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OWX_DS9097 optimize search algorithm
git-svn-id: https://svn.fhem.de/fhem/trunk@6392 2b470e98-0d58-463d-a4d8-8e2adae1ed80
This commit is contained in:
ntruchsess
parent
d58ed5cc88
commit
65693131e4
@ -438,7 +438,6 @@ sub OWX_CRC ($) {
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for(my $i=0; $i<8; $i++){
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$crc8 = $crc8_table[ $crc8 ^ $owx_ROM_ID[$i] ];
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}
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return $crc8;
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} elsif (ref($romid) eq "ARRAY") {
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for(my $i=0; $i<8; $i++){
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$crc8 = $crc8_table[ $crc8 ^ $romid->[$i] ];
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@ -452,9 +451,9 @@ sub OWX_CRC ($) {
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for(my $i=0; $i<7; $i++){
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$crc8 = $crc8_table[ $crc8 ^ $owx_ROM_ID[$i] ];
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}
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return $crc8;
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}
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}
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return $crc8;
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}
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########################################################################################
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#
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@ -190,10 +190,7 @@ sub pt_next ($$) {
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my ($serial,$context,$mode)=@_;
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my $id_bit_number = 1;
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my $rom_byte_number = 0;
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my $rom_byte_mask = 1;
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my $last_zero = 0;
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my ($pt_query,$search_direction);
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my ($pt_query,$search_direction,@search,$query,$result);
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return PT_THREAD(sub {
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my ( $thread ) = @_;
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@ -208,68 +205,116 @@ sub pt_next ($$) {
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#-- Response search data parsing operates bitwise
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while ( $id_bit_number <= 64) {
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#loop until through all ROM bytes 0-7
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$pt_query = $serial->pt_query("11");
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@search = split //, unpack "b64", pack "C8",@{$context->{ROM_ID}};
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#-- bits < LastDiscrepancy are allready known:
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$query = "";
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$result = "";
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if ($context->{LastDiscrepancy} > 0) {
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while ( $id_bit_number < $context->{LastDiscrepancy} ) {
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$query.= "11".$search[$id_bit_number-1];
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$id_bit_number++;
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}
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# $id_bit_number now is equal LastDiscrepancy
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if ($id_bit_number < 65) {
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$query.="111";
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$search[$id_bit_number-1] = 1;
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$id_bit_number++;
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}
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}
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$query.="11" if ($id_bit_number != 57 and $id_bit_number < 65);
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$pt_query = $serial->pt_query($query);
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while (1) {
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PT_WAIT_THREAD($pt_query);
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die $pt_query->PT_CAUSE() if ($pt_query->PT_STATE() == PT_ERROR || $pt_query->PT_STATE() == PT_CANCELED);
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my $ret = $pt_query->PT_RETVAL();
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my ($id_bit,$cmp_id_bit) = split //,$ret;
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if( ($id_bit == 1) && ($cmp_id_bit == 1) ){
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main::Log3 ($serial->{name},5, "no devices present at id_bit_number=$id_bit_number");
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last;
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}
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if ( $id_bit != $cmp_id_bit ){
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$search_direction = $id_bit;
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} else {
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# hä ? if this discrepancy if before the Last Discrepancy
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# on a previous next then pick the same as last time
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if ( $id_bit_number < $context->{LastDiscrepancy} ){
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if (($context->{ROM_ID}->[$rom_byte_number] & $rom_byte_mask) > 0){
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$search_direction = 1;
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} else {
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$search_direction = 0;
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}
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die "unparsable return of query '$ret'" unless ($ret =~ /(1|0)(1|0)$/);
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$result.=$ret;
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last if ( $id_bit_number > 64 );
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if ( $id_bit_number < 65 ) {
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my $id_bit = $1;
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my $cmp_id_bit = $2;
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if( ($id_bit == 1) && ($cmp_id_bit == 1) ){
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main::Log3 ($serial->{name},5, "no devices present at id_bit_number=$id_bit_number");
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last;
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}
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if ( $id_bit != $cmp_id_bit ){
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$search_direction = $id_bit;
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} else {
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# if equal to last pick 1, if not then pick 0
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if ($id_bit_number == $context->{LastDiscrepancy}){
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$search_direction = 1;
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} else {
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$search_direction = 0;
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}
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$search_direction = 0;
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}
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# if 0 was picked then record its position in LastZero
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if ($search_direction == 0){
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$last_zero = $id_bit_number;
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# check for Last discrepancy in family
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if ($last_zero < 9) {
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$context->{LastFamilyDiscrepancy} = $last_zero;
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}
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# set or clear the bit in the ROM byte rom_byte_number
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# with mask rom_byte_mask
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$search[$id_bit_number-1] = $search_direction;
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# serial number search direction write bit
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$serial->bit($search_direction);
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$result.="$search_direction";
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main::Log3 ($serial->{name},5,"id_bit_number: $id_bit_number, search_direction: $search_direction, ROM_ID: ".sprintf("%02X.%02X%02X%02X%02X%02X%02X.%02X",unpack "C8",pack "b64", join "",@search)) if ($main::owx_async_debug);
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$id_bit_number++;
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last if ($id_bit_number > 64);
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$pt_query = $serial->pt_query("11") unless ( $id_bit_number == 57 );
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}
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#bits 57-64 are CRC and can be calculated from bits 1-56
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if ( $id_bit_number == 57 ) {
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my @crc = (0,unpack("C7", pack ("b64", join ("",@search[0..55]))));
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@search[56..63] = split //,unpack "b8",pack "C1",(main::OWX_CRC(\@crc));
