use FileHandle;
use SCX::CRC;
-our $PACKET_SIZE = 10;
+our $PACKET_SIZE = 9; # 9 bytes + 0x05
our $LOG_ROTATE = 600;
sub new {
log_gen => $log_gen,
log_start => $now,
starttime => $now,
- callback => $callback,
+ track => $track,
bytes => [],
};
die "Read error on $self->{portname}: $!"
if !$bytes_read;
+ my @bytes = unpack("C*", $data);
+
+ push @{ $self->{bytes} }, @bytes;
+ @bytes = @{ $self->{bytes} };
+
+ my @bad_bytes;
+
+ while (@bytes > $PACKET_SIZE) {
+ if ($bytes[0] != 0x55) {
+ push @bad_bytes, shift @bytes;
+ next;
+ }
+ my $cmd = $bytes[1];
+
+ if ($bytes[$PACKET_SIZE] != 0x05
+ || SCX::CRC::digest(@bytes[0..$PACKET_SIZE-2])
+ != $bytes[$PACKET_SIZE-1]) {
+ push @bad_bytes, shift @bytes;
+ next;
+ }
+
+ if (@bad_bytes) { # Report previous bad bytes first
+ $self->log_bytes(\@bad_bytes, "Cannot parse packet");
+ @bad_bytes = ();
+ }
+
+ my @packet = splice @bytes, 0, $PACKET_SIZE+1;
+ my $rv = &{ $self->{callback} }(@packet);
+ $self->log_bytes(@packet, $rv);
+ }
+ $self->log_bad_bytes(\@bad_bytes, "Cannot parse packet");
+
+ @{ $self->{bytes} } = @bytes;
+}
+
+sub log_bytes {
+ my ($self, $bytes, $msg) = @_;
+
+ return if !@$bytes;
+
+ $msg = defined $msg ? ' # ' . $msg : '';
+
my $now = gettimeofday;
+
if ($now - $self->{log_start} >= $LOG_ROTATE) {
close $self->{logfh};
$self->{log_gen} = $self->{log_gen} ? 0 : 1;
$self->{log_start} = $now;
}
- my @bytes = unpack("C*", $data);
-
$self->{logfh}->print(sprintf('% 10.3f', $now - $self->{starttime}),
- (map { sprintf(" %02x", $_) } @bytes),
- "\n");
+ (map { sprintf(" %02x", $_) } @$bytes),
+ $msg, "\n");
+}
- push @{ $self->{bytes} }, @bytes;
- @bytes = @{ $self->{bytes} };
+our %COMMANDS = (
+ 0xAA => \&bus_free_time_packet,
+ 0xCC => \&car_programming_packet,
+ 0xD0 => \&reset_packet,
+ 0xD3 => \&standings_packet,
+ 0xD4 => \&lap_time_packet,
+ 0xD5 => \&race_setup_packet,
+ 0xD6 => \&fuel_level_packet,
+ 0xD7 => \&brake_set_packet,
+ 0xDB => \&qualification_packet,
+ 0xDC => \&end_of_race_packet,
+ 0xDD => \&race_start_packet,
+ 0xDE => \&display_change_packet,
+ 0xEE => \&finish_line_packet,
+ 0xFF => \&controller_status_packet,
+);
- my @bad_bytes;
+sub handle_packet {
+ my ($self, @data) = @_;
- while (@bytes >= $PACKET_SIZE) {
- if ($bytes[0] != 0x55 || $bytes[9] != 0x05
- || SCX::CRC::digest(@bytes[0..7]) != $bytes[8]) {
- push @bad_bytes, shift @bytes;
+ my $cmd = $data[1];
+ my @args = $data[2..7];
+
+ my $sub = $COMMANDS{$cmd};
+ return "Unknown packet"
+ if !defined $sub;
+
