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feuchtigkeitssensor

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feuchtigkeitssensor [2014/09/14 19:14] – [DS-2438] der_vittifeuchtigkeitssensor [2018/04/01 16:03] (aktuell) – Titel jau
Zeile 1: Zeile 1:
-====== 1-Wire Feuchtigkeitssensor ====== +===(verschobene Seite)=== 
- +#redirect /hardware/channels/sensors/1_wire_moisture
-Dr. Claus Kühnel beschreibt unter [[http://www.ckuehnel.ch/PDF/Messung%20von%20Temperatur%20und%20Feuchtigkeit.pdf]] eine Möglichkeit, die Luftfeuchtigkeit per 1-Wire zu messen. +
- +
- +
- +
-===== HIH-5030 ===== +
- +
-Der HIH-5030,  +
-[[http://sensing.honeywell.com/honeywell-sensing-hih5030-5031%20series-product-sheet-009050-2-en.pdf?name=HIH-5030-001 +
-]] +
- +
- +
-===== DS-2438 ===== +
- +
-Smart Battery Monitor: +
-[[http://datasheets.maximintegrated.com/en/ds/DS2438.pdf]] +
- +
- +
- +
- +
-===== Das Script ===== +
- +
-<code> +
-#!/usr/bin/perl  +
- +
-# Created 2014.09.13  Sebastian Vitt  +
-# Version: 1.1    2014.09.14 +
-# Based on Allan Dyers 1Wire Humidity script at http://rants.dyer.com.hk/rpi/humidity_1w.html   +
-# If someone else also become annoyed becaus of the really looong running +
-# time of this script (like me) BUT knows how to build this +
-# in C (not like me) please tale although a look at +
-# http://www.tm3d.de/index.php/1wire-feuchtesensor +
- +
-use warnings; +
-use strict; +
-use Digest::CRC; +
-use LWP::UserAgent; +
-use Log::Log4perl; +
- +
-my @alldevs; +
-my $onewire = '/sys/bus/w1/devices/';            # including last slash +
-my $VZURL = 'http://192.168.0.91/middleware.php/';  # including last slash +
- +
-my $opt_d = 0;   # debug +
- +
-my $name; +
-my $onewireaddress; +
-my $uuid; +
-my $temp; +
-my $humidity; +
- +
- +
-###### +
-#    $OFF    $FATAL    $ERROR    $WARN    $INFO    $DEBUG    $TRACE    $ALL +
-#$log->error("No drink defined"); +
- +
-# Initialize logging +
-my $log_conf = q( +
-    log4perl.appender.Screen=Log::Dispatch::Screen +
-    log4perl.appender.Screen.stderr=0 +
-    log4perl.appender.Screen.Threshold=FATAL +
-    log4perl.appender.Screen.layout=Log::Log4perl::Layout::SimpleLayout +
-    log4perl.appender.Email=Log::Dispatch::Email::MailSender +
-    log4perl.appender.Email.smtp=spamcheck.pop-siegen.de +
-    log4perl.appender.Email.subject=1Wire Humidity Read Script +
-    log4perl.appender.Email.to=1whumidity_script@oktasilan.de +
-    log4perl.appender.Email.from=1wirehumidity@oktasilan.de +
-    log4perl.appender.Email.Threshold=WARN +
-    log4perl.appender.Email.layout=Log::Log4perl::Layout::SimpleLayout +
-    log4perl.rootLogger=WARN, Email, LOGFILE +
-    log4perl.appender.LOGFILE=Log::Log4perl::Appender::File +
-    log4perl.appender.LOGFILE.filename=/var/log/1w_humidity.log +
-    log4perl.appender.LOGFILE.mode=append +
-    log4perl.appender.LOGFILE.layout=PatternLayout +
-    log4perl.appender.LOGFILE.layout.ConversionPattern=[%d %r] %p %F Line: %L %M %c - %m%n +
