mirror of
https://github.com/fhem/fhem-mirror.git
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910 lines
29 KiB
Perl
Executable File
910 lines
29 KiB
Perl
Executable File
########################################################################################
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#
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# OWTHERM.pm
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#
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# FHEM module to commmunicate with 1-Wire temperature sensors DS1820, DS18S20, DS18B20, DS1822
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#
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# Prof. Dr. Peter A. Henning
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#
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# $Id$
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#
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# Disclaimer: No code of the former OWTEMP module is contained here
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#
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########################################################################################
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#
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# define <name> OWTHERM [<model>] <ROM_ID> [interval]
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#
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# where <name> may be replaced by any name string
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#
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# <model> is a 1-Wire device type. If omitted, we assume this to be an
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# DS1820 temperature sensor
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# Currently allowed values are DS1820, DS18B20, DS1822
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# <ROM_ID> is a 12 character (6 byte) 1-Wire ROM ID
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# without Family ID, e.g. A2D90D000800
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# [interval] is an optional query interval in seconds
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#
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# get <name> id => OW_FAMILY.ROM_ID.CRC
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# get <name> present => 1 if device present, 0 if not
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# get <name> interval => query interval
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# get <name> temperature => temperature measurement
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# get <name> alarm => alarm temperature settings
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#
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# set <name> interval => set period for measurement
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# set <name> tempLow => lower alarm temperature setting
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# set <name> tempHigh => higher alarm temperature setting
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#
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# Additional attributes are defined in fhem.cfg
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# Note: attributes "tempXXXX" are read during every update operation.
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#
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# attr <name> stateAL "<string>" = character string for denoting low alarm condition, default is down triangle
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# attr <name> stateAH "<string>" = character string for denoting high alarm condition, default is up triangle
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# attr <name> tempOffset <float> = temperature offset in degree Celsius added to the raw temperature reading
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# attr <name> tempUnit <string> = unit of measurement, e.g. Celsius/Kelvin/Fahrenheit or C/K/F, default is Celsius
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# attr <name> tempLow <float> = value for low alarm
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# attr <name> tempHigh <float> = value for high alarm
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#
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########################################################################################
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#
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# This programm is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# The GNU General Public License can be found at
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# http://www.gnu.org/copyleft/gpl.html.
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# A copy is found in the textfile GPL.txt and important notices to the license
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# from the author is found in LICENSE.txt distributed with these scripts.
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#
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# This script is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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########################################################################################
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package main;
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use vars qw{%attr %defs};
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use strict;
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use warnings;
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sub Log($$);
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#-- temperature globals - always the raw values from the device
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my $owg_temp = 0;
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my $owg_th = 0;
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my $owg_tl = 0;
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#-- variables for display strings
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my $stateal;
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my $stateah;
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my %gets = (
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"id" => "",
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"present" => "",
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"interval" => "",
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"temperature" => "",
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"alarm" => ""
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);
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my %sets = (
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"interval" => "",
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"tempHigh" => "",
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"tempLow" => ""
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);
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my %updates = (
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"present" => "",
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"temperature" => "",
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"alarm" => ""
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);
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########################################################################################
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#
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# The following subroutines are independent of the bus interface
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#
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# Prefix = OWTHERM
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#
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########################################################################################
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#
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# OWTHERM_Initialize
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#
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# Parameter hash = hash of device addressed
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#
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########################################################################################
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sub OWTHERM_Initialize ($) {
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my ($hash) = @_;
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$hash->{DefFn} = "OWTHERM_Define";
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$hash->{UndefFn} = "OWTHERM_Undef";
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$hash->{GetFn} = "OWTHERM_Get";
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$hash->{SetFn} = "OWTHERM_Set";
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#tempOffset = a temperature offset added to the temperature reading for correction
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#tempUnit = a unit of measure: C/F/K
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$hash->{AttrList}= "IODev do_not_notify:0,1 showtime:0,1 model:DS1820,DS18B20,DS1822 loglevel:0,1,2,3,4,5 ".
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"event-on-update-reading event-on-change-reading ".
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"stateAL stateAH ".
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"tempOffset tempUnit:C,Celsius,F,Fahrenheit,K,Kelvin ".
