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99_I2C_HYT321.pm
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99_I2C_HYT321.pm
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##############################################
# $Id: 99_I2C_HYT321.pm 5865 2014-05-14 23:00:12Z klauswitt $
package main;
use strict;
use warnings;
use Time::HiRes qw(usleep);
use Scalar::Util qw(looks_like_number);
#use Error qw(:try);
use constant {
HYT321_I2C_ADDRESS => '0x28',
};
##################################################
# Forward declarations
#
sub I2C_HYT321_Initialize($);
sub I2C_HYT321_Define($$);
sub I2C_HYT321_Attr(@);
sub I2C_HYT321_Poll($);
sub I2C_HYT321_Set($@);
sub I2C_HYT321_Undef($$);
my %sets = (
'readValues' => 1,
);
sub I2C_HYT321_Initialize($) {
my ($hash) = @_;
$hash->{DefFn} = 'I2C_HYT321_Define';
$hash->{InitFn} = 'I2C_HYT321_Init';
$hash->{AttrFn} = 'I2C_HYT321_Attr';
$hash->{SetFn} = 'I2C_HYT321_Set';
$hash->{UndefFn} = 'I2C_HYT321_Undef';
$hash->{I2CRecFn} = 'I2C_HYT321_I2CRec';
$hash->{AttrList} = 'IODev do_not_notify:0,1 showtime:0,1 poll_interval:1,2,5,10,20,30 ' .
'roundHumidityDecimal:0,1,2 roundTemperatureDecimal:0,1,2 ' .
$readingFnAttributes;
}
sub I2C_HYT321_Define($$) {
my ($hash, $def) = @_;
my @a = split('[ \t][ \t]*', $def);
$hash->{STATE} = "defined";
if ($main::init_done) {
eval { I2C_HYT321_Init( $hash, [ @a[ 2 .. scalar(@a) - 1 ] ] ); };
return I2C_HYT321_Catch($@) if $@;
}
return undef;
}
sub I2C_HYT321_Init($$) {
my ( $hash, $args ) = @_;
my $name = $hash->{NAME};
if (defined $args && int(@$args) > 1)
{
return "Define: Wrong syntax." . int(@$args) . " Usage:\n" .
"define <name> I2C_HYT321 [<i2caddress>]";
}
if (defined (my $address = shift @$args)) {
$hash->{I2C_Address} = $address =~ /^0.*$/ ? oct($address) : $address;
return "$name I2C Address not valid" unless ($hash->{I2C_Address} < 128 && $hash->{I2C_Address} > 3);
} else {
$hash->{I2C_Address} = hex(HYT321_I2C_ADDRESS);
}
my $msg = '';
# create default attributes
$msg = CommandAttr(undef, $name . ' poll_interval 5');
if ($msg) {
Log3 ($hash, 1, $msg);
return $msg;
}
AssignIoPort($hash);
$hash->{STATE} = 'Initialized';
# my %sendpackage = ( i2caddress => $hash->{I2C_Address}, direction => "i2cread" );
# $sendpackage{reg} = hex("AA");
# $sendpackage{nbyte} = 22;
# return "$name: no IO device defined" unless ($hash->{IODev});
# my $phash = $hash->{IODev};
# my $pname = $phash->{NAME};
# CallFn($pname, "I2CWrtFn", $phash, \%sendpackage);
return undef;
}
sub I2C_HYT321_Catch($) {
my $exception = shift;
if ($exception) {
$exception =~ /^(.*)( at.*FHEM.*)$/;
return $1;
}
return undef;
}
sub I2C_HYT321_Attr (@) {# hier noch Werteueberpruefung einfuegen
my ($command, $name, $attr, $val) = @_;
my $hash = $defs{$name};
my $msg = '';
if ($command && $command eq "set" && $attr && $attr eq "IODev") {
if ($main::init_done and (!defined ($hash->{IODev}) or $hash->{IODev}->{NAME} ne $val)) {
main::AssignIoPort($hash,$val);
my @def = split (' ',$hash->{DEF});
I2C_HYT321_Init($hash,\@def) if (defined ($hash->{IODev}));
}
}
if ($attr eq 'poll_interval') {