-); +
-Log::Log4perl::init( \$log_conf ); +
-my $log = Log::Log4perl->get_logger(); +
-$log->info("********* 1-Wire Humidity Script started **********"); +
- +
- +
-# welche werte sollen geholt werden? +
-my %Daten = (           # Name => [ Adresse onewire, uuid-Volkszaehler ] +
-                        "KWL-Oben"       => ["26-0000019259f1", "dff9fce0-3aa0-11e4-85e7-91adc4f69e83" ] , +
-                        "KWL-ELW"        => ["26-000001925c6c", "d8f6a4a0-3aa0-11e4-ad4e-d5d9b759d00c" ]  +
-); +
-my $start_run = time(); +
- +
- +
-use Fcntl qw(:flock); +
-my $lockfile = '/tmp/1wire001.pid'; +
-sub BailOut { +
-    $log->info("$0 is already running, LockFile '$lockfile' is locked - exiting"); +
-    exit(1); +
-} +
- +
-$log->debug("start of program"); +
-open(my $fhpid, '>', $lockfile) or $log->error_die("error: open '$lockfile': $!"); +
-flock($fhpid, LOCK_EX|LOCK_NB) or BailOut(); +
-# Note: lock should be automatically released at end of program, +
-# no matter how the process is terminated. (the file persists, only the lock will be removed) +
- +
-while (($name) = each(%Daten)){ +
-  $onewireaddress =  $Daten{$name}[0] ; +
-  $log->debug("$onewire$onewireaddress/rw"); +
-  ($Daten{$name}[2],$Daten{$name}[3]) =  DS2438reader("$onewire$onewireaddress/rw") ; +
- +
-    $uuid     =  $Daten{$name}[1] ; +
-    $temp     =  $Daten{$name}[2] ; +
-    $humidity =  $Daten{$name}[3] ; +
-     +
-    if ($humidity) { +
-      $log->debug("$name $uuid $humidity"); +
- +
-      my $server_endpoint = $VZURL . "data/${uuid}.json?value=" . $humidity; +
-      $log->debug("serverget = $server_endpoint"); +
-      # set custom HTTP request header fields +
-      my $req = HTTP::Request->new(POST => $server_endpoint); +
-      $req->header('content-type' => 'application/json'); +
-      $req->header('x-auth-token' => 'kfksj48sdfj4jd9d'); +
- +
-      # add POST data to HTTP request body +
-      $req->content(" "); +
- +
-      my $ua = LWP::UserAgent->new; +
-      my $resp = $ua->request($req); +
-      if ($resp->is_success) { +
-        my $message = $resp->decoded_content; +
-        $log->debug("Received reply: $message"); +
-      } else { +
-        $log->error("HTTP GET error code: $resp->code"); +
-        $log->error("HTTP GET error message: $resp->message"); +
-      } +
-    } +
-} +
- +
-my $end_run = time(); +
-my $run_time = $end_run - $start_run; +
-$log->debug("Job took $run_time seconds"); +
- +
-sub DS2438reader { +
- my ($devf) = @_; +
-  my $rtime= time; +
-  $log->debug("Reading DS2438 / HIH-5030-001 $devf"); +
-  unless (open( DS2438, "+>$devf")) { +
-    #$log->error("Unable to open $devf $!"); +
-    return; +
-  } +
-  my $oldfh = select DS2438; $|= 1; select $oldfh; # autoflush +
-  my ($status, $vad, $vdd, $temp, $humid); +
-  print DS2438 "\x4e\x00\x00"; +
-  for (my $b="\x00"; $b eq "\x00"; ) { read DS2438, $b, 1; } +
-  print DS2438 "\x48\x00"; +