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"tempLow tempHigh";
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}
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########################################################################################
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#
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# OWTHERM_Define - Implements DefFn function
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#
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# Parameter hash = hash of device addressed, def = definition string
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#
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########################################################################################
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sub OWTHERM_Define ($$) {
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my ($hash, $def) = @_;
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# define <name> OWTHERM [<model>] <id> [interval]
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# e.g.: define flow OWTHERM 525715020000 300
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my @a = split("[ \t][ \t]*", $def);
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my ($name,$model,$fam,$id,$crc,$interval,$ret);
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my $tn = TimeNow();
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#-- default
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$name = $a[0];
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$interval = 300;
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$ret = "";
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#-- check syntax
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return "OWTHERM: Wrong syntax, must be define <name> OWTHERM [<model>] <id> [interval]"
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if(int(@a) < 2 || int(@a) > 6);
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#-- check if this is an old style definition, e.g. <model> is missing
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my $a2 = $a[2];
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my $a3 = defined($a[3]) ? $a[3] : "";
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if( ($a2 eq "none") || ($a3 eq "none") ) {
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return "OWTHERM: ID = none is obsolete now, please redefine";
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} elsif( $a2 =~ m/^[0-9|a-f|A-F]{12}$/ ) {
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$model = "DS1820";
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$id = $a[2];
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if(int(@a)>=4) { $interval = $a[3]; }
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Log 1, "OWTHERM: Parameter [alarminterval] is obsolete now - must be set with I/O-Device"
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if(int(@a) == 5);
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} elsif( $a3 =~ m/^[0-9|a-f|A-F]{12}$/ ) {
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$model = $a[2];
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$id = $a[3];
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if(int(@a)>=5) { $interval = $a[4]; }
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Log 1, "OWTHERM: Parameter [alarminterval] is obsolete now - must be set with I/O-Device"
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if(int(@a) == 6);
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} else {
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return "OWTHERM: $a[0] ID $a[2] invalid, specify a 12 digit value";
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}
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#-- 1-Wire ROM identifier in the form "FF.XXXXXXXXXXXX.YY"
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# FF = family id follows from the model
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# YY must be determined from id
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if( $model eq "DS1820" ){
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$fam = "10";
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CommandAttr (undef,"$name model DS1820");
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}elsif( $model eq "DS1822" ){
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$fam = "22";
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CommandAttr (undef,"$name model DS1822");
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}elsif( $model eq "DS18B20" ){
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$fam = "28";
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CommandAttr (undef,"$name model DS18B20");
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}else{
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return "OWTHERM: Wrong 1-Wire device model $model";
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}
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#-- determine CRC Code - only if this is a direct interface
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$crc = defined($hash->{IODev}->{INTERFACE}) ? sprintf("%02x",OWX_CRC($fam.".".$id."00")) : "00";
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#-- define device internals
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$hash->{ALARM} = 0;
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$hash->{OW_ID} = $id;
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$hash->{OW_FAMILY} = $fam;
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$hash->{PRESENT} = 0;
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$hash->{ROM_ID} = $fam.".".$id.$crc;
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$hash->{INTERVAL} = $interval;
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#-- Couple to I/O device, exit if not possible
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AssignIoPort($hash);
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if( !defined($hash->{IODev}->{NAME}) | !defined($hash->{IODev}) | !defined($hash->{IODev}->{PRESENT}) ){
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return "OWSWITCH: Warning, no 1-Wire I/O device found for $name.";
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}
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if( $hash->{IODev}->{PRESENT} != 1 ){
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return "OWSWITCH: Warning, 1-Wire I/O device ".$hash->{IODev}->{NAME}." not present for $name.";
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}
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$modules{OWTHERM}{defptr}{$id} = $hash;
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#--
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readingsSingleUpdate($hash,"state","defined",1);
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Log 3, "OWTHERM: Device $name defined.";
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#-- Start timer for initialization in a few seconds
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InternalTimer(time()+10, "OWTHERM_InitializeDevice", $hash, 0);
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#-- Start timer for updates
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InternalTimer(time()+$hash->{INTERVAL}, "OWTHERM_GetValues", $hash, 0);
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return undef;
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}
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########################################################################################
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#
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# OWTHERM_InitializeDevice - delayed setting of initial readings and channel names
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#
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# Parameter hash = hash of device addressed
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#
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########################################################################################
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sub OWTHERM_InitializeDevice($) {
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my ($hash) = @_;
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my $name = $hash->{NAME};
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my @args;
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#-- unit attribute defined ?
