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#!/usr/bin/perl
# Part of Dire Wolf APRS Telemetry Toolkit, WB2OSZ, 2015
if ($#ARGV+1 < 2 || $#ARGV+1 > 3) {
print STDERR "A callsign, bit sense string, and optional project title must be provided.\n";
usage();
}
# Separate out call and pad to 9 characters.
$call = shift @ARGV;
$call = substr($call . " ", 0, 9);
if ( ! ($ARGV[0] =~ m/^[01]{8}$/)) {
print STDERR "The bit-sense value must be 8 binary digits.\n";
usage();
}
print ":$call:BITS." . join (',', @ARGV) . "\n";
exit 0;
sub usage ()
{
print STDERR "\n";
print STDERR "telem-bits.pl - Generate BITS message with bit polarity and optional project title.\n";
print STDERR "\n";
print STDERR "Usage: telem-bits.pl call bit-sense [ project-title ]\n";
print STDERR "\n";
print STDERR "Bit-sense is string of 8 binary digits.\n";
print STDERR "If project title contains any spaces, enclose it in quotes.\n";
exit 1;
}
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