-  for (my $b="\x00"; $b eq "\x00"; ) { read DS2438, $b, 1; } +
-  print DS2438 "\x44"; +
-  for (my $b="\x00"; $b eq "\x00"; ) { read DS2438, $b, 1; } +
-  print DS2438 "\xb4"; +
-  for (my $b="\x00"; $b eq "\x00"; ) { read DS2438, $b, 1; } +
-  print DS2438 "\xb8\x00"; +
-  for (my $b="\x00"; $b eq "\x00"; ) { read DS2438, $b, 1; } +
-  print DS2438 "\xbe\x00"; +
-  ($status, $temp, $vad)= readTVC(); +
-  return unless defined($vad); +
-  if ($status) { +
-    print STDERR "DS2438 incorrect status reading VAD: " . sprintf( "%02d", $status); +
-    return; +
-  } +
-  print DS2438 "\x4e\x00\x08"; +
-  for (my $b="\x00"; $b eq "\x00"; ) { read DS2438, $b, 1; } +
-  print DS2438 "\x48\x00"; +
-  for (my $b="\x00"; $b eq "\x00"; ) { read DS2438, $b, 1; } +
-  print DS2438 "\xb4"; +
-  for (my $b="\x00"; $b eq "\x00"; ) { read DS2438, $b, 1; } +
-  print DS2438 "\xb8\x00"; +
-  for (my $b="\x00"; $b eq "\x00"; ) { read DS2438, $b, 1; } +
-  print DS2438 "\xbe\x00"; +
-  ($status, $temp, $vdd)= readTVC(); +
-  return unless defined($vdd); +
-  if ($status ^ 0x08) { +
-    print STDERR "DS2438 incorrect status reading VDD: " . sprintf( "%02d", $status); +
-    return; +
-  } +
-  if ($vad == $vdd) { +
-    #$log->warn($tsh, $hostname, undef, 'D008', 1, "DS2438 voltage match $vad"); +
-    $log->warn("DS2438 voltage match $vad"); +
-    return; +
-  } +
-  #$log->debug("H read ", (($vad / $vdd) - 0.1515) / 0.00636, "\tComp ", 1.0546 - 0.00216 * $temp); +
-  $humid= ($vad / $vdd - 0.1515) / 0.00636 / (1.0546 - 0.00216 * $temp); +
-  $log->debug("localtime() Temperature $temp Humidity $humid"); +
-   +
-#  return { temp => $temp, humid => $humid, time => (time - $rtime) }; +
-  return $temp,$humid; +
- +
-} +
- +
-sub readTVC { +
-  my $data; +
-  read DS2438, $data, 9; # and CRC +
-  my ($status, $t, $v, $c, $th, $crc) = unpack('CvvvCC', $data); +
-  #$log->debug("TVC raw %02x %02x %02x %02x %02x %02x %02x %02x %02x\n", unpack('C*', $data)); +
-  $log->debug("TVC $status, $t, $v, $c, $th, $crc"); +
-  unless (crcCheck(substr($data, 0, -1), substr($data, -1))) { +
-    #$log->error("$tsh, $hostname, undef, 'D009', 1,"DS2438 CRC error $status $t $v $c $th $crc"); +
-    $log->error("DS2438 CRC error $status $t $v $c $th $crc");; +
-    return; +
-  } +
-  my $temp = ($t >> 3) * 0.03125; +
-  $log->debug("T $temp V $v"); +
-  return $status, $temp, $v; +
-} +
- +
-sub crcCheck { +
-  # Dallas/Maxim CRC8 +
-  my ($r, $c) = @_; +
-  my $ctx = Digest::CRC->new(width => 8, poly => 0x31, init => 0x00, xorout => 0x00, refin => 1, refout => 1); +
-  $ctx->add($r); +
-  my $crc= $ctx->digest; +
-  if ($opt_d) { +
-    my @data = unpack('C*', $r); +
-    $log->debug("crcCheck %d %d | %02x %02x %02x %02x %02x %02x %02x %02x |",ord($c), $crc, @data); +
-  } +
-  $log->debug("CRC ", (ord($c) == $crc), " ", ord($c), " ", $crc); +
-  return (ord($c) == $crc); +
-} +
-</code> +
- +
feuchtigkeitssensor.1410714892.txt.gz · Zuletzt geändert: von der_vitti