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$hash->{READINGS}{"temperature"}{TYPE} = "temperature";
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#-- Initial readings temperature sensor
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$owg_temp = "";
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$owg_tl = defined($attr{$name}{"tempLow"}) ? $attr{$name}{"tempLow"} : "";
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$owg_th = defined($attr{$name}{"tempHigh"}) ? $attr{$name}{"tempHigh"} : "";
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#-- Output formatting because of reading attributes
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OWTHERM_FormatValues($hash);
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#-- set status
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if ($owg_tl ne ""){
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@args = ($name,"tempLow",$owg_tl);
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OWTHERM_Set($hash,@args);
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}
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if ($owg_th ne ""){
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@args = ($name,"tempHigh",$owg_th);
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OWTHERM_Set($hash,@args);
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}
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}
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########################################################################################
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#
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# OWTHERM_FormatValues - put together various format strings
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#
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# Parameter hash = hash of device addressed, fs = format string
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#
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########################################################################################
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sub OWTHERM_FormatValues($) {
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my ($hash) = @_;
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my $name = $hash->{NAME};
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my ($unit,$offset,$factor,$abbr,$vval,$vlow,$vhigh,$statef);
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my $svalue = "";
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#-- attributes defined ?
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$stateal = defined($attr{$name}{stateAL}) ? $attr{$name}{stateAL} : "▾";
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$stateah = defined($attr{$name}{stateAH}) ? $attr{$name}{stateAH} : "▴";
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$unit = $hash->{READINGS}{"temperature"}{UNIT} = defined($attr{$name}{"tempUnit"}) ? $attr{$name}{"tempUnit"} : "Celsius";
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$offset = defined($attr{$name}{"tempOffset"}) ? $attr{$name}{"tempOffset"} : 0.0 ;
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$factor = 1.0;
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if( $unit eq "Celsius" ){
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$abbr = "°C";
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} elsif ($unit eq "Kelvin" ){
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$abbr = "K";
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$offset += "273.16"
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} elsif ($unit eq "Fahrenheit" ){
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$abbr = "°F";
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$offset = ($offset+32)/1.8;
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$factor = 1.8;
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} else {
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$abbr="?";
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Log 3, "OWTHERM_FormatValues: unknown unit $unit";
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}
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#-- these values are rather complex to obtain, therefore save them in the hash
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$hash->{READINGS}{"temperature"}{UNIT} = $unit;
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$hash->{READINGS}{"temperature"}{UNITABBR} = $abbr;
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$hash->{tempf}{offset} = $offset;
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$hash->{tempf}{factor} = $factor;
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#-- no change in any value if invalid reading
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return if( $owg_temp eq "");
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#-- correct values for proper offset, factor
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$vval = ($owg_temp + $offset)*$factor;
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#-- correct alarm values for proper offset, factor
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$vlow = ($owg_tl + $offset)*$factor;
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$vhigh = ($owg_th + $offset)*$factor;
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#-- formats for output
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$statef = "%5.2f ".$abbr;
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$svalue = "temperature: ".sprintf($statef,$vval);
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#-- Test for alarm condition
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$hash->{ALARM} = 1;
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if( ($vval <= $vlow) && ( $vval >= $vhigh ) ){
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$svalue .= " ".$stateal.$stateah;
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}elsif( $vval <= $vlow ){
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$svalue .= " ".$stateal;
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}elsif( $vval >= $vhigh ){
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$svalue .= " ".$stateah;
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} else {
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$hash->{ALARM} = 0;
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}
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#-- put into READINGS
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readingsBeginUpdate($hash);
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readingsBulkUpdate($hash,"temperature",$vval);
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readingsBulkUpdate($hash,"tempLow",$vlow);
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readingsBulkUpdate($hash,"tempHigh",$vhigh);
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#-- STATE
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readingsBulkUpdate($hash,"state",$svalue);
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readingsEndUpdate($hash,1);
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return $svalue;
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}
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########################################################################################
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#
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# OWTHERM_Get - Implements GetFn function
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#
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# Parameter hash = hash of device addressed, a = argument array
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#
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########################################################################################
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sub OWTHERM_Get($@) {
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my ($hash, @a) = @_;
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my $reading = $a[1];
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my $name = $hash->{NAME};
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my $model = $hash->{OW_MODEL};
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my $value = undef;
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my $ret = "";
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#-- check syntax
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return "OWTHERM: Get argument is missing @a"
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if(int(@a) != 2);
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#-- check argument
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return "OWTHERM: Get with unknown argument $a[1], choose one of ".join(",", sort keys %gets)
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if(!defined($gets{$a[1]}));
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#-- get id
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if($a[1] eq "id") {
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$value = $hash->{ROM_ID};
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return "$name.id => $value";
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}
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#-- Get other values according to interface type
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my $interface= $hash->{IODev}->{TYPE};
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#-- get present
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if($a[1] eq "present" ) {
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#-- OWX interface
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if( $interface eq "OWX" ){
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#-- hash of the busmaster
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my $master = $hash->{IODev};
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$value = OWX_Verify($master,$hash->{ROM_ID});
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$hash->{PRESENT} = $value;
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return "$name.present => $value";
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} else {
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return "OWTHERM: Verification not yet implemented for interface $interface";
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}
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}
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#-- get interval
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if($reading eq "interval") {
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$value = $hash->{INTERVAL};
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return "$name.interval => $value";
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}
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#-- reset presence
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$hash->{PRESENT} = 0;
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#-- OWX interface
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if( $interface eq "OWX" ){
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#-- not different from getting all values ..