#my $pollInterval = (defined($val) && looks_like_number($val) && $val > 0) ? $val : 0;
if ($val > 0) {
RemoveInternalTimer($hash);
InternalTimer(1, 'I2C_HYT321_Poll', $hash, 0);
} else {
$msg = 'Wrong poll intervall defined. poll_interval must be a number > 0';
}
} elsif ($attr eq 'roundHumidityDecimal') {
$msg = 'Wrong $attr defined. Use one of 0, 1, 2' if defined($val) && $val <= 0 && $val >= 2 ;
} elsif ($attr eq 'roundTemperatureDecimal') {
$msg = 'Wrong $attr defined. Use one of 0, 1, 2' if defined($val) && $val <= 0 && $val >= 2 ;
}
return ($msg) ? $msg : undef;
}
sub I2C_HYT321_Poll($) {
my ($hash) = @_;
my $name = $hash->{NAME};
# Read values
I2C_HYT321_Set($hash, ($name, 'readValues'));
my $pollInterval = AttrVal($hash->{NAME}, 'poll_interval', 0);
if ($pollInterval > 0) {
InternalTimer(gettimeofday() + ($pollInterval * 60), 'I2C_HYT321_Poll', $hash, 0);
}
}
sub I2C_HYT321_Set($@) {
my ($hash, @a) = @_;
my $name = $a[0];
my $cmd = $a[1];
if(!defined($sets{$cmd})) {
return 'Unknown argument ' . $cmd . ', choose one of ' . join(' ', keys %sets)
}
if ($cmd eq 'readValues') {
# I2C_HYT321_readTemperature($hash);
# I2C_HYT321_readHumidity($hash);
I2C_HYT321_readTemperatureHumidity($hash);
}
}
sub I2C_HYT321_Undef($$) {
my ($hash, $arg) = @_;
RemoveInternalTimer($hash);
return undef;
}
sub I2C_HYT321_I2CRec ($$) {
my ($hash, $clientmsg) = @_;
my $name = $hash->{NAME};
my $phash = $hash->{IODev};
my $pname = $phash->{NAME};
while ( my ( $k, $v ) = each %$clientmsg ) { #erzeugen von Internals fuer alle Keys in $clientmsg die mit dem physical Namen beginnen
$hash->{$k} = $v if $k =~ /^$pname/ ;
}
if ($clientmsg->{direction} && $clientmsg->{type} && $clientmsg->{$pname . "_SENDSTAT"} && $clientmsg->{$pname . "_SENDSTAT"} eq "Ok") {
if ( $clientmsg->{direction} eq "i2cread" && defined($clientmsg->{received}) ) {
Log3 $hash, 5, "empfangen: $clientmsg->{received}";
# I2C_HYT321_GetTemp ($hash, $clientmsg->{received}) if $clientmsg->{type} eq "temp" && $clientmsg->{nbyte} == 2;
# I2C_HYT321_GetHum ($hash, $clientmsg->{received}) if $clientmsg->{type} eq "hum" && $clientmsg->{nbyte} == 2;
I2C_HYT321_GetTempHum ($hash, $clientmsg->{received}) if $clientmsg->{type} eq "temphum" && $clientmsg->{nbyte} == 4;
}
}
}
sub I2C_HYT321_GetTemp ($$) {
my ($hash, $rawdata) = @_;
my @raw = split(" ",$rawdata);
my $temperature = $raw[2] << 8 | $raw[3];
$temperature = (165.0 / 2**14) * ($temperature / 4) - 40.0; #( 175.72 * $temperature / 2**16 ) - 46.85;
$temperature = sprintf(
'%.' . AttrVal($hash->{NAME}, 'roundTemperatureDecimal', 1) . 'f',
$temperature
);
readingsSingleUpdate($hash,"temperature", $temperature, 1);
}
sub I2C_HYT321_GetHum ($$) {
my ($hash, $rawdata) = @_;
my @raw = split(" ",$rawdata);
my $name = $hash->{NAME};
my $temperature = ReadingsVal($name,"temperature","0");
my $humidity = $raw[0] << 8 | $raw[1];
$humidity = (100.0 / 2**14) * ($humidity & 16383); #( 125 * $humidity / 2**16 ) - 6;
$humidity = sprintf(
'%.' . AttrVal($hash->{NAME}, 'roundHumidityDecimal', 1) . 'f',
$humidity
);
readingsBeginUpdate($hash);
readingsBulkUpdate(
$hash,
'state',
'T: ' . $temperature . ' H: ' . $humidity
);
