nes-proj/tools/rftestrx2pcap.pl

105 lines
2.2 KiB
Perl
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#!/usr/bin/perl -w
use Device::SerialPort;
use Term::ReadKey;
use Getopt::Long;
use Time::HiRes qw(usleep gettimeofday);
use strict;
my $filename = '';
my $second = '';
my $term = '/dev/ttyUSB0';
my $baud = '115200';
my $verbose;
GetOptions (
'terminal=s' => \$term,
'baud=s' => \$baud,
);
$| = 1;
# TODO: add help argument
# print "Example usage: rftestrx2pcap.pl -t /dev/ttyS0 -b 9600\n";
# exit;
my $ob = Device::SerialPort->new ($term) or die "Can't start $term\n";
# next test will die at runtime unless $ob
$ob->baudrate($baud);
$ob->parity('none');
$ob->databits(8);
$ob->stopbits(1);
$ob->read_const_time(1000); # 1 second per unfulfilled "read" call
my $str = '';
my ($sec, $usec, $len);
my @frame;
my $magic = 0xa1b2c3d4;
my $major = 2;
my $minor = 4;
my $zone = 0;
my $sig = 0;
my $snaplen = 0xffff;
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my $network = 230; # 802.15.4 no FCS
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my $newpacket = 0;
my $len = 0;
my $file_empty = 1;
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print pack('LSSLLLL',($magic,$major,$minor,$zone,$sig,$snaplen,$network));
while(1) {
my ($count, $c) = $ob->read(1);
if (defined($count) && ($count != 0)) {
$str .= $c;
# match if ends in \n or \r and process line
if(($str =~ /\n$/) ||
($str =~ /\r$/)) {
if($str =~ /^rftest-rx --- len 0x(\w\w)/) {
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#new packet
($sec, $usec) = gettimeofday;
$len = hex($1);
print STDERR "rftestline: $sec $usec $len $str";
$newpacket = 1;
} elsif($str =~ /^\w+/) {
# dataline, write out pcap entry
$str =~ /(.+)/;
chomp $str;
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my @data = split(' ',$1);
# do header if this is a new packet
if($newpacket == 1) {
$newpacket = 0;
print pack('LLLL',($sec,$usec,$len,$len));
print STDERR "new packet: $sec $usec $len " . ($len) . "\n\r";
# This header starts the file
if ($file_empty == 1) {
$file_empty = 0;
}
}
# packet payload (don't start the file with a payload)
if ($file_empty == 0) {
print STDERR "dataline: ";
print STDERR $str . "\n\r";
foreach my $data (@data) {
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print pack ('C',hex($data));
}
}
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}
$str = '';
}
}
}
$ob -> close or die "Close failed: $!\n";
ReadMode 0;
undef $ob; # closes port AND frees memory in perl
exit;