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$ret = OWXTHERM_GetValues($hash);
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#-- OWFS interface
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}elsif( $interface eq "OWFS" ){
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$ret = OWFSTHERM_GetValues($hash);
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#-- Unknown interface
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}else{
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return "OWTHERM: Get with wrong IODev type $interface";
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}
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#-- process results
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if( defined($ret) ){
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return "OWTHERM: Could not get values from device $name, return was $ret";
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}
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$hash->{PRESENT} = 1;
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OWTHERM_FormatValues($hash);
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#-- return the special reading
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if ($reading eq "temperature") {
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return "OWTHERM: $name.temperature => ".
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$hash->{READINGS}{"temperature"}{VAL};
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} elsif ($reading eq "alarm") {
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return "OWTHERM: $name.alarm => L ".$hash->{READINGS}{"tempLow"}{VAL}.
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" H ".$hash->{READINGS}{"tempHigh"}{VAL};
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}
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return undef;
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}
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#######################################################################################
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#
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# OWTHERM_GetValues - Updates the readings from device
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#
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# Parameter hash = hash of device addressed
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#
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########################################################################################
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sub OWTHERM_GetValues($@) {
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my $hash = shift;
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my $name = $hash->{NAME};
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my $value = "";
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my $ret = "";
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#-- restart timer for updates
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RemoveInternalTimer($hash);
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InternalTimer(time()+$hash->{INTERVAL}, "OWTHERM_GetValues", $hash, 1);
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#-- reset presence
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$hash->{PRESENT} = 0;
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#-- Get values according to interface type
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my $interface= $hash->{IODev}->{TYPE};
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if( $interface eq "OWX" ){
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#-- max 3 tries
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for(my $try=0; $try<3; $try++){
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$ret = OWXTHERM_GetValues($hash);
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last
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if( !defined($ret) );
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}
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}elsif( $interface eq "OWFS" ){
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$ret = OWFSTHERM_GetValues($hash);
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}else{