#readingsBulkUpdate($hash, 'temperature', $temperature);
readingsBulkUpdate($hash, 'humidity', $humidity);
readingsEndUpdate($hash, 1);
}
sub I2C_HYT321_GetTempHum ($$) {
my ($hash, $rawdata) = @_;
my @raw = split(" ",$rawdata);
my $name = $hash->{NAME};
my $temperature = $raw[2] << 8 | $raw[3];
my $humidity = $raw[0] << 8 | $raw[1];
$humidity = (100.0 / 2**14) * ($humidity & 16383); #( 125 * $humidity / 2**16 ) - 6;
$humidity = sprintf(
'%.' . AttrVal($hash->{NAME}, 'roundHumidityDecimal', 1) . 'f',
$humidity
);
$temperature = (165.0 / 2**14) * ($temperature / 4) - 40.0; #( 175.72 * $temperature / 2**16 ) - 46.85;
$temperature = sprintf(
'%.' . AttrVal($hash->{NAME}, 'roundTemperatureDecimal', 1) . 'f',
$temperature
);
readingsBeginUpdate($hash);
readingsBulkUpdate($hash, 'state', 'T: ' . $temperature . ' H: ' . $humidity);
readingsBulkUpdate($hash, 'temperature', $temperature);
readingsBulkUpdate($hash, 'humidity', $humidity);
readingsEndUpdate($hash, 1);
}
sub I2C_HYT321_readTemperature($) {
my ($hash) = @_;
my $name = $hash->{NAME};
return "$name: no IO device defined" unless ($hash->{IODev});
my $phash = $hash->{IODev};
my $pname = $phash->{NAME};
# Write 0x00 to device. This requests a reading
my $i2creq = { i2caddress => $hash->{I2C_Address}, direction => "i2cwrite" };
$i2creq->{data} = hex("00");
CallFn($pname, "I2CWrtFn", $phash, $i2creq);
usleep(85000); #fuer 14bit
# Read the four byte result from device
my $i2cread = { i2caddress => $hash->{I2C_Address}, direction => "i2cread" };
$i2cread->{nbyte} = 4;
$i2cread->{type} = "temp";
CallFn($pname, "I2CWrtFn", $phash, $i2cread);
return;
}
sub I2C_HYT321_readHumidity($) {
my ($hash) = @_;
my $name = $hash->{NAME};
return "$name: no IO device defined" unless ($hash->{IODev});
my $phash = $hash->{IODev};
my $pname = $phash->{NAME};
# Write 0x00 to device. This requests a reading
my $i2creq = { i2caddress => $hash->{I2C_Address}, direction => "i2cwrite" };
$i2creq->{data} = hex("00");
CallFn($pname, "I2CWrtFn", $phash, $i2creq);
usleep(39000); #fuer 12bit
# Read the four byte result from device
my $i2cread = { i2caddress => $hash->{I2C_Address}, direction => "i2cread" };
$i2cread->{nbyte} = 4;
$i2cread->{type} = "hum";
CallFn($pname, "I2CWrtFn", $phash, $i2cread);
return; # $retVal;
}
sub I2C_HYT321_readTemperatureHumidity($) {
my ($hash) = @_;
my $name = $hash->{NAME};
return "$name: no IO device defined" unless ($hash->{IODev});
my $phash = $hash->{IODev};
my $pname = $phash->{NAME};
# Write 0x00 to device. This requests a reading
my $i2creq = { i2caddress => $hash->{I2C_Address}, direction => "i2cwrite" };
$i2creq->{data} = hex("00");
CallFn($pname, "I2CWrtFn", $phash, $i2creq);
usleep(50000);
# Read the four byte result from device
my $i2cread = { i2caddress => $hash->{I2C_Address}, direction => "i2cread" };
$i2cread->{nbyte} = 4;
$i2cread->{type} = "temphum";
CallFn($pname, "I2CWrtFn", $phash, $i2cread);
return; # $retVal;
}
1;
=pod
=begin html
<a name="I2C_HYT321"></a>
<h3>I2C_HYT321</h3>
<ul>
<a name="I2C_HYT321"></a>
Provides an interface to the HYT321 I2C Humidity sensor from <a href="www.sensirion.com">Sensirion</a>.
