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338 lines
10 KiB
Perl
Executable File
338 lines
10 KiB
Perl
Executable File
##############################################
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package main;
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use strict;
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use warnings;
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my %defptr;
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#####################################
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sub
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KS300_Initialize($)
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{
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my ($hash) = @_;
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# Message is like
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# 810d04f94027a00171212730000008
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# 81 0d 04 f9 4027a00171 212730000008
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$hash->{Match} = "^810d04..4027a001";
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$hash->{DefFn} = "KS300_Define";
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$hash->{UndefFn} = "KS300_Undef";
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$hash->{ParseFn} = "KS300_Parse";
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$hash->{AttrList} = "IODev do_not_notify:0,1 showtime:0,1 model:ks300 loglevel:0,1 rainadjustment:0,1";
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}
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#####################################
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sub
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KS300_Define($$)
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{
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my ($hash, $def) = @_;
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my @a = split("[ \t][ \t]*", $def);
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return "wrong syntax: define <name> KS300 <code> " .
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"[ml/raincounter] [wind-factor]" if(int(@a) < 3 || int(@a) > 5);
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$a[2] = lc($a[2]);
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return "Define $a[0]: wrong CODE format: specify a 4 digit hex value"
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if($a[2] !~ m/^[a-f0-9][a-f0-9][a-f0-9][a-f0-9]$/);
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$hash->{CODE} = $a[2];
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my $rainunit = ((int(@a) > 3) ? $a[3] : 255);
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my $windunit = ((int(@a) > 4) ? $a[4] : 1.0);
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$hash->{CODE} = $a[2];
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$hash->{RAINUNIT} = $rainunit;
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$hash->{WINDUNIT} = $windunit;
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$defptr{$a[2]} = $hash;
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AssignIoPort($hash);
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return undef;
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}
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#####################################
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sub
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KS300_Undef($$)
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{
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my ($hash, $name) = @_;
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delete($defptr{$hash->{CODE}});
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return undef;
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}
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#####################################
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sub
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KS300_Parse($$)
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{
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my ($hash,$msg) = @_;
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###############################
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# 1 2
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#0123456789012345 67890123456789
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#
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#810d04f94027a001 71212730000008
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###############################
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my @a = split("", $msg);
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##########################
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# I've seldom (1 out of 700) seen messages of length 10 and 11 with correct
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# CRC, they seem to contain partial data (e.g. temp/wind/hum but not rain)
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# They are suppressed as of now.
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if(hex($a[3]) != 13) {
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Log 4, "Strange KS300 message received, won't decode ($msg)";
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return "";
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}
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if(int(keys %defptr)) {
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my @arr = keys(%defptr); # No code is known yet
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my $dev = shift(@arr);
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my $def = $defptr{$dev};
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my $haverain = 0;
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my $name= $def->{NAME};
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my @v;
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my @txt = ( "rain_raw", "rain", "wind", "humidity", "temperature",
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"israining", "unknown1", "unknown2", "unknown3","rain_now");
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my @sfx = ( "(counter)", "(l/m2)", "(km/h)", "", "",
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"(yes/no)", "","","","");
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my %repchanged = ("rain"=>1, "wind"=>1, "humidity"=>1, "temperature"=>1,
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"israining"=>1, "rain_diff" =>1);
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# counter for the change hash
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my $n= 1; # 0 is STATE and will b explicitely set
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# time
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my $tm = TimeNow();
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my $tsecs= time(); # number of non-leap seconds since January 1, 1970, UTC
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# The next instr wont work for empty hashes, so we init it now
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$def->{READINGS}{$txt[0]}{VAL} = 0 if(!$def->{READINGS});
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my $r = $def->{READINGS};
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# preset current $rain_raw
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$v[0] = hex("$a[28]$a[27]$a[26]");
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my $rain_raw= $v[0];
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# get previous rain_raw
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my $rain_raw_prev= $rain_raw;
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if(defined($r->{rain_raw})) {
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($rain_raw_prev, undef)= split(" ", $r->{rain_raw}{VAL}); # cut off "(counter)"
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};
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# unadjusted value as default
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my $rain_raw_adj= $rain_raw;
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# get previous rain_raw_adj
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my $rain_raw_adj_prev= $rain_raw;
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if(defined($r->{rain_raw_adj})) {
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$rain_raw_adj_prev= $r->{rain_raw_adj}{VAL};
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};
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if(defined($attr{$name}) &&
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defined($attr{$name}{"rainadjustment"}) &&
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($attr{$name}{"rainadjustment"}>0)) {
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# The rain values delivered by my KS300 randomly switch between two
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# different values. The offset between the two values follows no
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# identifiable principle. It is even unclear whether the problem is
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# caused by KS300 or by FHZ1300. ELV denies any problem with the KS300.
