Sure thing, here's a program that shows basically how I use the function. 
@ItemList = (); #this would be filled with some data already, and pass
+ed in as a reference.
$ItemListRef = \@ItemList;


$LCSStatWd1 = 524288; #this would normally come from the file
$LCSStatWd1Bits = unpack("B32",pack("N",$LCSStatWd1)); #creating the b
+it string

print "$LCSStatWd1Bits\n";


#Discretes
$Offset = 0;
$LidarPwrState = ReadBits($LCSStatWd1Bits,\$Offset,1,$ItemListRef);
$LidarPwrStateToggle = ReadBits($LCSStatWd1Bits,\$Offset,1,$ItemListRe
+f);
$LCSMode = ReadBits($LCSStatWd1Bits,\$Offset,6,$ItemListRef);
$LidarCondition = ReadBits($LCSStatWd1Bits,\$Offset,3,$ItemListRef);
$NewCentAvail = ReadBits($LCSStatWd1Bits,\$Offset,1,$ItemListRef);
$ObjOutOfScnWin = ReadBits($LCSStatWd1Bits,\$Offset,1,$ItemListRef);
$ReAcqFailed = ReadBits($LCSStatWd1Bits,\$Offset,1,$ItemListRef);
$LaserState = ReadBits($LCSStatWd1Bits,\$Offset,1,$ItemListRef);
$GrCommEnable = ReadBits($LCSStatWd1Bits,\$Offset,1,$ItemListRef);
$LidarMode = ReadBits($LCSStatWd1Bits,\$Offset,2,$ItemListRef);
$LCSSubMode = ReadBits($LCSStatWd1Bits,\$Offset,3,$ItemListRef);
$GNCpredit = ReadBits($LCSStatWd1Bits,\$Offset,1,$ItemListRef);
$FOVedgemAz = ReadBits($LCSStatWd1Bits,\$Offset,1,$ItemListRef);
$FOVedgepAz = ReadBits($LCSStatWd1Bits,\$Offset,1,$ItemListRef);
$FOVedgemEl = ReadBits($LCSStatWd1Bits,\$Offset,1,$ItemListRef);
$FOVedgepEl = ReadBits($LCSStatWd1Bits,\$Offset,1,$ItemListRef);
$Spare2 = ReadBits($LCSStatWd1Bits,\$Offset,6,$ItemListRef);


sub ReadBits
{
    my $BitStringIn = @_[0];
    my $OffsetRef    = @_[1];
    my $Length        = @_[2];
    my $ItemListRef    = @_[3];
    my $BitStringOut = 0;

    $BitStringOut = substr($BitStringIn,$$OffsetRef,$Length);
    $$OffsetRef += $Length;

    $NumZeros = 32-$Length;
    $Zeros = unpack("B$NumZeros",pack("N",0));
    $BitStringOut = $Zeros.$BitStringOut;
    $NumOut = unpack("N",pack("B32",$BitStringOut));
    @$ItemListRef = (@$ItemListRef,$NumOut, "\t");
    
    print "\n$NumOut";
    
    return($NumOut);
}

[download]
I did look at vec, however it didn't look like it would work for me since I sometimes read 3 or 6 bits. I'll try taking out the padding, I thought that each number would need to be the same length to do the conversion right.

In reply to Re^2: Reading individual bits by iKnowNothing
in thread Reading individual bits by iKnowNothing

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