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Log 3, "OWTHERM: GetValues with wrong IODev type $interface";
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return 1;
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}
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#-- process results
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if( defined($ret) ){
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Log 3, "OWTHERM: Could not get values from device $name, reason $ret";
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return 1;
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}
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$hash->{PRESENT} = 1;
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$value=OWTHERM_FormatValues($hash);
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Log 5, $value;
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return undef;
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}
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#######################################################################################
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#
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# OWTHERM_Set - Set one value for device
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#
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# Parameter hash = hash of device addressed
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# a = argument string
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#
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########################################################################################
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sub OWTHERM_Set($@) {
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my ($hash, @a) = @_;
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#-- for the selector: which values are possible
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return join(" ", sort keys %sets) if(@a == 2);
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#-- check syntax
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return "OWTHERM: Set needs one parameter"
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if(int(@a) != 3);
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#-- check argument
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return "OWTHERM: Set with unknown argument $a[1], choose one of ".join(",", sort keys %sets)
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if(!defined($sets{$a[1]}));
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#-- define vars
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my $key = $a[1];
|
|
my $value = $a[2];
|
|
my $ret = undef;
|
|
my $name = $hash->{NAME};
|
|
my $model = $hash->{OW_MODEL};
|
|
|
|
#-- set new timer interval
|
|
if($key eq "interval") {
|
|
# check value
|
|
return "OWTHERM: Set with short interval, must be > 1"
|
|
if(int($value) < 1);
|
|
# update timer
|
|
$hash->{INTERVAL} = $value;
|
|
RemoveInternalTimer($hash);
|
|
InternalTimer(gettimeofday()+$hash->{INTERVAL}, "OWTHERM_GetValues", $hash, 1);
|
|
return undef;
|
|
}
|
|
|
|
#-- set tempLow or tempHigh
|
|
my $interface = $hash->{IODev}->{TYPE};
|
|
my $offset = $hash->{tempf}{offset};
|
|
my $factor = $hash->{tempf}{factor};
|
|
|
|
#-- find upper and lower boundaries for given offset/factor
|
|
my $mmin = (-55+$offset)*$factor;
|
|
my $mmax = (125+$offset)*$factor;
|
|
return sprintf("OWTHERM: Set with wrong value $value for $key, range is [%3.1f,%3.1f]",$mmin,$mmax)
|
|
if($value < $mmin || $value > $mmax);
|
|
|
|
#-- seems to be ok, put into the device after correcting for offset and factor
|
|
$a[2] = int($value/$factor-$offset);
|
|
|
|
#-- OWX interface
|
|
if( $interface eq "OWX" ){
|
|
$ret = OWXTHERM_SetValues($hash,@a);
|
|
#-- OWFS interface
|
|
}elsif( $interface eq "OWFS" ){
|
|
$ret = OWFSTHERM_SetValues($hash,@a);
|
|
return $ret
|
|
if(defined($ret));
|
|
} else {
|
|
return "OWTHERM: Set with wrong IODev type $interface";
|
|
}
|
|
|
|
#-- process results - we have to reread the device
|
|
$hash->{PRESENT} = 1;
|
|
OWTHERM_GetValues($hash);
|
|
OWTHERM_FormatValues($hash);
|
|
Log 4, "OWTHERM: Set $hash->{NAME} $key $value";
|
|
|
|
return undef;
|
|
}
|
|
|
|
########################################################################################