+ return &$sub($self, @args);
+}
+
+sub bus_free_time_packet {
+ my ($self, @bytes) = @_;
+
+ my $msg = 'Strange bus free time packet'
+ if $bytes[2] != 0xF0
+ || $bytes[3] != 0xF0
+ || $bytes[4] != 0xF0
+ || $bytes[5] != 0xF0;
+
+ return $msg; # No need to handle this, I think
+}
+
+sub car_programming_packet {
+ my ($self, @bytes) = @_;
+
+ my $msg = 'Strange car programming packet'
+ if $bytes[0] & 0xF8 != 0 || $bytes[0] & 0x07 > 5
+ || $bytes[1] != 0xFE
+ || $bytes[2] != 0xFF
+ || $bytes[3] != 0xFF
+ || $bytes[4] != 0xFF
+ || $bytes[5] != 0xFF;
+
+ return $msg;
+}
+
+sub reset_packet {
+ my ($self, @bytes) = @_;
+
+ my $msg = 'Strange reset packet'
+ if $bytes[0] != 0xFF
+ || $bytes[3] != 0xAA
+ || $bytes[4] != 0xAA
+ || $bytes[5] != 0xAA;
+
+ return $msg; # FIXME - to be implemented
+}
+
+sub standings_packet {
+ my ($self, @bytes) = @_;
+
+ my $msg = 'Strange standings packet'
+ if $bytes[0] & 0x07 > 5
+ || $bytes[1] & 0x07 > 5
+ || $bytes[2] & 0x07 > 5
+ || $bytes[3] & 0x07 > 5
+ || $bytes[4] & 0x07 > 5
+ || $bytes[5] & 0x07 > 5;
+
+ return $msg; # FIXME - to be implemented
+}
+
+sub lap_time_packet {
+ my ($self, @bytes) = @_;
+
+ my $msg = 'Strange lap time packet'
+ if $bytes[0] > 5
+ || $bytes[1] & 0x01
+ || $bytes[2] & 0x01
+ || $bytes[3] & 0xF8 != 0
+ || $bytes[4] & 0x01
+ || $bytes[5] & 0x01;
+
+ return $msg; # FIXME - to be implemented
+}
+
+
+sub race_setup_packet {
+ my ($self, @bytes) = @_;
+
+ my $msg = 'Strange race setup packet'
+ if ($bytes[0] != 0x00 && $bytes[0] != 0xFF)
+ || $bytes[1] & 0xF0
+ || $bytes[2] & 0xF0
+ || $bytes[3] & 0xF0
+ || $bytes[4] != 0xFF
+ || $bytes[5] != 0xFF;
+
+ return $msg; # FIXME - to be implemented
+}
+
+
+sub fuel_level_packet {
+ my ($self, @bytes) = @_;
+
+ my $msg = 'Strange fuel_level packet'
+ if ($bytes[0] >> 4) > 8
+ || $bytes[0] & 0x0F > 8
+ || ($bytes[1] >> 4) > 8
+ || $bytes[1] & 0x0F > 8
+ || ($bytes[2] >> 4) > 8
+ || $bytes[2] & 0x0F > 8
+ || ($bytes[5] != 0xAA && $bytes[5] != 0xFF);
+
+ my @fuel = (
+ $bytes[1] >> 4, $bytes[1] & 0x0f,
+ $bytes[2] >> 4, $bytes[2] & 0x0f,
+ $bytes[3] >> 4, $bytes[3] & 0x0f,
+ );
+
+ for my $car (0..5) {
+ $track->car($car)->set_fuel($fuel[$car]);
+ }
+
+ return $msg;
+}
+
+
+sub brake_set_packet {
+ my ($self, @bytes) = @_;
+
+ return 'Unexpected brake_set packet (should be in the pit lane only)';
+}
+
+
+sub qualification_packet {
+ my ($self, @bytes) = @_;
+
+ my $msg = 'Strange qualification packet'
+ if $bytes[0] & 0xF0
+ || $bytes[1] & 0xF0
+ || $bytes[2] & 0xF0
