# $Id$
#################################################################################
# 46_TRX_ELSE.pm
#
# FHEM module unkown RFXtrx433 messages
#
# Copyright (C) 2012-2016 Willi Herzig
#	  Maintenance since 2018 by KernSani
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
# 
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
#
# The GNU General Public License may also be found at http://www.gnu.org/licenses/gpl-2.0.html .
###################################
#
# values for "set global verbose"
# 4: log unknown protocols
# 5: log decoding hexlines for debugging
#
##############################################################################
#
#	CHANGELOG
#	
#	02.04.2018	support for vair CO2 sensors (forum #67734) -Thanks to vbs
#	29.03.2018	Summary for Commandref
#
#
##############################################################################package main;

use strict;
use warnings;

my $time_old = 0;

my $DOT = q{_};

sub
TRX_ELSE_Initialize($)
{
  my ($hash) = @_;

  $hash->{Match}     = "^..(0[0-9a-f]|1[a-f]|2[1-9a-f]|3[0-9a-f]|4[1-9a-d]|4f|53|59|5e|5f|6[0-9a-f]|70|7[2-9a-f]|[8-9a-f][0-9a-f]).*";
  $hash->{DefFn}     = "TRX_ELSE_Define";
  $hash->{UndefFn}   = "TRX_ELSE_Undef";
  $hash->{ParseFn}   = "TRX_ELSE_Parse";
  $hash->{AttrList}  = "IODev ignore:1,0 do_not_notify:1,0 ".
                       $readingFnAttributes;

  Log3 $hash, 5, "TRX_ELSE_Initialize() Initialize";
}

#####################################
sub
TRX_ELSE_Define($$)
{
  my ($hash, $def) = @_;
  my @a = split("[ \t][ \t]*", $def);

  my $a = int(@a);

  return "wrong syntax: define <name> TRX_ELSE code" if(int(@a) != 3);

  my $name = $a[0];
  my $code = $a[2];

  my $device_name = "TRX_UNKNOWN".$DOT.$code;

  $hash->{CODE} = $code;
  $modules{TRX_ELSE}{defptr}{$device_name} = $hash;
  AssignIoPort($hash);

  return undef;
}

#####################################
sub
TRX_ELSE_Undef($$)
{
  my ($hash, $name) = @_;
  delete($modules{TRX_ELSE}{defptr}{$name});
  return undef;
}

sub
TRX_ELSE_Parse($$)
{
  my ($hash, $msg) = @_;

  my $time = time();
  if ($time_old ==0) {
  	Log3 $hash, 5, "TRX_ELSE_Parse() decoding delay=0 hex=$msg";
  } else {
  	my $time_diff = $time - $time_old ;
  	Log3 $hash, 5, "TRX_ELSE_Parse() decoding delay=$time_diff hex=$msg";
  }
  $time_old = $time;

  # convert to binary
  my $bin_msg = pack('H*', $msg);
  Log3 $hash, 5, "TRX_ELSE_Parse() 2 hex=$msg";

  # convert string to array of bytes. Skip length byte
  my @rfxcom_data_array = ();
  foreach (split(//, substr($bin_msg,1))) {
    push (@rfxcom_data_array, ord($_) );
  }

  my $num_bytes = ord(substr($bin_msg,0,1));

  if ($num_bytes < 4) {
    return;
  }

  my $type = $rfxcom_data_array[0];

  Log3 $hash, 5, "TRX_ELSE_Parse() num_bytes=$num_bytes hex=$msg type=$type";
  my $res = "";
  if ($type == 0x02) {
	my $subtype = $rfxcom_data_array[1];
	my $msg = $rfxcom_data_array[3];
	if (($msg != 0x00) && ($msg != 0x01)) {
  		Log3 $hash, 1, "TRX_ELSE_Parse() error transmit NACK=".sprintf("%02x",$msg);
	} 
  	return "";
  } 

  my $type_hex = sprintf("%02x", $type);

  my $device_name = "TRX".$DOT."UNKNOWN".$DOT.$type_hex;

  my $def = $modules{TRX_ELSE}{defptr}{$device_name};
  if (!$def) {
	Log3 $hash, 3, "TRX_ELSE: Unknown device $device_name, please define it";
    	return "UNDEFINED $device_name TRX_ELSE $type_hex";

  }
  my $name = $def->{NAME};
  return "" if(IsIgnored($name));

  readingsBeginUpdate($def);

  my $current = $msg;
  #my $sensor = "hexline";
  #readingsBulkUpdate($def, $sensor, $current);

  readingsBulkUpdate($def, "state", $current);

  readingsEndUpdate($def, 1);

  return $name;
}

1;

=pod
=item device
=item summary    unhandled messages from TRX
=item summary_DE unbekannte Nachrichten von TRX
=begin html


<a name="TRX_ELSE"></a>
<h3>TRX_ELSE</h3>
<ul>
  The TRX_ELSE module is invoked by TRX if a code is received by RFXCOM RFXtrx433 RF receiver that is currently not handled by a TRX_-Module. You need to define an RFXtrx433 receiver first. 
See <a href="#TRX">TRX</a>.
  <br>
  <a name="TRX_SECURITYdefine"></a>
  <br>
  <b>Define</b>
  <ul>
    <code>define &lt;name&gt; TRX_ELSE &lt;hextype&gt;</code> <br>
    <br>
    <code>&lt;hextype&gt;</code>
    <ul>
      specifies the hexvalue (00 - ff) of the type received by the RFXtrx433 transceiver. <br>
    </ul>
    <br>
      Example: <br>
    	<code>define TRX_UNKNOWN_9A TRX_ELSE 9A</code>
      <br>
  </ul>
  <br>
</ul>

=end html
=cut