|
|
#
|
|
# OWTHERM_Undef - Implements UndefFn function
|
|
#
|
|
# Parameter hash = hash of device addressed
|
|
#
|
|
########################################################################################
|
|
|
|
sub OWTHERM_Undef ($) {
|
|
my ($hash) = @_;
|
|
|
|
delete($modules{OWTHERM}{defptr}{$hash->{OW_ID}});
|
|
RemoveInternalTimer($hash);
|
|
return undef;
|
|
}
|
|
|
|
########################################################################################
|
|
#
|
|
# The following subroutines in alphabetical order are only for a 1-Wire bus connected
|
|
# via OWFS
|
|
#
|
|
# Prefix = OWFSTHERM
|
|
#
|
|
########################################################################################
|
|
#
|
|
# OWFSTHERM_GetValues - Get reading from one device
|
|
#
|
|
# Parameter hash = hash of device addressed
|
|
#
|
|
########################################################################################
|
|
|
|
sub OWFSTHERM_GetValues($)
|
|
{
|
|
my ($hash) = @_;
|
|
|
|
my $ret = OW::get("/uncached/".$hash->{OW_FAMILY}.".".$hash->{OW_ID}."/temperature");
|
|
if( defined($ret) ) {
|
|
$hash->{PRESENT} = 1;
|
|
$owg_temp = $ret;
|
|
$owg_th = OW::get("/uncached/".$hash->{OW_FAMILY}.".".$hash->{OW_ID}."/temphigh");
|
|
$owg_tl = OW::get("/uncached/".$hash->{OW_FAMILY}.".".$hash->{OW_ID}."/templow");
|
|
} else {
|
|
$hash->{PRESENT} = 0;
|
|
$owg_temp = 0.0;
|
|
$owg_th = 0.0;
|
|
$owg_tl = 0.0;
|
|
}
|
|
|
|
return undef;
|
|
}
|
|
|
|
#######################################################################################
|
|
#
|
|
# OWFSTHERM_SetValues - Implements SetFn function
|
|
#
|
|
# Parameter hash = hash of device addressed
|
|
# a = argument array
|
|
#
|
|
########################################################################################
|
|
|
|
sub OWFSTHERM_SetValues($@) {
|
|
my ($hash, @a) = @_;
|
|
|
|
#-- define vars
|
|
my $key = lc($a[1]);
|
|
my $value = $a[2];
|
|
|
|
return OW::put($hash->{OW_FAMILY}.".".$hash->{OW_ID}."/$key",$value);
|
|
}
|
|
|
|
########################################################################################
|
|
#
|
|
# The following subroutines in alphabetical order are only for a 1-Wire bus connected
|
|
# directly to the FHEM server
|
|
#
|
|
# Prefix = OWXTHERM
|
|
#
|
|
########################################################################################
|
|
#
|
|
# OWXTHERM_GetValues - Get reading from one device
|
|
#
|
|
# Parameter hash = hash of device addressed
|
|
#
|
|
########################################################################################
|
|
|
|
sub OWXTHERM_GetValues($) {
|
|
|
|
my ($hash) = @_;
|
|
|
|
my ($i,$j,$k,@data);
|
|
|
|
#-- For default, perform the conversion NOT now
|
|
my $con=1;
|
|
|
|
#-- ID of the device
|
|
my $owx_dev = $hash->{ROM_ID};
|
|
#-- hash of the busmaster
|
|
my $master = $hash->{IODev};
|
|
|
|
#-- check, if the conversion has been called before - only on devices with real power
|
|
if( defined($attr{$hash->{IODev}->{NAME}}{buspower}) && ( $attr{$hash->{IODev}->{NAME}}{buspower} eq "real") ){
|
|
$con=0;
|
|
}
|
|
|
|
#-- if the conversion has not been called before
|
|
if( $con==1 ){
|
|
OWX_Reset($master);
|
|
#-- issue the match ROM command \x55 and the start conversion command
|
|
if( OWX_Complex($master,$owx_dev,"\x44",0) eq 0 ){
|
|
return "$owx_dev not accessible";
|
|
}
|
|
#-- conversion needs some 950 ms - but we may also do it in shorter time !
|
|
select(undef,undef,undef,1.0);
|
|
}
|
|
|
|
#-- NOW ask the specific device
|
|
OWX_Reset($master);
|
|
#-- issue the match ROM command \x55 and the read scratchpad command \xBE
|
|
#-- reading 9 + 1 + 8 data bytes and 1 CRC byte = 19 bytes
|
|
my $res=OWX_Complex($master,$owx_dev,"\xBE",9);
|
|
#Log 1,"OWXTHERM: data length from reading device is ".length($res)." bytes";
|
|
#-- process results
|
|
if( $res eq 0 ){
|
|
return "$owx_dev not accessible in 2nd step";
|
|
}
|
|
|
|
#-- process results
|
|
@data=split(//,substr($res,9));
|
|
return "invalid data length, ".int(@data)." instead of 10 bytes"
|
|
if (@data != 10);
|
|
return "invalid data"
|
|
if (ord($data[8])<=0);
|
|
return "invalid CRC"
|
|
if (OWX_CRC8(substr($res,10,8),$data[9])==0);
|
|
|
|
#-- this must be different for the different device types
|
|
# family = 10 => DS1820, DS18S20
|
|
