On Wed, 06 Dec 2017 21:53:37 -0600
"Martin McCormick" <[email protected]> wrote:
> A perl program needs to send binary data to an external device
> such that 0xff looks like 11111111
>
> I have a line in the program as follows:
>
> my $txstart = pack("h*","fefe5a95");
>
> Are those 4 bytes usable as the binary data
>
> fe fe 5a 95?
>
> Is there a good way when running perl -d to view the
> contents of the string to make sure it is what it should be?
>
Yes, see the "x" command
( http://perl-begin.org/tutorials/perl-for-newbies/part2/#page--debugger--DIR ),
https://metacpan.org/pod/Data::Dumper , https://metacpan.org/pod/DDP , and some
debugger GUIs such as https://en.wikipedia.org/wiki/Data_Display_Debugger .
Regards,
Shlomi
> Thank you.
>
> Martin McCormick
>
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