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$query = "";
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while ($id_bit_number < 65) {
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$query.= "11".$search[$id_bit_number-1];
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$id_bit_number++;
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}
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$pt_query = $serial->pt_query($query);
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}
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# set or clear the bit in the ROM byte rom_byte_number
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# with mask rom_byte_mask
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if ( $search_direction == 1){
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$context->{ROM_ID}->[$rom_byte_number] |= $rom_byte_mask;
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} else {
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$context->{ROM_ID}->[$rom_byte_number] &= ~$rom_byte_mask;
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}
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# serial number search direction write bit
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$serial->bit($search_direction);
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main::Log3 ($serial->{name},5,"id_bit_number: $id_bit_number, search_direction: $search_direction, LastDiscrepancy: $last_zero ROM_ID: ".sprintf("%02X.%02X%02X%02X%02X%02X%02X.%02X",@{$context->{ROM_ID}})) if ($main::owx_async_debug);
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# increment the byte counter id_bit_number
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# and shift the mask rom_byte_mask
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$id_bit_number++;
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$rom_byte_mask <<= 1;
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#-- if the mask is 0 then go to new rom_byte_number and
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if ($rom_byte_mask == 256){
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$rom_byte_number++;
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$rom_byte_mask = 1;
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}
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}
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die "unexpected length of result: ".length($result).", expected: 192" if (length($result)!=192);
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my $bit_number = 0;
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my @bits = split //,$result;
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my $last_zero = 0;
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my @found = (0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0);
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if ($main::owx_async_debug>2) {
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my @results;
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for (my $i=0;$i<64;$i++) {
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push @results,substr($result,$i*3,3);
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}
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main::Log3 ($serial->{name},5,"result: ".join(":",@results));
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main::Log3 ($serial->{name},5,"bits: ".join(",",@bits));
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main::Log3 ($serial->{name},5,"search: ".join(",",@search));
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}
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while(@bits) {
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my $id_bit = shift @bits;
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my $cmp_id_bit = shift @bits;
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shift @bits;
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if ($id_bit == 1 and $cmp_id_bit == 1) {
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last;
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} elsif ($id_bit == 0 and $cmp_id_bit == 0) {
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if ($search[$bit_number] == 0) {
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$last_zero = $bit_number+1;
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}
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$found[$bit_number] = $search[$bit_number];
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} else {
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$found[$bit_number] = $id_bit;
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}
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$bit_number++;
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}
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@{$context->{ROM_ID}} = unpack "C8", pack "b64", join "",@found;
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$context->{LastDiscrepancy} = $last_zero;
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main::Log3 ($serial->{name},5,"bit_number: $bit_number, LastDiscrepancy: $last_zero, ROM_ID: ".sprintf("%02X.%02X%02X%02X%02X%02X%02X.%02X",@{$context->{ROM_ID}})) if ($main::owx_async_debug);
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PT_END;
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});
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}
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@ -327,7 +327,7 @@ sub get_pt_verify($) {
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$thread->{ROM_ID}->[$i]=hex(substr($devs,2*$i,2));
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}
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#-- reset the search state
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$thread->{LastDiscrepancy} = 64;
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$thread->{LastDiscrepancy} = 65;
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$thread->{LastDeviceFlag} = 0;
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$thread->{LastFamilyDiscrepancy} = 0;
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@ -377,8 +377,11 @@ sub next_response($) {
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#-- character version of device ROM_ID, first byte = family
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my $dev=sprintf("%02X.%02X%02X%02X%02X%02X%02X.%02X",@{$thread->{ROM_ID}});
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#-- mode was to verify presence of a device
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if ($mode eq "verify") {
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main::Log3($self->{name},5, "OWX_SER::Search: device verified $dev");
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#--check if we really found a device
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if( main::OWX_CRC($thread->{ROM_ID})!= 0){
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} elsif( main::OWX_CRC($thread->{ROM_ID})!= 0) {
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#-- reset the search
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main::Log3($self->{name},1, "OWX_SER::Search CRC failed : $dev");
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$thread->{LastDiscrepancy} = 0;
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@ -386,21 +389,14 @@ sub next_response($) {
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$thread->{LastFamilyDiscrepancy} = 0;
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die "OWX_SER::Search CRC failed : $dev";
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}
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#-- for some reason this does not work - replaced by another test, see below
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#if( $self->{LastDiscrepancy}==0 ){
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# $self->{LastDeviceFlag}=1;
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#}
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#--
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if( $thread->{LastDiscrepancy}==$thread->{LastFamilyDiscrepancy} ){
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$thread->{LastFamilyDiscrepancy}=0;
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$thread->{LastFamilyDiscrepancy}=0;
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}
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#-- mode was to verify presence of a device
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if ($mode eq "verify") {
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main::Log3($self->{name},5, "OWX_SER::Search: device verified $dev");
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#-- mode was to discover devices
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} elsif( $mode eq "discover" ) {
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if( $mode eq "discover" ) {
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#-- check families
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my $famfnd=0;
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foreach (@{$self->{fams}}){
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@ -424,7 +420,7 @@ sub next_response($) {
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main::Log3($self->{name},5, "OWX_SER::Search: new device found $dev");
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}
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#-- mode was to discover alarm devices
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} else {
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} elsif ( $mode eq "alarms" ) {
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for(my $i=0;$i<@{$thread->{alarmdevs}};$i++){
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if( $dev eq ${$thread->{alarmdevs}}[$i] ){
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#-- if present, set the last device found flag
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