if( $hash->{OW_FAMILY} eq "10" ) {
|
|
|
|
my $count_remain = ord($data[7]);
|
|
my $count_perc = ord($data[8]);
|
|
my $delta = -0.25 + ($count_perc - $count_remain)/$count_perc;
|
|
|
|
my $lsb = ord($data[1]);
|
|
my $msb = 0;
|
|
my $sign = ord($data[2]) & 255;
|
|
|
|
#-- test with -25 degrees
|
|
#$lsb = 12*16+14;
|
|
#$sign = 1;
|
|
#$delta = 0;
|
|
|
|
#-- 2's complement form = signed bytes
|
|
$owg_temp = int($lsb/2) + $delta;
|
|
if( $sign !=0 ){
|
|
$owg_temp = -128+$owg_temp;
|
|
}
|
|
|
|
$owg_th = ord($data[3]) > 127 ? 128-ord($data[3]) : ord($data[3]);
|
|
$owg_tl = ord($data[4]) > 127 ? 128-ord($data[4]) : ord($data[4]);
|
|
|
|
return undef;
|
|
|
|
} elsif ( ($hash->{OW_FAMILY} eq "22") || ($hash->{OW_FAMILY} eq "28") ) {
|
|
|
|
my $lsb = ord($data[1]);
|
|
my $msb = ord($data[2]) & 7;
|
|
my $sign = ord($data[2]) & 248;
|
|
|
|
#-- test with -55 degrees
|
|
#$lsb = 9*16;
|
|
#$sign = 1;
|
|
#$msb = 7;
|
|
|
|
#-- 2's complement form = signed bytes
|
|
$owg_temp = $msb*16+ $lsb/16;
|
|
if( $sign !=0 ){
|
|
$owg_temp = -128+$owg_temp;
|
|
}
|
|
$owg_th = ord($data[3]) > 127 ? 128-ord($data[3]) : ord($data[3]);
|
|
$owg_tl = ord($data[4]) > 127 ? 128-ord($data[4]) : ord($data[4]);
|
|
|
|
return undef;
|
|
|
|
} else {
|
|
return "OWXTHERM: Unknown device family $hash->{OW_FAMILY}\n";
|
|
}
|
|
}
|
|
|
|
#######################################################################################
|
|
#
|
|
# OWXTHERM_SetValues - Implements SetFn function
|
|
#
|
|
# Parameter hash = hash of device addressed
|
|
# a = argument array
|
|
#
|
|
########################################################################################
|
|
|
|
sub OWXTHERM_SetValues($@) {
|
|
my ($hash, @a) = @_;
|
|
|
|
my ($i,$j,$k);
|
|
|
|
my $name = $hash->{NAME};
|
|
#-- ID of the device
|
|
my $owx_dev = $hash->{ROM_ID};
|
|
#-- hash of the busmaster
|
|
my $master = $hash->{IODev};
|
|
|
|
#-- define vars
|
|
my $key = $a[1];
|
|
my $value = $a[2];
|
|
$owg_tl = $value if( $key eq "tempLow" );
|
|
$owg_th = $value if( $key eq "tempHigh" );
|
|
|
|
#-- put into 2's complement formed (signed byte)
|
|
my $tlp = $owg_tl < 0 ? 128 - $owg_tl : $owg_tl;
|
|
my $thp = $owg_th < 0 ? 128 - $owg_th : $owg_th;
|
|
|
|
OWX_Reset($master);
|
|
|
|
#-- issue the match ROM command \x55 and the write scratchpad command \x4E,
|
|
# followed by the write EEPROM command \x48
|
|
#
|
|
# so far writing the EEPROM does not work properly.
|
|
# 1. \x48 directly appended to the write scratchpad command => command ok, no effect on EEPROM
|
|
# 2. \x48 appended to match ROM => command not ok.
|
|
# 3. \x48 sent by WriteBytePower after match ROM => command ok, no effect on EEPROM
|
|
|
|
my $select=sprintf("\x4E%c%c\x48",$thp,$tlp);
|
|
my $res=OWX_Complex($master,$owx_dev,$select,0);
|
|
|
|
if( $res eq 0 ){
|
|
return "OWXTHERM: Device $owx_dev not accessible";
|
|
}
|
|
|
|
#DoTrigger($name, undef) if($init_done);
|
|
return undef;
|
|
}
|
|
|
|
1;
|
|
|
|
=pod
|
|
=begin html
|
|
|
|
<a name="OWTHERM"></a>
|
|
<h3>OWTHERM</h3>
|
|
<p>FHEM module to commmunicate with 1-Wire bus digital thermometer devices<br /><br />
|
|
Note:<br /> This is the only 1-Wire module which so far works with both the OWFS and the
|
|
OWX interface module. Please define an <a href="#OWFS">OWFS</a> device or an <a
|
|
href="#OWX">OWX</a> device first. <br />
|
|
</p>
|
|
<h4>Example</h4>
|
|
<p>
|
|
<code>define OWX_T OWTHERM DS18B20 E8D09B030000 300</code>
|
|
<br />
|
|
<code>attr OWX_T tempUnit Kelvin</code>
|
|
<br />
|
|
</p><br />
|
|
<a name="OWTHERMdefine"></a>
|
|
<h4>Define</h4>
|
|
<p>
|
|
<code>define <name> OWTHERM [<model>] <id> [<interval>]</code>
|
|
<br /><br /> Define a 1-Wire digital thermometer device.</p>
|
|
<ul>
|
|
<li>
|
|
<code>[<model>]</code><br /> Defines the thermometer model (and thus 1-Wire family
|
|
id) currently the following values are permitted: </p>
|
|
<ul>
|
|
<li>model DS1820 with family id 10 (default if the model parameter is omitted)</li>
|
|
<li>model DS1822 with family id 22</li>
|
|
<li>model DS18B20 with family id 28</li>
|
|
</ul>
|
|
</li>
|
|
<li>
|
|
<code><id></code>
|
|
<br />12-character unique ROM id of the thermometer device without family id and CRC
|
|
code
|
|
</li>
|
|
<li>
|
|
<code><interval></code>
|
|
<br /> Temperature measurement interval in seconds. The default is 300 seconds.