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# The problem is known to several people. For instance, see
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# http://www.ipsymcon.de/forum/showthread.php?t=3303&highlight=ks300+regen&page=3
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# The following code detects and automatically corrects these offsets.
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my $rain_raw_ofs;
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my $rain_raw_ofs_prev;
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my $tsecs_prev;
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# get previous offet
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if(defined($r->{rain_raw_ofs})) {
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$rain_raw_ofs_prev= $r->{rain_raw_ofs}{VAL};
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} else{
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$rain_raw_ofs_prev= 0;
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}
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# the current offset is the same, but this may change later
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$rain_raw_ofs= $rain_raw_ofs_prev;
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# get previous tsecs
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if(defined($r->{tsecs})) {
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$tsecs_prev= $r->{tsecs}{VAL};
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} else{
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$tsecs_prev= 0; # 1970-01-01
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}
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# detect error condition
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# delta is negative or delta is too large
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# see http://de.wikipedia.org/wiki/Niederschlagsintensität#Niederschlagsintensit.C3.A4t
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# during a thunderstorm in middle europe, 50l/m^2 rain may fall per hour
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# 50l/(m^2*h) correspond to 200 ticks/h
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# Since KS300 sends every 2,5 minutes, a maximum delta of 8 ticks would
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# be reasonable. The observed deltas are in most cases 1 or 2 orders
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# of magnitude larger.
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# The code also handles counter resets after battery replacement
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my $rain_raw_delta= $rain_raw- $rain_raw_prev;
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if($tsecs!= $tsecs_prev) { # avoids a rare but relevant condition
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my $thours_delta= ($tsecs- $tsecs_prev)/3600.0; # in hours
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my $rain_raw_per_hour= $rain_raw_delta/$thours_delta;
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if(($rain_raw_delta<0) || ($rain_raw_per_hour> 200.0)) {
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$rain_raw_ofs= $rain_raw_ofs_prev-$rain_raw_delta;
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# If the switch in the tick count occurs simultaneously with an
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# increase due to rain, the tick is lost. We therefore assume that
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# offsets between -5 and 0 are indeed rain.
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if(($rain_raw_ofs>=-5) && ($rain_raw_ofs<0)) { $rain_raw_ofs= 0; }
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$r->{rain_raw_ofs}{TIME} = $tm;
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$r->{rain_raw_ofs}{VAL} = $rain_raw_ofs;
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$def->{CHANGED}[$n++] = "rain_raw_ofs: $rain_raw_ofs";
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}
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}
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$rain_raw_adj= $rain_raw+ $rain_raw_ofs;
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}
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# remember tsecs
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$r->{tsecs}{TIME} = $tm;
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$r->{tsecs}{VAL} = "$tsecs";
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# remember rain_raw_adj
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$r->{rain_raw_adj}{TIME} = $tm;
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$r->{rain_raw_adj}{VAL} = $rain_raw_adj;
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# KS300 has a sensor which detects any drop of rain and immediately
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# sends out the israining message. The sensors consists of two parallel
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# strips of metal separated by a small gap. The rain bridges the gap
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# and closes the contact. If the KS300 pole is not perfectly vertical the
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# drop runs along only one side and the contact is not closed. To get the
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# israining information anyway, the respective flag is also set when the
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# a positive amount of rain is detected.