+ || $bytes[3] > 5
+ || $bytes[4] != 0xFF
+ || $bytes[5] != 0xFF;
+
+ return $msg; # FIXME - to be implemented
+}
+
+
+sub end_of_race_packet {
+ my ($self, @bytes) = @_;
+
+ my $msg = 'Strange end_of_race packet'
+ if $bytes[0] != 0xFF
+ || $bytes[1] != 0xFF
+ || $bytes[2] != 0xFF
+ || $bytes[3] != 0xFF
+ || $bytes[4] != 0xFF
+ || $bytes[5] != 0xFF;
+
+ return $msg; # FIXME - to be implemented
+}
+
+
+sub race_start_packet {
+ my ($self, @bytes) = @_;
+
+ my $msg = 'Strange race_start packet'
+ if $bytes[0] != 0x00
+ || $bytes[1] != 0xAA
+ || $bytes[2] != 0xAA
+ || $bytes[3] != 0xAA
+ || $bytes[4] != 0xAA
+ || $bytes[5] != 0xAA;
+
+ return $msg; # FIXME - to be implemented
+}
+
+
+sub display_change_packet {
+ my ($self, @bytes) = @_;
+
+ my $msg = 'Strange display_change packet'
+ if $bytes[0] & 0xFE
+ || $bytes[1] != 0xFF
+ || $bytes[2] != 0xFF
+ || $bytes[3] != 0xFF
+ || $bytes[4] != 0xFF
+ || $bytes[5] != 0xFF;
+
+ return $msg; # FIXME - to be implemented
+}
+
+
+sub finish_line_packet {
+ my ($self, @bytes) = @_;
+
+ my $fail;
+ for my $byte (@bytes) {
+ $fail = 1
+ if $byte != 0xAA
+ && $byte != 0xE7
+ && $byte != 0xF0
+ && $byte != 0xFE
+ }
+
+ my $msg = 'Strange finish_line packet'
+ if $fail;
+
+ return $msg; # FIXME - to be implemented
+}
+
+
+sub controller_status_packet {
+ my ($self, @bytes) = @_;
+
+ my $fail;
+ for my $byte (@bytes) {
+ $fail = 1
+ if $byte & 0xC0 != 0xC0
+ || $byte & 0x0F > 12
+ }
+
+ my $msg = 'Strange controller_status packet'
+ if $fail;
+
+ my @fuel = (
+ $bytes[1] >> 4, $bytes[1] & 0x0f,
+ $bytes[2] >> 4, $bytes[2] & 0x0f,
+ $bytes[3] >> 4, $bytes[3] & 0x0f,
+ );
+
+ for my $car (0..5) {
+ my $byte = $bytes[$car];
+
+ if ($byte == 0xAA) {
+ $track->car($car)->set_throttle(undef);
next;
}
- if (@bad_bytes) {
- $self->{logfh}->print("Cannot parse bytes",
- (map { sprintf(' %02x', $_) } @bad_bytes),
- "\n");
- @bad_bytes = ();
- }
+ my $light = !($byte & 0x20);
+ my $backbutton = !($byte & 0x10);
+ my $throttle = $byte & 0x0f;
- $self->{logfh}->print("Callback\n");
- &{ $self->{callback} }(@bytes[1..7]);
- splice @bytes, 0, 10;
- }
- if (@bad_bytes) {
- $self->{logfh}->print("Cannot parse bytes",
- (map { sprintf(' %02x', $_) } @bad_bytes),
- "\n");
- @bad_bytes = ();
+ $track->car($car)->set_throttle($throttle);
+ $track->car($car)->set_light($light);
+ $track->car($car)->set_backbutton($backbutton);
}
- @{ $self->{bytes} } = @bytes;
+ return $msg;
}
1;
https://www.fi.muni.cz/~kas/git / slotcarman.git / blobdiff