|
|
</li>
|
|
</ul>
|
|
<a name="OWTHERMset"></a>
|
|
<h4>Set</h4>
|
|
<ul>
|
|
<li><a name="owtherm_interval">
|
|
<code>set <name> interval <int></code></a><br /> Temperature
|
|
measurement intervall in seconds. The default is 300 seconds.</li>
|
|
<li><a name="owtherm_tempHigh">
|
|
<code>set <name> tempHigh <float></code></a>
|
|
<br /> The high alarm temperature (on the temperature scale chosen by the attribute
|
|
value) </li>
|
|
<li><a name="owtherm_tempLow">
|
|
<code>set <name> tempLow <float></code></a>
|
|
<br /> The low alarm temperature (on the temperature scale chosen by the attribute
|
|
value) </li>
|
|
</ul>
|
|
<br />
|
|
<a name="OWTHERMget"></a>
|
|
<h4>Get</h4>
|
|
<ul>
|
|
<li><a name="owtherm_id">
|
|
<code>get <name> id</code></a>
|
|
<br /> Returns the full 1-Wire device id OW_FAMILY.ROM_ID.CRC </li>
|
|
<li><a name="owtherm_present">
|
|
<code>get <name> present</code></a>
|
|
<br /> Returns 1 if this 1-Wire device is present, otherwise 0. </li>
|
|
<li><a name="owtherm_interval2">
|
|
<code>get <name> interval</code></a><br />Returns temperature measurement
|
|
interval in seconds.</li>
|
|
<li><a name="owtherm_temperature">
|
|
<code>get <name> temperature</code></a><br />Obtain the temperature. </li>
|
|
<li><a name="owtherm_alarm">
|
|
<code>get <name> alarm</code></a><br />Obtain the alarm temperature
|
|
values. </li>
|
|
</ul>
|
|
<br />
|
|
<a name="OWTHERMattr"></a>
|
|
<h4>Attributes</h4>
|
|
<ul>
|
|
<li><a name="owtherm_stateAL"><code>attr <name> stateAL <string></code>
|
|
</a>
|
|
<br />character string for denoting low alarm condition, default is down triangle,
|
|
e.g. the code &#x25BE; leading to the sign ▾ </li>
|
|
<li><a name="owtherm_stateAH"><code>attr <name> stateAH <string></code>
|
|
</a>
|
|
<br />character string for denoting high alarm condition, default is upward
|
|
triangle, e.g. the code &#x25B4; leading to the sign ▴ </li>
|
|
<li><a name="owtherm_tempOffset"><code>attr <name> tempOffset <float></code>
|
|
</a>
|
|
<br />temperature offset in °C added to the raw temperature reading. </li>
|
|
<li><a name="owtherm_tempUnit"><code>attr <name> tempUnit
|
|
Celsius|Kelvin|Fahrenheit|C|K|F</code>
|
|
</a>
|
|
<br />unit of measurement (temperature scale), default is Celsius = °C </li>
|
|
<li><a name="owtherm_tempHigh2">
|
|
<code>attr <name> tempHigh <float></code>
|
|
</a>
|
|
<br /> high alarm temperature (on the temperature scale chosen by the attribute
|
|
value). </li>
|
|
<li><a name="owtherm_tempLow2">
|
|
<code>attr <name> tempLow <float></code>
|
|
</a>
|
|
<br /> low alarm temperature (on the temperature scale chosen by the attribute
|
|
value). </li>
|
|
<li>Standard attributes <a href="#alias">alias</a>, <a href="#comment">comment</a>, <a
|
|
href="#event-on-update-reading">event-on-update-reading</a>, <a
|
|
href="#event-on-change-reading">event-on-change-reading</a>, <a href="#room"
|
|
>room</a>, <a href="#eventMap">eventMap</a>, <a href="#loglevel">loglevel</a>,
|
|
<a href="#webCmd">webCmd</a></li>
|
|
</ul>
|
|
|
|
=end html
|
|
=cut
|