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$haverain = 1 if($rain_raw_adj != $rain_raw_adj_prev);
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$v[1] = sprintf("%0.1f", $rain_raw_adj * $def->{RAINUNIT} / 1000);
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$v[2] = sprintf("%0.1f", ("$a[25]$a[24].$a[23]"+0) * $def->{WINDUNIT});
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$v[3] = "$a[22]$a[21]" + 0;
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$v[4] = "$a[20]$a[19].$a[18]" + 0; $v[4] = "-$v[4]" if($a[17] eq "7");
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$v[4] = sprintf("%0.1f", $v[4]);
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$v[5] = ((hex($a[17]) & 0x2) || $haverain) ? "yes" : "no";
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$v[6] = $a[29];
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$v[7] = $a[16];
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$v[8] = $a[17];
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if($v[1]){ # rain diff
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my $rain_old = $def->{READINGS}{'rain'}{VAL};
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$rain_old =~ s/[^0123456789.]//g;
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$v[9] = $v[1] - $rain_old;
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} else {
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$v[9] = 0;
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}
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# Negative temp
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$v[4] = -$v[4] if($v[8] & 8);
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Log GetLogLevel($def->{NAME},4), "KS300 $dev: $msg";
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my $max = int(@v);
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# For logging/summary
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my $val = "T: $v[4] H: $v[3] W: $v[2] R: $v[1] IR: $v[5]";
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$def->{STATE} = $val;
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$def->{CHANGED}[0] = $val;
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for(my $i = 0; $i < $max; $i++) {
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$r->{$txt[$i]}{TIME} = $tm;
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$val = "$v[$i] $sfx[$i]";
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$r->{$txt[$i]}{VAL} = $val;
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$def->{CHANGED}[$n++] = "$txt[$i]: $val"
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if(defined($repchanged{$txt[$i]}));
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}
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###################################
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# AVG computing
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if(!$r->{cum_day}) {
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$r->{cum_day}{VAL} = "$tm T: 0 H: 0 W: 0 R: $v[1]";
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$r->{avg_day}{VAL} = "T: $v[4] H: $v[3] W: $v[2] R: $v[1]";
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} else {
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my @cv = split(" ", $r->{cum_day}{VAL});
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my @cd = split("[ :-]", $r->{cum_day}{TIME});
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my $csec = 3600*$cd[3] + 60*$cd[4] + $cd[5]; # Sec of last reading
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my @d = split("[ :-]", $tm);
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my $sec = 3600*$d[3] + 60*$d[4] + $d[5]; # Sec now
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my @sd = split("[ :-]", "$cv[0] $cv[1]");
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my $ssec = 3600*$sd[3] + 60*$sd[4] + $sd[5]; # Sec at start of day
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my $difft = $sec - $csec;
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$difft += 86400 if($d[2] != $cd[2]); # Sec since last reading
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my $t = $cv[3] + $difft * $v[4];
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my $h = $cv[5] + $difft * $v[3];
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my $w = $cv[7] + $difft * $v[2];
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my $e = $cv[9];
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$r->{cum_day}{VAL} = "$cv[0] $cv[1] T: $t H: $h W: $w R: $e";
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$difft = $sec - $ssec;
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$difft += 86400 if($d[2] != $sd[2]); # Sec since last reading
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$t /= $difft; $h /= $difft; $w /= $difft; $e = $v[1] - $cv[9];
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$r->{avg_day}{VAL} =
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sprintf("T: %.1f H: %d W: %.1f R: %.1f", $t, $h, $w, $e);
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if($d[2] != $sd[2]) { # Day changed, report it
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$def->{CHANGED}[$n++] = "avg_day $r->{avg_day}{VAL}";
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$r->{cum_day}{VAL} = "$tm T: 0 H: 0 W: 0 R: $v[1]";
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if(!$r->{cum_month}) { # Check the month
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$r->{cum_month}{VAL} = "1 $r->{avg_day}{VAL}";
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$r->{avg_month}{VAL} = $r->{avg_day}{VAL};
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} else {
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my @cmv = split(" ", $r->{cum_month}{VAL});
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$t += $cmv[2]; $w += $cmv[4]; $h += $cmv[6];
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$cmv[0]++;
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$r->{cum_month}{VAL} =
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sprintf("%d T: %.1f H: %d W: %.1f R: %.1f",
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$cmv[0], $t, $h, $w, $cmv[8]+$e);
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$r->{avg_month}{VAL} =
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sprintf("T: %.1f H: %d W: %.1f R: %.1f",
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$t/$cmv[0], $h/$cmv[0], $w/$cmv[0], $cmv[8]+$e);
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if($d[1] != $sd[1]) { # Month changed, report it
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$def->{CHANGED}[$n++] = "avg_month $r->{avg_month}{VAL}";
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$r->{cum_month}{VAL} = "0 T: 0 H: 0 W: 0 R: 0";
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}
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}
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$r->{cum_month}{TIME} = $r->{avg_month}{TIME} = $tm;
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}
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}
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$r->{cum_day}{TIME} = $r->{avg_day}{TIME} = $tm;
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# AVG computing
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###################################
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return $name;
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} else {
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Log 4, "KS300 detected: $msg";
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}
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return "";
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}
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1;
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