +Ampy uses the Round Robin Database provided by RRDtool. + +:: + + rrdtool create /var/lib/rrdcached/db/power.rrd \ + --step 1s \ + DS:watts:GAUGE:1s:0:10000 \ + RRA:AVERAGE:0.5:1s:1d \ + RRA:AVERAGE:0.5:1m:3d \ + RRA:AVERAGE:0.5:15m:1w \ + RRA:AVERAGE:0.5:1h:30d \ + RRA:AVERAGE:0.5:1d:3y \ + RRA:MAX:0.5:1d:3y \ + RRA:AVERAGE:0.5:1month:10y \ + RRA:MAX:0.5:1month:10y + chown ampy: /var/lib/rrdcached/db/power.rrd + chmod 664 /var/lib/rrdcached/db/power.rrd + +Volume +------ + +Capture volume should be as high as possible, without clipping. A good value is 0 dB:: + + root:~# amixer -c 1 contents + numid=23,iface=mixer,name='capture volume' + ; type=integer,access=rw---r--,values=2,min=0,max=46,step=0 + : values=17,17 + | dbscale-min=-16.00db,step=1.00db,mute=0 + +In that case volume should be set to 17. + +You can also use ``alsamixer``. The control should show ``Capture [dB gain: 0.00, 0.00]``. + + +rrdcached setup +--------------- + +rrdcached socket must be available to both ampy daemon and apache. + +See/copy ``etc/rrdcached`` in ``/etc/default/rrdcached``. + + +Select the audio input +---------------------- + +Run device.py to find out which entry you should use. + +Then adjust DEVICE in run.py + +At this point, ``sudo -u ampy run.py --norecord`` should run and give you a value. + +Calibration +----------- + +You'll need to adjust VOLUME_CONSTANT in run.py so that you get the correct voltage value. + +Autostart +--------- + +:: + ln -s /home/nirgal/ampy/etc/init /etc/init.d/ampy + update-rc.d ampy defaults + +Apache +------ + +Just point your DocumentRoot to the ampy/html directory. + +You should really password protect the access with something. Create a password file:: + + root:~# htpasswd /var/lib/ampy/htusers myusername + +Then add something like that in your apache configuration file:: + + + AuthType Basic + AuthName "Ampy's Realm" + AuthUserFile /var/lib/ampy/htusers + Require valid-user + + # Certbot / let's encrypt challenge dir has no password: + + Require all granted + + + +Counter initialization +---------------------- + +If you have a relugar electric meter:: + + echo "123456" > /var/lib/ampy/counter + chown ampy: /var/lib/ampy/counter + +Notes to cleanup (ignore that) +============================== + +:: + + rrdtool create power.rrd --daemon /var/run/rrdcached.sock --step 1s DS:watts:GAUGE:1:0:6600 RRA:AVERAGE:0.5:1s:1d + # Buggy: nécessite des updates toutes les 500 ms + + + Ceci n'est pas rafraîchi très souvent: + + watch -n 0.5 rrdtool graphv - '-s' '1546280606' 'DEF:watts=/var/lib/rrdcached/db/power.rrd:watts:AVERAGE' 'VDEF:avg=watts,AVERAGE' 'VDEF:last=watts,LAST' 'PRINT:avg:%lf' 'PRINT:last:%lf' + Alors que ça si: + watch -n 0.5 rrdtool lastupdate --daemon /var/run/rrdcached.sock /var/lib/rrdcached/db/power.rrd diff --git a/init b/etc/init similarity index 98% rename from init rename to etc/init index 1ed9146..3d45380 100755 --- a/init +++ b/etc/init @@ -11,7 +11,7 @@ PATH=/bin:/usr/bin:/sbin:/usr/sbin PIDFILE=/var/run/ampy.pid -USER=nirgal +USER=ampy GROUP=ampy PROG=/usr/bin/python3 ARGS=/home/nirgal/ampy/run.py diff --git a/etc/rrdcached b/etc/rrdcached new file mode 100644 index 0000000..eeba76a --- /dev/null +++ b/etc/rrdcached @@ -0,0 +1,57 @@ +# /etc/default file for RRD cache daemon + +# Full path to daemon +DAEMON=/usr/bin/rrdcached + +# Optional override flush interval, in seconds. +#WRITE_TIMEOUT=300 + +# Optional override maximum write delay, in seconds. +#WRITE_JITTER=0 + +# Optional override number of write_threads +#WRITE_THREADS=4 + +# Where database files are placed. If left unset, the default /tmp will +# be used. NB: The daemon will reject a directory that has symlinks as +# components. NB: You may want to have -B in BASE_OPTS. +BASE_PATH=/var/lib/rrdcached/db/ + +# Where journal files are placed. If left unset, journaling will +# be disabled. +JOURNAL_PATH=/var/lib/rrdcached/journal/ + +# FHS standard placement for process ID file. +PIDFILE=/var/run/rrdcached.pid + +# FHS standard placement for local control socket. +SOCKFILE=/var/run/rrdcached.sock + +# Optional override group that should own/access the local control +# socket +SOCKGROUP=ampy + +# Optional override access mode of local control socket. +SOCKMODE=0660 + +# Optional unprivileged group to run under when daemon. If unset +# retains invocation group privileges. +#DAEMON_GROUP=_rrdcached + +# Optional unprivileged user to run under when daemon. If unset +# retains invocation user privileges. +#DAEMON_USER=_rrdcached + +# Network socket address requests. Use in conjunction with SOCKFILE to +# also listen on INET domain sockets. The option is a lower-case ell +# ASCII 108 = 0x6c, and should be repeated for each address. The +# parameter is an optional IP address, followed by an optional port with +# a colon separating it from the address. The empty string is +# interpreted as "open sockets on the default port on all available +# interfaces", but generally does not pass through init script functions +# so use -L with no parameters for that configuration. +#NETWORK_OPTIONS="-L" + +# Any other options not specifically supported by the script (-P, -f, +# -F, -B). +BASE_OPTIONS="-B" diff --git a/readme b/readme deleted file mode 100644 index 9defae2..0000000 --- a/readme +++ /dev/null @@ -1,21 +0,0 @@ -https://learn.openenergymonitor.org/electricity-monitoring/ct-sensors/yhdc-sct-013-000-ct-sensor-report - -rrdtool create power.rrd --step 1s DS:watts:GAUGE:1:0:6600 RRA:AVERAGE:0.5:1s:1d # Buggy: nécessite des updates toutes les 500 ms -rrdtool create power.rrd --daemon /var/run/rrdcached.sock --step 1s DS:watts:GAUGE:1:0:6600 RRA:AVERAGE:0.5:1s:1d # Buggy: nécessite des updates toutes les 500 ms - -rrdtool create /var/lib/rrdcached/db/power.rrd \ - --step 1s \ - DS:watts:GAUGE:1s:0:10000 \ - RRA:AVERAGE:0.5:1s:1d \ - RRA:AVERAGE:0.5:1m:3d \ - RRA:AVERAGE:0.5:15m:1w \ - RRA:AVERAGE:0.5:1h:30d \ - RRA:AVERAGE:0.5:1d:3y \ - RRA:MAX:0.5:1d:3y \ - RRA:AVERAGE:0.5:1month:10y \ - RRA:MAX:0.5:1month:10y - -Ceci n'est pas rafraîchi très souvent: -watch -n 0.5 rrdtool graphv - '-s' '1546280606' 'DEF:watts=/var/lib/rrdcached/db/power.rrd:watts:AVERAGE' 'VDEF:avg=watts,AVERAGE' 'VDEF:last=watts,LAST' 'PRINT:avg:%lf' 'PRINT:last:%lf' -Alors que ça si: -watch -n 0.5 rrdtool lastupdate --daemon /var/run/rrdcached.sock /var/lib/rrdcached/db/power.rrd diff --git a/record.py b/record.py index 8b4207d..69cb10f 100755 --- a/record.py +++ b/record.py @@ -4,9 +4,10 @@ PyAudio example: Record a few seconds of audio and save to a WAVE file. """ -import pyaudio -import wave import sys +import wave + +import pyaudio CHUNK = 1024 FORMAT = pyaudio.paInt16 @@ -14,7 +15,7 @@ CHANNELS = 2 RATE = 44100 RECORD_SECONDS = 5 WAVE_OUTPUT_FILENAME = "output.wav" -DEVICE = 3 +DEVICE = 5 if sys.platform == 'darwin': CHANNELS = 1 diff --git a/run.py b/run.py index edff65e..3a599fc 100755 --- a/run.py +++ b/run.py @@ -5,27 +5,19 @@ file. """ import os -import pyaudio -import wave -import sys import struct import time +import pyaudio + FORMAT = pyaudio.paInt32 # Format STRUCTFORMAT = 'i' # Format for python struct module -DEVICE = 3 # which alsa decive to read +DEVICE = 5 # which alsa decive to read RATE = 44100 RECORD_SECONDS = 0.5 VOLUME_CONSTANT = 132360.98315789475 -#amixer -c 1 contents -# numid=23,iface=MIXER,name='Capture Volume' -# ; type=INTEGER,access=rw---R--,values=2,min=0,max=46,step=0 -# : values=17,17 -# | dBscale-min=-16.00dB,step=1.00dB,mute=0 -# => Set volume to 18 - # https://www.actutem.com/valeur-crete-moyenne-et-efficace-dune-tension-ac/ # math.pi/math.sqrt(2)/2 = 1.1107207345395915 @@ -40,20 +32,22 @@ VOLUME_CONSTANT = 132360.98315789475 # https://fr.wikipedia.org/wiki/%C3%89lectricit%C3%A9_domestique#Tension # En france, ERDF fourni 230V EFFICACES (=> 207.0727527161344 moyenne) -#raw average: 636207384.4738322 - min: -2147483648 - max: 2147483392 -#average 4806.6W +# raw average: 636207384.4738322 - min: -2147483648 - max: 2147483392 +# average 4806.6W + def loop(optrecord, optstats): p = pyaudio.PyAudio() - + print("opened") NSAMPLE = int(RATE * RECORD_SECONDS) - stream = p.open(format=FORMAT, - channels=1, # Our ampmeter always returns 0 on the second channel - rate=RATE, - input=True, - input_device_index=DEVICE) - + stream = p.open( + format=FORMAT, + channels=1, # Our ampmeter always returns 0 on the second channel + rate=RATE, + input=True, + input_device_index=DEVICE) + structformat = '<' + STRUCTFORMAT * NSAMPLE while(True): try: @@ -62,8 +56,9 @@ def loop(optrecord, optstats): maxvalue = 0 data = stream.read(NSAMPLE, exception_on_overflow=False) values = struct.unpack(structformat, data) - #print(values) - #for x in range(100): print('**{:04x}**{}**'.format(values[x], values[x])) + # print(values) + # for x in range(100): + # print('**{:04x}**{}**'.format(values[x], values[x])) for value in values: if value > 0: total += value @@ -75,20 +70,24 @@ def loop(optrecord, optstats): minvalue = value avg = float(total) / NSAMPLE if optstats: - print("raw average: {} - min: {} - max: {}".format(avg, minvalue, maxvalue)) + print("raw average: {} - min: {} - max: {}".format( + avg, minvalue, maxvalue)) watts = avg / VOLUME_CONSTANT print("average {:.1f}W ".format(watts), end='\r') if optrecord: - #os.system("rrdtool update --daemon /var/run/rrdcached.sock power.rrd N:{}".format(watts)) - os.system("rrdtool update --daemon /var/run/rrdcached.sock /var/lib/rrdcached/db/power.rrd {}:{}".format(time.time(), watts)) + os.system( + "rrdtool update --daemon /var/run/rrdcached.sock" + " /var/lib/rrdcached/db/power.rrd {}:{}".format( + time.time(), watts)) except KeyboardInterrupt: print("Received KeyboardInterrupt: exiting") break - + stream.stop_stream() stream.close() p.terminate() + def main(): import argparse @@ -113,5 +112,6 @@ def main(): loop(optrecord=args.record, optstats=args.stats) + if __name__ == '__main__': main() -- 2.30.2