probe usb serial ports

[Biblio-RFID.git] / lib / RFID / Biblio / Reader / Serial.pm

diff --git a/lib/RFID/Biblio/Reader/Serial.pm b/lib/RFID/Biblio/Reader/Serial.pm
index b118fe3..bf89625 100644 (file)
--- a/lib/RFID/Biblio/Reader/Serial.pm
+++ b/lib/RFID/Biblio/Reader/Serial.pm
@@ -33,29 +33,37 @@ sub new {
 
 =cut
 
+our $serial_device;
+
 sub port {
        my $self = shift;
 
        return $self->{port} if defined $self->{port};
 
        my $settings = $self->serial_settings;
-       my $device   = $settings->{device} ||= $ENV{RFID_DEVICE};
-       warn "# settings ",dump $settings;
+       my @devices  = ( $ENV{RFID_DEVICE} );
+       @devices = glob '/dev/ttyUSB*';
 
-       if ( ! $device ) {
-               warn "# no device, serial port not opened\n";
-               return;
-       }
+       warn "# port devices ",dump(@devices);
+
+       foreach my $device ( @devices ) {
 
-       if ( $self->{port} = Device::SerialPort->new( $settings->{device} ) ) {
-               $self->{port}->$_( $settings->{$_} )
-               foreach ( qw/handshake baudrate databits parity stopbits/ );
-       } else {
-               warn "can't open serial port: $!\n";
-               $self->{port} = 0;
+               next if $serial_device->{$device};
+
+               if ( my $port = Device::SerialPort->new($device) ) {
+                       foreach my $opt ( qw/handshake baudrate databits parity stopbits/ ) {
+                               $port->$opt( $settings->{$opt} );
+                       }
+                       warn "found ", ref($self), " $device settings ",dump $settings;
+                       $self->{port} = $port;
+                       $serial_device->{$device} = $port;
+                       last;
+               }
        }
 
-       $self->{port};
+       warn "# serial_device ",dump($serial_device);
+
+       return $self->{port};
 }
 
 1