Hex Help

158 100+

I have a question for you guys, I need to send a UDP packet with the hex values of 0 to 255 my code looks somthing like this.

Expand|Select|Wrap|Line Numbers

 
#!/usr/bin/perl

print "Content-type:text/html\n\n";
 
  use IO::Socket;

  #use strict;

  use warnings;
 
  for($i=0;$i<16;$i++){

    my $hexnum = sprintf "%x", $i;
 
$hexnum = 0 x ( 2 - length( $hexnum ) ) . $hexnum;
 
    my $level = chr(0x.($hexnum));

      print $level,"<br>";
 
$DmxData = $filler x ( 509 - length( $level ) ) . $level;
 
  my $OpOutput = $ID.$Opcode2.$prover2.$ArtDmxP.$DmxData.$filler.$filler.$filler;
 
  $poll->send($OpOutput);

  }

    print "DMX packets sent.\n<hr>";

May 15 '07 #1

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2181

kardon33

158

100+

what im having trouble with is when i get to 9 it supose to go to 0a 0b so on. Well when i send it, I get in my packet scanner as just blank blank. for 0a and so on.

May 15 '07 #2

kardon33

158

100+

I get this Error when i run my code,

[Tue May 15 17:00:46 2007] [error] [client 127.0.0.1] Argument "0a" isn't numeric in chr at C:/Program Files/Apache Group/Apache2/htdocs/Lightmon/artnet.pl line 109.\r, referer: http://localhost/lightmon/
[Tue May 15 17:00:46 2007] [error] [client 127.0.0.1] Argument "0b" isn't numeric in chr at C:/Program Files/Apache Group/Apache2/htdocs/Lightmon/artnet.pl line 109.\r, referer: http://localhost/lightmon/
[Tue May 15 17:00:46 2007] [error] [client 127.0.0.1] Argument "0c" isn't numeric in chr at C:/Program Files/Apache Group/Apache2/htdocs/Lightmon/artnet.pl line 109.\r, referer: http://localhost/lightmon/
[Tue May 15 17:00:46 2007] [error] [client 127.0.0.1] Argument "0d" isn't numeric in chr at C:/Program Files/Apache Group/Apache2/htdocs/Lightmon/artnet.pl line 109.\r, referer: http://localhost/lightmon/
[Tue May 15 17:00:46 2007] [error] [client 127.0.0.1] Argument "0e" isn't numeric in chr at C:/Program Files/Apache Group/Apache2/htdocs/Lightmon/artnet.pl line 109.\r, referer: http://localhost/lightmon/
[Tue May 15 17:00:46 2007] [error] [client 127.0.0.1] Argument "0f" isn't numeric in chr at C:/Program Files/Apache Group/Apache2/htdocs/Lightmon/artnet.pl line 109.\r, referer: http://localhost/lightmon/

May 15 '07 #3

kardon33

158

100+

Ive been looking at my packet scanner and trying to find out the problem and it seems to have a distinct pattern, It will send the first 10 packets fine how they should be like 00-09 than it for 7 packets send 00 and than start working where it left off and run for 10 more good packets, than send 7 more ones with 01 and every 10 packets increasing 00 01 02 so on.

May 15 '07 #4

kardon33

158

100+

Please could anyone help me it would be very appreciated.

May 16 '07 #5

KevinADC

4,059

Expert 2GB

I can't figure out what it is you want help with.

May 16 '07 #6

kardon33

158

100+

I need to send hex values from 0-255 through UDP

how would i convert the number to hex and then convert them so i could send it.

May 16 '07 #7

KevinADC

4,059

Expert 2GB

You already know how to convert the numbers to hex:

Expand|Select|Wrap|Line Numbers

 for my $i (0..255){

    my $hex = sprintf "%x", $i;

    print $hex\n";

}

if you have to do something else to send those value via UDP I don't know anything about that myself.

May 16 '07 #8

kardon33

158

100+

I got it thanks for the help though

May 16 '07 #9

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