[Pdx-pm] bit conversion brain-teaser

[Randal L. Schwartz]

>>>>> "Joshua" == Joshua Hoblitt <jhoblitt at ifa.hawaii.edu> writes:

Joshua> I have a 7-bit digital I/O module that outputs the state of it's channels via an ascii hex value.
Joshua> For example:

Joshua> normal state		: 7F
Joshua> channel 0 to V-		: 7E
Joshua> channel 6 to V-		: 3F
Joshua> .
Joshua> .

Joshua> What I need to get out of this is the state of each channel.
Joshua> I thought it would be pretty simple to do a hex -> per bit
Joshua> conversion

perl -le 'print unpack "B*", pack "H*", "3F";'

=>

00111111


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