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25 lines
562 B
25 lines
562 B
#!/usr/bin/env perl
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use warnings;
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use strict;
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#
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# Scan all USB devices to find the Model 01's modem device number.
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#
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my @output = qx(/usr/sbin/usbconfig show_ifdrv);
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my $serial_port_number;
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foreach my $line (@output) {
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chomp $line;
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next unless $line =~ m/umodem(\d+):.*Keyboardio Model 01/;
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$serial_port_number = $1;
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}
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die "Can't find Model 01" unless defined($serial_port_number);
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my $serial_port_name = "/dev/cuaU$serial_port_number";
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die "Missing serial port at $serial_port_name" unless -e $serial_port_name;
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print "$serial_port_name\n";
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exit 0;
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