The I2C messages are send through an I2C interface module like <a href="#RPII2C">RPII2C</a>, <a href="#FRM">FRM</a>
or <a href="#NetzerI2C">NetzerI2C</a> so this device must be defined first.<br>
<b>attribute IODev must be set</b><br>
<a name="I2C_SHT21Define"></a><br>
<b>Define</b>
<ul>
<code>define <name> I2C_HYT321 [<I2C Address>]</code><br>
where <code><I2C Address></code> is an 2 digit hexadecimal value<br>
</ul>
<a name="I2C_HYT321Set"></a>
<b>Set</b>
<ul>
<code>set <name> readValues</code><br>
Reads the current temperature and humidity values from sensor.<br><br>
</ul>
<a name="I2C_HYT321Attr"></a>
<b>Attributes</b>
<ul>
<li>poll_interval<br>
Set the polling interval in minutes to query data from sensor<br>
Default: 5, valid values: 1,2,5,10,20,30<br><br>
</li>
<li>roundHumidityDecimal<br>
Number of decimal places for humidity value<br>
Default: 1, valid values: 0 1 2<br><br>
</li>
<li>roundTemperatureDecimal<br>
Number of decimal places for temperature value<br>
Default: 1, valid values: 0,1,2<br><br>
</li>
<li><a href="#IODev">IODev</a></li>
<li><a href="#do_not_notify">do_not_notify</a></li>
<li><a href="#showtime">showtime</a></li>
</ul><br>
</ul>
=end html
=begin html_DE
<a name="I2C_HYT321"></a>
<h3>I2C_HYT321</h3>
<ul>
<a name="I2C_SHT21"></a>
Ermöglicht die Verwendung eines HYT321 I2C Feuchtesensors von <a href="www.sensirion.com">Sensirion</a>.
I2C-Botschaften werden über ein I2C Interface Modul wie beispielsweise das <a href="#RPII2C">RPII2C</a>, <a href="#FRM">FRM</a>
oder <a href="#NetzerI2C">NetzerI2C</a> gesendet. Daher muss dieses vorher definiert werden.<br>
<b>Das Attribut IODev muss definiert sein.</b><br>
<a name="I2C_SHT21Define"></a><br>
<b>Define</b>
<ul>
<code>define <name> I2C_SHT21 [<I2C Address>]</code><br>
Der Wert <code><I2C Address></code> ist ein zweistelliger Hex-Wert<br>
</ul>
<a name="I2C_SHT21Set"></a>
<b>Set</b>
<ul>
<code>set <name> readValues</code><br>
Aktuelle Temperatur und Feuchte Werte vom Sensor lesen.<br><br>
</ul>
<a name="I2C_SHT21Attr"></a>
<b>Attribute</b>
<ul>
<li>poll_interval<br>
Aktualisierungsintervall aller Werte in Minuten.<br>
Standard: 5, gültige Werte: 1,2,5,10,20,30<br><br>
</li>
<li>roundHumidityDecimal<br>
Anzahl Dezimalstellen für den Feuchtewert<br>
Standard: 1, gültige Werte: 0 1 2<br><br>
</li>
<li>roundTemperatureDecimal<br>
Anzahl Dezimalstellen für den Temperaturwert<br>
Standard: 1, gültige Werte: 0,1,2<br><br>
</li>
<li><a href="#IODev">IODev</a></li>
<li><a href="#do_not_notify">do_not_notify</a></li>
<li><a href="#showtime">showtime</a></li>
</ul><br>
</ul>
=end html_DE
=cut